Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 1.501
Filtrar
1.
Eur J Paediatr Dent ; 25: 1, 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38775099

RESUMO

AIM: Prosthetic rehabilitation of deciduous teeth in paediatric age using pre-formed crowns has been considered one of the best methods of dental restoration since their introduction. Their main advantages are related to durability, longevity and a low rate of recurrent cavities. Since stainless steel crowns do not coincide with aesthetic needs of parents and patients, preformed paedodontic crowns made of zirconia and nano-hybrid composite was introduced. The aim of the study is to evaluate the degree of wear on the enamel and on themselves of the different paedodontic crowns. MATERIALS: Nine bovine teeth and nine paedodontic crowns for deciduous molars were selected for the study, three of which in zirconia, three in nano-hybrid composite and three in stainless steel. Wear test was carried out on the Rtech™ Instruments tribometer applying a force of 50 N. After that, both the bovine teeth and the paedodontic crowns were observed using a stereo microscope (Zeiss Stemi C-500) and a scanning electron microscope (SEM, Cambridge Stereoscan 440). The areas of wear were calculated with a software [ImageJ, version 1x, Wayne Rasband, Maryland, USA]. CONCLUSION: Pre-formed paediatric crowns in zirconia, nano-hybrid composite and stainless steel are a valid aid for the restoration of deciduous teeth and do not compromise the physiological wear characteristic of the phases of the dental exchange. The stainless steel crown is preferable for the restorations in the posterior sectors as its behaviour is the most similar to that of a natural tooth. Zirconia and nano-hybrid composite crowns showed an inversely proportional behaviour between their wear volume and that of the opposing tooth.


Assuntos
Coroas , Aço Inoxidável , Dente Decíduo , Zircônio , Bovinos , Zircônio/química , Aço Inoxidável/química , Animais , Humanos , Resinas Compostas/química , Microscopia Eletrônica de Varredura , Desgaste de Restauração Dentária , Materiais Dentários/química , Esmalte Dentário , Desgaste dos Dentes , Criança
2.
PLoS One ; 19(4): e0302261, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38626124

RESUMO

This in-vitro study aimed to analyse the effect of brushing and different brushing parameters (kind of toothpaste, kind of toothbrush, brushing force) on erosive tooth wear of primary bovine enamel and dentin. Specimens were prepared from primary bovine enamel or dentin (each group n = 12) and cyclically eroded (6 × 60 s/d, citric acid, pH 2.4) and brushed with children's toothbrushes (2 × 15 s/d) over 5 days. The brushing parameters under investigation were: toothpaste (fluoridated, fluoride-free), toothbrush (manual; rotating-oscillating and sonic, each at two different activation modes) and brushing force (1 N, 2 N). Specimens that were only eroded and not brushed served as controls. Enamel and dentin wear was quantified using widefield confocal microscopy. Statistical analysis was performed using three- and one-way ANOVAs followed by Scheffe's (enamel) or Tamhane's (dentin) post-hoc tests (p < 0.05). Brushing with the fluoridated toothpaste was able to significantly reduce erosive wear in enamel (by 15 to 37%, 6 of 10 groups) and in dentin (by 58 to 72%, all groups), while brushing with the fluoride-free toothpaste was not different from the controls. Considering the kind of toothpaste and brushing force, slight differences between the toothbrushes were observed in enamel, but not in dentin. Within the same toothbrush and activation mode, almost no differences between 1 and 2 N brushing force were detected. In conclusion, erosive tooth wear on primary bovine dental hard tissue mainly depends on the kind of toothpaste, rather than on the kind of toothbrush and the brushing force.


