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1.
BMJ Open ; 14(12): e090085, 2024 Dec 23.
Artigo em Inglês | MEDLINE | ID: mdl-39719276

RESUMO

INTRODUCTION: Childhood early oral ageing syndrome (CEOAS) is a condition involving oral abnormalities resulting from systemic diseases of different origins that are related to the current lifestyle of the paediatric population. Enamel defects associated with intrinsic and extrinsic factors promote the early loss of tooth structure at an accelerated pace, with negative impacts on function, aesthetics and quality of life. The aim of the study is to identify the prevalence of early tooth wear in childhood and its severity using the CEOAS index, which is a tool for the diagnosis of the condition and for epidemiological surveys, involving the investigation of abnormalities of the oral cavity in the paediatric population and possible factors associated with the severity of the condition. METHODS AND ANALYSIS: Children aged 3-6 years will be recruited from the paediatric clinic of Universidade Nove de Julho. Children with amelogenesis imperfecta, dentinogenesis imperfecta and genetic syndromes, as well as those undergoing orthodontic treatment will be excluded. A questionnaire will be administered addressing general health, sleep quality, dietary habits, oral hygiene habits and parafunctional habits. Clinical examinations will then be performed using the novel CEOAS index to assess tooth wear (scores 0-3) and determine the occurrence of enamel defects (scores I-III). The vertical dimension of occlusion (VDO) will also be measured. The CEOAS scores will be computed for the deciduous dentition and analysed statistically, with the significance level set at 5% (p<0.05). ETHICS AND DISSEMINATION: This protocol has been approved by the institutional review board of Universidade Nove de Julho (process number: 6.713.724. Approved on 20 March 2024). The results will be submitted to international peer-reviewed journals and presented at international conferences. TRIAL REGISTRATION NUMBER: www. CLINICALTRIALS: gov, NCT06381414. Registered 23 April 2024.


Assuntos
Desgaste dos Dentes , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Estudos Transversais , Prevalência , Qualidade de Vida , Projetos de Pesquisa , Inquéritos e Questionários , Desgaste dos Dentes/epidemiologia , Desgaste dos Dentes/etiologia , Estudos Observacionais como Assunto
2.
Acta Odontol Latinoam ; 37(2): 172-179, 2024 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-39484790

RESUMO

Bilingual schools have more hours and high levels of academic demands. Aims: To compare the degree of dental wear and frequency of severe wear facets between children from public rural schools (RG) and children from private bilingual schools in Buenos Aires City (PG). To compare the presence of facets to parents' reports on bruxism and their opinion on the importance to health of bruxism and snoring. Materials and Method: The sample (n=90) consisted of 5- and 10-year-old children. Their parents/guardians were asked to complete a structured questionnaire on bruxism and snoring. Children's degrees of dental wear on primary incisors, canines and molars were identified and recorded. The data were analyzed statistically. Results: The relative risk of wear between PG and RG was 1.82. Bruxism and snoring were reported by 22.9% of the parents/guardians of 5-year-olds and 8.8% of the parents/guardians of 10-year-olds. In 10-year-olds, significant differences were found between RG and PG for canine wear degree 3 (p=0.01). Conclusions: Children from highly demanding schools presented more dental wear. Higher frequency of severe dental wear was observed in primary canines and molars late in the tooth replacement period regardless of whether sleep bruxism was reported. Parents/guardians from different social conditions considered that bruxism and snoring are important to health to similar degrees.


Las escuelas bilingües tienen mayor carga horaria y altos niveles de exigencia académica. Objetivos: Comparar en niños preescolares y escolares de escuela pública rural (GR) y de colegios privados bilingües de la Ciudad Autónoma de Buenos Aires (GP) el grado de desgaste dentario y la frecuencia de facetas de desgaste severo. Comparar la presencia de facetas con el reporte de los padres sobre el bruxismo y su opinión sobre la importancia de bruxar y roncar. Materiales y Método: Muestra (n=90) conformada con niños de 5 y 10 años, cuyos responsables completaron un cuestionario estructurado. Fueron registrados y analizados estadísticamente los grados de desgaste dentario en incisivos, caninos y molares primarios. Resultados: El riesgo relativo de desgaste entre GP y GR fue 1,82. El 22,9% de los responsables de los niños de 5 años y el 8,8% de los de 10 años reportaron que bruxan y roncan. En relación a la muestra de 10 años, se hallaron diferencias significativas para caninos desgaste grado 3 entre GR y GP (p=0.01). Conclusiones: Los niños de escuelas con alta exigencia presentaron más desgaste. Se observó mayor frecuencia de desgaste dentario severo en caninos y molares primarios al final del recambio dentario independiente al reporte de bruxismo nocturno. Los cuidadores de diferente condición social revelaron valoración semejante sobre la importancia en la salud del bruxismo y el ronquido.


Assuntos
Desgaste dos Dentes , Dente Decíduo , Humanos , Criança , Feminino , Masculino , Pré-Escolar , Desgaste dos Dentes/epidemiologia , Meio Social , Argentina , Ronco/epidemiologia , Bruxismo/epidemiologia , Estudos Transversais , Setor Privado
3.
Sci Rep ; 14(1): 28741, 2024 11 20.
Artigo em Inglês | MEDLINE | ID: mdl-39567633

RESUMO

An animal model was applied to develop erosive tooth wear (ETW) and to evaluate the efficacy and safety of titanium tetrafluoride (TiF4) in preventing ETW. Forty-eight male Wistar rats were divided into three groups (n = 16): TiF4 (2.45% F-), NaF (2.45% F-) and placebo varnishes. Eight from each group were subjected to erosive challenges (Sprite Zero) and the other received tap water, both ad libitum. After twenty-eight days, the mandibles were resected for histopathological gingival analysis, clinical and microscopic tooth evaluation by 3D confocal laser microscopy, scanning electron microscopy (SEM-EDX) and micro-Raman spectroscopy (MRS). Organs were evaluated with respect to fluoride content. No significant difference was found in F content in tissues. No histopathological damage was seen in gingiva. ETW was clinically more aggressive in rats from placebo group consuming Sprite compared to water (Q²=12.6, p < 0.01), in accordance with confocal images. TiF4 was superior in reducing cross-section area loss (0.036 ± 0.01µm2) compared to NaF and placebo, respectively (0.044 ± 0.01/0.063 ± 0.01µm2, ANOVA, p < 0.0001). Dentin exposure was detected by SEM in rats belonging to placebo consuming Sprite. Peaks compatible with typical apatite bands were visible. TiF4 reduces the progression of ETW without causing any relevant side-effect and the rats' model was able to simulate ETW in vivo.


