ABSTRACT
Abstract Objective: Pain is a problem during bracket removal, and more comfortable treatment is needed. This study examined the association of pain with the removal force required for ceramic brackets, compared with metal and plastic brackets, to determine which removal method resulted in less pain and discomfort. Methodology: 81 subjects (mean age, 25.1 years; 25 males and 56 females) were enrolled, from whom 1,235 brackets (407 ceramic, 432 plastic, and 396 metal) were removed. Measured teeth were distinguished at six segments. Pain was measured with a visual analogue scale (VAS) during the removal of each bracket. An additional grip was placed on the grips of debonding pliers with right-angled beaks; a mini loading cell sensor pinched by the grips was used to measure removal force during debonding. VAS and force values were statistically analyzed. The Kruskal-Wallis test followed by the Mann-Whitney U test with Bonferroni correction were performed for multiple comparisons; multiple regression analysis was also performed. Results: Forces in the upper and lower anterior segments were significantly smaller (p<0.05) than those in the other segments. Pain tended to be greater in the upper and lower anterior segments than in the posterior segments. In all segments, the removal force was greater for metal brackets than for plastic or ceramic brackets. Ceramic brackets caused significantly greater pain than plastic brackets for the upper and lower anterior segments. Debonding force was involved in the brackets, following adjustments for pain, upper left segment, age, and sex. Conclusions Pain and discomfort are likely to occur during bracket debonding.
Subject(s)
Humans , Animals , Adult , Orthodontic Brackets/adverse effects , Dental Debonding/adverse effects , Pain , CeramicsABSTRACT
Abstract Objective The aim of this study was to evaluate patients' pain levels during four different debonding procedures. The null hypothesis was that the pain perception of the patients undergoing four different debonding applications was not statistically significant different. Material and Methods One hundred and twenty orthodontic patients who underwent orthodontic debonding were included in this study. The patients were randomly divided into 4 groups according to technique used in the patients. Debonding groups were as follows: Group 1) Conventional debonding group, Group 2) Medication group (acetaminophen was given 1 hour before debonding), Group 3) Soft bite wax group, and Group 4) Soft acrylic bite wafer group. The patients' levels of anxiety and fear of pain were evaluated before debonding, and Numerical Rating Scale (NRS) was applied to evaluate their pain perception during debonding. Mann-Whitney U and Kruskal-Wallis tests were used to evaluate non-normally distributed data. Categorical data analysis were carried by chi-square and McNemar tests. The significance level was set at p<0.05. Results Anxiety scores of the patients were not statistically significant between both genders and debonding groups. In the quadrants in which the patients were perceived, the highest pain level was in the left side of the mandible. The teeth in which the highest pain level was perceived were the lower left and upper right lateral incisors. Although there was no statistically significant difference among the pain scores of the patients in each group, quadrant scores of female patients showed significant differences, being the lowest scores in the soft bite wax group. Conclusions Majority of the patients had no fear of pain before debonding. Pain levels of the patients in the conventional debonding group were not significantly different from those of the other groups, except quadrant scores of females in the soft bite wax group. The null hypothesis was accepted.
Subject(s)
Humans , Male , Female , Child , Adolescent , Toothache/etiology , Orthodontic Brackets/adverse effects , Dental Debonding/adverse effects , Pain Perception , Reference Values , Toothache/psychology , Bite Force , Pain Measurement/methods , Prospective Studies , Age Factors , Dental Debonding/methods , Dental Debonding/psychology , Dental Anxiety/physiopathology , Statistics, NonparametricABSTRACT
A etapa de remoção de aparelhos ortodônticos deve ser realizada tentando preservar, ao máximo, a estrutura dentária. Apesar de existirem vários protocolos e materiais disponíveis no mercado, alguns profissionais desconhecem os efeitos destes materiais na superfície do esmalte, o que pode contribuir para que o esmalte seja permanentemente danificado, ou desconhecem que, quando a resina não for adequadamente removida, pode ocorrer um aumento na agregação de biofilme, tornando o esmalte mais suscetível a doenças cárie e periodontal. / Objetivo / O objetivo desse trabalho foi demonstrar, por meio de um caso clínico, uma sequência de acabamento e polimento pós-terapia ortodôntica. / Métodos / Após a remoção dos braquetes, a resina residual foi evidenciada com pó dourado (Texturmarker, Benzer Dental AG, Suíça). Em seguida, foi utilizada broca multilaminada (Komet), discos Sof-Lex (3M ESPE), borrachas para acabamento Astropol e Astrobrush (Ivoclar Vivadent), escova de pelo de cabra e FlexiBuff com pasta Enamelize (Cosmedent). / Conclusão / Pôde-se concluir que a sequência de materiais utilizados foi efetiva e de fácil execução, preservando a estrutura dentária.
Subject(s)
Humans , Female , Young Adult , Orthodontic Brackets/adverse effects , Dental Debonding/adverse effects , Dental Polishing/methods , Dental EnamelABSTRACT
Objetivo: avaliar as possíveis alterações cromáticas ocorridas na superfície dos dentes (pré-tratamento ortodontico; pós-descolagem e acabamento, e pós-clareação com peróxido de hidrogênio a 35 %), bem como verificar o grau de diferença de cor entre a área que sofreu intervenção ortodôntica e a que não sofreu. Metodologia: trinta peças confeccionadas com dentes bovinos foram divididas em grupo controle (I) e experimental (II), sendo igualmente preparadas e armazenadas em saliva artificial, em estufa (37ºC), durante todo o experimento. No grupo II, os acessórios ortodônticos foram colocados em resina fotopolimeralizável, seguido da descolagem e remoção da resina remanescente. Em seguida, nos dois grupos, foi realizada a clareação com peróxido de hidrogênio a 35 %, seguindo as especificações do fabricante. Um espectrofotômetro computadorizado foi utilizado para os testes colorimétricos nos grupos I (T1 - início; T3 - pós-clareação) e II (T1 - início; T2 - pós-descolagem; T3 - pós-clareação) e os valores avaliados pelo sistema CIELAB, sendo usados apenas os valores de L* (escurecimento ou clareação do dente, numa escala de 0-100) e grau de amarelo. Resultados: houve um aumento nos valores de L* (luminosidade) entre T1/T3 para ambos os grupos e entre T2/T3 para o grupo II, e uma diminuição nos valores de grau amarelo ente T1/T3 em ambos os grupos e entre T2/T3 para o grupo II. Conclusão: não houve diferença de resposta à clareação dentária, imediatamente após a remoção do aparelho, entre dentes submetidos à colagem ortodôntica e dentes não colados, não sugerindo haver influência do provável remanescente resinoso na coloração dentária imediata.
Subject(s)
Cattle , Animals , Tooth Bleaching/adverse effects , Dental Debonding/adverse effects , Dental Enamel , Hydrogen Peroxide/administration & dosage , SpectrophotometryABSTRACT
O presente trabalho objetivou avaliar in vitro a resistência ao cisalhamento da interface de colagem de tubos de base lisa jateada com aplicaçäo de adesivo para metais e um grupo de controle formado por tubos com a base de tela preparada pelo fabricante. Utilizou-se como substrato terceiros molares inclusos. Através da microscopia eletrônica de varredura, foi observada uma camada de esmalte aprismático em todas as amostras. Apenas o grupo primer apresentou a resistência à descolagem considerada adequada para suportar as forças ortodônticas