Effect of larger apical size on the quality of preparation in curved canals using reciprocating instruments with different heat thermal treatments.
Int Endod J
; 52(11): 1652-1659, 2019 Nov.
Article
em En
| MEDLINE
| ID: mdl-31132158
ABSTRACT
AIM:
To evaluate the influence of larger apical canal enlargement in curved canals using reciprocating systems subjected to various heat treatments.METHODOLOGY:
Ninety mandibular premolars with root curvatures ranging from 20° to 30° were selected and scanned by microcomputed tomography (micro-CT) before and after root canal preparation with reciprocating systems (n = 30) Reciproc Blue (RB size 25, .08 taper and size 40, .06 taper; VDW, Munich, Germany), WaveOne Gold (WOG size 25, .07 taper and size 35, .06 taper; Dentsply Sirona, Ballaigues, Switzerland) and ProDesign R (PDR size 25, .06 taper and size 35, .05 taper; Easy Dental Equipment, Belo Horizonte, Brazil). Canal transportation, untouched areas, and apical and total root canal volumes were measured. Statistical analysis was performed with the nonparametric Kruskal-Wallis and Dunn's tests and a significance level set at 5%.RESULTS:
The between-group comparison revealed no significant difference in untouched areas, canal transportation, and apical root canal volume among the groups (P > 0.05). However, WOG size 35, .06 taper was associated with a significant increase in the percentage of total canal volume in comparison to the PDR size 35, .05 taper (P < 0.05). The within-group comparison revealed a significant decrease in untouched areas, increase in apical and total root canal volume for all groups when using a larger instrument (P < 0.05). There was no significant difference in transportation among the groups and when a larger apical preparation was created (P > 0.05).CONCLUSIONS:
Larger apical enlargement of curved canals was associated with a decrease in untouched areas, an increase in root canal volume and maintenance of canal trajectory. In addition, all systems were safe and provided similar root canal shapes.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Instrumentos Odontológicos
/
Temperatura Alta
País/Região como assunto:
America do sul
/
Brasil
/
Europa
Idioma:
En
Revista:
Int Endod J
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Brasil