Assuntos
Abrasão Dentária , Erosão Dentária , Desgaste dos Dentes , Criança , Bovinos , Animais , Humanos , Abrasão Dentária/etiologia , Cremes Dentais/farmacologia , Escovação Dentária , Dentina , Esmalte Dentário
3.
Arch Oral Biol ; 163: 105981, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38669743

RESUMO

OBJECTIVES: An ex-vivo study was aimed at (i) programming clinically validated robot three-year random toothbrushing, (ii) evaluating cervical macro- and microwear patterns on all tooth groups of different functional age, (iii) documenting and codificating wear related morphological features at the cemento-enamel junction in young teeth and on roots in older teeth. DESIGN: Following ethical approval random toothbrushing (44 strokes per tooth horizontally, rotating, vertically; 2x/d) with manual toothbrushes and low-abrasive dentifrice was performed in an artificial oral cavity with brushing-force 3.5 N on 14 extracted human teeth. Morphological features were examined by SEM at baseline and after simulated 3 years using the replication technique. 3D-SEM analyses were carried out with a four-quadrant back scattered electron detector. Wilcoxon-Mann-Whitney-test was used for statistical analyses. RESULTS: 3-year random toothbrushing with horizontal, rotating and vertical brushing movements revealed morphological features classified as four enamel patterns, one dentin pattern and three cervical patterns. Negative impacts were enamel, cementum and dentin loss. Positive impact on oral health was removing dental calculus and straightening cervical traumatic and iatrogenic damages. The volume loss varied from x̅=34.25nl to x̅=87.75nl. Wear extended apically from 100 to 1500 micrometres. CONCLUSION: Robot simulated toothbrushing in an artificial oral cavity, with subsequent SEM and 3D-SEM assessment, elucidated both negative and oral health-contributing micromorphology patterns of cervical wear after simulated 3-year random toothbrushing. Cervical macro- and microwear of cementum revealed, for the first time, what we describe as overhanging enamel peninsulas and enamel islands on roots in young teeth, but no enamel islands on roots from older teeth after root cementum loss. In contrast, many older teeth exhibited enamel peninsulas.


Assuntos
Microscopia Eletrônica de Varredura , Robótica , Colo do Dente , Desgaste dos Dentes , Escovação Dentária , Humanos , Desgaste dos Dentes/etiologia , Colo do Dente/patologia , Esmalte Dentário , Cemento Dentário/patologia , Dentina , Dentifrícios , Técnicas In Vitro
4.
J Dent ; 145: 104983, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38574847

RESUMO

OBJECTIVE: This study presents a scoping review to determine the association between tooth wear and bruxism. DATA: A protocol was developed a priori (Open Science Framework (DOI 10.17605/OSF.IO/CS7JX)). Established scoping review methods were used for screening, data extraction, and synthesis. Risk of bias was assessed using JBI tools. Direct associations between tooth wear and bruxism were assessed. SOURCES: Embase, SCOPUS, Web of Science, Cochrane, and PubMed were searched. STUDY SELECTION: Any clinical study containing tooth wear and bruxism assessment done on humans in any language was included. Animal, in-vitro studies and case reports were excluded. CONCLUSIONS: Thirty publications reporting on the association between tooth wear and bruxism were included. The majority of publications were cross-sectional studies (90%) while only three were longitudinal (10%). Eleven papers assessed definitive bruxism for analysis (instrumental tools), one paper assessed probable bruxism (clinical inspection with self-report) and eighteen assessed possible bruxism (self-report). Of the eleven papers assessing definitive bruxism, eight also reported outcomes of non-instrumental tools. Tooth wear was mostly scored using indexes. Most studies reported no or weak associations between tooth wear and bruxism, except for the studies done on cervical tooth wear. When bruxism assessment was done through self-report, more often an association was found. Studies using multivariate analyses did not find an association between tooth wear and bruxism, except the cervical wear studies. Evidence shows inconclusive results as to whether bruxism and tooth wear are related or not. Therefore, well-designed longitudinal trials are needed to address this gap in the literature. CLINICAL SIGNIFICANCE: Based on the evidence, dental clinicians should not infer bruxism activity solely on the presence of tooth wear.


