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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Temperature Changes in Gutta-Percha and Resilon Cones Induced by a Thermomechanical Compaction Technique

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Author(s):
Sant'Anna-Junior, Arnaldo [1] ; Tanomaru-Filho, Mario [1] ; Hungaro Duarte, Marco Antonio [2] ; Santos Nunes Reis, Jose Mauricio [3] ; Guerreiro-Tanomaru, Juliane Maria [1]
Total Authors: 5
Affiliation:
[1] UNESP, Araraquara Dent Sch, Dept Restorat Dent, Araraquara, SP - Brazil
[2] Sagrado Coracao Univ, Bauru Dent Sch, Dept Dent, USC, Bauru, SP - Brazil
[3] UNESP, Araraquara Dent Sch, Dept Prosthesis, Araraquara, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF ENDODONTICS; v. 35, n. 6, p. 879-882, JUN 2009.
Web of Science Citations: 11
Abstract

Introduction: The aim of this study was to assess temperature changes in conventional gutta-percha, thermoplastic gutta-percha, and Resilon cones by using thermomechanical compaction technique. Methods: The root canals of extracted human teeth were placed in resin blocks and sectioned. After root canal preparation, cavities perforating the lingual wall were prepared at 4 and 8 mm from the apex, and K-type thermocouples coupled to a digital temperature meter were inserted until reaching the root canal. After placement of the main cone and accessory cones of each material assessed, a \#45 thermomechanical compactor was used at 10,000 rpm. Data were analyzed by using analysis of variance and Tukey test for paired comparisons (P < .05). Results: A significant difference was observed between initial and maximum temperatures (mean increase, 5 degrees C-8 degrees C) with all materials (P < .05). The 3 materials showed similar temperature changes (P > .05). Changes in the apical third were higher when compared with the cervical third (P < .05). Conclusions: Our results suggest that gutta-percha and Resilon present similar temperature changes during thermomechanical compaction. (J Endod 2009;35:879-882) (AU)

FAPESP's process: 07/00424-4 - Thermoplastification evaluation of different gutta-percha, Resilon and Microseal and TC Systems, and of the lateral root canal filling capacity using thermoplastic obturation technique
Grantee:Mario Tanomaru Filho
Support Opportunities: Regular Research Grants