210 - Thermal Properties of Cements for Pre-fabricated Pediatric Zirconia Crowns

Friday, May 26, 2023

12:40 PM – 12:55 PM

Location: Exhibit Hall

Has Audio

Presenting Author(s)

Amy B. Kerns, DDS

Pediatric Resident
University of Tennessee Health Science Center, Memphis, TN
University of Tennessee
Memphis, Tennessee, United States

Co-Author(s)

BM

Brian Morrow, MS

University of Tennessee Health Science Center
AS

Audrey Selecman, DDS, MDS

University of Tennessee Health Science Center
MW

Martha H. Wells, DDS, MS

St. Jude Children's Research Hospital
FG

Franklin Garcia-Godoy, DDS, MS, PhD, PhD

University of Tennessee Health Science Center

Program Director(s)

Craig V. Vinall, DDS, MDS

Program Director
University of Tennessee Health Science Center (UTHSC)
Memphis, Tennessee, United States

Purpose: The aim of this in vitro study was to evaluate thermal properties of five materials commonly used for cementation of pre-fabricated zirconia crowns using infrared thermography.

Methods: Cements (BioCem Universal, Ceramir Crown & Bridge, FujiCem 2, Ketac Cem, and RelyX Luting Plus) were measured with FLIR E75 thermal camera for temperature change during cure. Two cements - BioCem and RelyX - were light-cured according to the manufacturer’s instructions.

Results: Data are statistically analyzed using Kruskal-Wallis One-Way ANOVA on Ranks with Tukey post hoc test for multiple comparison (p < 0.05). Statistical differences (p < 0.05) existed between RelyX, Ketac Cem, and Ceramir when compared to BioCem. Statistical differences also existed between Ketac Cem and Ceramir when compared to FujiCem. No significant difference was found in exotherm for RelyX, Ketac, and Ceramir. RelyX, FujiCem, and BioCem produced clinically relevant temperature changes during cure, while all other cements presented with non-significant temperature change, with Ceramir and Ketac Cem producing the smallest change in temperature during cure overall.

Conclusion: Clinically significant temperature rise is noted during cure for BioCem. Additional studies are warranted for this cement to investigate intrapulpal temperature rise and possible damage to pulpal tissue.