[Specifics of mastication with complete dentures].

Area of Science:

• Oral physiology
• Biomechanical engineering
• Dental prosthetics

Context:

• Mastication is a learned, reflexive process crucial for oral function.
• Complete tooth loss significantly alters oral cavity dynamics and sensory feedback.
• Complete dentures aim to restore masticatory function but present unique challenges.

Purpose:

• To investigate the biomechanical and physiological changes in mastication for complete denture wearers.
• To compare masticatory efficiency and muscle activity between denture wearers and individuals with natural teeth.
• To analyze the discrepancy between subjective satisfaction and objective functional outcomes in complete denture users.

Summary:

• Complete denture wearers exhibit decreased bite forces and altered masticatory muscle energy distribution, with chewing energy directed through the denture base rather than the bolus.
• Loss of periodontal receptors and occlusal surfaces impairs interocclusal perception and spatial memory, leading to disintegrated interocclusal space.
• Denture wearers require significantly more masticatory movements (approximately seven times) for effective food processing compared to individuals with natural teeth.
• Consequential stress on supporting tissues, mucosal inflammation, and alveolar bone resorption are common issues.
• Subjective satisfaction with dentures often does not correlate with objective functional assessments, with many users overestimating their denture's performance.

Impact:

• Highlights the functional limitations and physiological consequences of complete tooth loss and denture use.
• Provides insights into the biomechanical challenges affecting masticatory efficacy and patient satisfaction.
• Informs the development of improved denture designs and patient management strategies for enhanced oral rehabilitation.