Influencia de cimentos endodonticos na efetividade e extensão apical de tecnicas de desobturação dos canais radiculares estudo in vitro

AUTOR(ES)
DATA DE PUBLICAÇÃO

1998

RESUMO

The purpose of this study was to compare the efficiency of 3 techniques (A- Gates-Glidden I hand files; B- Canal Finder; C- Ultrasonic) on removing filling material from root canal system filled with 3 different sealers (Endomethazone, Sealer 26 and Ketac Endo) and also the amount of filling material missed through the root apex during the application of these techniques. Ninety human extracted one root teeth were prepared using a step back technique and obtllrated with laterally condensed gutta-percha connected to one of the 3 sealers mentioned (3 groups of 30 teeth filled with each sealer). Each group of 30 teeth was divided in 3 groups of 10 teeth, and one of the 3 techniques in conjunction with chloroform were used to remove the filling material. During the removing of filling material from root canal, the tooth was fixed in a plastic box that had a filter paper (that was weighted before) under the tooth apex, where the lost material was received, making possible to obtain the loss of filling material in each tooth. Afier the use of the techniques, the teeth were radiographed. The total area of the canal and the area of remaining material were traced and afier quantified using a computerized image analysis system. The ratio of remaining obturation material to root canal periphery was encountered and statistically analyzed (Tuckey s test). Results showed 29,11 % of remaining gutta-percha I sealer in "A" technique, 43,94% in "B" and 48,33% in "C". Teeth filled with Endomethazone showed 33,60% of remaining material, Sealer 26 showed 33,90% and Ket~c Endo 53,45%. In conclusion, the most effective technique was liA", the worst sealer to be removed from root canal system was Ketac Endo and the loss of filling material through the root apex was the same for ali the techniques and sealers tested

ASSUNTO(S)

canal radicular - tratamento endodontia solventes cimentos dentarios

ACESSO AO ARTIGO

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