Ochi S, Morris H F, Winkler S
Department of Veterans Affairs Medical Center, Dental Research, Ann Arbor, Michigan 48105, USA.
Implant Dent. 1994 Fall;3(3):159-62. doi: 10.1097/00008505-199409000-00003.
Many of the presently used methods of evaluating osseointegration at second-stage surgery are highly subjective. The Periotest is claimed to offer a more objective means to assess osseointegration by means of microcomputer-controlled percussion. In 1991 the Dental Implant Clinical Research Group initiated a long-term clinical study in cooperation with the Department of Veterans Affairs to investigate the influence of implant design, application, and site of placement on clinical performance and crestal bone height. As part of this investigation, the Periotest values for 1,565 root form implants were determined at second-stage surgery and correlated with type, material, coating, diameter, and length. Hydroxyapatite-coated implants and increased implant diameter and length produced Periotest values that indicated a greater extent of stability as compared with noncoated implants with shorter diameters and lengths. Hydroxyapatite-coated cylinder-type implants yielded the most favorable Periotest readings. Not only does the Periotest have the potential of being a valuable instrument for assessing implant mobility at second-stage surgery, but it also appears to have the capability of determining slight differences in the implant-bone complex.
目前在二期手术中评估骨结合的许多方法主观性都很强。Periotest（牙周测试计）据称能通过微机控制的叩诊提供一种更客观的评估骨结合的方法。1991年，种植牙临床研究小组与退伍军人事务部合作开展了一项长期临床研究，以调查种植体设计、应用及植入部位对临床性能和牙槽嵴骨高度的影响。作为该调查的一部分，在二期手术时测定了1565颗根形种植体的Periotest值，并将其与种植体的类型、材料、涂层、直径和长度进行关联。与直径较短和长度较短的非涂层种植体相比，羟基磷灰石涂层种植体以及增加种植体直径和长度所产生的Periotest值表明稳定性程度更高。羟基磷灰石涂层圆柱型种植体的Periotest读数最为理想。Periotest不仅有可能成为评估二期手术时种植体移动性的有价值工具，而且似乎还能够确定种植体 - 骨复合体中的细微差异。
