RESUMO
Objective: To evaluate the efficacy of rotary Kedo-S and hand K-files in shaping ability in primary canines using cone beam computed tomography. Material and Methods: Thirty extracted primary maxillary and mandibular canines were selected. Using cone beam computed tomography the teeth were scanned before instrumentation. In Group I, the teeth were prepared using stainless steel K file up to the size of 40. In the Group II teeth, U1 size Kedo-S rotary file was used in crown down technique. The instrumented teeth were scanned again with cone beam computed tomography and the images were compared. Results: The canal taper was more conical for rotary Kedo-S files as compared to K-files, which was statistically significant. Conclusion: Canal preparation with Rotary files resulted in more conical canals when compared to manual instrumentation in primary teeth that contributes to more uniform obturation. (AU)
Objetivo: Avaliar a eficácia da instrumentação rotatória com limas Kedo-S e instrumentação manual com limas Kerr na modelagem de caninos decíduos utilizando tomografia computadorizada de feixe cônico (TCFC). Material e Métodos: Foram selecionados 30 caninos decíduos superiores e inferiores extraídos. Usando a TCFC, os dentes foram escaneados previamente a instrumentação. No Grupo I, os dentes foram confeccionados com limas de aço inoxidável até o tamanho 40. Nos dentes do Grupo II, utilizou-se a lima rotatória Kedo-S tamanho U1 na técnica coroaápice. Os dentes instrumentados foram novamente escaneados por TCFC e as imagens foram comparadas. Resultados: A conicidade do canal foi maior no grupo com instrumentação rotatória em comparação com a instrumentação manual, com diferença estatística significante entre eles. Conclusão: O preparo do canal com o Rotary resulta em canais mais cônicos em comparação com a instrumentação manual em dentes decíduos, o que contribui para uma obturação mais uniforme.(AU)
Assuntos
Pulpectomia , Dente Decíduo , Dente Canino , Tomografia Computadorizada de Feixe CônicoRESUMO
Aim: The paradigm of etiology of early childhood caries (ECC) is shifting toward genetics. Of various inherited factors, blood group of an individual is genetically determined. The aim of the study is to determine if blood group of an individual will serve as a potential risk factor in the development of ECC. Materials and Methods: A cross-sectional study was conducted in Chennai. Blood samples were collected from a total of 500 children <71 months of age for determination of the blood group. Of which 96 children (24 per blood group) were randomly selected and were included in the study. Oral screening of the selected children was done by a pediatric dentist who was blinded to the blood group of the children. Decayed, extracted, and filling index was noted. Details on other associated factors for the development of ECC such as the socioeconomic status, oral hygiene measures, diet, and feeding practices were collected by directly interviewing the parents through a questionnaire. Statistical analysis was done using Chi-square and Kruskal–Wallis test and post hoc Tukey test with significance level set at 0.05. Results: Intergroup analysis of the associated factors showed no significant differences between the children of different blood groups. A statistically significant relation was noted between the blood groups and development of ECC (P = 0.025). Conclusion: Blood group is a potential risk indicator for the development of ECC.