This research explored the potential of Camellia sinensis-derived teas and active compounds to be used as treatments to prevent dentin wear. Human root dentin slabs were randomly assigned to 5 groups (n = 10) as follows: distilled water (DW, control), epigallocatechin-3-gallate (EGCG), theaflavin gallate derivatives (TF), commercial green tea (GT), and commercial black tea (BT). The samples were submitted to a pellicle formation and an erosive cycling model (5x/day, demineralization using 0.01 M hydrochloric acid/60 s) followed by remineralization (human stimulated saliva/60 min) for three days. The samples were treated for 5 min using the test group solutions between the erosive cycles. Dentin changes were assessed with profilometry analysis and FT-Raman spectroscopy. The data regarding wear were analyzed by ANOVA followed by Tukey's test (p < 0.05). EGCG, TF derivatives, and both regular teas significantly suppressed erosive dentin loss (38-47%, p < 0.05). No obvious changes in the Raman spectra were detected in the specimens; however, the DW group had a minor relationship of 2880/2940 cm-1. The phenolic contents in both green and black tea and the important catechins appear to have protective effects on dentin loss.

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Aims This case report describes an orthodontic and aesthetic rehabilitation in a patient with Turner syndrome. Methods and results Careful anamnesis was performed to find the patient's medical history. Based on dental casts, radiographies and photographies it was observed alterations in the craniofacial complex, in the occlusion and in the dental morphology. For the orthodontic treatment, rapid maxillary expansion was performed, followed by the use of fixed orthodontic appliance. At the end, aesthetic rehabilitation, with direct composite resin veneers, was utilized for the correction of existing diastema. Treatment goals were achieved by observing an improvement in facial and smile harmony. Conclusion The orthodontic treatment followed by aesthetic rehabilitation of dental morphology showed to be feasible in a patient with Turner syndrome based on an early diagnosis and craniofacial growth follow‐up.

Objective: In orthodontic patients submitted to oral hygiene instruction, what is the efficacy of orthodontic toothbrush (O-TB) versus conventional toothbrush (C-TB) on plaque and gingival index reduction in randomized and non-randomized controlled clinical trials? Methods: Electronic database search was performed on PubMed, ClinicalTrials.gov, Cochrane Library and Google Scholar. Database research, study selection, data extraction and ROBINS-I and Risk of Bias Tool 2.0 analysis were conducted by two independently examiners in duplicate. Two different meta-analyses were performedfor plaque index and gingival index, followed by the analysis of overall quality of the evidence using GRADE.Results: A total of 158 studies were identified for screening; six articles were included in qualitative synthesis, and of those, three were subjected to a quantitative synthesis (meta-analysis). Three non-randomized studies presented an overall 'low', 'moderate' and 'high' risk of bias for each one of the articles, and the three randomized clinical trials presented 'low risk' for two articles and 'some concerns' quality for the other one. The overall strength of evidence was ranked 'very low' quality for plaque index and gingival index subgroups.Conclusions: Gingival bleeding is not modified by orthodontic design toothbrush, but there is circumstantial scientific evidence for recommending the use of an O-TB instead a C-TB based on the analysis of plaque index control. Although major plaque removal of the O-TB was validated by meta-analysis, this improvement is not completely clarified which calls for further clinical studies to assess the effects of using an O-TB compared with a C-TB.

