Effect of Cumulative Ionizing Radiation on Flexural Strength, Flexural Modulus, and Elasticity Modulus of Dentin in Unerupted Human Third Molars

Al-Haj Husain, Nadin; Al-Haj Husain, Adib; Grgic, Ivo; Kipar, Anja; Molinero-Mourelle, Pedro; Stadlinger, Bernd; Özcan, Mutlu

doi:10.5167/uzh-227139

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Al-Haj Husain, N., Al-Haj Husain, A., Grgic, I., Kipar, A., Molinero-Mourelle, P., Stadlinger, B., & Özcan, M. (2023). Effect of Cumulative Ionizing Radiation on Flexural Strength, Flexural Modulus, and Elasticity Modulus of Dentin in Unerupted Human Third Molars. Advances in Radiation Oncology, 8, 101127. https://doi.org/10.1016/j.adro.2022.101127

Abstract

Purpose: This in vitro study aimed to investigate the changes in mechanical properties in dentin of third molars after radiation therapy using variable doses and frequencies. Methods and Materials: Rectangular cross sectioned dentin hemisections (N = 60, n = 15 per group; >7 × 4 × 1.2 mm) were prepared using extracted third molars. After cleansing and storage in artificial saliva, random distribution was performed to 2 irradiation settings, namely AB or CD (A, 30 single doses of irradiation [2 Gy each] for 6 weeks; B, control group of