Department of Chemistry, University of Bath, Bath BA2 7AY, UK.
Department of Chemistry, University of Bath, Bath BA2 7AY, UK.
Ultrason Sonochem. 2014 Nov;21(6):2052-60. doi: 10.1016/j.ultsonch.2013.12.029. Epub 2014 Jan 8.
An ultrasonic dental descaling instrument has been characterised using sonochemical techniques. Mapping the emission from luminol solution revealed the distribution of cavitation produced in water around the tips. Hydroxyl radical production rates arising from water sonolysis were measured using terephthalate dosimetry and found to be in the range of μmolmin(-1), comparable with those from a sonochemical horn. Removal of an ink coating from a glass slide showed that cleaning occurred primarily where the tip contacted the surface but was also observed in regions where cavitation occurred even when the tip did not contact the surface. Differences in behaviour were noted between different tip designs and computer simulation of the acoustic pressure distributions using COMSOL showed the reasons behind the different behaviour of the tip designs.
一种超声牙科洁牙仪器已采用声化学技术进行了特性描述。对鲁米诺溶液的发射进行测绘，揭示了在水周围的尖端产生的空化的分布。使用对苯二甲酸酯剂量测定法测量了水超声分解产生的羟基自由基生成速率，发现其范围为μmolmin(-1)，与声化学号角相当。从玻璃载玻片上清除油墨涂层表明，清洗主要发生在尖端接触表面的地方，但即使尖端没有接触表面，在空化发生的区域也观察到了清洗。不同尖端设计之间的行为差异已被注意到，并且使用 COMSOL 对声压分布进行计算机模拟表明了尖端设计不同行为的原因。
