International Journal of Clinical Medicine, 2021, 12, 145-164 https://www.scirp.org/journal/ijcm ISSN Online: 2158-2882 ISSN Print: 2158-284X DOI: 10.4236/ijcm.2021.124015 Apr. 21, 2021 145 International Journal of Clinical Medicine Racial Differences Effects on Oral Health and Periodontal Diseases Extent, Staging and Grading among the Multi-Ethnic Expatriates in Aseer Region, Saudi Arabia Mohammed M. A. Abdullah Al-Abdaly 1* , Sultan Mansour A. Alqahtani 2 , Shaker Saleh M. Alosman 2 , Ghadah Ali Saad Alqahtani 2 1 Periodontics and Community Dental Sciences Department, College of Dentistry, King Khalid University, Abha, Saudi Arabia 2 College of Dentistry, King Khalid University, Abha, Saudi Arabia Abstract Background: Given the increase in the numbers of expatriates in Saudi Ara- bia and the shortage of information about expatriates’ oral health and peri- odontal disease severity and progression. Objectives: This study aimed to evaluate the effects of the racial differences on oral health and periodontal disease extent, staging, and grading among the multi-ethnic expatriates in the Aseer region, Saudi Arabia. Materials and Methods: This cross-sectional study was carried out on 300 expatriates in Aseer region, Saudi Arabia. They were divided into three equal racial different groups (n = 100), Arabs (AR), Asians (AS), and Africans (AF). The interviews of all participants were com- pleted then the clinical examinations of periodontal diseases extent, staging, and grading parameters were performed. Statistical analysis was done by ANOVA test, Tukey’s test, and Chi-square test. The statistical significance level was determined at p < 0.05. Results: There were statistically significant differences in the comparison between the three ethnic/racial groups in clini- cal parameters except in GBI, PCR, FI, TFO, and BC, where there were no statistically significant differences in the comparison between the three eth- nic/racial groups. There were differences associated with age, gender, smok- ing, and diabetes, without statistically significant differences among the three racial groups. Conclusion: We concluded that most participants in this study had a generalized severe grade 4 plaque-induced gingivitis and localized pe- riodontitis stage III grade B. Keywords Multi-Ethnics, Oral Health, Periodontal Diseases Extent, Staging and Grading How to cite this paper: Al-Abdaly, M.M.A.A., Alqahtani, S.M.A., Alosman, S.S.M. and Alqahtani, G.A.S. (2021) Racial Differences Effects on Oral Health and Periodontal Diseases Extent, Staging and Grading among the Multi-Ethnic Expa- triates in Aseer Region, Saudi Arabia. In- ternational Journal of Clinical Medicine, 12, 145-164. https://doi.org/10.4236/ijcm.2021.124015 Received: March 27, 2021 Accepted: April 18, 2021 Published: April 21, 2021 Copyright © 2021 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access