A three-dimensional analysis method for edentulous mandibular ridge shape.

Area of Science:

• Dental prosthetics
• Biomedical engineering
• Oral anatomy

Background:

• Edentulous ridge analysis is crucial for denture success.
• Accurate 3D assessment of bone resorption is challenging.
• Existing methods may lack precision for complex ridge shapes.

Purpose of the Study:

• To develop and validate a novel three-dimensional (3D) method for analyzing edentulous ridge shapes.
• To quantify residual ridge morphology using geometric analysis.
• To assess the applicability of the method across varying degrees of bone resorption.

Main Methods:

• Utilized a laser projection system to capture 3D data from edentulous plaster models.
• Subdivided the residual ridge contour into triangular elements.
• Calculated the angle between the normal line of each triangle and the occlusal plane for quantitative analysis.

Main Results:

• The developed 3D method successfully analyzed edentulous ridge shapes.
• Quantitative angular measurements provided insights into ridge morphology.
• The technique demonstrated utility across diverse ridge shapes and resorption levels.

Conclusions:

• The novel 3D laser projection method offers a precise tool for edentulous ridge analysis.
• This approach is valuable for understanding bone resorption patterns.
• The method shows promise for improving prosthetic treatment planning in edentulous patients.