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1.
Prog Orthod ; 21(1): 32, 2020 Sep 14.
Artigo em Inglês | MEDLINE | ID: mdl-32924097

RESUMO

BACKGROUND: The loss of third-order information in pre-adjusted brackets due to torsional play is a problem in clinical orthodontics. The aim of this study was to evaluate the impact of slot height, archwire height, width and edge bevel's radius on the torsional play for three brackets/archwire systems. METHODS: Ninety brackets with a 0.022 × 0.028 in. slot with McLaughlin-Bennett-Trevisi prescription from three different manufacturers were selected, and the slot's height and depth were measured using a profile projector. Sixty stainless-steel rectangular archwires from three different manufacturers were sectioned and observed with a SEM to measure their height, width, and radius of edge bevel. The recorded data were used to calculate the theoretical torsional play between different slot-archwire combinations. One-way ANOVA was used to compare the measurements within different bracket types and among different manufacturers. RESULTS: Slot height was usually oversized. Archwire's height was usually undersized, but oversized wires were also observed. The radius edge bevel was the most variable parameter. A certain degree of torsional play is always present that differs from one bracket type to another of the same producer and that can even be doubled from one manufacturer to another. CONCLUSIONS: Due to production tolerance, differences between the nominal values and the real dimensions of any components of a slot/archwire system are common. This results in a torsional play that limits torque expression. The archwire's edge bevel plays an important role in torque expression, and clearer information should be provided by the manufacturers regarding this aspect.


Assuntos
Braquetes Ortodônticos , Fios Ortodônticos , Desenho de Aparelho Ortodôntico , Aço Inoxidável , Torque
2.
PLoS One ; 15(4): e0228798, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32330172

RESUMO

OBJECTIVE: This study aimed to investigate salivary levels of Streptococcus mutans (S. mutans) and Lactobacilli, and other salivary indices in subjects wearing clear aligners (CA) in comparison with multibrackets orthodontic appliances (MB). MATERIALS AND METHODS: A sample of 80 participants (46 males and 34 females) was included in the study: 40 subjects (aged 20.4±1.7 years) were treated with CA, and 40 (aged 21.3±1.7 years) were treated with MB. Plaque index (PI), salivary flow, buffering power of saliva, and salivary levels of S. mutans and Lactobacilli were evaluated prior to start of orthodontic treatment (t0), after 3 months (t1) and 6 months (t2). RESULTS: CA patients maintained PI at level 0 over time, while MB participants experienced a statistically significant increasing trend of PI over time. In addition, at t2, 37.5% of MB participants (15 subjects over 40) showed risky salivary levels (CFU/ml>105) of S. mutans (odds ratio = 7.40; 95% C.I. = 1.94-28.25; chi-square = 10.32; p = 0.001) as well as Lactobacilli (odds ratio = 23.40; 95% C.I. = 2.91-188.36; chi-square = 15.31; p = 0.0001). CONCLUSIONS: Comparing all the data, subjects treated with CA achieved lower salivary microbial colonization after 6 months of treatment compared with MB. Different additional strategies for plaque control and salivary microbial colonization must be triggered considering the type of orthodontic appliance.


Assuntos
Índice de Placa Dentária , Lactobacillus/fisiologia , Aparelhos Ortodônticos Fixos , Aparelhos Ortodônticos Removíveis , Saliva/microbiologia , Streptococcus mutans/fisiologia , Contagem de Colônia Microbiana , Feminino , Humanos , Lactobacillus/crescimento & desenvolvimento , Masculino , Streptococcus mutans/crescimento & desenvolvimento , Adulto Jovem
3.
Dent J (Basel) ; 8(2)2020 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-32290075