Assuntos
Bruxismo , Desgaste dos Dentes , Humanos , Bruxismo/complicações , Estudos Transversais
5.
J Dent ; 144: 104962, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38552999

RESUMO

OBJECTIVES: Erosive tooth wear is a multifactorial condition. The aim of this systematic review and meta-analysis was to identify key risk factors for erosive tooth wear in permanent dentition. STUDY SELECTION: Observational studies reporting anamnestic risk factors for erosive tooth wear. Methodological quality and risk of bias were assessed using the modified Newcastle-Ottawa scale for cross-sectional studies. Risk factors were visually presented in a heatmap, and where possible, random-effects meta-analyses were performed for the odds ratios (ORs) of risk factors. SOURCES: Electronic databases (MEDLINE, Embase, Scopus, and Web of Science) and manual searches in February 2023. The protocol was registered in PROSPERO (CRD4202339776). DATA: A total of 87 publications reporting on 71 studies were included in the systematic review. The studies examined a variety of anamnestic risk factors (n = 80) that were categorized into ten domains (socio-demographics, socio-economics, general health, oral diseases, medication, oral hygiene, food, beverages, dietary habits, and leisure-related risk factors). Meta-analyses revealed significant associations between erosive tooth wear and male gender (padj.<0.001; OR=1.30, 95 % CI: 1.16-1.44), regurgitation (padj.=0.033; OR=2.27, 95 % CI: 1.41-3.65), digestive disorders (padj.<0.001; OR=1.81, 95 % CI: 1.48-2.21), consumption of acidic foods (padj.=0.033; OR=2.40, 95 % CI: 1.44-4.00), seasoning sauces (padj.=0.003; OR=1.28, 95 % CI: 1.13-1.44), nutritional supplements (padj.=0.019; OR=1.73, 95 % CI: 1.28-2.35), and carbonated drinks (padj.=0.019; OR=1.43, 95 % CI: 1.17-1.75). Most included studies exhibited low bias risk. CONCLUSIONS: Observational studies investigated a variety of anamnestic risk factors for erosive tooth wear. Future studies should employ validated questionnaires, particularly considering the most important risk factors. CLINICAL SIGNIFICANCE: Erosive tooth wear is a prevalent condition. Clinicians should concentrate primarily on symptoms of gastroesophageal reflux disease and dietary factors when screening patients at risk for erosive tooth wear.


Assuntos
Erosão Dentária , Humanos , Fatores de Risco , Erosão Dentária/etiologia , Desgaste dos Dentes/etiologia , Comportamento Alimentar , Masculino , Feminino , Higiene Bucal , Fatores Sexuais , Estudos Transversais
6.
Dent Mater ; 40(5): 767-776, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38458918

RESUMO

OBJECTIVES: Aim of this prospective study was to assess full mouth rehabilitation of severe tooth wear patients using minimally invasive CAD/CAM resin-based composite (RBC) restorations and direct veneers by evaluating restoration survival up to 5.5-years. METHODS: Twenty-two patients with generalized severe tooth wear with functional and/or esthetic problems were included. Following minimally invasive preparation, CAD/CAM RBC restorations (LAVA Ultimate,3M) were adhesively luted, direct RBC veneers (Filtek Supreme XTE, 3M) were applied in the aesthetic region. Patients were recalled after 1m,1y,3y,5y and seen in between recalls by their general dentists or at the clinical study center if complaints occurred. Failures were categorized as F1 (severe deficiencies requiring replacement/extraction), F2 (localized deficiencies requiring re-cementation/repair) and F3 (small chippings requiring refurbishment/monitoring). Survival of indirect restorations was evaluated using lifetables and Kaplan-Meier-graphs, distinguishing between failure categories and tooth type (front teeth=FT, premolars=PM, molars=M). F1 + F2 and F1 + F2 + F3 failures were analyzed using Cox regression on the variables tooth type/ location, age, gender and VDO increase (p < 0.05). RESULTS: 568 indirect restorations and 200 direct veneers in 21 patients evaluated for up to 5.5-years. For indirect restorations, 96 failures were recorded (F1:6;F2:41;F3:49) and annual failure rates were 0.29%(FT), 1.56%(PM), 2.93%(M) for F1 +F2 and 0.53%(FT), 2.42%(PM), 6.11%(M) for F1 + F2 + F3. Reasons for failure were chipping fracture (48), adhesive fracture (32), complete debonding (7), caries (4), endodontic treatment (1) and reasons unknown (documentation general dentists, 4). Molar tooth type had a statistically significantly increased probability of failure compared with front teeth and premolars for F1 + F2 + F3 (p < 0.006). Direct veneer restorations showed 18 failures (F1:2;F2:9;F3:7). SIGNIFICANCE: Minimally invasive CAD/CAM RBC restorations combined with direct RBC veneers showed an acceptable clinical mid-term survival for restorative rehabilitation of severely worn dentitions.


