Evaluation of adaptation of root canal filled with three obturation techniques in vitro
10.3760/cma.j.issn.1002-0098.2010.08.013
- VernacularTitle:三种根管充填技术根管系统充盈致密度的实验观察
- Author:
Xiu-Juan ZHOU
1
;
Yan-Mei DONG
;
Xue-Jun GAO
Author Information
1. 北京大学口腔医学院口腔医院
- Keywords:
Root canal obturation;
Cold lateral compaction technique;
Warm vertical compaction technique;
GuttaFlow technique
- From:
Chinese Journal of Stomatology
2010;45(8):494-497
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the adaptation of root canal filled with three obturation techniques in vitro. Methods Fifty-seven cleaned and shaped premolars were divided into three groups,each group including 10 single root canal premolars and 9 double root canal premolars, and filled respectively with following techniques : GuttaFlow paste with single master cone ( GF group), cold lateral compaction technique with AH plus sealer ( LC group), warm vertical compaction technique with AH plus sealer (VC group). The roots were invested and sectioned at 1 mm interval from crown to apex using a microtome saw under water cooling. Both surfaces of the sections were digitally photographed and measured using a stereomicroscope. The number of sections with voids and the area of voids were measured and analyzed. Results The frequency of sections with voids: VC group (21.4%, 76/355 ) was significantly lower than GF group(47. 7% , 173/363 ) and LC group( 52. 6%, 190/361 ), P < 0. 0167. There was no significant difference between GF and LC group( P > 0. 0167 ). The percentage of voids area (AV%) : GF group was significantly higher than LC and VC group ( P = 0. 000, P = 0. 008 ). The median of GF group was 2. 67, LC group was 1.55, VC group was 1.01. No significant difference between VC and LC group ( P = 0. 076). The filling quality of isthmus: 86% ( 85/99 ) isthmus were well filled in VC, significantly higher than GF group(55% ,43/78) and LC group(58% ,49/84), P <0. 0167. There was no significant difference between GF and LC group(P > 0. 0167). Conclusions The adaptation of root canal filled with warm vertical compaction technique was superior to cold lateral compaction technique and GuttaFlow technique.
