Intracanal temperature rise evaluation during the usage of the System B: replication of intracanal anatomy

Aim To evaluate and determine intracanal temperature rises at 2 and 4 mm from the working length (WL) necessary to obtain proper replication of intracanal anatomy with gutta‐percha (GP) using the System B heat source during vertical condensation. Methodology A split‐tooth model was prepared and arti...

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Bibliographic Details
Published in:International endodontic journal 2005-04, Vol.38 (4), p.218-222
Main Authors: Villegas, J. C., Yoshioka, T., Kobayashi, Ch, Suda, H.
Format: Article
Language:English
Subjects:
Analysis of Variance
Body Temperature
canal fillings
Dental Pulp Cavity
Dentistry
Gutta-Percha
Hot Temperature
Humans
Incisor
replication
Root Canal Obturation - methods
temperature
thermoplasticized
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Summary:Aim To evaluate and determine intracanal temperature rises at 2 and 4 mm from the working length (WL) necessary to obtain proper replication of intracanal anatomy with gutta‐percha (GP) using the System B heat source during vertical condensation. Methodology A split‐tooth model was prepared and artificial shallow depressions were cut in the buccal canal wall 2 and 4 mm from the WL. At the same level on the palatal wall holes were drilled to adapt two thermocouples. The canal was filled using GP in a vertical condensation technique by placing the System B plugger at 2 and 4 mm from the WL in groups A and B, respectively. Two control groups in which no GP was used were carried out placing the plugger 2 and 4 mm from the WL (groups A.c and B.c, respectively) and activating the heat source. Recording of temperature rise was carried out during the filling procedure for groups A and B and during activation for control groups A.c and B.c; the highest temperatures were recorded. After each filling was completed, 3 min were allowed for the GP to cool and the model divided to reveal the filling. Images of the GP were taken with a CCD camera to evaluate the presence of replication of artificial round depressions. In control groups, the temperature was recorded for 20 s after a 3 s activation of the heat source. The rise in temperature was compared between the groups individually at each level (2 or 4 mm) and statistically analysed using one‐way anova and Fisher PLSD tests at 5% of significance level (P 
ISSN:0143-2885
1365-2591
DOI:10.1111/j.1365-2591.2005.00934.x