Assuntos
Resinas Compostas , Desenho Assistido por Computador , Falha de Restauração Dentária , Restauração Dentária Permanente , Facetas Dentárias , Desgaste dos Dentes , Humanos , Feminino , Masculino , Estudos Prospectivos , Adulto , Pessoa de Meia-Idade , Restauração Dentária Permanente/métodos , Desgaste dos Dentes/terapia , Adulto Jovem
7.
Dent Mater ; 40(5): 789-799, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38461075

RESUMO

A critical examination of the literature for dental wear publications highlighted three distinct areas, clinical data, laboratory data and the simulation of the clinical situation data. The imprecision of the clinical data values from direct and indirect in vivo methods renders the clinical data compromised at best. Laboratory data showed a focus on finding a correlation between simplistic laboratory abrasive wear resistance studies and established materials science laboratory techniques, but with no actual correlation identified. Replication of the masticatory cycle in the mouth in the form of an oral wear simulator has focussed more on the wear testing devices rather than the wear quantification methods. As a result, the data acquisition variables in the x- and y-planes need to be examined to consider how they can influence the accuracy and precision of the laboratory wear measurements recorded in the dental literature. The current approach was undertaken using the teaching tool outlined in "The First Three Questions".


Assuntos
Teste de Materiais , Humanos , Desgaste de Restauração Dentária , Materiais Dentários/química , Desgaste dos Dentes , Propriedades de Superfície , Mastigação/fisiologia , Reprodutibilidade dos Testes
8.
Clin Oral Investig ; 28(2): 155, 2024 Feb 16.
Artigo em Inglês | MEDLINE | ID: mdl-38366215

RESUMO

OBJECTIVES: This study quantified the long-term occlusal wear in the natural posterior teeth and the associations per tooth type within the dentition. METHODS: The sample included 70 orthodontically treated subjects (52 females and 18 males; median age, 14.3 years), followed for a 12.7-year period. They were consecutively selected with no tooth wear-related criteria. Post-treatment (T1) and follow-up dental casts (T2) were scanned and superimposed through three-dimensional methods. Occlusal wear volume of posterior teeth and tooth wear patterns were investigated through non-parametric statistics and analysis of covariance. RESULTS: There were no significant differences between contralateral teeth. The average occlusal wear per posterior tooth was 2.3 mm3, with 65.2% of teeth showing values greater than 1 mm3. Males, mandibular teeth, and first molars exhibited slightly greater wear levels than females (median, 2.57 and 2.21 mm3, respectively; p = 0.005), maxillary teeth, and first or second premolars, respectively. In all first premolars and in the mandibular second premolars, the buccal cusps were primarily affected with no other distinct patterns. There were weak to moderate correlations between tooth types, apart from certain strong correlations detected in males. CONCLUSIONS: Posterior tooth wear was highly prevalent after a 13-year period starting at the onset of permanent dentition. The detected patterns are in accordance with the concept of canine guidance occlusion that is transforming into group synergy through function. CLINICAL RELEVANCE: The widespread tooth wear occurrence and the high intra- and inter-individual variability underline the need for individual patient monitoring to identify high-risk patients at early stages.


