Effect of Radiotherapy on Microhardness and Surface Morphology of Pretreated Primary Teeth with Silver Diamine Fluoride: An In vitro Study

Abstract

Background: Radiation therapy has proven to be an effective modality in treating children suffering from cancer. High prevalence of dental caries is seen in children undergoing radiation therapy. This is primarily due to the direct effects of these harmful radiation on the enamel and not as a consequence to the reduced salivary flow. Mechanical properties of the enamel have been seen to be affected by radiation according to various studies conducted. Objectives: The objective of this study is to evaluate whether radiotherapy causes changes in the microhardness and surface morphology of enamel in primary teeth pretreated with silver diamine fluoride. Methodology: 22 primary teeth samples will be divided into two groups, 11 samples each-study group which will be pretreated with silver diamine fluoride (SDF) and control group. Both groups will be subjected to radiotherapy of 10 Gy radiation for a duration of 6 days. The samples will be tested for Vickers microhardness test and SEM analysis for surface morphological changes post radiotherapy. Statistical analysis will be done using “chi square test, paired and unpaired student t -test”. Surface microhardness and morphological changes of the study and control group compared. Expected Results: It is expected that SDF application will be effective modality in prevention of caries due to frequent radiation exposure in children suffering from cancer and undergoing radiotherapy. Conclusion: The study will conclude that SDF will cause a reduction in the microhardness of the surface and lesser morphological changes in the enamel of the primary teeth post radiation therapy in children suffering from cancer.