RESUMO

Aim: The treatment of patients with mixed dentition, with inferior moderate dental crowding (the so-called borderline cases, between extraction and expansion) is not yet clear. Two examples of widely used appliances for increasing lower dental arch dimensions are the Schwarz's appliance and lip bumper. The aim of this prospective study was to compare dental crowding and arch dimensions from pre- to post-treatment with lip bumper versus Schwarz's appliance. Subjects and Methods: Pre- and post-treatment orthodontic records of twenty subjects (10 males and 10 females) were analyzed in the present study. Inclusion criteria were: first/second molar class malocclusion; crowding of the mandibular arch, from mild to moderate (4-6 mm); mixed dentition; age ≤ 9 years at the beginning of the treatment; stage CS1 or CS2 of maturation of the cervical vertebrae analysis (CVM) at the beginning of the treatment. Ten subjects were treated with a lip bumper, and ten with the removable Schwarz appliance. The primary outcomes were the variations in dental crowding and arch dimensions from pre- to post-treatment. Results: Both the two appliances caused a statistically significant mean improvement/reduction in crowding, of 3.5 mm and 2.9 mm, for the Schwarz appliance and lip bumper, respectively. The Schwarz appliance resulted more effective in increasing arch dimension at the intercanine level, and arch perimeter, while the lip bumper achieves a higher increase in arch length. Conclusions: A lip bumper and Schwarz appliance are both useful in reducing crowding in mixed dentition. This improvement is due to the increase in dental arch dimensions, although the distribution of space resulted slightly differently between the two appliances.

4.
Clin Exp Dent Res ; 6(2): 181-187, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32250562

RESUMO

AIM: This study aimed to investigate salivary concentrations of Streptococcus mutans (S. mutans) and some Lactobacilli, and plaque index (PI) in patients wearing fixed versus removable orthodontic appliances. METHODS: A sample of 90 orthodontic patients (56 males and 34 females) was included in the study: 30 subjects (aged 21.5±1.5 years) were treated with removable clear aligners (CA), while for other 30 cases (aged 23.3±1.6 years) a fixed multibrackets appliance (MB) were utilized, and 30 patients (aged 18.2 ±1.5 years) wearied a removable positioner (RP). Salivary concentrations of S. mutans and Lactobacilli and PI were evaluated prior to start of the orthodontic treatment, after 3 months and 6 months. RESULTS: After 6 months, 40% of MB patients (12 subjects over 30) showed a concentration of S. mutans associated to high risk of developing tooth decay (CFU/ml>105 ), differently from participants wearing removable appliances (odds ratio = 5.05; 95% C.I. = 1.72-14.78; chi-square = 9.64; p = 0.0019). The same trens was observed for the concentration of Lactobacilli (odds ratio = 4.33; 95% C.I. = 1.53-12.3; chi-square = 8.229; p = 0.004). In addition, over the duration of the study, CA patients maintained PI at 0 level, while MB patients experienced a statistically significant increasing trend of PI over time, and their PI became clinically/statistically relevant after 6 months, respect to CA and RP patients. CONCLUSIONS: Comparing all the data, while, after 6 months, only about 10% of CA patients and 13.3% of RP patients achieved a microbial colonization which may lead to high risk of caries development, about 40% of MB patients - and 20% after 3 months - showed a high level of vulnerability to developing caries, which require additional strategies for plaque control and microbial colonization to be employed.

5.
Dent J (Basel) ; 8(1)2020 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-32075255

RESUMO

Accelerating orthodontic tooth movement has become a topical issue and the corticotomy seems to be the only effective and safe technique reported in the literature. Simultaneously, aesthetic orthodontic treatment with removable clear aligners has become commonly requested. The aim of this paper is to illustrate the management of facilitated aesthetic orthodontic treatment, a combined approach including piezocision corticotomy and clear aligners for orthodontic treatment. Orthodontic planning for traditional clear aligners should be modified to take advantage of the corticotomy technique in order to facilitate the most difficult orthodontic movements needed to achieve treatment completion, where each aligner will be used for four days rather than 15 days for a total time of four months. A corticotomy with a modified minimally invasive flapless piezocision technique should be performed in both jaws at the same time, before the time window of the orthodontic treatment, where the most difficult orthodontic movements are planned. Treatment planning where difficult orthodontic movements, such as anterior open-bite closure and extraction space closure, are easily managed with clear aligners and are presented as examples of facilitated aesthetic orthodontic treatment application. The combination between aesthetic treatment with clear aligners and modified piezocision corticotomy, if carefully planned, seems to represent a synergy that achieves the current goals of orthodontic treatment. The primary objectives of this combination should be facilitating difficult orthodontic movements and reducing treatment duration.

