Keagle J G, Garnick J J, Searle J R, Thompson W O
Department of Periodontics, School of Dentistry, Medical College of Georgia, Augusta 30912, USA.
J Clin Periodontol. 1995 Dec;22(12):953-7. doi: 10.1111/j.1600-051x.1995.tb01801.x.
This study was conducted to determine whether the gingival tissue lateral to the periodontal sulcus contributes resistance to the advancement of a periodontal probe tip into the sulcus under different applied pressures. An electromechanical device was used to advance a probe tip 0.6 mm in diameter into the facial sulcus at a constant speed until resisting forces of 0.70 N were encountered. The device registered the resisting force and probe advancement simultaneously. The gingiva of all 2nd incisors, 2nd premolars, and 1st molars of 4 young adult male beagle dogs were tested. After the first measurement, the buccal gingiva of experimental sites were incised mesiodistally from the gingival margin to the alveolar crest and the sulcus was reprobed. 2 experimental and control quadrants were selected randomly resulting in 6 sets of both experimental and control data from each animal. The data were analyzed with analysis of variance. The analysis demonstrated significant variation from site to site, and dog to dog; therefore, only changes between the 1st and 2nd probings at the same sites could be compared. Less variability of probing distance in different animals occurred at higher forces; however, the incision had a significant effect on probing distance at these forces. The pressure at which probing distance had less variability among animals and least affected when the gingival sulcular wall was incised was estimated to be 106 N/cm2. This corresponds to 30 g force on the 0.6 mm diameter probe.
本研究旨在确定牙周沟外侧的牙龈组织在不同施加压力下，是否对牙周探针尖端向沟内推进具有阻力。使用机电装置以恒定速度将直径0.6毫米的探针尖端推进至面部龈沟，直至遇到0.70牛的阻力。该装置同时记录阻力和探针推进情况。对4只年轻成年雄性比格犬的所有第二切牙、第二前磨牙和第一磨牙的牙龈进行了测试。首次测量后，从牙龈边缘向牙槽嵴近远中切开实验部位的颊侧牙龈，并重新探测龈沟。随机选择2个实验象限和2个对照象限，每只动物得到6组实验数据和对照数据。采用方差分析对数据进行分析。分析表明，不同部位和不同犬之间存在显著差异；因此，只能比较同一部位第一次和第二次探测之间的变化。在较高力值时，不同动物间探测距离的变异性较小；然而，在这些力值下，切开操作对探测距离有显著影响。估计在动物间探测距离变异性较小且牙龈沟壁切开时影响最小的压力为106 N/cm2。这相当于作用在直径0.6毫米探针上的30克力。
