Graduate Institute of Dental Sciences, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
Department of Family Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
Odontology. 2011 Jan;99(1):98-100. doi: 10.1007/s10266-010-0142-3. Epub 2011 Jan 27.
Orthodontic anchorages have recently been reinforced by newly developed mini-implants. The aim of the present study was to investigate the mechanical strengths of infrazygomatic mini-implants. We measured the insertion torque and pull-out strength of three brands of infrazygomatic mini-implants (AbsoAnchors, Bioray, and Lomas). All three mini-implants were 2 mm in diameter, and five of each brand were manually driven 6 mm into artificial bone. Significant differences among the brands were investigated with Kruskal-Wallis tests. We found no significant relationship between insertion torque and pull-out strength in any individual brand. Among the three brands of infrazygomatic mini-implants, we found no significant difference in mechanical strength. The design of an infrazygomatic mini-implant may be the most important factor determining its mechanical strength.
正畸支抗最近得到了新开发的微型种植体的加强。本研究的目的是研究眶下微型种植体的机械强度。我们测量了三种品牌的眶下微型种植体（AbsoAnchors、Bioray 和 Lomas）的插入扭矩和拔出强度。所有三种微型种植体的直径均为 2 毫米，每个品牌均有五个手动植入人工骨 6 毫米。采用 Kruskal-Wallis 检验对品牌之间的差异进行了研究。我们发现，在任何单个品牌中，插入扭矩和拔出强度之间均无显著关系。在三种眶下微型种植体品牌中，我们发现机械强度没有显著差异。眶下微型种植体的设计可能是决定其机械强度的最重要因素。