6.
BMC Pediatr ; 19(1): 294, 2019 08 22.
Artigo em Inglês | MEDLINE | ID: mdl-31438904

RESUMO

BACKGROUND: Pacifier sucking habit has been associated in the literature with alterations of dental occlusion, and it could be a predisposing factor for other poor oral habits among children. Orthodontic pacifiers have been introduced in the market aiming to reduce these disadvantages caused by the conventional type of pacifiers. The aim of this study was to evaluate the prevalence of poor oral habits and malocclusions, after usage of orthodontic pacifiers in children with primary dentition. METHODS: A sample of 198 pre-school children, aged 3-5 years, (96 males and 102 females) who had exclusively used an orthodontic pacifier were included in order to assess the level of poor oral habits and the absence/presence of dental malocclusion. Firstly, children's parents/legal guardians were given a validated questionnaire, then the children were clinically examined at a dental clinic. RESULTS: Most of the children (79.79%) had started using the orthodontic pacifier within the first 3 months of life, and the 43.49% of them continued using it over a period of 2 years. The recorded percentage for those who had used it throughout sleep was 89.39%. Mouth breathing during the night was reported for 36.04% of the children. Tongue thrust swallow affected 16.16% of the sample. The 5.56% of the data indicated the presence of fingersucking/thumbsucking habit. The noted percentages for children with lip biting, lingual interposition between teeth at rest and those with nail biting, were 5.56, 12.63 and 15.15%, respectively. The regression revealed a significant contribution between early start of using an orthodontic pacifier with the prevalence of fingersucking/thumbsucking (OR 0.13, 95% CI 0.04-0.47, p = 0.0004). This also reported a noticeable increase of the malocclusion prevalence among the female gender (OR 2.74, 95% CI 1.42-5.31), as well as those who were not exclusively breastfed (OR 2.26, 95% CI 1.17-4.37). CONCLUSIONS: Orthodontic pacifiers does not favor the development of poor oral habits, even if it has been used for a period of 2 years in children with primary dentition. Children who begin to use orthodontic pacifier between 0 and 3 months, are less likely to acquire fingersucking/thumbsucking habit. The use of an orthodontic pacifier appears not to be correlated with the prevalence of malocclusion in primary dentition, differently from what stated in literature about the conventional type of pacifier.


Assuntos
Hábitos , Má Oclusão/epidemiologia , Aparelhos Ortodônticos , Chupetas , Dente Decíduo , Pré-Escolar , Feminino , Sucção de Dedo , Humanos , Lactente , Masculino , Má Oclusão/etiologia , Respiração Bucal/epidemiologia , Hábito de Roer Unhas , Aparelhos Ortodônticos/estatística & dados numéricos , Chupetas/efeitos adversos , Chupetas/estatística & dados numéricos , Prevalência , Análise de Regressão , Comportamento de Sucção , Hábitos Linguais
7.
Cranio ; : 1-6, 2019 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-31238802

RESUMO

Objective: The aim of this study was to compare the dimensions of the upper and lower arches in children affected by OSAS with different levels of severity of obstruction. Methods: Twenty-seven Caucasian children (14 males, 13 females; mean age 6, range 5.2-6.1 years) with a diagnosis of OSAS determined by polysomnography were enrolled in this study. The dimensions of both dental arches were measured, and the data were compared among children affected by severe, moderate, and mild OSAS. Results: Statistically significant differences among the three groups revealed that children with severe OSAS had the highest values of upper intercanine and intermolar distances in the sample. Discussion: A severe OSAS grade (AHI > 10) is associated with statistically significantly higher upper intercanine and intermolar distances compared with mild and moderate grades. An early approach to OSAS in children with lateprimary dentition is auspicated in order to prevent an influence ondental arches growth.