Assuntos
Atrito Dentário , Desgaste dos Dentes , Masculino , Feminino , Humanos , Adolescente , Dentição Permanente , Dente Molar , Dente Pré-Molar
10.
Am J Biol Anthropol ; 184(1): e24926, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38420653

RESUMO

OBJECTIVES: The analysis of dental wear provides a useful approach for dietary and cultural habit reconstructions of past human populations. The analysis of macrowear patterns can also be used to better understand the individual chewing behavior and to investigate the biomechanical responses during different biting scenarios. The aim of this study is to evaluate the diet and chewing performance of the adult Neanderthal Bourgeois-Delaunay 1 (BD 1) and to investigate the relationship between wear and cementum deposition under mechanical demands. MATERIALS AND METHODS: The macrowear pattern of BD 1 was analyzed using the occlusal fingerprint analysis method. We propose a new method for the bilateral measurement of the cementum volume along both buccal and lingual sides of the molar root. RESULTS: BD 1's anterior dentition is more affected by wear compared to the posterior one. The macrowear pattern suggest a normal chewing behavior and a mixed-diet coming from temperate environments. The teeth on the left side of the mandible display greater levels of wear, as well as the buccal side of the molar crowns. The cementum analysis shows higher buccal volume along the molar roots. DISCUSSION: BD1 could have been preferably chewing on the left side of the mandible. The exploitation of various food resources suggested by the macrowear analysis is compatible with the environmental reconstructions. Finally, the greater wear on the buccal side of the molar occlusal surface and the greater volume of cementum in that side of the molar roots offers a preliminary understanding about the potential correlation between dental wear and cementum deposition.


Assuntos
Homem de Neandertal , Desgaste dos Dentes , Dente , Adulto , Humanos , Animais , França , Hábitos
11.
J Dent ; 143: 104884, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38373521

RESUMO

OBJECTIVES: The aim for this pilot study was to investigate the effect of a sodium fluoride varnish on step height measured by a profilometer from human enamel worn by healthy volunteers with a novel in situ/ex vivo erosion design. METHOD: Healthy volunteers aged 18-70 years wore a palatal splint containing 8 human enamel samples and underwent two 3-day treatment periods for 6 h a day with a varnish containing sodium fluoride at 22,600 ppm and the control with the same ingredients but without fluoride. Each splint contained 4 polished and 4 unpolished samples. The interventions were applied to the surface of the enamel samples in randomised order, removed after 6 h, then immersed ex-vivo in 1 %, pH 2.7 citric acid for 2 min, repeated 4 times a day, over 2 days. Measurements of enamel were assessed blindly by microhardness on day 2 and by non-contact laser profilometry on day 3 for the two treatments. RESULTS: 24 volunteers, 2 males and 22 females aged 27-54 years, were screened and recruited. The delta microhardness, from polished samples removed at the end of day 2, for the control and fluoride treatment was 95.7 (22.9) kgf/mm2 and 123.7 (28.9) kgf/mm2, respectively (p < .005). The mean (SD) step height for the control polished enamel surfaces was 3.67 (2.07) µm and for the fluoride varnish was 1.79 (1.01) µm (p < .0005). The control unpolished enamel surfaces had a mean 2.09 (1.53) µm and the fluoride varnish was 2.11 (1.53) µm but no statistical difference was detected. CONCLUSIONS: The results from this pilot study, utilizing an in-situ model where enamel was exposed to acid over the course of 2 days, demonstrated that a high fluoride varnish containing sodium fluoride at 22,600 ppm prevented erosive wear compared to a control on the polished enamel surfaces. CLINICAL SIGNIFICANCE: Intra-oral study demonstrated that a high fluoride varnish containing sodium fluoride at 22,600 ppm reduced erosive tooth wear.


Assuntos
Erosão Dentária , Desgaste dos Dentes , Masculino , Feminino , Humanos , Fluoretos/uso terapêutico , Fluoreto de Sódio/farmacologia , Fluoreto de Sódio/uso terapêutico , Fluoretos Tópicos/farmacologia , Fluoretos Tópicos/uso terapêutico , Projetos Piloto , Erosão Dentária/prevenção & controle , Erosão Dentária/tratamento farmacológico
12.
J Dent ; 143: 104901, 2024 Apr.
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
13.
PLoS One ; 19(2): e0292358, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38306370

