The Filling Evaluation of Lateral Canals in the Root Canal Obturation
2020
A complexidade anatomica dos canais radiculares, por exemplo, sua forma, curvatura e diversidade da curvatura do raio, bem como a presenca de istmo de alto indice e canais laterais, sao fatores importantes a serem levados em consideracao na terapia endodontica. Assim, o objetivo neste estudo foi avaliar o preenchimento total de canais laterais simulados com dois diferentes cimentos endodonticos. Foram utilizados 8 dentes anteriores extraidos por razoes periodontais. Foram confeccionados canais laterais com uma broca carbide esferica ¼ a uma distância de 4 mm do apice radicular. Em seguida, os dentes foram radiografados no sentido anteroposterior. Os canais radiculares destes dentes foram preparados utilizando-se de um sistema reciprocante 25.08 acionados por motor eletrico X Smart Plus ate o comprimento de trabalho utilizando hipoclorito de sodio 2,5% como solucao irrigante. Os dentes foram divididos em 2 grupos (n=4) de acordo com diferentes cimentos endodonticos (AH Plus ou Bio C Sealer). Os canais foram secos com pontas de papel absorvente, depois foram preenchidos com cone medio e diferentes cimentos endodonticos. O preenchimento total de canais laterais simulados foram avaliados a partir de novas radiografias digitais realizadas apos obturacao dos dentes. Os canais laterais simulados nao foram completamente preenchidos, independentemente do cimento endodontico utilizado, e os resultados demonstraram que os diferentes cimentos avaliados nao preencheram os canais radiculares laterais simulados.
Palavras-chave: Endodontia. Obturacao do Canal Radicular. Materiais Restauradores do Canal Radicular.
Abstract
The anatomical complexity of root canals, for instance, their shape, curvature and radius curvature diversity, as well as the presence of high index isthmus and lateral canals are important factors to be taken into consideration in endodontic therapy. Thus, the aim of the present study was to assess complete filling of simulated lateral canals with two different endodontic cements. Eight anterior teeth extracted due to periodontal reasons were used in the experiment. Lateral canals were opened with ¼ spherical-shaped carbide drill 4 mm away from the root apex. Teeth were subjected to X-ray in anteroposterior position. The root canals of these teeth were prepared with the aid of a 25.08 reciprocating system in electrically driven motor X Smart Plus for its working length by using 2.5% sodium hypochlorite as irrigating solution. The teeth were divided into 2 groups (n=4) according to different endodontic cements (AH Plus or Bio C Sealer). Root canals were dried with paper points, afterwards were filling with medium cone and different endodontic cements. The complete filling of simulated lateral canals was assessed based on new digital radiographs taken after teeth filling. The simulated lateral canals were not completely filled, regardless of the used endodontic cement. Results have shown that the different assessed cements did not fill the simulated lateral root canals.
Keywords: Endodontics. Root Canal Filling. Root Canal Sealer Materials.
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