8.
Biomed Res Int ; 2019: 7981687, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31930137

RESUMO

Background: Dental caries is a serious oral health concern with high prevalence in preschool children. Aim: To assess the association among oral health-related behaviors, socioeconomic factors, and dental caries in Italian preschool children. Design: 513 preschool children from 3 to 6 years of age, enrolled in nursery schools in central Italy, represent the population of the present study. The children underwent dental clinical examination and were divided on the basis of their caries experience in the primary dentition ("Yes" or "No"). Nonparametric analysis and univariate and multivariate logistic regression models were applied to evaluate the contribution of oral health-related behaviors and socioeconomic factors to the caries experience in the primary dentition. Results: 419 children were caries free, and 94 children had caries experience in the primary dentition, corresponding to the 18.4% of participants. Different oral health-related behaviors and socioeconomic factors resulted to be associated with caries development. In particular, the mother's foreign nationality results in a strong predictive factor. Conclusions: The multivariate logistic model revealed factors significantly affecting caries experience in the primary dentition, which were the mother's nationality, the number of dental visits in a year, and the personal impression by the mother.


Assuntos
Cárie Dentária/etiologia , Comportamentos Relacionados com a Saúde/fisiologia , Criança , Pré-Escolar , Feminino , Nível de Saúde , Humanos , Itália , Modelos Logísticos , Masculino , Mães , Saúde Bucal , Prevalência , Fatores Socioeconômicos , Dente Decíduo/fisiopatologia
9.
Head Face Med ; 14(1): 14, 2018 Sep 04.
Artigo em Inglês | MEDLINE | ID: mdl-30180903

RESUMO

In literature there are few reports about multiple CGCG. But this is the first report of bilateral CGCG of the mandibular angles in three females from the same family.This report describes three cases of females from the same family - a mother and two young daughters - with bilateral CGCG in their jaw angles. All the lesions were surgically removed and the histopathologic diagnosis was always identical: giant cell central granulomas, with patterns that were absolutely superimposable between them and with that of the mother.The hypothesis is that this presentation of CGCG may be defined as hereditary bilateral CGCG of the mandibular angles (or also, cherubism-like lesions).


Assuntos
Querubismo/genética , Predisposição Genética para Doença , Granuloma de Células Gigantes/genética , Doenças Mandibulares/genética , Monitorização Fisiológica/métodos , Biópsia por Agulha , Criança , Feminino , Granuloma de Células Gigantes/diagnóstico por imagem , Granuloma de Células Gigantes/patologia , Granuloma de Células Gigantes/cirurgia , Humanos , Imuno-Histoquímica , Doenças Mandibulares/diagnóstico por imagem , Doenças Mandibulares/patologia , Doenças Mandibulares/cirurgia , Pessoa de Meia-Idade , Procedimentos Cirúrgicos Bucais/métodos , Linhagem , Prognóstico , Radiografia Panorâmica/métodos , Doenças Raras , Medição de Risco
10.
Biomed Res Int ; 2018: 7296289, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30046603

