Suh Young-Il, Lundgren Tord, Sigurdsson Thorarinn, Riggs Matt, Crigger Max
Advanced Education Program in Periodontics and Implant Surgery, School of Dentistry, Loma Linda University, CA 92354, USA.
J Periodontol. 2002 Jun;73(6):637-42. doi: 10.1902/jop.2002.73.6.637.
Probing bone measurements as an alternative to open bone measurements to evaluate regenerative procedures in furcation defects do not seem to be used as yet. The purpose of the present study was to investigate the reliability of probing bone measurements in such defects.
Fifteen patients scheduled for surgical treatment of a total of 30 mandibular molars with buccal or lingual Class II furcation defects were studied. During treatment, duplicate vertical and horizontal recordings of probing attachment levels, probing bone levels, and open bone levels were taken by independent examiners.
Deviations of both vertical and horizontal recordings between the first and second examiners were within +/-1 mm in 90% to 100% of examined sites for all 3 measurements. Standard deviations of differences between pairs of duplicate recordings were also similar for the 3 measurements both for vertical and horizontal defect dimensions and amounted to 0.7 to 0.9 mm. On average, vertical and horizontal open bone levels were 0.9 to 1.1 mm deeper than probing bone levels. Probing bone levels, in turn, were 1.1 to 1.5 mm deeper than probing attachment levels.
In view of the consistency demonstrated between probing bone level and open bone level measurements in mandibular Class II defects, coupled with the additional discomfort for the patient of a reentry surgery and a possible reentry traumatic effect, open bone level measurements do not seem necessary or even justified to evaluate effects of periodontal therapy in these defects, and can be substituted by probing bone measurements.
作为评估根分叉病变再生治疗的一种替代方法，探测骨测量似乎尚未被采用。本研究的目的是调查在这类病变中探测骨测量的可靠性。
对15例计划接受手术治疗的患者进行研究，这些患者共有30颗下颌磨牙存在颊侧或舌侧II类根分叉病变。在治疗过程中，由独立检查者对探测附着水平、探测骨水平和开放骨水平进行重复的垂直和水平记录。
对于所有3项测量，第一位和第二位检查者之间垂直和水平记录的偏差在90%至100%的检查部位内均在±1mm以内。对于垂直和水平缺损尺寸，3项测量的重复记录对之间差异的标准差也相似，为0.7至0.9mm。平均而言，垂直和水平开放骨水平比探测骨水平深0.9至1.1mm。反过来，探测骨水平比探测附着水平深1.1至1.5mm。
鉴于在下颌II类病变中探测骨水平和开放骨水平测量之间显示出的一致性，再加上再次手术给患者带来的额外不适以及可能的再次手术创伤效应，在评估这些病变的牙周治疗效果时，开放骨水平测量似乎没有必要甚至不合理，可以用探测骨测量来替代。
