Aaron Yu-Jen Wu1, Jui-Ting Hsu, Heng-Li Huang. 1. *Assistant Professor and Director, Department of Dentistry, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan. †Associate Professor, Biomechanics Res. Lab, School of Dentistry, China Medical University, Taichung, Taiwan. ‡Professor, Biomechanics Res. Lab, School of Dentistry, China Medical University, Taichung, Taiwan.
Abstract
BACKGROUND: The study compared the implant mobility and surrounding bone strain between the titanium-zirconium (Ti-Zr) alloy and the commercial pure (CP) Ti implants. METHODS: The mobility--quantified as the implant stability quotient (ISQ) and Periotest value (PTV)--of implants constructed from Ti-Zr alloy and CP Ti placed into artificial type-2 jawbone models were measured. Specimens were tested by applying 190 N vertically or at 30 degrees laterally. Peak values of the principal strains of bone were recorded by rosette strain gauges with a data acquisition system and were analyzed statistically using Wilcoxon rank-sum test. RESULTS: PTV and ISQ values did not differ significantly between the Ti-Zr and CP Ti implants (P > 0.01). Under vertical loading, the peak bone strains did not differ significantly between the Ti-Zr and CP Ti specimens (P > 0.006). However, the peak strains were 52% lower around the Ti-Zr implant than around the Ti implant on the buccal side of bone under lateral loading (P < 0.001). CONCLUSIONS: The implant material (Ti-Zr alloy vs CP Ti) had no effect on the mobility of small-diameter dental implants. However, using Ti-Zr alloy as an implant material decreased the periimplant bone strain under lateral loading in this pilot study.
BACKGROUND: The study compared the implant mobility and surrounding bone strain between the titanium-zirconium (Ti-Zr) alloy and the commercial pure (CP) Ti implants. METHODS: The mobility--quantified as the implant stability quotient (ISQ) and Periotest value (PTV)--of implants constructed from Ti-Zr alloy and CP Ti placed into artificial type-2 jawbone models were measured. Specimens were tested by applying 190 N vertically or at 30 degrees laterally. Peak values of the principal strains of bone were recorded by rosette strain gauges with a data acquisition system and were analyzed statistically using Wilcoxon rank-sum test. RESULTS: PTV and ISQ values did not differ significantly between the Ti-Zr and CP Ti implants (P > 0.01). Under vertical loading, the peak bone strains did not differ significantly between the Ti-Zr and CP Ti specimens (P > 0.006). However, the peak strains were 52% lower around the Ti-Zr implant than around the Ti implant on the buccal side of bone under lateral loading (P < 0.001). CONCLUSIONS: The implant material (Ti-Zr alloy vs CP Ti) had no effect on the mobility of small-diameter dental implants. However, using Ti-Zr alloy as an implant material decreased the periimplant bone strain under lateral loading in this pilot study.
Authors: Junqing Yang; Mei Zheng; Qiuju Liu; Meiling Zhu Chushan Yang; Yan Zhang; Zhiqiang Zhu Journal: Int J Environ Res Public Health Date: 2017-09-26 Impact factor: 3.390