Aim: To evaluate the influence of operator's experience comparing rotary and reciprocating shaping systems on simulated root canals. Methodology: Ninety resin blocks with simulated root canals were distributed to six groups (15 for each group); three groups of instrumentation were assigned to undergraduate students and three to specialists in endodontics. For each category of experience, the shaping was performed with Protaper Gold™, WaveOne Gold™ and Stainless-steel K-File (Control). Resin blocks were inked, then pre- and post-instrumentation photographic images were taken to be superimposed by an imaging software (GIMP 2.10.10) and analyzed by ImageJ software. After the use of each instrument, a rinse with NaOCl 2,5% was made. The outcomes evaluated were the presence of apical zip, ledges, perforation, the centering ability and the amount of resin removed. Results: The photographic analysis of the resin blocks showed a prevalence of apical zips within the undergraduate groups; the expert groups realized a higher number of ledges, while the number of perforations resulted to be higher in the inexpert Stainless-steel control group. The amount of resin removed was significantly higher in the undergraduate WOG group, as well as the centering ability. Conclusions: The rotary and reciprocating systems provide valid operative standards; by the way, inexpert operators showed major difficulties managing the reciprocating system. More studies are required to assess this parameter.

Influence of operator's experience in three different instrumentation techniques : An in vitro study / I.L. Prova, I. Perondi, S. Corbella, R. Fornara, S. Taschieri. - In: GIORNALE ITALIANO DI ENDODONZIA. - ISSN 1121-4171. - 35:1(2021 Jun), pp. 10-17. [10.32067/GIE.2021.35.01.11]

Influence of operator's experience in three different instrumentation techniques : An in vitro study

S. Corbella;S. Taschieri
Ultimo
2021-06

Abstract

Aim: To evaluate the influence of operator's experience comparing rotary and reciprocating shaping systems on simulated root canals. Methodology: Ninety resin blocks with simulated root canals were distributed to six groups (15 for each group); three groups of instrumentation were assigned to undergraduate students and three to specialists in endodontics. For each category of experience, the shaping was performed with Protaper Gold™, WaveOne Gold™ and Stainless-steel K-File (Control). Resin blocks were inked, then pre- and post-instrumentation photographic images were taken to be superimposed by an imaging software (GIMP 2.10.10) and analyzed by ImageJ software. After the use of each instrument, a rinse with NaOCl 2,5% was made. The outcomes evaluated were the presence of apical zip, ledges, perforation, the centering ability and the amount of resin removed. Results: The photographic analysis of the resin blocks showed a prevalence of apical zips within the undergraduate groups; the expert groups realized a higher number of ledges, while the number of perforations resulted to be higher in the inexpert Stainless-steel control group. The amount of resin removed was significantly higher in the undergraduate WOG group, as well as the centering ability. Conclusions: The rotary and reciprocating systems provide valid operative standards; by the way, inexpert operators showed major difficulties managing the reciprocating system. More studies are required to assess this parameter.
apical zip; in vitro study; protaper gold; reciprocating; WaveOne gold
Settore MED/28 - Malattie Odontostomatologiche
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/892958
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