Stress Distribution Analysis of Threaded Implants for Digital Dentistry

Area of Science:

• Biomaterials Engineering
• Biomechanics
• Dental Implantology

Background:

• Dental implant stability is paramount for successful osseointegration and long-term function.
• Understanding the biomechanical interplay between dental implants and surrounding bone is essential for predicting clinical outcomes.
• Digital dental technologies offer advanced tools for pre-operative planning and analysis.

Purpose of the Study:

• To evaluate the stability of dental implants using structural analysis based on key design variables.
• To analyze stress distribution in the cortical bone, particularly in areas with critical nerve structures.
• To provide data-driven insights for optimizing digital dental implant design and surgical planning.

Main Methods:

• Structural analysis was performed using digital dental implant design variables.
• Variables included implant length and thickness, cortical bone thickness, and cancellous bone elastic modulus.
• Stress analysis was conducted on the external cortical bone, considering nerve proximity.

Main Results:

• Decreasing implant length generally increased stress, except at 10 mm where stress dispersion occurred.
• Increased implant thickness led to decreased stress.
• Reduced cancellous bone elastic modulus decreased stress on cancellous bone but increased stress on cortical bone.
• Increased cortical bone thickness reduced stress under vertical load but increased stress under oblique load.

Conclusions:

• Dental implant design variables significantly influence stress distribution and stability.
• Optimizing implant length, thickness, and considering bone characteristics are crucial for minimizing stress on critical structures.
• Integrating structural analysis with digital radiography data can enhance the precision of dental implantation planning.