Original Research Article
Year: 2019 | Month: December | Volume: 6 | Issue: 12 | Pages: 85-92
Effect of Cooling Techniques on Pulpal Temperature on Direct Fabrication of Provisional Restorations: An In Vitro Study
Manju Choudhary1, Vijaypal Singh2
1MDS, Prosthodontics, Director, Apex Dental Hospital & Implant Centre, Sikar (Rajasthan)
2MS, General Surgeon, S.K Hospital, Sikar (Rajasthan)
Corresponding Author: Vijaypal Singh
ABSTRACT
Provisional restorations are required before definitive restorations are inserted to protect prepared teeth, reduce dentinal sensitivity, prevent tooth migration with occlusal changes, and to restore function. The purpose of this invitro study was to compare the effectiveness of different cooling techniques in minimizing heat transfer to the pulp during direct fabrication of provisional restorations.
Objective: To compare the relative efficacy of different cooling techniques which can be used during direct fabrication of provisional restorations. To compare the temperature rise in the pulp with two different provisional restorative materials.
Method: This laboratory based study was conducted to evaluate: a) The relative efficacy of different cooling technique which can be used during direct fabrication of provisional restorations. b) “Cooled” polyvinyl siloxane putty index and irreversible hydrocolloid (alginate) index can act as a heat sink for heat of polymerization of provisional resin.c) The intrapulpal temperature variations using two different provisional restorative materials. Three types of matrices were used in the study: a. Vacuum formed template b. PVS putty index c. Irreversible hydrocolloid impression index. A total of 160 provisional restorations were fabricated using 3 matrices and 2 provisional restorative materials. Intrapulpal temperature variations were recorded, tabulated and statistically analysed.
Results: Analysis of variance (ANOVA) technique was used for multiple group comparison followed by Scheffe’s Test for pairwise comparison. Intrapulpal temperature variations were recorded, tabulated and statistically analysed.
Conclusion: The temperature rise caused by each matrix decreased in the following order. Vacuum form template >PVS putty index > irreversible hydrocolloid impression index.
Key words: cooling techniques, provisional restorations, Direct Restoration, Indirect Restoration, Vacuum formed template, thermocouple
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