Study on the prevalence situation of malocclusion and the influence on oral health-related quality of life and social psychology in adults of Kunming and Gongshan County, Yunnan Province
Abstract Introduction Malocclusion has a high prevalence and great harm. In Yunnan Province, China different in geographical environment, cultural practices, dietary habits, and uneven distribution of dental resources may lead to regional differences in malocclusion incidence and its effects on oral...
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BMC
2025-07-01
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| Series: | BMC Oral Health |
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| Online Access: | https://doi.org/10.1186/s12903-025-06361-z |
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| author | Xinyu Xing Canbang Peng Meiying Wu Yue Li Yumiao Chen Chengle Zhang Congchong Shi |
| author_facet | Xinyu Xing Canbang Peng Meiying Wu Yue Li Yumiao Chen Chengle Zhang Congchong Shi |
| author_sort | Xinyu Xing |
| collection | DOAJ |
| description | Abstract Introduction Malocclusion has a high prevalence and great harm. In Yunnan Province, China different in geographical environment, cultural practices, dietary habits, and uneven distribution of dental resources may lead to regional differences in malocclusion incidence and its effects on oral health-related quality of life and social psychology. Methods This study employed random sampling to recruit 367 adults (aged 18–35) from Kunming City and Gongshan County. Malocclusion was evaluated using Angle classification and the Dental Aesthetic Index (DAI). The modified WHO questionnaire, OHIP-14 scales, and PIDAQ scales were used to assess the impact of malocclusion on oral health-related quality of life and social psychology. Results (1) Class I malocclusion predominated in both regions, with Kunming showing significantly higher Class II prevalence (p < 0.05) while Gongshan had marginally more Class III cases. Within Gongshan’s ethnic groups, although Class I remained most common, the Lisu subjects exhibited higher proportions of both Class II and Class III malocclusions. (2) In Kunming, DAI scores significantly correlated with paternal education level. (3) Kunming subjects affirmed biting or chewing difficulties had higher DAI scores than those denied, while the opposite was observed among the Nu ethnic subjects in Gongshan. (4) Kunming subjects’ DAI scores showed a significant negative correlation with dental confidence in PIDAQ scale. However, in modified WHO questionnaire, Nu ethnic subjects who afraided smiling due to tooth appearance had significantly higher DAI scores than those who did not. Conclusion (1) The prevalence of malocclusion varies in different regions. (2) There are certain differences in the types of malocclusion among different nationalities in the same area (Gongshan). (3) In two regions, the severity of malocclusion could affect the oral health-related quality of life and social psychology. |
| format | Article |
| id | doaj-art-1969a616e79449ab975f4ef9f117e7bf |
| institution | Kabale University |
| issn | 1472-6831 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Oral Health |
| spelling | doaj-art-1969a616e79449ab975f4ef9f117e7bf2025-08-20T04:01:35ZengBMCBMC Oral Health1472-68312025-07-0125111010.1186/s12903-025-06361-zStudy on the prevalence situation of malocclusion and the influence on oral health-related quality of life and social psychology in adults of Kunming and Gongshan County, Yunnan ProvinceXinyu Xing0Canbang Peng1Meiying Wu2Yue Li3Yumiao Chen4Chengle Zhang5Congchong Shi6Department of Orthodontics, Affliated Stomatology Hospital of Kunming Medical UniversityOral and Maxillofacial Surgery, Affliated Stomatology Hospital of Kunming Medical UniversityDepartment of Orthodontics, Affliated Stomatology Hospital of Kunming Medical UniversityDepartment of Orthodontics, Affliated Stomatology Hospital of Kunming Medical UniversityDepartment of Orthodontics, Affliated Stomatology Hospital of Kunming Medical UniversityDepartment of Orthodontics, Affliated Stomatology Hospital of Kunming Medical UniversityDepartment of Orthodontics, Affliated Stomatology Hospital of Kunming Medical UniversityAbstract Introduction Malocclusion has a high prevalence and great harm. In Yunnan Province, China different in geographical environment, cultural practices, dietary habits, and uneven distribution of dental resources may lead to regional differences in malocclusion incidence and its effects on oral health-related quality of life and social psychology. Methods This study employed random sampling to recruit 367 adults (aged 18–35) from Kunming City and Gongshan County. Malocclusion was evaluated using Angle classification and the Dental Aesthetic Index (DAI). The modified WHO questionnaire, OHIP-14 scales, and PIDAQ scales were used to assess the impact of malocclusion on oral health-related quality of life and social psychology. Results (1) Class I malocclusion predominated in both regions, with Kunming showing significantly higher Class II prevalence (p < 0.05) while Gongshan had marginally more Class III cases. Within Gongshan’s ethnic groups, although Class I remained most common, the Lisu subjects exhibited higher proportions of both Class II and Class III malocclusions. (2) In Kunming, DAI scores significantly correlated with paternal education level. (3) Kunming subjects affirmed biting or chewing difficulties had higher DAI scores than those denied, while the opposite was observed among the Nu ethnic subjects in Gongshan. (4) Kunming subjects’ DAI scores showed a significant negative correlation with dental confidence in PIDAQ scale. However, in modified WHO questionnaire, Nu ethnic subjects who afraided smiling due to tooth appearance had significantly higher DAI scores than those who did not. Conclusion (1) The prevalence of malocclusion varies in different regions. (2) There are certain differences in the types of malocclusion among different nationalities in the same area (Gongshan). (3) In two regions, the severity of malocclusion could affect the oral health-related quality of life and social psychology.https://doi.org/10.1186/s12903-025-06361-zEthnic groupsMalocclusionOral health-related quality of lifeSocial psychology |
| spellingShingle | Xinyu Xing Canbang Peng Meiying Wu Yue Li Yumiao Chen Chengle Zhang Congchong Shi Study on the prevalence situation of malocclusion and the influence on oral health-related quality of life and social psychology in adults of Kunming and Gongshan County, Yunnan Province BMC Oral Health Ethnic groups Malocclusion Oral health-related quality of life Social psychology |
| title | Study on the prevalence situation of malocclusion and the influence on oral health-related quality of life and social psychology in adults of Kunming and Gongshan County, Yunnan Province |
| title_full | Study on the prevalence situation of malocclusion and the influence on oral health-related quality of life and social psychology in adults of Kunming and Gongshan County, Yunnan Province |
| title_fullStr | Study on the prevalence situation of malocclusion and the influence on oral health-related quality of life and social psychology in adults of Kunming and Gongshan County, Yunnan Province |
| title_full_unstemmed | Study on the prevalence situation of malocclusion and the influence on oral health-related quality of life and social psychology in adults of Kunming and Gongshan County, Yunnan Province |
| title_short | Study on the prevalence situation of malocclusion and the influence on oral health-related quality of life and social psychology in adults of Kunming and Gongshan County, Yunnan Province |
| title_sort | study on the prevalence situation of malocclusion and the influence on oral health related quality of life and social psychology in adults of kunming and gongshan county yunnan province |
| topic | Ethnic groups Malocclusion Oral health-related quality of life Social psychology |
| url | https://doi.org/10.1186/s12903-025-06361-z |
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