fa طب سالمندان Geriatrics پژوهشي Original Article <div style="text-align: justify;"><strong>Background and purpose: </strong>Type 2 diabetes mellitus (T2DM) is the most common form of diabetes, and a metabolic disorder affecting patients&#39; general health in various ways. The present study aimed to evaluate the oral health-related quality of life (OHRQoL) among older adults of Amirkola, Northern Iran.<br> <strong>Materials and Methods: </strong>A case-control study was conducted with a sample of 500 elderly people (250 with T2DM and 250 healthy controls) who answered geriatric oral health assessment index (GOHAI) questionnaire and a questionnaire evaluating xerostomia. Then, all participants underwent clinical dental examinations. The obtained data were then analyzed by t-test, chi-square test, and Pearson&#39;s correlation coefficient, and p < 0.05 was considered significant.<br> <strong>Results: </strong>The prevalence of xerostomia was not statistically significant between the T2DM patients and control groups (p < 0.079). Greater number of patients suffering T2DM reported xerostomia according to the records; however, the correlation between this disorder and periodontal disease index (PDI), Plaque index (PI), oral health index-simplified (OHI-S), and geriatric oral health assessment index (GOHAI) in the subjects of the two study groups was not significant (p < 0.0001).<br> <strong>Conclusion: </strong>In the present study, there was no significant relationship between GOHAI and periodontal indices, demonstrating no difference in the OHRQoL of elderly patients with T2DM and older healthy adults.</div> Quality of Life, Diabetes Mellitus, Oral Health, Oral Health-Related Quality of Life 10 20 http://jhs.mazums.ac.ir/browse.php?a_code=A-10-773-2&slc_lang=fa&sid=1 Fateme Pakize 10031947532846007165 10031947532846007165 No Babol University of Medical Sciences, Babol,.Iran Mahsa Mehryari 10031947532846007166 10031947532846007166 No Babol University of Medical Sciences, Babol, Iran Mohammad Hajimirzamohammad 10031947532846007167 10031947532846007167 No Babol University of Medical Sciences, Babol, Iran Ali Bijani 10031947532846007168 10031947532846007168 No Babol University of Medical Sciences, Babol, Iran Seyed Reza Hosseini 10031947532846007169 10031947532846007169 No Babol University of Medical Sciences, Babol, Iran Mina Motalebnejad 10031947532846007170 10031947532846007170 No Babol University of Medical Sciences, Babol, Iran Niloofar Jenabian 10031947532846007171 10031947532846007171 No Babol University of Medical Sciences, Babol, Iran Elham Mahmoodi 10031947532846007172 10031947532846007172 No Babol University of Medical Sciences, Babol, Iran Zahra Sadat Madani 10031947532846007173 10031947532846007173 No Babol University of Medical Sciences, Babol, Iran Fateme Sayadi 10031947532846007174 10031947532846007174 No Babol University of Medical Sciences, Babol, Iran MohammadMehdi Naghibi Sistani 10031947532846007175 10031947532846007175 No Babol University of Medical Sciences, Babol, Iran Reza Ghadimi 10031947532846007176 10031947532846007176 No Babol University of Medical Sciences, Babol, Iran Atena Shirzad 10031947532846007177 10031947532846007177 No Babol University of Medical Sciences, Babol, Iran Fateme Baladi 10031947532846007178 10031947532846007178 No Babol University of Medical Sciences, Babol, Iran Negin Soghli 10031947532846007179 10031947532846007179 No Babol University of Medical Sciences, Babol, Iran Amir Kiakojori 10031947532846007180 10031947532846007180 Yes Babol University of Medical Sciences, Babol, Iran