Department of Orthopedic Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29, Saemunan-ro, Jongno-gu, Seoul, 03181, Republic of Korea.
Clinic of Oral Medicine and Orofacial Pain, Institute of Oral Health Science, Ajou University School of Medicine, 164, Worldcup-ro, Yeongtong-gu, Suwon, Gyeonggi-do, 16499, Republic of Korea.
BMC Oral Health. 2022 Apr 21;22(1):136. doi: 10.1186/s12903-022-02172-8.
Masticatory ability is an essential factor for sustaining quality of life and social and systemic well-being, particularly in elderly. This study aimed to reveal the association between subjective masticatory difficulty and skeletal bone mineral density (BMD).
Data from the Korean National Health and Nutrition Examination Survey, which was conducted from 2008 to 2011 were analyzed. This study included 13,092 Koreans (5656 males, 7436 females) over 50 years of age. Masticatory difficulty was evaluated based on a self-reported questionnaire. Areal BMD of the total hip, femoral neck, and lumbar spine as well as lean body mass were determined using dual-energy X-ray absorptiometry. Data about the sociodemographic characteristics, physical activity, number of teeth present, sum of decayed, missing, and filled permanent teeth (DMFT) index and Community Periodontal Index (CPI) were collected. Multivariate logistic regression analysis was conducted to analyze associations between subjective masticatory difficulty and BMD, adjusting for the confounding covariates.
Significant differences were observed in the areal BMD of the total hip, femoral neck, and lumbar spine as well as lean body mass accordance with the presence of subjective masticatory difficulty in both males and females. The number of teeth, DMFT, and CPI score did not show significant differences based on the presence of self-reported satisfaction of chewing performance in both males and females. Results from multivariate logistic regression demonstrated that the subjective masticatory difficulty showed significant interactions with skeletal BMD and the associations between masticatory satisfaction and BMD of the total hip and femoral neck were more prominent in females compared to those in males.
The skeletal BMD, particularly areal BMD of the femoral neck was significantly associated with subjective masticatory difficulty in elderly, especially in elder females.
咀嚼能力是维持生活质量和社会及全身健康的重要因素，尤其在老年人中。本研究旨在揭示主观咀嚼困难与骨骼骨密度（BMD）之间的关系。
对 2008 年至 2011 年进行的韩国国家健康和营养检查调查的数据进行了分析。本研究包括 13092 名 50 岁以上的韩国人（5656 名男性，7436 名女性）。咀嚼困难的评估基于自我报告的问卷。使用双能 X 射线吸收法测定全髋、股骨颈和腰椎的面积骨密度以及瘦体重。收集了社会人口统计学特征、身体活动、现有牙齿数量、龋齿、缺失和填充的恒牙（DMFT）指数和社区牙周指数（CPI）的数据。进行多变量逻辑回归分析，以分析主观咀嚼困难与 BMD 之间的关联，同时调整混杂的协变量。
男性和女性中，主观咀嚼困难的存在与全髋、股骨颈和腰椎的面积 BMD 以及瘦体重存在显著差异。男性和女性中，牙齿数量、DMFT 和 CPI 评分均未根据自我报告的咀嚼性能满意度存在显著差异。多变量逻辑回归结果表明，主观咀嚼困难与骨骼 BMD 之间存在显著的交互作用，并且咀嚼满意度与全髋和股骨颈 BMD 之间的关系在女性中比男性更为显著。
骨骼 BMD，特别是股骨颈的面积 BMD 与老年人，特别是老年女性的主观咀嚼困难显著相关。
