Effect of Dentin Bonding Agent on Intrapulpal Temperature during Fabrication of Provisional Restorations by a Direct Method: An In Vitro Study
Year: 2019
Type: article
Abstract: Aim: To determine the effect of three different provisional restorative materials (PRMs) and application of dentin bonding agent (DBA) on intrapulpal temperature rise during fabrication of provisional crowns using a direct method.Materials and methods: Three PRMs-polymethyl methacrylate resin (PMMA), bis-acrylic resin, and dimethyl methacrylate resin (DMMA)-were used in the study.Dentin bonding agent (Single Bond 2, 3M ESPE, Germany) was applied in a single layer or double layer as an insulating material.A total of 45 molars were prepared for complete coverage restoration with chamfer finish line and 1.5 mm axial and 2 mm occlusal reduction.After application of a single or double layer of DBA, provisional materials were polymerized according to the manufacturer's instructions.The temperature increase inside the pulp chamber was measured with a T-type thermocouple wire.The readings were averaged for each group to determine the mean value of temperature rise.Results: Statistical analysis was performed with analysis of variance (ANOVA) followed by post hoc Tukey test (a = 0.05).The temperature rise varied according to the provisional restoration material used (PMMA > DMMA > bis-acrylic resin) (p < 0.001) and the single or double layer of DBA (p < 0.001).Polymethyl methacrylate resin produced a higher intrapulpal temperature.Conclusion: Application of a double layer of DBA resulted in a significantly lower intrapulpal temperature.
Authors: Chetan Sharma, Priyanka Gubrellay, Milap Karia, Kunal Talesara, Shubhra Raghav, Paranna Sujatha
Institution: Bharati Vidyapeeth (Deemed to be University)
Language: English
Subfield: General Dentistry
Field: Dentistry
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W2998345554