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Comparison of two vertical condensation obturation techniques: Touch 'n Heat modified and System B.

Abstract：

AIM:The aims of this study were firstly to compare the area of canal occupied by gutta-percha, sealer or voids using the System B heating device with that obtained by a modified vertical condensation technique using the Touch 'n Heat: and secondly to compare the temperature changes at the root canal wall and external root surface during obturation with the above techniques. METHODOLOGY:Forty-five resin blocks, each with a standardized, simulated, prepared main root canal and five lateral canals, were assigned to three equal experimental groups. The canals were obturated using either the System B technique at two different temperature settings, or vertical condensation with a Touch 'n Heat instrument as the heat source. A heat transfer model was used to simultaneously record internal and external root surface temperature elevations during obturation by the three techniques. Data were analysed using unpaired Student's t-test and Mann-Whitney U-test. RESULTS:Both obturation techniques produced root fillings consisting of over 90% gutta-percha at most levels, although the percentages of sealer and voids 2-3 mm from the working length following System B obturation were higher than those found following modified vertical condensation. Modified vertical condensation resulted in more gutta-percha in lateral canals. Obturation was accomplished more quickly using the System B, and temperature elevations produced during obturation with the System B were significantly less (P < 0.001) than with vertical condensation. An elevation of external root surface temperature by more than 10 degrees C occurred during vertical condensation. CONCLUSIONS:The results suggest that the System B may produce an acceptable obturation and that the use of a Touch 'n Heat source during vertical condensation may result in damage to the periodontium.

journal_name

Int Endod J

journal_title

International endodontic journal

authors

Silver GK,Love RM,Purton DG

doi

10.1046/j.1365-2591.1999.00215.x

keywords:

subject

Has Abstract

pub_date

1999-08-01 00:00:00

pages

287-95

issue

eissn

0143-2885

issn

1365-2591

journal_volume

pub_type

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Comparison of two vertical condensation obturation techniques: Touch 'n Heat modified and System B.