Research Article Effect of Beverage Consumption Frequency on DMFT Index among Iranian Adult Population: An AZAR Cohort Study Mahdi Hadilou , 1 Mohammad Hossein Somi , 2 Elnaz Faramarzi , 2 and Leila Nikniaz 3 1 Student Research Committee, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran 2 Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran 3 Tabriz Health Services Management Research Center, Faculty of Management and Medical Informatics, Tabriz University of Medical Sciences, Tabriz, Iran Correspondence should be addressed to Elnaz Faramarzi; elnazfaramarzi849@gmail.com and Leila Nikniaz; nikniazleila@gmail.com Received 31 October 2021; Revised 28 March 2022; Accepted 16 May 2022; Published 27 May 2022 Academic Editor: Sreekanth Kumar Mallineni Copyright © 2022 Mahdi Hadilou et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Background. Given the eﬀect of oral and dental condition on emotional and physical health and the diﬀerent eﬀects of beverage consumption on decayed, missing, and ﬁlled teeth (DMFT) as one of the indicators of oral health in diﬀerent populations, this study aimed to investigate the eﬀect of beverage consumption and its frequency on DMFT among Iranian adult population. Materials and Methods. e data of this cross-sectional study were obtained from AZAR (Azerbaijan) cohort, conducted on 15,006 adults aged 35 to 70 years old in Shabestar County, Iran. Demographic and nutritional data were collected by nutritionists through the “Food Frequency Questionnaire,” and DMFT index by general practitioners trained by a dentist according to the World Health Organization (WHO) guidelines. Beverages including milk, doogh, natural fruit juice, black tea, nonalcoholic beer, coﬀee, sugar-sweetened beverages, and artiﬁcial fruit juice were studied. Results. A total of 14,966 adults with the mean age of 49.64 ± 9.28 were enrolled. e participants’ mean DMFT value was 21.27 ± 8.95. Weekly consumption of tea and coﬀee beverages resulted in 13% (95% conﬁdence interval: 3% to 22%) lower DMFT compared to daily consumption (p  0.01). However, there was no association between DMFT and other beverages. Conclusion. e higher DMFT values with the daily consumption of tea and coﬀee beverages showed that a part of adults’ oral health is aﬀected by beverages; therefore, this should be considered by healthcare authorities in order to manage carries development in the communities. 1. Introduction Oral diseases impose extensive negative eﬀects on patients, their families, and the health care system. e ﬁnancial burden of neglected oral health on societies is vastly underestimated around the world [1]. It has been shown that oral diseases such as dental caries, tooth loss (edentulism), periapical and periodontal complications have a bidirec- tional relationship with diet alterations, systemic diseases, emotional discomfort, and aesthetic problems, which highlights the importance of achieving and maintaining appropriate oral hygiene [2–5]. Despite a decreasing trend in dental caries, they are still among the most prevalent diseases worldwide, and have involved most adult communities, including both low and high income [6]. To quantify dental health status, the Decayed, Missing, and Filled Teeth (DMFT) index has been introduced as a representative of oral health by Klein and Palmer in 1938. DMFT index is composed of the sum of decayed, missing, and ﬁlled teeth. Regardless of its limita- tions, it still is an acceptable epidemiological index in dentistry that represents the oral and dental health condition of any given society or individual. It also is identiﬁed as the “Caries Index” [7]. Hindawi International Journal of Dentistry Volume 2022, Article ID 9142651, 7 pages https://doi.org/10.1155/2022/9142651