Comparative Analysis of Dental Implant Designs Based on the Bone-Implant Contact Surface Area

Document Type

Conference Proceeding

Publication Date

Summer 7-2026

Abstract

This study has evaluated the mechanical behavior of four dental implant designs under vertical loading, in terms of surface area between implant and bone, stress distribution, and displacement. All implants had the same dimensions of 4.3 mm diameter and a length 9 mm, however the designs varied in thread pattern and the presence or absence of an oval cut. The designs included are oval cut with continuous threads, oval cut with spiral cut in threads, no oval cut with continuous threads, and no oval cut with spiral cut in threads. Developed models were assessed using finite element analysis in ANSYS. A 400 N vertical force was applied to simulate masticatory load. The bone-implant contact surface area was highest in the oval-cut designs, with Design A reaching 132.71 mm2. Design D, lacking the oval cut and using spiral threads, showed the highest von Mises stress of 318.41 MPa and greatest displacement of 0.0192 mm. On the other hand, Design A had the lowest displacement of 0.0118 mm and maintained moderate stress levels of 182.9 MPa. The findings indicate that the oval cut increases surface area and enhances mechanical stability, while continuous threads distribute stress more effectively than spiral threads. Among the designs, the oval cut with continuous threads offered the most balanced performance. These results suggest that simple geometric modifications can significantly improve implant behavior, supporting better load management and long-term success. FEA-guided prototyping paired with 3D printing cuts waste, accelerates iteration, and enables patient-specific implants, directly advancing SDM’s sustainable manufacturing goals.

Link to Full Text

Share

COinS