Biomechanical effect of length and diameter of a short implant used in splinted prosthesis at the posterior atrophic maxilla of aging patients: A finite element study

Main Article Content

Tortrakul Pornsuksawang
Samroeng Inglam
Nattapon Chantarapanich

Abstract

The aim of this study was to evaluate the influence of implant diameter, implant length, and cortical bone thickness on the biomechanical behavior of a splinted implant in the posterior atrophic maxilla of aging patients. Eight finite element models for the posterior maxilla bone block were simulated. Each model had two implants with zirconia splinted crowns and varying second pre-molar implant length, first molar implant diameter, and cortical bone thickness. Biomechanical behavior was observed after loading the models with maximum bite force of the elderly patients. The results show that serious biomechanical complications as a consequence of implant displacement and implant fracture were not likely to occur. Additionally, the models with a thicker cortical bone and a larger implant diameter expressed lower elastic strain within the bone. It can be inferred that cortical bone thickness and implant diameter are the dominant factors in improving the biomechanical performance of these implants. Clinicians must not neglect to consider that strain overloading which results from the bite force may lead to peri implant marginal bone loss. Increasing the implant diameter in patients with minimal cortical bone levels can maintain the peri implant marginal bone which is able to result in better long-term outcomes.

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Section
Engineering
Author Biographies

Tortrakul Pornsuksawang, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand

Tortrakul Pornsuksawang was born in Nakhon ratchasima province in 20 May 1990. He graduated his DDS degree at Chulalongkorn university, Bangkok, Thailand in 2015. After his graduation, he has been working in public hospital at Samut sakorn for 3 years.

Samroeng Inglam, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand

Samroeng Inglam was born in Suphanburi, Thailand, in 1968. He recieved a certificate in doctor of dental surgery (DDS) in 2001 and PhD in Oral Health science in 2009 from Thammasat University. He works as an associate professor at the faculty of Dentistry Thammasat University, Thailand. His research area interestes includes Biomedical Engineering, Biomechanics of Dental Implant and Digital Dentistry. He has published various journals, proceedings and poster presentations. Samroeng Inglam is a member of the Royal College of Dental Surgeons of Thailand and the Dental Association of Thailand.

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