Cleaning capacity promoted by motor-driven or manual instrumentation using ProTaper Universal system: Histological analysis.
OBJECTIVE
The aim of this study was to assess the cleaning capacity of the Protaper system using motor-driven or manual instrumentation.


METHODS
Ten mandibular molars were randomly separated into 2 groups (n = 5) according to the type of instrumentation performed, as follows: Group 1 - instrumentation with rotary nickel-titanium (Ni-Ti) files using ProTaper Universal System (Dentsply/Maillefer); and, Group 2 - instrumentation with Ni-Ti hand files using ProTaper Universal (Dentsply-Maillefer). Afterwards, the teeth were sectioned transversely and submitted to histotechnical processing to obtain histological sections for microscopic evaluation. The images were analyzed by the Corel Photo-Paint X5 program (Corel Corporation) using an integration grid superimposed on the image.


RESULTS
Statistical analysis (U-Mann-Whitney - P < 0.05) demonstrated that G1 presented higher cleaning capacity when compared to G2.


CONCLUSIONS
The rotary technique presented better cleaning results in the apical third of the root canal system when compared to the manual technique.
Department of Restorative Dentistry, Araraquara School of Dentistry, State University of São Paulo, Araraquara, SP, Brazil.
Matheus Franco
MF
da Frota
Idomeo Bonetti
IB
Filho
Fábio Luiz Camargo Villela
FL
Berbert
Emilio Carlos
EC
Sponchiado
André Augusto Franco
AA
Marques
Lucas da Fonseca Roberti
Lda F
Garcia
Cleaning capacity; endodontics; manual instrumentation; rotatory instrumentation