Evaluation of a laser Doppler flowmeter to assess blood flow in human primary incisor teeth.
Evaluation of a laser Doppler flowmeter to assess blood flow in human primary incisor teeth.
复制标题
评估激光多普勒流量计以评估人类乳切牙的血流。
作者：
R. Fratkin;D. Kenny;D. Johnston
目的
本研究确定了便携式Advance激光流量计21型（一种临床仪器）在牙髓血流存在或不存在时是否会显示显著值;流量计的模拟输出是否与心率时间相关;唇侧和舌侧牙冠表面是否产生不同的流量值。
方法
牙齿在两种情况下进行测试：牙齿在原位和提取，或与纸浆存在和删除。
结果
拔牙前后及原位去髓前后的测量值有显著性差异。这些发现证实了流量计测量到了血流的存在。将心电图波的峰值和流量计的规则信号波动时间关联，并验证从牙髓测量的心率。个别牙齿的舌面和唇面的值差异不显著。
结论
该仪器被证明是一种有效的手段，确定存在的牙髓血流量在乳牙。
PURPOSE
This study determined whether the portable Advance Laser Flowmeter Model 21, a clinical instrument, would indicate significant values when pulpal blood flow was present or absent; whether the analog output of the flowmeter was time-linked to the heart rate; and whether labial and lingual crown surfaces produced different flow values.
METHODS
Teeth were tested under two conditions: with the teeth in situ and extracted, or with the pulp present and removed.
RESULTS
Values before and after the teeth were extracted, and those before and after pulpectomy with the tooth in situ were significantly different. These findings verified that the flowmeter measured the presence of bloodflow. Peaks of the electrocardiogram waves and the regular signal fluctuations of the flowmeter were time-linked and verified the measurement of the heart rate from the dental pulp. Differences in the values for the lingual and labial surfaces of individual teeth were not significant.
CONCLUSIONS
This instrument proved a valid means of determining the presence of pulpal blood flow in primary incisors.