RESUMO

Purpose: The purpose of this cross-sectional study is to evaluate the presence of any correlations between dysfunctions related to visual impairments and dental occlusion. Methods: The test group included 34 subjects (21 males and 13 females; mean age 11 ± 2 years) randomly selected with the following inclusion criteria: absence of any diagnosis for problems at visual level except those related to refractive defects, visual acuity of at least 1.0, absence of any syndrome or malformation in the craniofacial area, good general health, and absence of any systemic disease able to influence the vision or the craniofacial growth. They underwent visual clinical tests to evaluate the presence of fusional vergence defects and amplitude. Each patient underwent an orthodontic clinical exam and the occlusal molar relationship of each subject was recorded and considered as occlusal variable. A statistical analysis with Chi-Squared test was performed in order to analyze the associations between the visual defects and the occlusal variable. Results: A statistically significant association between the molar occlusal relationship and the occurrence of exodeviations was observed. The percentage of subjects presenting fusional amplitudes with convergence lower of the cut-off value was statistically significantly higher in the group of occlusal molar second class. Conclusions: The results obtained show that there is an association between occlusal second molar class and fusional vergence defects.


Assuntos
Oclusão Dentária , Transtornos da Visão , Adolescente , Criança , Estudos Transversais , Exotropia , Feminino , Humanos , Itália , Masculino , Dente Molar
11.
BMC Oral Health ; 18(1): 54, 2018 04 02.
Artigo em Inglês | MEDLINE | ID: mdl-29609572

RESUMO

BACKGROUND: Pulpotomy is the surgical removal of the entire coronal pulp with preservation of the radicular pulp vitality. The purpose of this retrospective study was to evaluate the clinical and radiographic success of pulpotomy of primary molars using two materials, biodentine and calcium hydroxide. METHODS: Records of 400 primary molars in 360 paediatric participants (mean age: 7.5 ± 1.6 years, ranging from 5 to 9 years) with dental caries who required pulp therapy were included in this study. Biodentine was used on 200 teeth, and calcium hydroxide (CH) was used on another 200 teeth, as a pulpotomy material. Clinical and radiographic evaluation was performed after 9 and 18 months. Statistical analysis was evaluated with the chi-squared test, and the level of significance was set at p < 0.05. RESULTS: The treatment success with CH was 85.5% after 9 months and 79.5% after 18 months, while the success rate of biodentine was 94% after 9 months and 89.5% after 18 months. The statistical analysis with the Chi-squared test showed that the clinical and radiographic success rate with biodentine was significantly higher than CH (p < 0.05). CONCLUSIONS: Biodentine exhibited a higher clinical and radiographic success rate compared to CH. However, besides the clinical results, biodentine has some disadvantages, such as higher costs, compared to CH.


Assuntos
Compostos de Cálcio/uso terapêutico , Hidróxido de Cálcio/uso terapêutico , Agentes de Capeamento da Polpa Dentária e Pulpectomia/uso terapêutico , Pulpotomia/métodos , Silicatos/uso terapêutico , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Dente Molar/cirurgia , Radiografia Dentária , Estudos Retrospectivos , Resultado do Tratamento
12.
J Oral Implantol ; 44(3): 184-191, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29436942

RESUMO

The aim of this study was to evaluate the reliability of 6-mm-long implants compared with normal-length implants placed in a vertical augmented atrophic posterior mandible, supporting cemented single crowns. Thirty-six patients with bilateral posterior edentulous mandible and presenting a bone availability height less than 9 mm from the mandibular canal were enrolled in this study. Patient hemiarches were randomized to receive both 6-mm-long and normal-length implants (10 mm). The technique used for the vertical bone augmentation was the "sandwich" technique, using a bone substitute block as graft. The data outcomes at 1 year postloading follow-up were the loss of implants and complications. Eighty-six 6-mm-long implants and 84 normal implants were inserted. Five short implants and 13 normal implants were lost. In 28 patients, complications occurred, and in 21 cases, the complication was present on the side of the ridge vertical augmentation. From the statistical analysis, the association between the side of the ridge augmentation and the side of occurrence of the complication was statistically significant ( P < .05). The results from this trial suggest short implants can be preferred over vertical bone augmentation for the placement of longer implants in the rehabilitation of edentulous posterior mandibles. These initial results must be confirmed by larger and longer follow-ups of 5 years or more.


