The Impact of Occlusal Support Patterns in Right-Handed Denture Wearers on Oral Function and Oral Health-Related Quality of Life

IF 4 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of oral rehabilitation Pub Date : 2025-06-23 DOI:10.1111/joor.70010

Yutaro Takahashi, Mineka Yoshikawa, Mitsuyoshi Yoshida, Maho Takeuchi, Miyuki Yokoi, Azusa Haruta, Shion Maruyama, Kazuhiro Tsuga

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Abstract

Background

Denture treatment for unilateral distal extension defects can cause organic and functional asymmetry in the oral cavity, which may be influenced by physical laterality and the preferred chewing side (PCS). However, existing classification systems for dental defects overlook left–right defect distribution, and individual laterality is rarely considered in treatment planning.

Objective

This study investigated the relationship between dental defect location and laterality.

Methods

This was a cross-sectional study of 176 right-handed elderly participants divided into five groups by denture type: control (n = 87), right distal extension (n = 9), left distal extension (n = 13), bilateral distal extension (n = 43), and complete denture (n = 24). Primary outcomes included masticatory efficiency, bite force, oral health-related quality of life (OHRQoL), and PCS assessed through interviews.

Results

The right distal extension group demonstrated significantly reduced masticatory efficiency, bite force and OHRQoL compared to the control group, indicating diminished oral function and quality of life. The left distal extension group showed significant left–right differences in function, with reduced performance on the distal extension defect side. The right side was the PCS in all groups, with no significant differences in distribution observed between the control and denture groups.

Conclusion

In elderly individuals with unilateral distal extension dentures, right-handed individuals demonstrate different masticatory functions based on whether the defect is on the right or left side. Additionally, when occlusal support is bilaterally maintained through prosthodontic treatment, including dentures, the impact of structural asymmetry on the PCS is limited.

Abstract Image

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右手义齿佩戴者咬合支持方式对口腔功能和口腔健康相关生活质量的影响。

背景：义齿治疗单侧远端延伸缺损可引起口腔器官和功能的不对称，这可能受到物理侧度和首选咀嚼侧（PCS）的影响。然而，现有的牙缺损分类系统忽略了左右牙缺损分布，在治疗计划中很少考虑个体侧侧性。目的：探讨牙体缺损位置与侧位的关系。方法：对176名右利手老年人进行横断面研究，按义齿类型分为5组：对照组（n = 87）、右侧远端延伸组（n = 9）、左侧远端延伸组（n = 13）、双侧远端延伸组（n = 43）和全口义齿组（n = 24）。主要结局包括咀嚼效率、咬合力、口腔健康相关生活质量（OHRQoL）和通过访谈评估的PCS。结果：与对照组相比，右远端伸展组咀嚼效率、咬合力和OHRQoL明显降低，口腔功能和生活质量下降。左侧远端伸展组在功能上表现出显著的左右差异，远端伸展缺损侧表现下降。右侧为各组的PCS，对照组和义齿组在分布上无明显差异。结论：在老年单侧远端义齿患者中，右撇子的咀嚼功能根据缺损部位是在右侧还是左侧表现不同。此外，当通过修复治疗（包括假牙）维持双侧咬合支持时，结构不对称对PCS的影响是有限的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of oral rehabilitation 医学-牙科与口腔外科

CiteScore

5.60

自引率

10.30%

发文量

116

审稿时长

4-8 weeks

期刊介绍： Journal of Oral Rehabilitation aims to be the most prestigious journal of dental research within all aspects of oral rehabilitation and applied oral physiology. It covers all diagnostic and clinical management aspects necessary to re-establish a subjective and objective harmonious oral function. Oral rehabilitation may become necessary as a result of developmental or acquired disturbances in the orofacial region, orofacial traumas, or a variety of dental and oral diseases (primarily dental caries and periodontal diseases) and orofacial pain conditions. As such, oral rehabilitation in the twenty-first century is a matter of skilful diagnosis and minimal, appropriate intervention, the nature of which is intimately linked to a profound knowledge of oral physiology, oral biology, and dental and oral pathology. The scientific content of the journal therefore strives to reflect the best of evidence-based clinical dentistry. Modern clinical management should be based on solid scientific evidence gathered about diagnostic procedures and the properties and efficacy of the chosen intervention (e.g. material science, biological, toxicological, pharmacological or psychological aspects). The content of the journal also reflects documentation of the possible side-effects of rehabilitation, and includes prognostic perspectives of the treatment modalities chosen.