Assuntos
Modelos Animais de Doenças , Fluoretos , Ratos Wistar , Titânio , Animais , Masculino , Ratos , Erosão Dentária/prevenção & controle , Erosão Dentária/patologia , Desgaste dos Dentes/patologia , Fluoretos Tópicos/administração & dosagem , Fluoreto de Sódio , Microscopia Eletrônica de Varredura , Microscopia Confocal
4.
Dental Press J Orthod ; 29(5): e242476, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39383369

RESUMO

INTRODUCTION: CrossFit® is a physical training method that aims to promote physical fitness through the development of components such as aerobic capacity, strength and muscular endurance. Data regarding bruxism behaviors in CrossFit® practitioners are scarce, but previous studies have shown increased dental clenching behavior during weightlifting practices. OBJECTIVE: The present study aimed to evaluate clinical signs of bruxism in CrossFit® practitioners. METHODS: The sample comprised a convenience sample of CrossFit® practitioners (n=57), of both genders, aged 19-58 years. Outcome variables were as follows: Oral Behavior Checklist, the International Physical Activity Questionnaire and the Standardized Tool for the Assessment of Bruxism. Data were expressed in terms of absolute values and percentages. Spearman's correlation and Fisher exact tests were used for statistical analysis, and a significance level of 5% was considered. RESULTS: The mean age was 32.82 years, with a female majority (63.15%). CrossFit® practitioners frequently reported clenching their teeth during training practice (61.40%) and presented linea alba (82.45%), lip impression (54.38%), tongue impression (26.31%), bone exostosis (19.29%), tooth wear (61.40%) and non-carious cervical lesions (35.09%). CONCLUSIONS: No correlation was found between clinical signs of bruxism, oral behaviors and physical activity intensity; however, the results suggest that individuals who practice CrossFit® training have oral behaviors that can cause morpho-functional changes in the stomatognathic system, especially the habit of clenching their teeth during training. In addition, data emphasize the need for dental health education among CrossFit® practitioners, and more studies with a representative sample are necessary.


Assuntos
Bruxismo , Humanos , Feminino , Masculino , Adulto , Bruxismo/complicações , Pessoa de Meia-Idade , Levantamento de Peso , Adulto Jovem , Inquéritos e Questionários , Desgaste dos Dentes , Exostose , Aptidão Física
5.
J Oral Rehabil ; 51(12): 2537-2547, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-39225140

RESUMO

BACKGROUND: Bruxism is a behaviour that has several consequences in an individual's life, especially when it starts in childhood. However, bruxism can be a potential protective factor, which is an attribute that reduces the chance of a negative health outcome. OBJECTIVES: To evaluate the incidence of sleep bruxism (SB) and dental wear in children and adolescents. MATERIALS AND METHODS: This longitudinal study began in 2014 and 2016 (baseline) with initial 1816 children followed for 5 and 3 years, respectively. The follow-up data collection started in 2019. The diagnosis of SB was parents report (baseline) and self-report (follow-up) due to age groups of each phase, and questions related to symptoms of SB were collected. Five calibrated examiners (kappa >0.7) collected the clinical data. The clinical variables were dental erosion and dental wear. Contextual, individual, behaviour and clinical characteristics were collected. A multilevel logistic regression model was used to investigate the association of contextual, individual, behaviour and clinical characteristics with SB. Poisson regression for repeated measures was performed to evaluate the incidence of SB and dental wear (incidence rate ratio-IRR and confidence interval-95% CI). RESULTS: Two hundred and fifty-three children and adolescents answered questionnaires and were clinically examined. The mean age of the follow-up in 2019 was 11.25 years old (±2.19). There was no increase in the incidence of SB (95% CI: 0.74-1.35). Children/adolescents had a 2.2 higher risk to present dental wear (95% CI: 1.89-2.60). SB at the follow-up was associated with the contextual variable, earache, erosion and awake bruxism. CONCLUSIONS: In this population, children with SB remained with this behaviour and showed higher dental wear over the years.


Assuntos
Bruxismo do Sono , Humanos , Bruxismo do Sono/epidemiologia , Bruxismo do Sono/complicações , Criança , Feminino , Masculino , Estudos Longitudinais , Adolescente , Incidência , Inquéritos e Questionários , Desgaste dos Dentes/epidemiologia , Fatores de Risco , Autorrelato
6.
J Evid Based Dent Pract ; 24(3): 101990, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39174162

