Comparison of the Phonetic Method for Detecting the Vertical Dimension of Occlusion in Complete Denture Construction with Physiological Rest Method and Height of Occlusion Rim at Tertiary Care Hospital, Lahore
DOI:
https://doi.org/10.70749/ijbr.v3i7.2865Keywords:
Complete Denture, Edentulous, Inter-Arch Distance, Occlusion Rim, Pearson’s Correlation, Phonetic Method, Physiological Rest Position, Prosthodontics, Vertical Dimension.Abstract
Background: Accurate determination of inter-arch distance is essential in complete denture construction to achieve optimal function, comfort, and aesthetics. Among the available methods, phonetic assessment, physiological rest position, and height of occlusion rim measurement are widely used, yet their correlation remains a subject of clinical interest. Objectives: To determine the correlation of mean inter-arch distance obtained by the phonetic method with the physiological rest method and height of occlusion rim measurement in complete denture construction. Study Design & Setting: A comparative cross-sectional study was conducted at the Prosthodontics Department, 28 Military Dental Centre, Lahore from 15 Jan 2025 to 15 May 2025. Methodology: Sixty edentulous patients aged 40–60 years with Angle’s Class I maxillomandibular relation were included. Inter-arch distances were recorded using the three methods. Effect modifiers (age, gender, smoking, and tobacco chewing) were controlled through stratification. Pearson’s correlation was applied for associations, and ANOVA was used for group comparisons, with p < 0.05 considered significant. Results: The mean age was 50.2 ± 5.8 years; 53.3% were male. Mean inter-arch distances were 18.45 ± 1.20 mm (phonetic), 18.32 ± 1.15 mm (physiological rest), and 18.50 ± 1.10 mm (occlusion rim). Strong correlations were found between phonetic and occlusion rim methods (r = 0.835, p < 0.001) and moderate correlations between phonetic and physiological rest methods (r = 0.552, p < 0.001). ANOVA revealed no significant differences between methods (p = 0.931). Stratified analyses showed consistent correlations across all subgroups. Conclusion: The phonetic method demonstrated strong agreement with the height of occlusion rim method and moderate agreement with the physiological rest method, supporting its reliability in clinical practice.
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