Renneboog-Squilbin C, Nammour S, Coomans D, Barel A, Carleer M, Dourov N
Laboratoire de Chimie Générale 1, Université Libre de Bruxelles, Belgium.
J Biol Buccale. 1989 Sep;17(3):179-86.
In order to weld cracks in tooth enamel, it is necessary to bring the surface of the tooth to the fusion temperature of the enamel (greater than 1,000 degrees C). The study investigated whether this increase in surface temperature can cause damage to the vitality of the tooth by recording, using a thermocouple, the temperature in the pulp chamber of teeth exposed to argon laser irradiation (power density after focusing: 4000 W/cm2; duration of continuous irradiation: 1-5 seconds). These pulp temperature increases were compared with those considered safe for the tooth, i.e., contact with a hot drink, drilling of cavities with air + water cooling. It was shown that punctual irradiations with an argon laser for periods of 2 or 4 seconds generated temperature increases in the pulp chamber which were less than inferior to those caused by contact with water at 54-55 degrees C for 1 or 2 seconds, and were of the same order as those caused by the drilling of class III or V cavities of 1 mm in depth and 1 mm in diameter. These results suggest that it is worth continuing research into applying the technique in the mouth.
为了焊接牙釉质中的裂缝，有必要将牙齿表面加热到牙釉质的熔化温度（高于1000摄氏度）。该研究通过使用热电偶记录暴露于氩激光照射（聚焦后的功率密度：4000 W/cm²；连续照射持续时间：1 - 5秒）的牙齿牙髓腔中的温度，来调查这种表面温度的升高是否会对牙齿的活力造成损害。将这些牙髓温度的升高与那些被认为对牙齿安全的温度升高进行比较，即接触热饮、在空气 + 水冷却的情况下钻牙洞时的温度升高。结果表明，氩激光2秒或4秒的点状照射在牙髓腔中产生的温度升高低于与54 - 55摄氏度的水接触1秒或2秒所引起的温度升高，并且与钻深度为1毫米、直径为1毫米的III类或V类牙洞所引起的温度升高处于同一量级。这些结果表明，值得继续研究在口腔中应用该技术。