RESUMO

OBJECTIVE: The present systematic review with a network meta-analysis (NMA) aimed to evaluate the effect of high-power lasers, associated or not with fluoride compounds, to control and prevent Erosive Tooth Wear (ETW). METHODS: The review was registered in the PROSPERO (CRD42021242547) and followed the PICO question: P (population): enamel and dentin substrate; I (Intervention): high-power laser irradiation, associated or not with fluoride compounds; C (Control): no-treatment; and O (Outcomes): prevention/control of ETW. The electronic databases PubMed, Scopus, and EMBASE were searched. Two independent reviewers evaluated in vitro and in situ studies. The risk of bias was assessed using the RoBDEMAT tool. The estimated treatment effect derived from direct and indirect comparisons were analyzed and the difference between these effects was calculated based on the data of enamel and dentin surface loss (in µm). RESULTS: A total of 179 studies were retrieved and after the exclusion of duplicates, 103 studies had their titles and abstracts evaluated. Thirty-nine studies had their full text analyzed for data extraction (Cohen Kappa = 0.88). For sound enamel, the laser irradiation (L), fluoride application (F) and, the association of treatments (L + F) promoted higher protection than No-Treatment (NT). For eroded enamel, L + F and F did not differ, but both treatments reduced surface loss compared to NT and L. For sound and eroded dentin, treatments with laser increased surface loss. CONCLUSIONS: Although a high-power laser has some potential to prevent erosive tooth wear, this effect is not better than that of standard fluoride. The use of laser in the management of dentin erosive wear can be harmful.


Assuntos
Fluoretos , Erosão Dentária , Humanos , Erosão Dentária/prevenção & controle , Metanálise em Rede , Desgaste dos Dentes/prevenção & controle , Desgaste dos Dentes/etiologia , Esmalte Dentário/efeitos da radiação , Esmalte Dentário/efeitos dos fármacos , Dentina/efeitos dos fármacos , Dentina/efeitos da radiação , Terapia com Luz de Baixa Intensidade/métodos , Terapia a Laser
7.
Dent Med Probl ; 61(3): 417-426, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38888224

RESUMO

Severe tooth wear is related to substantial loss of tooth structure, with dentin exposure and significant loss (≥1/3) of the clinical crown. The objective of this systematic review was to summarize and analyze the scientific evidence regarding the mechanical performance of computer-aided design/computer-aided manufacturing (CAD/CAM) composite resin and CAD/CAM lithium disilicate ceramic occlusal veneers, in terms of fatigue and fracture resistance, on severely worn posterior teeth. Currently, occlusal veneers are an alternative for treating worn posterior teeth. Although scientific evidence demonstrates the good performance of lithium disilicate occlusal veneers, there are less brittle materials with a modulus of elasticity more similar to dentin than ceramics, such as resin CAD/CAM blocks. Therefore, it is important to identify which type of material is best for restoring teeth with occlusal wear defects and which material can provide better clinical performance. This review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A comprehensive search of the PubMed, Embase, Web of Science, Scopus, Cochrane, OpenGrey, Redalyc, DSpace, and Grey Literature Report databases was conducted and supplemented by a manual search, with no time or language limitations, until January 2022. We aimed to identify studies evaluating the fatigue and fracture resistance of CAD/CAM composite resin and ceramic occlusal veneers. The quality of the full-text articles was evaluated according to the modified Consolidated Standards of Reporting Trials (CONSORT) criteria for in vitro studies, and 400 articles were initially identified. After removing duplicates and applying the selection criteria, 6 studies were included in the review. The results demonstrated that the mechanical performance of CAD/CAM composite resin occlusal veneers is comparable to that of CAD/CAM lithium disilicate occlusal veneers in terms of fatigue and fracture resistance.


Assuntos
Cerâmica , Resinas Compostas , Desenho Assistido por Computador , Facetas Dentárias , Humanos , Porcelana Dentária , Falha de Restauração Dentária , Desgaste dos Dentes/etiologia , Desgaste dos Dentes/terapia
8.
Clin Oral Investig ; 28(6): 348, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38822934

RESUMO

OBJECTIVES: This study aims to map evidence on the relationship between hard drug use and dental wear. The scoping review is guided by the question: What is the relationship between hard drug consumption and dental wear? MATERIALS AND METHODS: Adhering to PRISMA-ScR guidelines, searches were conducted across PubMed, Embase, and four databases in March 2024. Inclusion criteria included studies investigating the association between hard drug use and dental wear, regardless of publication date or language. Data were presented through narrative exposition, tables, and a conceptual framework. RESULTS: Twenty-eight studies (four case-control, three cross-sectional, five case reports, and sixteen literature reviews) were included. Among case-control studies, 75% observed an association between drug use and dental erosion; however, no cross-sectional studies demonstrated this association. Despite questionable quality, reviews established connections between drug use and dental erosion. Studies aimed to elucidate potential causes for dental erosion. CONCLUSIONS: Analysis suggests a potential link between hard drug use and dental wear, though indirect. Factors like bruxism and reduced salivary pH may contribute to dental wear among drug users. Further investigation through primary studies exploring this relationship is necessary. CLINICAL RELEVANCE: Dentists should focus not only on clinical characteristics of dental wear but also on mediating factors such as bruxism and decreased salivary pH associated with drug use. This holistic approach allows for a deeper understanding of dental wear mechanisms, enabling targeted preventive and therapeutic interventions.


Assuntos
Desgaste dos Dentes , Humanos , Erosão Dentária/induzido quimicamente , Bruxismo , Concentração de Íons de Hidrogênio , Transtornos Relacionados ao Uso de Substâncias , Saliva/química
9.
Rev. ADM ; 81(3): 170-176, mayo-jun. 2024. ilus
Artigo em Espanhol | LILACS | ID: biblio-1567149

RESUMO

El avance de la tecnología permite realizar cambios en la rehabilitación y estética, reduce los tiempos de trabajo y disminuye los riesgos que se presentan al momento de utilizar materiales convencionales para la toma de impresiones. Existen dos técnicas que se pueden emplear, la analógica y la digital; la primera presenta mayores riesgos que el operador no puede controlar, así como tiempos más prolongados. Este reporte describe la rehabilitación bucal en dos pacientes con desgaste dental, se optó por usar ambas técnicas, la analógica y la digital, como tratamiento; en la primera se empleó el encerado convencional y en la segunda el software Exocad para el encerado digital. Finalmente en ambos casos se aplicó (AU)