Assuntos
Aumento do Rebordo Alveolar , Substitutos Ósseos , Implantes Dentários , Aumento do Rebordo Alveolar/métodos , Transplante Ósseo , Implantação Dentária Endo-Óssea , Planejamento de Prótese Dentária , Prótese Dentária Fixada por Implante , Falha de Restauração Dentária , Seguimentos , Humanos , Mandíbula , Boca , Reprodutibilidade dos Testes , Resultado do Tratamento
13.
Minerva Stomatol ; 67(1): 20-25, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28975773

RESUMO

BACKGROUND: The purpose of this study was to evaluate the sensitivity of teeth with MIH in children before and after the use of a tooth mousse containing casein phosphopeptide and amorphous calcium phosphate (CPP-ACP). METHODS: Forty patients, both males and females, aged from 8 to 13 years old that had a molar with MIH hypersensitivity were included in this study. In the test group (20 subjects), a tooth mousse with CPP-ACP was used while fluoride toothpaste was used in the control group. Dental sensitivity to mechanical and thermal stimuli was evaluated before (T0) and 120 days after the beginning of the treatment (T1). RESULTS: In the test group, the thermal sensitivity decreased significantly (P<0.05) from T0 to T1 (2.4±0.6 to 1.1±0.4) while in the control group resulted very similar (from 2.3±0.5 to 2.2±0.4). Similarly, mechanical sensitivity decreased significantly (P<0.05) from 7.8±1 to 3.8±0.6 while in the control group decreased not significantly (from 7.5±1.3 to 7.2±0.8). No significant difference (P>0.05) was observed by comparing males with females. CONCLUSIONS: The use of the remineralizing agent containing CPP-ACP resulted in a significant improvement in dental sensitivity in patients with MIH.


Assuntos
Caseínas/uso terapêutico , Hipoplasia do Esmalte Dentário/tratamento farmacológico , Adolescente , Criança , Feminino , Humanos , Masculino , Estudos Prospectivos
14.
ScientificWorldJournal ; 2017: 4385423, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28913411

RESUMO

AIM: The aim of this retrospective study was to evaluate the clinical and radiographic success of pulpotomy on primary molars performed by dental students compared to that performed by an expert operator. METHODS: The study was conducted on 142 second primary molars in 102 children. The patients were randomly selected from the available records. The test group (treated by dental students) included 51 subjects (28 males and 23 females, mean age: 7.2 ± 1) and the control group included 51 children (29 males and 22 females, mean age: 7.4 ± 1.2 years). After pulpotomy, a clinical and radiographic evaluation after 12 months was performed. Chi-square test and odds ratio were calculated and significance level was set at p < 0.05. RESULTS: The success rate was significantly lower, 81.6% (p < 0.05), in the test group than in the control group (93%). The test group showed less clinical and radiographic success (86% and 80%, resp.) compared to the control group (97.2% for clinical success and 93% for radiographic success). CONCLUSIONS: Pulpotomy with MTA is an effective method that ensures a good percentage of success. The clinical experience of the operator is a contributing factor.


Assuntos
Compostos de Alumínio/administração & dosagem , Compostos de Cálcio/administração & dosagem , Óxidos/administração & dosagem , Médicos , Pulpotomia/normas , Silicatos/administração & dosagem , Estudantes de Odontologia , Criança , Competência Clínica , Combinação de Medicamentos , Feminino , Humanos , Masculino , Razão de Chances , Pulpotomia/métodos , Estudos Retrospectivos , Resultado do Tratamento
15.
BMJ Open ; 7(8): e016043, 2017 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-28821522