RESUMO

Tooth morphology is among the most well-studied indicators of ecology. For decades, researchers have examined the gross morphology and wear patterns of teeth as indicators of diet, and recent advances in scanning and computer analysis have allowed the development of new and more quantitative measures of tooth morphology. One of the most popular of these new methods is orientation patch count (OPC). OPC, a measure of surface complexity, was originally developed to distinguish the more complex tooth crowns of herbivores from the less complex tooth crowns of faunivores. OPC and a similar method derived from it, orientation patch count rotated (OPCR), have become commonplace in analyses of both modern and fossil amniote dietary ecology. The widespread use of these techniques makes it possible to now re-assess the utility of OPC and OPCR. Here, we undertake a comprehensive review of OPC(R) and diet and perform a meta-analysis to determine the overall difference in complexity between herbivores and faunivores. We find that the relationship between faunivore and herbivore OPC or OPCR values differs substantially across studies, and although some support the initial assessment of greater complexity in herbivores, others do not. Our meta-analysis does not support an overall pattern of greater complexity in herbivores than faunivores across terrestrial amniotes. It appears that the relationship of OPC or OPCR to diet is taxon-specific and dependent on the type of faunivory of the group in question, with insectivores often having values similar to herbivores. We suggest extreme caution in comparing OPC and OPCR values across studies and offer suggestions for how OPCR can constructively be used in future research.


Assuntos
Desgaste dos Dentes , Dente , Humanos , Dente/anatomia & histologia , Dieta , Coroa do Dente , Ecologia
15.
BMC Oral Health ; 24(1): 53, 2024 01 09.
Artigo em Inglês | MEDLINE | ID: mdl-38195512

RESUMO

BACKGROUND: Non-institutionalised older adults is the majority of older adults in Hong Kong. The study aimed to examine erosive tooth wear (ETW) and its association with dental conditions and oral hygiene habits among non-institutionalised older adults in Hong Kong. METHODS: This cross-sectional study recruited dentate adults aged 60 or above from nine elderly daycare centres in the five main districts of Hong Kong. The study consists of a questionnaire survey and a clinical examination. A researcher used a questionnaire to collected the participants' demographic information, oral hygiene habits such as toothbrushing habits and dental visit behaviour. A calibrated examiner performed an oral examination in the daycare elderly centre to assess the ETW using basic erosive wear (BEWE) criteria. Oral hygiene was recorded using visible plaque index. Prosthetic status was recorded using the World Health Organization criteria. Logistic regression was used to examine the correlation between ETW and the dental conditions and oral hygiene habits. RESULTS: This study recruited 433 dentate adults and 333 adults were female (77%). Their age ranged from 60 to 99 years and their mean age was 74 years (SD = 7). They all had ETW (BEWE > 0). Over half of them (57%) had BEWE score of 3, indicating severe ETW. Analysis showed increasing age (OR = 1.030, p = 0.029) and older adults with untreated dental caries had higher odds (OR = 1.822, p = 0.002) of presenting severe ETW. No other associations were found between the ETW and the factors studied. CONCLUSION: Hong Kong non-institutionalised older adults aged 60 or above had ETW and more than half of them had severe ETW. Increasing age and having untreated dental caries were associated with severe ETW.


Assuntos
Cárie Dentária , Desgaste dos Dentes , Idoso , Humanos , Feminino , Pessoa de Meia-Idade , Idoso de 80 Anos ou mais , Masculino , Estudos Transversais , Cárie Dentária/epidemiologia , Hong Kong/epidemiologia , Higiene Bucal
16.
Sci Rep ; 14(1): 592, 2024 01 05.
Artigo em Inglês | MEDLINE | ID: mdl-38182632

RESUMO

The aim of this study was to compare the assessment of tooth wear performed on digital models with the one conducted at the clinical examination. Seventy-eight volunteers (29 males and 49 females, age range 20-30 years) with at least 24 teeth, normal oral function, and a neutral transverse relationship were examined. During the clinical examination, dental wear was registered according to the Basic Erosive Wear Examination (BEWE) index. Subsequently, the BEWE index was blindly applied by two examiners on digital models obtained from the volunteers. Data were analyzed using weighted Cohen's kappa coefficient and correlation tests with a confidence interval of 95%. All volunteers showed signs of tooth wear. Anterior teeth showed increased severity of tooth wear than first molars. Early loss of tooth substance could be identified on the digital models, including in areas with challenging direct intraoral visual access. Approximately 50% of the scores based on clinical examination agreed with those based on examination of digital models (k = 0.543, p < 0.01). A moderate, positive correlation was observed between scores registered clinically and on digital models (Spearman's rho = 0.560, p < 0.001). Considering the rather low agreement between the clinical and digital scores, alternatives to using BEWE on digital models are needed.


