Monitoring of bone temperature during osseous preparation for orthodontic micro-screw implants: Effect of motor speed and ressure

被引:37
作者
Nam, Okhyun
Yu, Wonjae
Choi, Man Yong
Kyung, Hee-Moon
机构
[1] Kyungpook Natl Univ, Dept Orthodont, Sch Dent, Taegu, South Korea
[2] Korea Res Inst Stand & Sci, Human Life Measurement Grp, Taejon, South Korea
来源
ADVANCED NONDESTRUCTIVE EVALUATION I, PTS 1 AND 2, PROCEEDINGS | 2006年 / 321-323卷
关键词
bone drilling; bone temperature; infrared thermography; orthodontic micro-implants;
D O I
10.4028/www.scientific.net/KEM.321-323.1044
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The temperature at the surface of the bony recipient site during drilling for orthodontic micro-implant placement was monitored using infrared therm ography. The primary objective was to identify proper drilling conditions to allow efficient drilling without raising the bone temperature above the threshold temperature of 44 degrees C to 47 degrees C. Bovine ribs were selected to provide cortical bone of a similar quality to the human mandible. Four drilling conditions combining 2 motor speeds (600 and 1200 rpm) and 2 pressure loads (500 g and 1000 g) were established based on clinical practice. Much care was taken to duplicate an oral environment, although no irrigation was used to allow the infrared radiation to transmit without being hindered by cooling water. Thermal images were recorded using a Thermovision 900 system (Amega, Danderryd, Sweden). The results showed that the temperature rise relys significantly on the drilling speed and pressure. When both the drilling speed and the pressure were low, the cortical bone could not be cut. However, increasing either the speed or the pressure resulted in a temperature increase. Drill speed of 600 rpm at the pressure load 1000g produced more or less the same temperature., 40-45 degrees C, as when the drill speed was increased to 1200 rpm while keeping the load at 500g. Yet, a temperature as high as 62.4 degrees C was recorded when combining the high motor speed and high pressure. Most of the temperature rise took place during the initial 5-10 seconds of drilling, indicating that intermittent irrigation at an interval of 5 seconds or less would be of particular importance to minimize possible thermal trauma.
引用
收藏
页码:1044 / 1047
页数:4
相关论文
共 11 条
[1]  
Abouzgia MB, 1997, INT J ORAL MAX IMPL, V12, P342
[2]  
BAE SM, 2001, J CLIN ORTHOD, V35, P417
[3]  
Brisman D L, 1996, Int J Oral Maxillofac Implants, V11, P35
[4]  
Clelland N L, 1995, J Prosthodont, V4, P95, DOI 10.1111/j.1532-849X.1995.tb00323.x
[5]   TEMPERATURE THRESHOLD LEVELS FOR HEAT-INDUCED BONE TISSUE-INJURY - A VITAL-MICROSCOPIC STUDY IN THE RABBIT [J].
ERIKSSON, AR ;
ALBREKTSSON, T .
JOURNAL OF PROSTHETIC DENTISTRY, 1983, 50 (01) :101-107
[6]  
Kalidindi V., 2004, OPTIMIZATION DRILL D
[7]   ORTHOGONAL BONE CUTTING - SAW DESIGN AND OPERATING CHARACTERISTICS [J].
KRAUSE, WR .
JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME, 1987, 109 (03) :263-271
[8]  
LAVELLE C, 1980, J ORAL SURG, V38, P499
[9]   TEMPERATURES MEASURED IN HUMAN CORTICAL BONE WHEN DRILLING [J].
MATTHEWS, LS ;
HIRSCH, C .
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME, 1972, A 54 (02) :297-&
[10]  
Reinhardt V., 1997, Animal Welfare Information Center Newsletter, V8, P3