Rossi Marcelle, Duarte Luís Rogério, Mendonça Robson, Fernandes Atson
Bahia School of Medicine and Public Health, Bahia, Brazil.
Clin Implant Dent Relat Res. 2008 Dec;10(4):271-5. doi: 10.1111/j.1708-8208.2008.00091.x. Epub 2008 Apr 1.
The purpose of this study was to obtain anatomical information for installing four zygomatic implants, by measurements of maxillae and zygomata.
Linear and angular measurements were obtained from the maxillae and zygomata of 40 dry skulls.
Based on mean and standard deviation values, the installation angle of the additional implant in the four zygoma technique was between 25 degrees and 47 degrees , and that of the conventional zygomatic implant was between 39 degrees and 62 degrees . The distance between the alveolar crest in the canine region and the lateral margin of the orbital socket was 53.42 mm, and between the alveolar crest in the premolar region and the area closest to the lateral margin of the orbital socket was 42.47 mm.
When the angle of installation of the additional implant is less than 25 degrees and that of the conventional zygomatic implant is less than 39 degrees , perforation of the maxilla, zygoma, or the infratemporal fossa must be avoided. When the angle of installation of an additional implant is greater than 47 degrees and that of the conventional zygomatic implant is greater than 62 degrees , perforation of the orbital floor must be avoided. The length of an additional implant was greater than the length of a conventional zygomatic implant, and should be measured prior to drilling, because the greatest value found for this distance was 61.94 mm, while the maximum length of the zygomatic implants currently available on the market is 52.5 mm.
本研究的目的是通过对上颌骨和颧骨的测量，获取用于植入四颗颧骨种植体的解剖学信息。
对40个干燥颅骨的上颌骨和颧骨进行线性和角度测量。
根据均值和标准差数值，四颗颧骨种植技术中额外种植体的植入角度在25度至47度之间，传统颧骨种植体的植入角度在39度至62度之间。犬齿区牙槽嵴与眶窝外侧边缘之间的距离为53.42毫米，前磨牙区牙槽嵴与最靠近眶窝外侧边缘区域之间的距离为42.47毫米。
当额外种植体的植入角度小于25度且传统颧骨种植体的植入角度小于39度时，必须避免上颌骨、颧骨或颞下窝穿孔。当额外种植体的植入角度大于47度且传统颧骨种植体的植入角度大于62度时，必须避免眶底穿孔。额外种植体的长度大于传统颧骨种植体的长度，钻孔前应进行测量，因为该距离的最大值为61.94毫米，而目前市场上可用的颧骨种植体的最大长度为52.5毫米。
