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Updated: Sep 16, 2025

Intravital Longitudinal Imaging of Vascular Dynamics in the Calvarial Bone Marrow

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Published on: April 11, 2025

Thread design optimization of a dental implant using explicit dynamics finite element analysis.

Qi Zhong^1,2,3,4, Zidi Zhai^1,2,3,4, Zi'ang Wu^1,2,3,4

¹Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China.

Scientific Reports

|July 4, 2025

Summary

Optimizing dental implant thread design reduces stress on surrounding bone. This enhanced design promotes better bone growth and implant stability, leading to improved osseointegration and clinical outcomes.

Keywords:

Alveolar bone Dental implant Explicit dynamics finite element analysis Stress distribution Thread design

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Last Updated: Sep 16, 2025

Intravital Longitudinal Imaging of Vascular Dynamics in the Calvarial Bone Marrow

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Published on: April 11, 2025

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth

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Published on: April 8, 2020

Dynamic Navigation for Dental Implant Placement

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Published on: September 13, 2022

Area of Science:

Biomaterials Engineering
Dental Implantology
Biomechanics

Background:

Optimizing dental implant thread design is crucial for stress distribution in peri-implant bone.
Current commercial implant designs may not provide ideal stress shielding or load transfer.
Understanding the relationship between thread geometry and bone response is essential for improving implant success.

Purpose of the Study:

To optimize the thread design of a commercial dental implant for ideal stress distribution in peri-implant bone.
To evaluate the effect of optimized thread designs on osseointegration in a rabbit tibia model.

Main Methods:

Finite element analysis (FEA) using explicit dynamics (EDFEA) to calculate dynamic von Mises stress (σvM) in peri-implant bone.
Orthogonal experimental design to determine optimal thread parameters (pitch, depth, tip width, coronal/apical surface angle).
In vivo study in rabbits implanting optimized and original designs, measuring implant stability quotient (ISQ), bone-to-implant contact (BIC), and bone volume fraction (BV/TV).

Main Results:

Optimized thread designs (OPT-max and OPT-man) were determined for maxillary and mandibular posterior regions, respectively.
Optimized implants showed significantly improved ISQ values at 4 weeks post-implantation (p < 0.05).
Significant increases in BIC and BV/TV-500 were observed around the OPT-man implant, and BV/TV-500 and BV/TV-1000 around the OPT-max implant compared to the original design (p < 0.05).

Conclusions:

Dental implant thread design significantly influences stress distribution in peri-implant bone during and immediately after implantation.
The optimized thread designs based on EDFEA promote osteogenesis and enhance osseointegration.
This study provides a basis for developing next-generation dental implants with improved biomechanical properties and clinical performance.