The advance of technology has allowed changes in rehabilitation and esthetics, providing shorter working times and reducing the risks that occur when using conventional materials for taking impressions. There are two techniques that can be used, analog and digital, the first one presents greater risks that the operator cannot control, as well as more time. This report describes the oral rehabilitation in patients with dental wear. The treatment was carried out using the analogical and digital techniques, the former using conventional waxing and the latter using Exocad software for the digital waxing; finally, in both cases the injection technique with high-load Flow resin was used (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Estética Dentária , Desgaste dos Dentes/reabilitação , Planejamento de Assistência ao Paciente , Processamento de Imagem Assistida por Computador , Injeções
10.
Rev. ADM ; 81(3): 186-190, mayo-jun. 2024. ilus
Artigo em Espanhol | LILACS | ID: biblio-1567396

RESUMO

La estética ha llegado a formar una parte muy importante en la odontología actual. Sin embargo, no debemos sobreponer las necesidades estéticas sobre las necesidades funcionales. La pérdida de estructura dental asociada a bruxismo puede ser considerada patológica cuando compromete la guía anterior, la cual es la influencia en los movimientos mandibulares que proveen las superficies contactantes de los dientes maxilares anteriores con los mandibulares anteriores y evita contactos excéntricos dañinos en los dientes posteriores. El objetivo de este reporte de caso es presentar una alternativa conservadora para restablecer tanto la estética como la funcionalidad de una paciente de 34 años de edad que acudió a la Clínica de Prostodoncia de la Universidad Autónoma de Guadalajara en busca de rehabilitación estética de dientes anteriores. Una vez realizada su evaluación inicial se llegó al diagnóstico de pérdida de guía anterior por desgaste patológico asociado a bruxismo. El tratamiento incluyó tratamientos de conductos, remoción de caries y restauraciones mal ajustadas, coronas y carillas para restablecer la guía anterior. Se cumplieron con las expectativas estéticas que tenía la paciente al igual que con las necesidades funcionales que fueron objetivo desde el inicio, logrando un restablecimiento de la guía anterior de manera conservadora (AU)


Esthetics has become a very important part of dentistry today. However, we should not superimpose esthetic needs over functional needs. The loss of tooth structure associated with bruxism can be considered pathologic when it compromises the anterior guidance, which is the influence on mandibular movements that provides the contacting surfaces of the maxillary anterior teeth with the mandibular anterior teeth and avoids damaging eccentric contacts in the posterior teeth. The aim of this case report is to present a conservative way to restore both esthetics and function in a 34-year-old patient who came to the Prosthodontics Clinic of the Universidad Autónoma de Guadalajara in search of an esthetic appearance of her anterior teeth. After her initial evaluation, a diagnosis of anterior guide loss due to pathological wear associated with bruxism was made. Treatment included root canal treatment, removal of caries, and ill-fitting restorations, crowns, and veneers to reestablish the anterior guidance. The aesthetic expectations of the patient have met as well as the functional needs that were aimed from the beginning, achieving a conservative reestablishment of the anterior guidance system (AU)


Assuntos
Humanos , Feminino , Adulto , Bruxismo/fisiopatologia , Adesivos Dentinários/uso terapêutico , Estética Dentária , Desgaste dos Dentes/reabilitação , Planejamento de Assistência ao Paciente , Placas Oclusais , Preparo do Dente/métodos , Coroas , México
11.
BMC Oral Health ; 24(1): 607, 2024 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-38789946

RESUMO

BACKGROUND: This study aimed to evaluate dentin wear and biological performance of desensitizing materials. METHODS: Seventy bovine root dentin blocks were sectioned. Half of the surface of each specimen was untreated (control) and the other half was immersed in EDTA and treated with the following desensitizing materials: placebo varnish (PLA), fluoride varnish (FLU), sodium fluoride (NaF) varnish + sodium trimetaphosphate (TMP), universal adhesive (SBU), S-PRG varnish (SPRG), biosilicate (BIOS), and amelotin solution (AMTN). After application, the specimens were submitted to an erosive-abrasive challenge and the wear analyzed by optical profilometer. Serial dilutions of extracts obtained from the culture medium containing discs impregnated with those desensitizers were applied on fibroblasts and odontoblasts-like cells cultures. Cytotoxicity and production of total protein (TP) by colorimetric assays were determined after 24 h. Data were statistically analyzed using Kruskal-Wallis, Dunn's, One-way ANOVA and Tukey tests (p ≤ 0.05). RESULTS: No dentin wear was observed only for SBU. The lowest dentin wear was observed for AMTN and TMP. Cell viability was significantly reduced after treatment with undiluted extracts of PLA, FLU, TMP and SBU in fibroblasts and TMP and SBU in odontoblast-like cells. SPRG, BIOS and AMTN were cytocompatible at all dilutions tested. Considering TP results, no statistical difference was observed among the groups and high levels for TP were observed after TMP and FLU treatments. CONCLUSIONS: Universal adhesive system may protect dentin with opened tubules from wear after challenge. Extracts of adhesive and fluoride varnishes presented cytotoxic mainly on fibroblasts. The enamel protein may be a future alternative to treat dentin with opened tubules because it may cause low wear under erosive-abrasive challenge with low cytotoxic effects.


