Evaluation of mechanical strengths of three types of mini-implants in artificial bones

Yu Chuan Tseng, Ju Hui Wu, Chun Chan Ting, Hong Sen Chen, Chun Ming Chen

Research output: Contribution to journalArticle

Abstract

We investigates the effect of the anchor area on the mechanical strengths of infrazygomatic mini-implants. Thirty mini-implants were divided into three types based on the material and shape: Type A (titanium alloy, 2.0 × 12 mm), Type B (stainless steel, 2.0 × 12 mm), and Type C (titanium alloy, 2.0 × 11 mm).The mini-implants were inserted at 90° and 45° into the artificial bone to a depth of 7 mm, without predrilling. The mechanical strengths [insertion torque (IT), resonance frequency (RF), and removal torque (RT)] and the anchor area were measured. We hypothesized that no correlation exists among the mechanical forces of each brand. In the 90° tests, the IT, RF, and RT of Type C (8.5 N cm, 10.2 kHz, and 6.1 N cm, respectively) were significantly higher than those of Type A (5.0 N cm, 7.7 kHz, and 4.7 N cm, respectively). In the 45° test, the RFs of Type C (9.2 kHz) was significantly higher than those of Type A (7.0 kHz) and Type B (6.7 kHz). The anchor area of the mini-implants was in the order of Type C (706 mm2) > Type B (648 mm2) > Type A (621 mm2). Type C exhibited no significant correlation in intragroup comparisons, and the hypothesis was accepted. In the 90° and 45° tests, Type C exhibited the largest anchor area and the highest mechanical strengths (IT, RF, and RT) among the three types of mini-implants. The anchor area plays a crucial role in the mechanical strength of mini-implants.

Original languageEnglish
Pages (from-to)96-101
Number of pages6
JournalKaohsiung Journal of Medical Sciences
Volume33
Issue number2
DOIs
Publication statusPublished - 2017 Feb 1

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Torque
Prostheses and Implants
Bone and Bones
Titanium
Stainless Steel

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

Tseng, Yu Chuan ; Wu, Ju Hui ; Ting, Chun Chan ; Chen, Hong Sen ; Chen, Chun Ming. / Evaluation of mechanical strengths of three types of mini-implants in artificial bones. In: Kaohsiung Journal of Medical Sciences. 2017 ; Vol. 33, No. 2. pp. 96-101.
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Evaluation of mechanical strengths of three types of mini-implants in artificial bones. / Tseng, Yu Chuan; Wu, Ju Hui; Ting, Chun Chan; Chen, Hong Sen; Chen, Chun Ming.

In: Kaohsiung Journal of Medical Sciences, Vol. 33, No. 2, 01.02.2017, p. 96-101.

Research output: Contribution to journalArticle

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