%0 Journal Article
%T The influence of different methods of cervical magnifying in the attainment of the lenght of work in first mesio-vestibular canals tests of superior molar
%A Georgia Ribeiro MARTINI
%A Jos¨¦ Roberto VANNI
%A ¨˘lvaro DELLA BONA
%A Dieison LAZARETTI
%J RSBO
%D 2007
%I University of Joinville
%X The magnifying of radicular canals using different types of methodsand instruments is focus of innumerable researches in Deontology.The objective of this study was to determine the influence of four distinct systems of rotatory instruments for cervical widening in thedetermination of the real length of work (CRT). Through the comparisonamong these four types of possible different instruments to be used bythe professional it was possible to evaluate the most effective for the cervical magnifying of arched radicular canals. The experimental stage was carried through in the Laboratory of Endodontia of the College of Odontologia of the University of Passo Fundo (FOUPF). The present in vitro study involved 40 roots of first mesio-vestibular tests of molar permanent human superiors, gotten in the Tooth Bank of the College of Odontologia of the University of Passo Fundo (FOUPF). The 40 samples have been divided randomly in 4 groups of 10 teeth each,which have been submitted to the conventional endodontic access. After the verification of the real CRT, the methods of cervical magnifying in each group have been applied, being group 1 with Gates-Glidden drills(Dentsply Maillefer, Ballaigues, Switzerland), group 2 with rotatory nickel-titanium wideners ORIFICE OPENERS (SybronEndo, Glendora,the USA), group 3 with nickel-titanium instruments SX and the S1 instrument (ProTaper - Dentsply Maillefer, Ballaigues, Switzerland), and group 4 with LA Axxess (SybronEndo, Glendora, USA). After that the CRT was verified again. The difference between the first and the second odontometry has been calculated (ANOVA) and the test of multiple comparisons of Tukey (p ˇÜ 5%) identified significant differences between the studied groups. The rotatory nickel-titanium instrument SX and S1 of the ProTaper system has presented the best results and the rotatory steel instruments inox Gates Glidden (drills) have presented the worst ones.
%K cervical magnifying
%K rotatory systems
%K Gates- Glidden drills.
%U http://univille.edu.br/community/depto_odontologia/VirtualDisk.html?action=downloadFile&file=influencia_diferentes_metodos_ampliacao.pdf&current=%2FODONTOLOGIA%2FRSBO%2FRSBO_v.4_n.2_novembro_2007