Assuntos
Dente Molar , Desgaste dos Dentes , Feminino , Masculino , Humanos , Adulto Jovem , Adulto , Exame Físico , Voluntários , Desgaste dos Dentes/diagnóstico
17.
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
18.
J Med Internet Res ; 26: e49514, 2024 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-38167299

RESUMO

BACKGROUND: Due to the declining prevalence of dental caries, noncarious tooth defects such as erosive tooth wear have gained increased attention over the past decades. While patients more frequently search the internet for health-related information, the quality of patient-centered, web-based health information on erosive tooth wear is currently unknown. OBJECTIVE: This study aimed to assess the quality of patient-centered, web-based health information (websites and YouTube videos) on erosive tooth wear. METHODS: German-language websites were systematically identified through 3 electronic search engines (google.de, bing.de or yahoo.de, and duckduckgo.com) in September 2021. Eligible websites were independently assessed for (1) technical and functional aspects via the LIDA instrument, (2) readability via the Flesch reading-ease score, (3) comprehensiveness of information via a structured checklist, and (4) generic quality and risk of bias via the DISCERN instrument by 2 different reviewers. An overall quality score (ie, higher scores being favored) generated from all 4 domains was used as the primary outcome. Quality scores from each domain were separately analyzed as secondary outcomes and compared by the Friedman test. The effect of practice-specific variables on quality scores of websites from private dental offices was assessed using generalized linear modeling. Eligible YouTube videos were judged based on (1) the comprehensiveness of information, (2) viewers' interaction, and (3) viewing rate. The comprehensiveness of information was compared between websites and YouTube videos using the Wilcoxon rank-sum test. RESULTS: Overall, 231 eligible websites and 7 YouTube videos were identified and assessed. The median overall quality of the websites was 33.6% (IQR 29.8%-39.2%). Secondary outcome scores amounted to 64.3% (IQR 59.8%-69.0%) for technical and functional aspects, 40.0% (IQR 34.0%-49.0%) for readability, 11.5% (IQR 3.9%-26.9%) for comprehensiveness of information, and 16.7% (IQR 8.3%-23.3%) for generic quality. While the comprehensiveness of information and generic quality received low scores, technical and functional aspects as well as readability resulted in higher scores (both Padjusted<.001). Regarding practice-specific variables, websites from private dental offices outside Germany (P=.04; B=-6.64, 95% CI -12.85 to -0.42) or from dentists who are a dental society member (P=.049; B=-3.55, 95% CI -7.09 to -0.01) resulted in lower readability scores (ie, were more difficult to read), while a shorter time since dentists' examination resulted in higher readability scores (P=.01; B=0.24 per year, 95% CI 0.05-0.43). The comprehensiveness of information from YouTube videos was 34.6% (IQR 13.5%-38.5%). However, the comprehensiveness of information did not vary between websites and YouTube videos (P=.09). Additionally, viewers' interaction (1.7%, IQR 0.7%-3.4%) and viewing rates (101%, IQR 54.6%-112.6%) were low. CONCLUSIONS: The quality of German-language, patient-centered, web-based information on erosive tooth wear was limited. Especially, the comprehensiveness and trustworthiness of the available information were insufficient. Web-based information on erosive tooth wear requires improvement to inform patients comprehensively and reliably.