Assuntos
Dessensibilizantes Dentinários , Dentina , Fluoreto de Sódio , Animais , Bovinos , Dessensibilizantes Dentinários/farmacologia , Fluoreto de Sódio/farmacologia , Dentina/efeitos dos fármacos , Fluoretos Tópicos/farmacologia , Fibroblastos/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Desgaste dos Dentes , Teste de Materiais , Polifosfatos/farmacologia
12.
Eur J Prosthodont Restor Dent ; 32(3): 244-253, 2024 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-38591546

RESUMO

PURPOSE: The composition and properties of resin-based composite materials could affect tooth wear and lead to clinical problems. Therefore, the study objective was to characterize human tooth wear behavior against a bulk-fill restorative (BF) compared to a conventional resin composite (RC) and a CAD/CAM resin nano ceramic (RN). METHODS: Square-shaped specimens of each material were prepared and sub-divided according to the number of testing cycles (n=8): 100,000, 250,000, and 500,000 cycles. An occlusal wear test was performed using a chewing machine with 49 N, 2 Hz, in 37°C distilled water. Human premolar cusps were used as antagonists. Micro-CT and laser scanner were used to scan antagonists and specimens, respectively. Wear volume was assessed using a software and the wear pattern was examined with SEM. Softening in solvent analysis was performed by measuring the materials' Knoop microhardness (KHN) before and after immersion in ethanol. Wear volume data were analyzed with two-way ANOVA and Student-Neuman-Keuls test (α=0.05). RESULTS: For tooth and specimen wear volume, there was statistical significance for material and number of cycles, but not for the interaction between factors. BF resulted in less tooth (p=0.008) and specimen (p=0.030) wear than RN and RC, which were similar (p⟩0.05). Volume loss increased from 100,000 to 500,000 cycles. BF showed the lowest microhardness (KHN1); and %ΔKHN similar to RC, but greater than RN. CONCLUSION: BF induced less volume loss to the tooth than RC and RN, while presenting greater wear resistance. The tooth wear pattern and damage progression were mild for all materials. CLINICAL SIGNIFICANCE: Resin composites show favorable wear behavior, leading to low volume loss and mild structural damage of the tooth. Regular bulk-fill resin composite stands out for its efficient restorative technique, low wear susceptibility and reduced capacity to wear down the tooth.


Assuntos
Resinas Compostas , Teste de Materiais , Desgaste dos Dentes , Resinas Compostas/química , Humanos , Restauração Dentária Permanente/métodos , Propriedades de Superfície , Desenho Assistido por Computador , Técnicas In Vitro , Desgaste de Restauração Dentária , Dureza , Materiais Dentários/química
13.
Caries Res ; 58(4): 454-468, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38621371

RESUMO

BACKGROUND: Tooth brushing is a universal recommendation. However, the recommendations related to the time of its execution are conflicting, especially when dealing with patients at risk of erosive tooth wear (ETW) or dental caries. SUMMARY: Our objective was to summarize the evidence on the timing of brushing with fluoridated toothpaste in relation to ETW and cariogenic dietary challenges. We conducted a scoping review following the PRISMA-ScR checklist, using three databases searching for in vivo, in situ, or in vitro studies involving human teeth exposed to either a cariogenic or an erosive challenge. Only models including human saliva and fluoride were assessed. Data selection, extraction, and risk of bias analysis were done in duplicate and independently. From 1,545 identified studies, 17 (16 related to ETW and 1 to dental caries) were included. Most evidence (n = 10) supported that brushing with a fluoride-containing product does not increase ETW, independent of the moment of brushing. Delaying tooth brushing up to 1 h (n = 4) or individualized recommendations based on the patient's problem (n = 2) were less frequent. Only one study reported that brushing pre- or post-meal does not affect Streptococcus mutans counts. Most data were in situ (n = 13), and the overall study quality was judged as sufficient/low risk of bias. KEY MESSAGES: Although the available evidence lacked robust clinical studies, tooth brushing using fluoridated products immediately after an erosive challenge does not increase the risk of ETW and can be recommended, which is in line with recommendations for dental caries prevention. Furthermore, we suggest updating the international guidelines to promote individualized recommendations based on risk factors to prevent either ETW or dental caries.


Assuntos
Cárie Dentária , Erosão Dentária , Escovação Dentária , Humanos , Cárie Dentária/prevenção & controle , Cárie Dentária/etiologia , Erosão Dentária/prevenção & controle , Erosão Dentária/etiologia , Fluoretos/uso terapêutico , Cremes Dentais/uso terapêutico , Fatores de Tempo , Desgaste dos Dentes/etiologia , Desgaste dos Dentes/prevenção & controle , Cariostáticos/uso terapêutico , Saliva/microbiologia
14.
J Dent ; 143: 104901, 2024 04.
Artigo em Inglês | MEDLINE | ID: mdl-38417610

RESUMO

OBJECTIVES: To assess the effect of different tin-containing toothpastes on the control of erosive tooth wear in enamel and dentin. METHODS: Enamel and dentin slabs were randomly distributed into 7 experimental groups (n = 10/substrate): C-: negative control (Artificial saliva); AmF (regular fluoridated toothpaste without tin); Sn-1 (SnF2/NaF); Sn-2 (SnF2/NaF/SnCl2); Sn-3 (SnCl2/NaF); Sn-4 (SnF2/SnCl2); Sn-5 (SnCl2/AmF/NaF/chitosan). Specimens were submitted to 5-day erosion-abrasion cycling. Surface loss (SL) was determined with an optical profilometer. Tin deposition on the tooth surfaces and some characteristics of the toothpastes (pH, potentially available F-, %weight of solid particles, and RDA) were also assessed. Data were statistically analyzed (α = 0.05). RESULTS: For enamel, the Sn-2 presented the lowest SL, not differing significantly from AmF, C+, and Sn-3. The SL of these groups was significantly lower than the C-, except for Sn-3. Sn-1 and Sn-4 were also not significantly different from C-. For dentin, C- significantly showed the highest SL values, whilst, Sn-1 presented the lowest SL, not differing significantly from AmF, Sn-2, C+, and Sn-3. There was a significant positive association between enamel SL and the pH and tin deposition. Dentin SL was significantly negatively associated with the %weight of solid particles and RDA. CONCLUSIONS: Most of the tin-toothpastes were able to exhibit some protection against ETW. In this process, the toothpastes characteristics play a role, as lower enamel SL was significantly associated with lower pH values and tin deposition; and lower dentin SL was associated with higher %weight of solid particles and RDA of the toothpastes. CLINICAL SIGNIFICANCE: Tin-containing toothpastes can be used for erosive tooth wear protection, but our study showed that their effect depends on the pH, amount of tin deposition, % weight of solid particles and RDA of the toohpastes.


