A double-blinded, interventional, non-randomized control trial was conducted in the Aligarh Province (Uttar Pradesh, India) between 2017 and 2019. This study aimed to evaluate the role of vitamin D on masticatory muscle activity among completely edentulous patients and its effect on the retention of dentures as perceived by patients. The study was conducted in accordance with the Declaration of Helsinki, and the protocol was approved by the Ethics Committee of the Institute. JNMC, AMU, Aligarh, India [JNMC-AMU/ECL/22-2013-14]. The study protocol was developed, and all subjects gave their written informed consent for inclusion before they participated in the study.
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