Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Bauru, SP 17012-901, Brazil.
Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Bauru, SP 17012-901, Brazil.
Br J Oral Maxillofac Surg. 2024 Jun;62(5):459-463. doi: 10.1016/j.bjoms.2024.01.011. Epub 2024 Feb 2.
Bone removal is commonly used in the extraction of third molars and the heat generated during the process can interfere with the repair of bone. The aim of this study was to evaluate the temperature variation presented in bone removal performed with a high-speed turbine (400000 rpm), implant motor with straight piece (100000 rpm), low-speed micromotor (20000 rpm) and piezoelectric saw (30 kHz) in pig mandibles. For this, bone removal was carried out around 20 posterior teeth, under constant saline solution irrigation with a syringe and needle. In addition, the time required to perform bone removal was recorded. The results indicated a mean (SD) temperature variation of 0.96 °C (0.6 °C) for the high-speed turbine, 1.38 °C (0.5 °C) with the implant motor, 2.22 °C (0.7 °C) for the low-speed micromotor and 2.90 °C (1.3 °C) for the piezoelectric saw. The conventional variance was calculated discounting the variation of time used for bone removal around the teeth. There was a statistically significant difference in temperature variation between the high-speed turbine vs the micromotor (p = 0.009) and the high speed micromotor vs the piezoelectric saw (p = 0.04). We conclude that there is a statistically significant difference in temperature variation between the instruments used in oral and maxillofacial surgery, with higher rotation speeds resulting in the lowest temperature variations and a reduced surgical time.
骨切除常用于第三磨牙的拔除，过程中产生的热量会干扰骨的修复。本研究旨在评估高速涡轮机（400000rpm）、带直柄的种植体马达（100000rpm）、低速微电机（20000rpm）和压电锯（30kHz）在猪下颌骨中进行骨切除时的温度变化。为此，在持续盐水冲洗下（通过注射器和针头），围绕 20 颗后牙进行骨切除。此外，还记录了进行骨切除所需的时间。结果表明，高速涡轮机的平均（SD）温度变化为 0.96°C（0.6°C），种植体马达为 1.38°C（0.5°C），低速微电机为 2.22°C（0.7°C），压电锯为 2.90°C（1.3°C）。常规方差是通过扣除围绕牙齿进行骨切除的时间变化来计算的。高速涡轮机与微电机（p=0.009）和高速微电机与压电锯（p=0.04）之间的温度变化差异具有统计学意义。我们得出结论，口腔颌面外科手术中使用的仪器之间的温度变化存在统计学差异，转速越高，温度变化越低，手术时间越短。