Assuntos
Compostos de Estanho , Abrasão Dentária , Erosão Dentária , Desgaste dos Dentes , Humanos , Fluoretos de Estanho/farmacologia , Cremes Dentais/farmacologia , Fluoretos/farmacologia , Erosão Dentária/prevenção & controle , Estanho , Abrasão Dentária/prevenção & controle , Fluoreto de Sódio/farmacologia , Escovação Dentária
15.
São Paulo; s.n; 20240111. 98 p.
Tese em Português | LILACS, BBO - Odontologia | ID: biblio-1526203

RESUMO

Objetivo: determinar a rugosidade superficial de coroas de quatro materiais processados por tecnologia CAD-CAM antes e após ensaio de desgaste realizado em um simulador da mastigação. E, ainda, mensurar a perda de volume e a perda de peso desses materiais após o ensaio de desgaste. Materiais e métodos: sessenta e quatro coroas foram confeccionadas e distribuídas em grupos. Grupos de coroas simulando o dente 16: B (IPS e.max CAD), C (Suprinity), D (Enamic) e E (Lava Ultimate); grupos de coroas antagonistas simulando o dente 46: AB, AC, AD e AE (todas compostas do material IPS e.max CAD). As coroas foram levadas à uma simuladora da mastigação para a realização do ensaio de desgaste. Antes do ensaio, as coroas foram submetidas à pesagem e à análise em um perfilômetro para determinação da rugosidade superficial e, também, para obtenção de imagens da topografia para determinação do volume. Após o ensaio de desgaste, as mesmas análises foram repetidas e os dados coletados e analisados. Resultados: os valores de rugosidade encontrados antes e após o ensaio de desgaste para os grupos de coroas testadas foram E > D = C = B, e para os grupos de coroas antagonistas foram AB = AC = AD = AE. Não houve diferença estatística dos valores de Ra antes e após o ensaio de desgaste de nenhum grupo quando comparados entre si. Os valores de perda de volume encontrados foram: grupo B = 29,18 mm3, grupo C = 21,59 mm3, grupo D = 20,73 mm3, grupo E = 14,17 mm3, grupo AB = 23,28 mm3, grupo AC = 26,07 mm3, grupo AD = 26,57 mm3 e grupo AE = 14,30 mm3. Os valores de perda de peso encontrados foram: grupo B = 0,026 g, grupo C = 0,017 g, grupo D = 0,007 g, grupo E = 0,007 g, grupo AB = 0,012 g, grupo AC = 0,011 g, grupo AD = 0,045 g e grupo AE = 0,003 g. Conclusões: as coroas IPS e.max CAD, Suprinity e Enamic apresentaram melhor desempenho no parâmetro rugosidade superficial, mantendo os valores de rugosidade pelo período de um ano de simulação da mastigação. As coroas de IPS e.max CAD apresentaram ótimo desempenho como coroa antagonista dos materiais vitrocerâmicos, híbrido e resinoso, no quesito rugosidade superficial, não alterando os valores de rugosidade apresentados após um ano de simulação da mastigação. As coroas Lava Ultimate apresentaram o melhor desempenho no quesito desgaste, com os menores valores de perda de volume e de peso. Apresentaram também a menor taxa de desgaste do antagonista. Não foi encontrada relação entre o comportamento de desgaste e o parâmetro rugosidade superficial. IPS e.max CAD, Suprinity e Enamic exibiram um potencial de desgaste maior, mas apresentaram menor rugosidade do que o Lava Ultimate.


Assuntos
Desgaste dos Dentes
16.
Vet Rec ; 194(1): e3409, 2024 01 06.
Artigo em Inglês | MEDLINE | ID: mdl-37707436

RESUMO

BACKGROUND: Periodontitis and tooth wear are multifactorial diseases with distinct etiopathogenesis that affect the health, feed efficiency and welfare of sheep. METHODS: This study evaluated the co-occurrence of tooth wear and periodontal lesions in 129 ewes from two Brazilian flocks, clinically classified the lesions and presence of dental calculus, and identified potential pathogens in the dental biofilm of 63 ewes by polymerase chain reaction. RESULTS: Of the 129 ewes included in the study, 75 presented periodontal lesions, while all animals presented tooth wear and dental calculus. Of the animals with periodontal lesions, 16.2% had lesions in incisor teeth and 52.7% in masticatory teeth. Regarding excessive tooth wear, 38.6% had severe wear on the incisor teeth and 89.1% on the masticatory teeth. Ewes older than 36 months had a higher frequency of periodontal lesions in incisor teeth (p < 0.001) and a greater amount of dental calculus (p < 0.001), but there was no association between tooth wear and animal age. Fusobacterium nucleatum, Tannerella forsythia and Fusobacterium necrophorum predominated in periodontal lesions. LIMITATION: This study is limited by the small sample size and lack of diagnostic imaging to assess periodontal disease. CONCLUSION: The co-occurrence of periodontal lesions and excessive dental wear involving both the incisor and masticatory teeth suggests that although the two diseases have different aetiologies, they likely have common risk factors.


