Scanning electronic microscopy analysis of the apical surface after of root-end resection with different methods.

Autor:	Bernardes RA; Department of Dentistry, Endodontics and Dentistry Material, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil; Brazilian Dental Association, Taguatinga, Federal District, Brazil., Húngaro Duarte MA, Vivan RR, Baldi JV, Vasconcelos BC, Bramante CM
Jazyk:	angličtina
Zdroj:	Scanning [Scanning] 2015 Mar-Apr; Vol. 37 (2), pp. 126-30. Date of Electronic Publication: 2015 Feb 04.
DOI:	10.1002/sca.21188
Abstrakt:	To compare the time dispensed and the surface characteristics when a root-end resection was performed with a surgical ultrasonic device (VarioSurg, NSK, Japan) or with a Zekrya bur. Forty distal roots of freshly extracted mandibular molars were selected and divided into four different groups: (G1) stainless steel insert with ultrasound; (G2) diamond insert with ultrasound; (G3) stainless steel and diamond inserts with ultrasound, and (G4) Zekrya burs. The time required for the root-end resection was timed and the surface characteristics were evaluated via scanning electronic microscopy. The median times for the root-end resections were: 115.9 s for G1, 249.8 s for G2, 112.7 s for G3, and 7.44 s for G4, the latter presented a smoother root-end surface. There was no statistically significant difference in the comparisons between G3 group and G4 group (Zekrya burs). The other groups where the root-end resections were with ultrasonic devices proportioned a prolonged time to resection with irregular surfaces. (© Wiley Periodicals, Inc.)
Databáze:	MEDLINE
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