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The aim of this study was to evaluate the degree of conversion (DC), flexural strength (FS), and shear bond strength (SBS) of ceramic brackets bonded to enamel with experimental self-adhesive orthodontic composites. Functional monomers 10-methacryloyloxy-decyl-dihydrogen-phosphate (MDP) and glycerol-dimethacrylate-phosphate (GDMA-P) were used in experimental composites. They were compared to the same composite without an acidic monomer (negative control) and with enamel acid-etching prior to adhesive application (positive control). DC was evaluated by Raman micro-spectroscopy. Flexural three-point bending testing was performed in a universal testing machine. Ceramic brackets were bonded to bovine enamel and SBS was evaluated before and after 2000 thermal-cycles. Fracture patterns were surveyed with manual removal with specific pliers and analyzed by SEM. Statistics was performed using ANOVA and Tukey’s test (p < 0.05). DC of the control composite was significantly higher (p < 0.001) than that of GDMA-P and MDP. FS showed no significant difference between composites (p = 0.451). Regarding adhesion, the positive control (8.47 ± 0.88 MPa) and MDP (7.07 ± 2.69 MPa) obtained higher overall results. The predominant fracture pattern of the positive control and MDP was mixed while it was adhesive for further groups. The MDP-containing orthodontic composite attained similar adhesion to a conventional three-step orthodontic bonding system, with a similar fracture pattern and mechanical properties. Nevertheless, the presence of acidic functional monomers reduced the DC.

Congenital Zika syndrome (CZS) constitutes a recently identified malformation caused by Zika virus infection during pregnancy. Limited data is available to date on the facial dysmorphic features of these patients. This study evaluated the facial dysmorphisms of children with CZS, compared with clinically healthy children, using clinical examination and standardized photographic images. Sixty-three children with CZS (9.70 ± 3.2 months-age), and 31 Controls (8.67 ± 6.2 months-age) joined the study. Seven out of 15 indices differed between groups: midfacial height (MFH)/horizontal facial reference (HFR) (p = .0003), interalar distance/HFR (p = .0027), nasal root depth/MFH (p = .0030), posterior nasal length/MFH (p = .0002), vertical position of the ear/MFH (p <.0001), ear length/MFH (p = .0005), chin height/total facial height (CH/TFH) (p <.0001). A CH/TFH of 0.229 showed 93.9% sensitivity and 80.6% specificity in diagnosing CZS. Children with CZS had broad, short faces, decreased intercanthal distance, short posterior nasal length, prominent nasal root, broad nasal wings, and high-set and long ears. Increased chin height index provided the most accurate diagnostic potential.

Objetiva-se avaliar in vitro resistência ao cisalhamento (RC) antes e após termociclagem, módulo de flexão (MF) e grau de conversão (GC) de resinas ortodônticas auto-adesivas experimentais associadas a bráquetes cerâmicos. 48 bráquetes cerâmicos policristalinos (n 12) foram colados em esmalte bovino. Monômeros funcionais ácidos MDP (10-metacriloiloxi-decilo-dihidrogeno- fosfato) e GDMA-P (glicerol-dimetacrilato-fosfato) foram adicionados a resinas ortodônticas auto-adesivas experimentais de três passos sendo comparadas a grupos Controle Positivo e Controle Negativo. RC foi avaliada antes (n 6) e após (n 6) 2.000 ciclos térmicos. No teste de flexão de três pontos (n 3) foram confeccionadas barras de resina controle, com MDP e com GDMA-P. GC (n3) foi avaliado por micro-espectroscopia Raman. Os resultados foram analisados por ANOVA e teste de Tukey pós-hoc (p <0,05). Para RC, o Controle Positivo (8,47 ± 0,88MPa) e o MDP (7,07 ± 2,69MPa) obtiveram maiores resultados antes da termociclagem, sem diferença estatística entre eles. A RC reduziu estatisticamente para todos os grupos após a termociclagem (p <0,05) e não foi observada diferença entre os grupos. MF não mostrou diferença significativa entre as resinas (p 0,451). A resina controle obteve 84,5 ± 4,3% de GC, significativamente superior (p <0,05) ao GDMA-P e MDP (58,8 ± 4,0% e 23,0 ± 5,2%, respectivamente). A resina ortodôntica experimental incorporada com MDP obtém desempenho de ligação semelhante ao da resina convencional de três passos. No entanto, a presença de monômero ácido funcional reduz a GC.Palavras-chave: Orthodontics Dental. Materials. In vitro Techniques.