RESUMO

INTRODUCTION: Several techniques have been proposed to manage dental fear/dental anxiety (DFA) in children and adolescents undergoing dental procedures. To our knowledge, no widely available compendium of therapies to manage DFA exists. We propose a study protocol to assess the evidence regarding pharmacological and non-pharmacological interventions to relieve dental anxiety in children and adolescents. METHODS AND ANALYSIS: In our systematic review, we will include randomised trials, controlled clinical rials and systematic reviews (SRs) of trials that investigated the effects of pharmacological and non-pharmacological interventions to decrease dental anxiety in children and adolescents. We will search the Cochrane Database of Systematic Reviews, the Cochrane Database of Abstracts of Reviews of Effects=, the Cochrane Central Register of Controlled Trials, PubMed, PsycINFO, Cumulative Index to Nursing and Allied Health Literature and the Web of Science for relevant studies. Pairs of review authors will independently review titles, abstracts and full texts identified by the specific literature search and extract data using a standardised data extraction form. For each study, information will be extracted on the study report (eg, author, year of publication), the study design (eg, the methodology and, for SRs, the types and number of studies included), the population characteristics, the intervention(s), the outcome measures and the results. The quality of SRs will be assessed using the A Measurement Tool to Assess Reviews instrument, while the quality of the retrieved trials will be evaluated using the Cochrane Handbook for Systematic Reviews of Interventions criteria. ETHICS AND DISSEMINATION: Approval from an ethics committee is not required, as no participants will be included. Results will be disseminated through a peer-reviewed publications and conference presentations.


Assuntos
Ansiedade ao Tratamento Odontológico/terapia , Odontologia Baseada em Evidências , Medo , Odontopediatria , Ansiedade ao Tratamento Odontológico/tratamento farmacológico , Humanos , Projetos de Pesquisa , Revisões Sistemáticas como Assunto
16.
Biomed Res Int ; 2017: 2916953, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28261607

RESUMO

Aim. Since cone beam computed tomography (CBCT) has been used for the study of craniofacial morphology, the attention of orthodontists has also focused on the mandibular condyle. The purpose of this brief review is to summarize the recent 3D CBCT images of mandibular condyle. Material and Methods. The eligibility criteria for the studies are (a) studies aimed at evaluating the anatomy of the temporomandibular joint; (b) studies performed with CBCT images; (c) studies on human subjects; (d) studies that were not clinical case-reports and clinical series; (e) studies reporting data on children, adolescents, or young adults (data from individuals with age ≤ 30 years). Sources included PubMed from June 2008 to June 2016. Results. 43 full-text articles were initially screened for eligibility. 13 full-text articles were assessed for eligibility. 11 articles were finally included in qualitative synthesis. The main topics treated in the studies are the volume and surface of the mandibular condyle, the bone changes on cortical surface, the facial asymmetry, and the optimum position of the condyle in the glenoid fossa. Conclusion. Additional studies will be necessary in the future, constructed with longitudinal methodology, especially in growing subjects. The limits of CBCT acquisitions are also highlighted.


Assuntos
Tomografia Computadorizada de Feixe Cônico , Articulação Temporomandibular/diagnóstico por imagem , Adolescente , Adulto , Osso e Ossos/diagnóstico por imagem , Criança , Feminino , Humanos , Imageamento Tridimensional/métodos , Masculino , Mandíbula/diagnóstico por imagem , Côndilo Mandibular/diagnóstico por imagem , Movimento , Transtornos da Articulação Temporomandibular/diagnóstico por imagem , Adulto Jovem
17.
Int J Immunopathol Pharmacol ; 29(4): 778-783, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27106276

