Intraoral strain gauge measurements on complete dentures: a methodological study

Area of Science:

• Biomedical Engineering
• Prosthodontics
• Clinical Research Methodology

Background:

• Strain gauge technology offers a method for measuring biomechanical forces in vivo.
• Clinical prosthodontic research requires reliable methods for long-term functional analysis.
• Understanding strain distribution in prosthetic devices is crucial for patient outcomes.

Purpose of the Study:

• To evaluate the advantages and limitations of strain gauge use in clinical prosthodontic research.
• To demonstrate the feasibility of long-term clinical studies using strain gauges.
• To assess the stability of functional strain and prosthetic integrity over time.

Main Methods:

• A methodological study involving 19 patients with various prosthetic configurations (complete dentures, osseointegrated bridges).
• Strain gauge measurements were taken during maximum biting on two occasions, 12 months apart.
• Analysis of strain patterns, prosthetic stability, and strain gauge performance.

Main Results:

• Functional strain direction remained stable at specific points on dentures during maximum biting.
• No significant changes were observed in experimental dentures or supporting tissues after 12 months.
• Strain gauges maintained accuracy, with occasional, identifiable insulation failures.

Conclusions:

• Strain gauge technology is a viable tool for long-term clinical prosthodontic research.
• Prosthetic devices and supporting tissues exhibit stability over a 12-month period under functional loading.
• Strain gauge methodology provides reliable data for assessing biomechanical behavior in prosthodontics.