Misic Tijana, Markovic Aleksa, Todorovic Aleksandar, Colic Snjezana, Miodrag Scepanovic, Milicic Biljana
Clinic of Oral Surgery, Faculty of Stomatology, University of Belgrade, Belgrade, Serbia.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011 Jul;112(1):28-33. doi: 10.1016/j.tripleo.2010.08.010. Epub 2010 Dec 13.
The aim of this study was to compare changes in temperature of the surrounding bone at various osteotomy depths during implant site preparation by bone condensing and by bone drilling as well as the dynamics of their change.
In the present "in vitro" study, pig ribs with uniform thickness of cortical bone of 2 mm were used. Lateral bone-condensing (experimental group) and bone-drilling techniques (control group) were performed. Temperature changes were recorded at a distance of 0.5 mm from the final test osteotomy by 3 thermocouples at the depths of 1, 5, and 10 mm in tripod configuration. Data were collected from 48 measurements, 24 for each group.
Significantly higher mean temperature increase at the depth of 5 mm was observed during bone drilling compared with bone condensing, whereas for the depths of 1 and 10 mm differences were not significant between the 2 surgical techniques. During bone condensing, the mean temperature rise was continuously decreasing with increasing depth of osteotomies, whereas during bone drilling the mean temperature rise was first increased and reached a peak at the depth of 5 mm and then began to decrease with increasing depth of the osteotomies.
The bone-condensing technique applied in the jaw bone class D4 offers an advantage over bone drilling because it generates a significantly smaller amount of heat.
本研究旨在比较在种植位点预备过程中，采用骨挤压和骨钻孔技术在不同截骨深度时周围骨组织温度的变化及其变化动态。
在当前这项“体外”研究中，使用了皮质骨厚度均一为2毫米的猪肋骨。实施了外侧骨挤压（实验组）和骨钻孔技术（对照组）。通过3个热电偶以三脚架形式在距离最终测试截骨处0.5毫米的位置，于1、5和10毫米深度记录温度变化。从48次测量中收集数据，每组24次。
与骨挤压相比，骨钻孔时在5毫米深度观察到显著更高的平均温度升高，而在1和10毫米深度，两种手术技术之间的差异不显著。在骨挤压过程中，平均温度升高随着截骨深度增加而持续下降，而在骨钻孔过程中，平均温度升高首先增加并在5毫米深度达到峰值，然后随着截骨深度增加开始下降。
在D4类颌骨中应用的骨挤压技术比骨钻孔具有优势，因为它产生的热量显著更少。
