Perry D A, McDowell J, Goodis H E
Department of Dental Public Health and Hygiene, University of California, San Francisco, USA.
J Periodontol. 1997 Oct;68(10):990-5. doi: 10.1902/jop.1997.68.10.990.
This study quantified changes in blood flow following tooth brushing, using laser Doppler flowmetry (LDF). Twenty subjects had polysiloxane stents fabricated with openings to permit placement of the LDF probe on the mesial papillae of 6 teeth. Probing depth, plaque index, and gingival index were recorded and subjects instructed in brushing. LDF initially recorded a 30 second baseline blood flow. The stent was removed and subjects brushed the site for either 3 or 10 seconds. The stent was repositioned and recordings again taken, followed by a control reading. The process was repeated 4 weeks later. Correlations between baseline and control readings were 0.585 (P < 0.001) at the first visit, and 0.654 (P < 0.001) at the return visit. The mean control blood flow was 156.4 perfusion units. The 3 and 10 second brushing increased the mean value 22.6 units and 21.2 units respectively (both P < 0.001). Tooth brushing for both 3 and 10 seconds significantly increased gingival blood flow in the papillary gingiva of healthy individuals.
本研究使用激光多普勒血流仪（LDF）对刷牙后血流量的变化进行了量化。20名受试者制作了带有开口的聚硅氧烷支架，以便将LDF探头放置在6颗牙齿的近中乳头处。记录探诊深度、菌斑指数和牙龈指数，并指导受试者刷牙。LDF最初记录30秒的基线血流量。移除支架，受试者对该部位刷牙3秒或10秒。重新放置支架并再次进行记录，随后进行对照读数。4周后重复该过程。首次就诊时基线读数与对照读数之间的相关性为0.585（P < 0.001），复诊时为0.654（P < 0.001）。对照血流量的平均值为156.4灌注单位。3秒和10秒的刷牙分别使平均值增加了22.6单位和21.2单位（均P < 0.001）。3秒和10秒的刷牙均显著增加了健康个体乳头牙龈的牙龈血流量。
