Análise no Microscópio Electrónico de Varrimento da Superfície Radicular Após Instrumentação

Abstract

IntroductionAn effective non surgical mechanical treatment can be achieved with a little damage on root surface. AimsThe aim of this study is to assess the removal of root substance, the texture and morphological changes, before and after instrumentation. Root surface texture was assessed with scanning electron microscopy. Materials and MethodsTen teeth carefully extracted due to periodontal reasons were sectioned longitudinally to obtain two equal parts. Five groups of 4 surfaces each were formed. The root surfaces were debrided during 1 minute using the following instruments: gracey curettes, magnetostrictive and piezoelectric ultrasonic scaler, vector TM – system and one group uninstrumented (control). The teeth were examined by scanning electron microscopy. ResultsThe control group, showed a granular texture of cementum and this appearance was changed after instrumentation. Under SEM, curettes leave the root surface smother than the other instruments tested that leaved a similar morphological changes. Root surfaces debrided are irregular, with scratches and gouges, each one with a characteristic pattern, probably, reflecting the function of the instrument. ConclusionApparently, this study concludes that root surfaces instrumented by curettes performed a morphology and texture that is the farthest of control group, when observed to SEM.