Análise anátomo-cirúrgica das técnicas de instrumentação convencional, telescópica e de Christie & Peikoff

Abstract

Fifty-tri•et txtractid human upper doul) ie-riited pre -moam presenti^sg ifraed roots were used.The ri<Ito were tmbeddtd in a icsís block on which guiding slits was made. The opeiimes were then inatottd with pl^ter into a split rnuufle. Such blocks were atíached on wo-oden plates and otctiintd in a microtome for hard tissue usisga diamond disk. The otctiino esvolved the cervical middle and a-pical thirds of the riito. Osce obltained, the stctiino were stained with m^ty-lene blue and photographed with a 3x standard magsfi.ca^i^on. The otctiiss, corresponding to each tooth, wem m^o^r^rted in their rtoptitivt nuufles foloc^wing the guiding slits, eatntaining the pooition and the original length of the tooth. The teet^h were diaided in three grofpo and their canais instfueenttd by the consatStoist, step-back and Christie and Peekoof^ ttchniquts rnsp^c^tiv^^ly.