Análise das distâncias inter-radiculares nas furcas de molares e sua relação com as curetas periodontais
Analysis of furcation inter-radicular distances in molars and their relation to the periodontal instruments
Berwig, A.C.; Silveira, J.A.; Pilatti, G.L.; Santos, F.A.
Rev. odontol. UNESP, vol.35, n1, p.21-28, 2006
Resumo
O objetivo desta pesquisa foi avaliar as distâncias inter-radiculares em furcas de molares e se os instrumentos periodontais são adequados a essas dimensões. Foram utilizados 70 dentes extraídos (43 molares superiores e 27 inferiores), que foram identificados, lavados, armazenados em formol 10% e fotografados com câmera digital. As imagens foram analisadas por meio de um programa de computador, sendo obtidas as distâncias inter-radiculares em três pontos em relação ao teto da furca: A- 1 mm, B- 3 mm e C- 5 mm. As medidas das curetas periodontais (Gracey 5-6) foram tomadas de 25 instrumentos de 5 diferentes marcas (50 lâminas), utilizando-se um paquímetro digital. Todas as medidas foram realizadas por um único examinador treinado. Os resultados mostraram diferenças significativas (p < 0,05 – ANOVA) entre os pontos de medidas para as diferentes furcas. As medidas da dimensão das lâminas das curetas mostraram valores médios de 0,68 mm ± 0,05 mm, 0,72 mm ± 0,04 mm e 0,77 mm ± 0,05 mm, respectivamente, para os terços anterior, médio e posterior, sendo significativas as diferenças significativas entre as marcas (p < 0,05 – ANOVA). Conclui-se, a partir dos resultados, que, nos pontos estabelecidos para as medidas das distâncias inter-radiculares em furcas de molares, os instrumentos pesquisados apresentaram lâminas com dimensões adequadas para instrumentação periodontal.
Palavras-chave
Curetas periodontais, furcas, raspagem radicular
Abstract
The aim of this study was to determine furcation width in molars and if the periodontal instruments adequately fitted the furcation dimension. Seventy permanent teeth (43 upper molars and 27 lower molars) were extracted, identified, washed in tap water, stored in 10% formol and photographed using a digital camera. The images were analyzed using a computer software and the inter-radicular distance was determined at three points bellow the furcation summit (A = 1 mm; B = 3 mm and C = 5 mm). The dimension of twenty-five Gracey 5-6 curets (fifty blades) from five different manufacturers was determined using a digital caliper. All the measurement were made by a single blinded and trained examiner. The results showed statistically significant differences in the inter-radicular distance among the measured points (p < 0.05 - ANOVA). The means for the curets’ blade dimensions were 0.68 ± 0.05 mm, 0.72 ± 0.04 mm and 0.77 ± 0.05 mm for the upper, intermediate and lower third, respectively, with a statistically significant difference among the manufactures (p < 0.05 - ANOVA). It can be concluded that the periodontal curets used in this study presented adequate blade dimensions to be used in molar furcation during scaling and root planning procedures.
Keywords
Periodontal curets, furcations, root scaling
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