Assuntos
Cárie Dentária , Mídias Sociais , Telemedicina , Desgaste dos Dentes , Humanos , Compreensão , Assistência Centrada no Paciente , Internet
19.
J Oral Rehabil ; 51(5): 861-869, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38186266

RESUMO

BACKGROUND: Agreement exists about most of the clinical features of erosive tooth wear, though no evidence supports their validity in diagnosing the condition. OBJECTIVE: This study aimed to determine the accuracy of clinical signs for diagnosing erosive tooth wear in a young adult general population. METHODS: We conducted a cross-sectional study of dental students. In the first session, two examiners independently determined the presence of erosive tooth wear based on glazed enamel surfaces, morphological changes on non-occlusal surfaces, flattening of convex areas, or any type of concavity. In the second session, one examiner recorded the presence of clinical signs according to the Tooth Wear Evaluation System. The diagnostic accuracy of each clinical sign, both alone and combined, was assessed by calculating their sensitivity and specificity for detecting erosive tooth wear and performing multivariate logistic regression models. RESULTS: Of the 147 participants (78 women and 69 men; median age, 22 years) we included, 76.2% had erosive tooth wear. The single clinical signs with greatest balance between the sensitivity and specificity were 'convex areas flatten' (63% and 71%, respectively) and 'dull surface' (47% and 89%, respectively). Multivariate logistic regression revealed that 'preservation of the enamel cuff' (odds ratio, 22) and the combination of 'smooth silky shining, silky glazed appearance, and dull surface' (odds ratio, 68) had the best predictive values. CONCLUSIONS: The most accurate clinical signs for detecting early erosive tooth wear were dull surface, flattened convex areas and preservation of the enamel cuff.


Assuntos
Erosão Dentária , Desgaste dos Dentes , Masculino , Adulto Jovem , Humanos , Feminino , Adulto , Estudos Transversais , Prevalência , Desgaste dos Dentes/diagnóstico , Erosão Dentária/diagnóstico , Erosão Dentária/epidemiologia , Esmalte Dentário
20.
J Dent ; 142: 104832, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38211687

RESUMO

OBJECTIVES: The aim of this study was to evaluate the amount of enamel tooth wear induced by different antagonistic ceramic crown materials in the posterior area within a follow-up period up to 24 months in function. A network meta-analysis was performed to assess the effect of the materials on the mean vertical loss (MVL) of the antagonist enamel tooth surface. DATA: Main search terms used in combination: ceramic, dental materials, metal ceramic, tooth wear and dental enamel. SOURCES: An electronic search was conducted in PubMed/Medline, Embase, and Cochrane CENTRAL plus hand-searching. STUDY SELECTION: Eligibility criteria included clinical studies reporting on MVL on antagonist's tooth up to 24 months following the permanent crown placement. From a total of 5697 articles, 7 studies reporting on 261 crowns for 177 subjects with 3 ceramic materials (Lithium disilicate, metal-ceramic, monolithic zirconia) were included. Among all, metal-ceramic and zirconia caused significantly higher enamel tooth wear on antagonist teeth, representing 82.5 µm [54.4; 110.6]) and 40.1 µm [22.2; 58.0]) more MVL than natural teeth group. In contrast, lithium disilicate showed only 5.0 µm [-48.2; 58.1]) more MVL than occurs on opposing natural teeth. CONCLUSIONS: This systematic review demonstrated that prosthodontic ceramic materials produced significantly more antagonist enamel tooth wear than opposing natural enamel tooth wear, and ceramic material type was correlated to the degree of enamel tooth wear. Additional well-conducted, randomized controlled trials with homogeneous specimens are required due to inadequate sample size and number of the clinical studies included in the analyses. CLINICAL SIGNIFICANCE: The amount of wear caused by different restorative materials has a high influence on the antagonistic natural teeth and should therefore be evaluated intensively by the dentist.


Assuntos
Esmalte Dentário , Desgaste dos Dentes , Humanos , Cerâmica/efeitos adversos , Coroas , Porcelana Dentária/efeitos adversos , Desgaste de Restauração Dentária , Teste de Materiais , Metanálise em Rede , Propriedades de Superfície , Desgaste dos Dentes/etiologia , Zircônio/efeitos adversos , Ensaios Clínicos Controlados como Assunto
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...