Assuntos
Doenças Periodontais , Doenças dos Ovinos , Desgaste dos Dentes , Animais , Feminino , Ovinos , Incisivo/patologia , Brasil/epidemiologia , Cálculos Dentários/epidemiologia , Cálculos Dentários/veterinária , Doenças Periodontais/patologia , Doenças Periodontais/veterinária , Desgaste dos Dentes/epidemiologia , Desgaste dos Dentes/veterinária , Doenças dos Ovinos/epidemiologia
17.
Dent Mater ; 40(1): 118-123, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37940499

RESUMO

OBJECTIVES: This study aims to identify the two-dimensional and three-dimensional analyses and evaluate the loss of tooth structure in the tooth's different constituent elements and the ceramic antagonist's surface. METHODS: In this study, three groups (n = 10) represented by different ceramic systems (lithium disilicate [GDis], lithium silicate reinforced with zirconia [GSil], and monolithic zirconia [GZir]) were evaluated. Each group obtained ten ceramic blocks and submitted them to the sintering/crystallization process. To carry out the wear test, healthy mandibular premolars were used as the specimens and the ceramic blocks as antagonists. The premolars were submitted to two-dimensional and three-dimensional analyses using a computerized microtomography (µTC) before and after the wear test. The wear test was performed with 30 N and 300,000 cycles load, with occlusion, laterality, and disocclusion movements. RESULTS: The statistical analysis comparing the loss of two-dimensional tooth structure showed a statistically significant difference among all groups (p < 0.05). Statistical analysis comparing the percentage of loss of three-dimensional tooth structure showed a statistically significant difference between groups GDis and GSil and between groups GDis and GZir. However, when comparing GSil with GZir, no statistically significant difference was found. The qualitative analysis of the teeth showed that GDis showed considerable enamel loss and dentin exposure, GSil showed enamel wear with flattening the cusp without dentin exposure, and GZir showed minimal enamel wear without dentin exposure. In the qualitative analysis of ceramic antagonists, more significant wear of the ceramic material for GDis was observed, followed by the GSil and GZir groups, respectively. SIGNIFICANCE: The use of the lithium disilicate should be cautious, restricting it to areas with lower masticatory forces. Areas of higher masticatory forces showed a large amount of antagonist wear, with dentin involvement. This can lead to dentinal hypersensitivity, risk of compromising patients' occlusion, by harming group disocclusion guides, causing pain and temporomandibular disorders.


Assuntos
Desgaste dos Dentes , Humanos , Teste de Materiais , Porcelana Dentária/química , Cerâmica/química , Zircônio/química , Inibidores de Dissociação do Nucleotídeo Guanina , Propriedades de Superfície
18.
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1558650

RESUMO

Abstract Objective: To identify the prevalence, severity, hypersensitivity, and distribution of Non-carious cervical lesions (NCCL) among university students in Brazil. Material and Methods: 179 participants answered an anamnesis with twenty questions about the presence or absence of habits associated with NCCL. The participants' teeth were evaluated to identify the presence or absence of the lesion, its classification, involved surfaces, severity, hypersensitivity, and tooth wear index. A hypersensitivity test was performed with ice water. Data were analyzed using the chi-square test and simple logistic regression (p<0.01). Results: 179 participants answered an anamnesis with twenty questions about the presence or absence of habits associated with NCCL. The participants' teeth were evaluated to identify the presence or absence of the lesion, its classification, involved surfaces, severity, hypersensitivity, and tooth wear index. A hypersensitivity test was performed with ice water. Data were analyzed using the chi-square test and simple logistic regression (p<0.01). Conclusion: The prevalence of NCCL was 15.1% and abfraction was the most frequent lesion. Premolars were the teeth most affected by non-carious cervical lesions.


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Estudantes , Erosão Dentária/etiologia , Sensibilidade da Dentina/etiologia , Desgaste dos Dentes/etiologia , Brasil/epidemiologia , Distribuição de Qui-Quadrado , Estudos Transversais/métodos , Inquéritos e Questionários
19.
São José dos Campos; s.n; 2024. 143 p. ilus, tab.
Tese em Português | LILACS, BBO - Odontologia | ID: biblio-1570225

RESUMO

O estudo avaliou o efeito da adição de partículas bioativas ao gel clareador (peróxido de hidrogênio 35%, técnica de consultório), quanto ao clareamento e sobre a estrutura dental, além da resistência à desmineralização. O objetivo da primeira parte do estudo foi avaliar géis, com diferentes partículas bioativas e concentrações, para o potencial clareador e às alterações da estrutura dental. O objetivo da segunda parte foi avaliar géis, com diferentes partículas bioativas e concentrações, perante a suscetibilidade do esmalte ao protocolo cariogênico e ao desgaste dental erosivo. Espécimes de incisivos bovinos foram avaliados na primeira parte por análise da cor, microdureza Knoop e rugosidade. Os grupos foram controle negativo (CN), controle comercial (CCWhiteness HP), controle experimental (CE-gel sem partícula), controle positivo (CPsolução de peróxido), e os grupos experimentais onde as partículas bioativas S-PRG e 45S5 foram utilizadas nas concentrações de 5, 10, 15 e 20 %. Na segunda parte foram avaliados por microradiografia para a alteração da densidade mineral e profundidade da lesão perante o protocolo cariogênico e pela perfilometria para o desgaste dental erosivo. Os grupos foram CN, CC, CE, controle fluoreto (CF), e os grupos experimentais onde as partículas bioativas S-PRG e 45S5 foram utilizados nas concentrações de 15 e 20 % apenas. Os dados foram analisados estatisticamente para verificar a diferença entre os grupos (α=5%). Para a mudança de cor (∆E*00) foi observada diferença apenas para o fator partícula, S-PRG-3,37(0,48)a e 45S5-3,67(0,76)b. Todos os grupos experimentais foram estatisticamente iguais o CP e diferentes do CN. Para a microdureza (KNH%) foi observada diferença para a interação dos fatores, sendo o S-PRG 20% o grupo com maior aumento da microdureza. Todos os grupos experimentais foram diferentes e maiores que CP, CC e CE. Não foram observadas diferenças de rugosidade entre os grupos. Para a alteração da densidade mineral foi observada diferença para a interação dos fatores e tempo. Os grupos S-PRG 15% e 20% foram os grupos que apresentaram a menor alteração da densidade mineral em todos os tempos testados. Aos 14 e 21 dias o SPRG 20% foi diferente do CN e semelhante ao CF. Para a profundidade da lesão foram observadas diferenças estatísticas para o fator partícula e tempo, S-PRG206,8(59,2)a e 45S5 230,0(63,7)b, 7 dias-148,9(19,7)a, 14 dias-217,7(22,5)b e 21 dias288,7(30,7)c. Aos 14 e 21 dias o S-PRG 20% foi diferente do CN e semelhante ao CF. Para o desgaste foi observada diferença apenas para o tempo, 5 dias-1,2(0,2)a e 10 dias-2,3(0,3)b. Conclui-se que: a adição de partículas bioativas não reduziu a efetividade clareadora, contribuiu para o aumento da microdureza e não alterou a rugosidade. Além disso, o grupo S-PRG com 20% teve suscetibilidade à desmineralização por cárie semelhante ao grupo controle fluoreto e nenhum grupo alterou a suscetibilidade ao desgaste dental erosivo (AU)


