Surface and intra-pulpal temperature rises during tooth bleaching: an in vitro study
Surface and intra-pulpal temperature rises during tooth bleaching: an in vitro study
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牙齿漂白过程中表面和牙髓内温度升高：一项体外研究
DOI：
10.1038/sj.bdj.4812558
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
J. Rees
中科院分区：
文献类型：
--
作者：
M. Sulieman;M. Addy;J. Rees
目的测定牙齿美白过程中上、下前牙牙体表面和牙髓内温度的体外升高情况。方法采用热电偶测量拔牙后上颌中切牙表面的温升。测量上、下中切牙、侧切牙和犬齿的牙髓内温度。测试了四种推荐的牙齿漂白灯；一个等离子弧灯，一个氙卤灯，一个标准卤素灯和一个二极管激光灯。温度测量是在唇牙表面有漂白剂和没有漂白剂的情况下进行的。结果在没有漂白凝胶的情况下，表面温度升高范围为0.44 C（光弓）~ 86.3 C（激光）。牙髓内温度升高范围为0.30℃至15.96℃，漂白凝胶的存在降低了牙齿表面和牙髓内的温度升高。结论大多数漂白灯的牙髓内温度升高低于5.50℃的临界阈值，这被认为会造成不可逆的牙髓损伤。唯一一种使髓内温度升高超过该阈值的灯是激光灯，使用该设备时应谨慎。
Objective To measure the surface and intra-pulpal temperature increases in vitro on upper and lower anterior teeth during tooth whitening procedures.Method A thermocouple was used to measure the temperature increase on the surface of an extracted upper central incisor tooth. Intra-pulpal temperature readings were made on upper and lower central incisors, lateral incisors and canines. Four lamps recommended for tooth bleaching were tested; a plasma arc lamp, a xenon-halogen lamp, a standard halogen lamp and a diode laser lamp. Temperature measurements were made with and without the bleaching agent present on the labial tooth surface.Results The increase in surface temperature readings ranged from 0.44 C (luma arch) to 86.3 C (laser) with no bleaching gel present. Intra-pulpal temperature increases ranged from 0.30 C to 15.96 C. The presence of the bleaching gel reduced temperature increases seen at the tooth surface and within the pulp.Conclusions The increase in the intrapulpal temperature with most bleaching lamps was below the critical threshold of a 5.50 C increase thought to produce irreversible pulpal damage. The only lamp that produced an intrapulpal temperature increase above this threshold was the laser-based lamp and caution is advised when using this equipment.