RESUMO

INTRODUCTION: Studies on biomaterials involve assays aimed to assess the interactions between the biomaterial and the cells seeded on its surface. However, the morphology of biomaterials is heterogeneous and it could be tricky to standardize the results among different biomaterials and the classic plastic plates. In this light, we decided to create, by means of computer-aided design (CAD) technology, a standardized sample model, with equal shape and sizes, able to fit into a classic shape of a 96-wells tissue culture plate (TCP). METHODS: The design of this sample consists of a hole in the top in order to allow the injected cells to settle without them being able to slip from the sides of the sample to the bottom of the TCP wells. This CAD project is made using the software Pro-Engineer. The sample will totally fill the wells of the 96-well TCP. Dental pulp stem cells have been used to assess the ability of the different sample to support and promote the cell proliferation. RESULTS: Twelve titanium, 12 gold-palladium, and 12 zirconium oxide customized samples were designed by means of the software cam powermill, by importing the .stl file created in Pro-Engineer software. The proliferation rate of the tested scaffolds showed to be similar to the control in the group with the customized shape. CONCLUSION: We think that our method can be useful to test different types of scaffolds when a greater accuracy of the measurements is desirable in order to verify the cell behavior of these scaffolds. Our innovative method can improve the standardization process in the evaluation of cell behavior on different biomaterials to open the way to more reliable tests on biomatrices functionalized with drugs or growth factors applied to the future regenerative medicine.


Assuntos
Materiais Biocompatíveis/farmacologia , Medicina Regenerativa/métodos , Tecidos Suporte/química , Adulto , Proliferação de Células/efeitos dos fármacos , Células Cultivadas , Desenho Assistido por Computador , Polpa Dentária/efeitos dos fármacos , Humanos , Teste de Materiais/métodos , Paládio/farmacologia , Células-Tronco/efeitos dos fármacos , Titânio/farmacologia , Zircônio/farmacologia
18.
Int J Dent ; 2015: 876931, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25945093

RESUMO

Aim. This case-control retrospective study is aimed at assessing if obese adolescents need more orthodontic treatment in comparison with normal-weight patients of the same age. Methods. The test group included 100 obese subjects (50 males and 50 females; average age: 13.09 ± 1.19 years old) and the control group included 100 normal-weight patients matched for age and sex (50 males and 50 females; average age: 13.07 ± 1.26 years old). Clinical examinations were conducted on dental casts to assess the need of orthodontic treatment, by using the Index of Orthodontic Treatment Need (IOTN) (DHC, dental health component; AC, aesthetic components). Results. No statistically significant difference (P > 0.05) was observed between the two groups with regard to AC. Obese females showed a significant (P < 0.05) higher percentage of DHC 3 (32%) in comparison to the normal-weight girls (22%); for the other grades of DHC and for the single kind of malocclusion, no significant difference was found. Conclusions. Obese adolescents showed a similar need for orthodontic treatment compared to normal-weight patients of the same age. However, in obese females, a slightly greater need for orthodontic treatment was observed, compared to normal-weight patients.

20.
Clin Oral Implants Res ; 26(4): e62-e67, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24438442

RESUMO

OBJECTIVE: The aim of this systematic review and meta-analysis was to assess the role of smoking as a risk factor for peri-implantitis. MATERIAL AND METHODS: Six electronic databases and a manual search resulted in 5876 unique publications. After selection, only seven studies were included in the systematic review. Dichotomous data were expressed as risk ratios (RRs) and 95% confidence intervals (CIs). A generic inverse variance statistical model was used. Due to the expected interstudy heterogeneity, a random effect model was used for both data types. Heterogeneity was assessed with the Cochrane χ(2) and I(2) tests. The pooled effect was considered significant for a P-value <0.05. RESULTS: The implant-based meta-analysis revealed a higher and significant risk of peri-implantitis in smokers (RR: 2.1, 95% CI: 1.34-3.29, P = 0.001) compared with nonsmokers, but the patient-based meta-analysis did not reveal any significant differences for risk of peri-implantitis in smokers (RR: 1.17, 95% CI: 0.78-1.75, P = 0.46). No evidence of significant heterogeneity was detected for the two analyses (χ(2) = 0.64, P = 0.89; I(2) = 0% and χ(2) = 2.44, P = 0.30; I(2) = 18%, respectively, for implant- and patient-based meta-analyses). CONCLUSION: There is little evidence that smoking is a risk factor for peri-implantitis. However, given the low number of included studies, future studies are needed to confirm these results.


Assuntos
Peri-Implantite/etiologia , Fumar/efeitos adversos , Humanos , Fatores de Risco
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