Effect of Ionizing Radiation on the Mechanical Properties of Two Dental Materials Commonly Used in Primary Teeth

Basma M Nagi; Dalia I El-Korashy; Amin El-S Amin; Amr M Abdelaziz; Reham K Elghazawy

doi:10.5005/jp-journals-10005-2690

Effect of Ionizing Radiation on the Mechanical Properties of Two Dental Materials Commonly Used in Primary Teeth

Int J Clin Pediatr Dent. 2023 Sep-Oct;16(5):758-762. doi: 10.5005/jp-journals-10005-2690.

Authors

Basma M Nagi¹, Dalia I El-Korashy², Amin El-S Amin³, Amr M Abdelaziz¹, Reham K Elghazawy¹

Affiliations

¹ Department of Pediatric Dentistry and Dental Public Health, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
² Department of Biomaterials, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
³ Department of Radiation Oncology and Nuclear Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt.

Abstract

Aim: The purpose of this in vitro study was to evaluate the effect of radiotherapy on flexural strength, microhardness, and surface roughness of bulk fill composite (X-tra fil) and glass ionomer (EQUIA Forte HT).

Materials and methods: A total of 40 specimens were prepared for each test and were divided into two groups according to the material used (composite or glass ionomer cement), and each group was divided into two subgroups (n = 10) according to radiation condition, irradiated subgroup, subjected to 50 Gy by multienergy linear accelerator delivered in one shot and control subgroup.

Results: Control samples of flexural strength and microhardness had a significantly higher value than irradiated samples in both materials. Regarding the surface roughness, irradiated samples had a significantly higher value than the control samples in both materials.

Conclusion: Irradiation with a linear accelerator had a negative impact on the flexural strength and microhardness of both materials. Moreover, it increased the surface roughness for both materials. Bulk fill composite is the dental restorative material of choice in head and neck cancer patients undergoing radiotherapy due to its high mechanical properties before and after radiation.

How to cite this article: Nagi BM, El-Korashy DI, Amin A El-S, et al. Effect of Ionizing Radiation on the Mechanical Properties of Two Dental Materials Commonly Used in Primary Teeth. Int J Clin Pediatr Dent 2023;16(5):758-762.

Keywords: Bulk fill composite; Glass ionomer; Ionizing radiation; Radiotherapy.