Murakami Keiko, Kitasako Yuichi, Burrow Michael F, Tagami Junji
Cariology and Operative Dentistry, Department of Restorative Science, Tokyo Medical and Dental University, Japan.
Dent Mater J. 2006 Sep;25(3):423-9. doi: 10.4012/dmj.25.423.
The aim of this study was to evaluate the pH at the surface of active or arrested carious dentin using a micro pH sensor, and to compare the relationship between different pH measurement techniques. Twenty extracted carious teeth were divided into two groups, active or arrested caries, according to predefined clinical criteria before extraction. The surface pH values of carious dentin were measured using three methods: surface pH directly measured using a micro pH sensor (Direct); sectioned teeth measured using a pH-imaging microscope (Imaging) or micro pH sensor (Slice). For all techniques, statistically significant differences in pH values were observed between active and arrested dentinal caries (p<0.05). In addition, positive relations between the three pH measurement methods were found. In conclusion, Direct pH measurement using micro pH sensor might assist in caries lesion assessment and clinical treatment based on the concept of Minimal Intervention.
本研究的目的是使用微型pH传感器评估活动龋或静止龋牙本质表面的pH值，并比较不同pH测量技术之间的关系。根据拔牙前预先确定的临床标准，将20颗拔除的龋牙分为两组：活动龋组或静止龋组。使用三种方法测量龋牙本质的表面pH值：使用微型pH传感器直接测量表面pH值（直接法）；使用pH成像显微镜（成像法）或微型pH传感器（切片法）测量切片牙齿的pH值。对于所有技术，活动龋和静止龋牙本质之间的pH值均存在统计学显著差异（p<0.05）。此外，发现三种pH测量方法之间存在正相关关系。总之，基于微创理念，使用微型pH传感器直接测量pH值可能有助于龋损评估和临床治疗。