The study evaluated the consequences of bioparticle addition on tooth bleaching gel (hydrogen peroxide 35%, in-office technique), for its bleaching effect and changes on tooth structure, also for resistance against demineralization. The aim of the first part of the study was to evaluate bleaching gels containing different bioactive particles and concentrations over the bleaching potential and possible dental structural changes. The objective of the second part was to evaluate bleaching gels containing different bioactive particles and concentrations to assess enamel susceptibility to cariogenic and erosive tooth wear protocols after bleaching treatments. Bovine incisors specimens were used in the first part for analysis of color, Knoop microhardness and roughness. The groups were negative control (NC), commercial control (CCWhiteness HP), experimental control (EC-gel without particles), positive control (PCperoxide solution), and experimental groups were the bioactive particles S-PRG and 45S5 used in concentrations of 5, 10, 15, and 20 %. In the second part, specimens were evaluated using advanced transverse microradiography to assess the change in mineral density and lesion depth in response to the cariogenic protocol, and profilometry to measure wear in response to the erosive tooth wear protocol. The groups were NC, CC, EC, fluoride control (FC), and experimental groups were the bioactive particles S-PRG and 45S5 used only in concentrations of 15 and 20 %. The data were statistically analyzed to verify the differences between the groups (α=5%). For the color change (∆E*00), a difference was observed only for particle, S-PRG3,37(0,48)a and 45S5-3,67(0,76)b. All experimental groups were statistically similar to PC and different from NC. For the microhardness (KNH%), difference was observed for factors interaction, S-PRG 20% was the group with higher hardness increase. All experimental groups were different and higher than PC, CC, and EC. No roughness differences were observed between groups. For the mineral density alteration differences were observed for factors interaction and time. S-PRG 15% and 20% presented the lower mineral density change for all measurements times. On 14 and 21 days S-PRG 20% was different from NC and similar to FC. For lesion depth differences were observed for factor particle and time, S-PRG-206,8(59,2)a and 45S5- 230,0(63,7)b, 7 days-148,9(19,7)a, 14 days-217,7(22,5)b and 21 days-288,7(30,7)c. On 14 and 21 days S-PRG 20% was different from NC and similar to FC. For wear the only difference was for time, 5 days-1,2(0,2)a and 10 days-2,3(0,3)b. It was concluded that the addition of bioactive particles did not reduce the bleaching effectiveness, it contributed to microhardness increase and did not change roughness. Furthermore, the S-PRG group with 20% susceptibility to cariogenic demineralization was similar to the fluoride control group, and no group showed a change in susceptibility to erosive tooth wear (AU)


Assuntos
Clareamento Dental , Desmineralização , Cor , Desgaste dos Dentes
20.
Rev. Nav. Odontol. On Line ; 51(1): [35-46], 2024.
Artigo em Português | LILACS, BBO - Odontologia | ID: biblio-1568266

RESUMO

A Biocorrosão é a desmineralização do dente causada pela exposição frequente a ácidos intrínsecos e/ou extrínsecos. O objetivo deste trabalho foi realizar uma revisão de literatura sobre prevalência, etiologia, diagnóstico, prevenção, tratamento e acompanhamento da biocorrosão. Realizou-se uma pesquisa avançada nas bases de dados PubMed, Biblioteca Virtual em Saúde (BVS) e Portal Periódicos CAPES com os descritores em ciências da saúde DeCS e MeSH. Foram incluídos artigos publicados em revistas científcas nos últimos 10 anos, em suas versões completas, em português, inglês e espanhol. Artigos duplicados, livros e teses foram excluídos.Ao final, 5.474 artigos foram encontrados e, após a leitura dos títulos e resumos, 40 artigos foram selecionados para a leitura completa.A biocorrosão dos tecidos dentários está cada vez mais comum na população em geral; atualmente, cerca de 29% dos adultos apresentam sinais da doença. Por isso, seu diagnóstico deve ser feito o mais precocemente possível, evitando danos graves à estrutura dentária. Para isso, os cirurgiões-dentistas devem estar atentos à exposição bucal a ácidos gástricos e a hábitos alimentares com consumo frequente de alimentos ou bebidas ácidas, os quais são os principais agentes etiológicos dessa condição, enquanto reconhecem os sinais clínicos associados. A prevenção é importante em todos os estágios, e o tratamento varia entre restaurações diretas, indiretas ou coroas totais. Além disso, a orientação do paciente e o acompanhamento dessa condição são fundamentais. Conclui-se que medidas preventivas são indispensáveis para evitar ou paralisar a progressão da doença e o tratamento deve priorizar abordagens minimamente invasivas, sendo crucial acompanhá-las para garantir um bom controle dessa condição.


Assuntos
Humanos , Erosão Dentária , Saúde Bucal , Corrosão Dentária , Desgaste dos Dentes
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