Johansson Karl-Johan, Johansson Carin Starkhammar, Ravald Nils
Department of Medical and Health Science, Linköping University, Sweden.
Swed Dent J. 2013;37(2):87-95.
The aim of this study was to evaluate the long term outcome of furcation involved molars in a population treated for periodontal disease. Initially, the study sample was 147 referred periodontal patients. Periodontal treatment consisted of oral hygiene instructions, supra- and subgingival scaling and periodontal surgery. After treatment 99 patients participated in a two year study on root caries. The patients got maintenance treatment every third to fourth month during 2 years. At the end of that study the patients were periodontally healthy and were referred back for supportive treatment to the referring dentist. Thirteen to 16 years after periodontal treatment 81 patients were still alive and 64 accepted a re-examination. At the start of the observation period the remaining 64 patients had in total 1537 teeth. During the 13 to 16 year follow up 217 teeth were lost. The number of molars at baseline was 361. The number of furcation involvement with different degrees were; 267 (0), 67 (I), 25 (II) and 2 (III) respectively. Totally 69 molars were lost during follow up. The proportion of molar loss according to the degree of furcation involvements 0 to III at baseline were 15%, 29%, 40% and 100% respectively. It was a significant greater risk of loosing an initially furcation involved molar than a single rooted tooth (p<0.0001). The risk of loosing an initially furcated molar increased with the degree of furcation involvement (degree I; p<0.05, degree II; p<0.01). I N CONCLUSION: During a long term observation period molars with furcation involvements are more frequently lost than not furcation involved molars. However, two thirds are still in function 13 to 16 years after treatment which indicate that molars with furcation involvements might survive long after periodontal treatment.
本研究的目的是评估牙周病治疗人群中根分叉病变磨牙的长期预后。最初，研究样本为147名转诊的牙周病患者。牙周治疗包括口腔卫生指导、龈上和龈下刮治以及牙周手术。治疗后，99名患者参与了一项为期两年的根龋研究。在两年期间，患者每三到四个月接受一次维护治疗。在该研究结束时，患者牙周健康，并被转回转诊牙医处接受支持性治疗。牙周治疗13至16年后，81名患者仍然存活，64名患者接受了复查。在观察期开始时，其余64名患者共有1537颗牙齿。在13至16年的随访期间，217颗牙齿脱落。基线时磨牙数量为361颗。不同程度根分叉病变的数量分别为：267颗（0度）、67颗（I度）、25颗（II度）和2颗（III度）。随访期间共69颗磨牙脱落。根据基线时根分叉病变程度0至III度，磨牙脱落的比例分别为15%、29%、40%和100%。与单根牙相比，最初有根分叉病变的磨牙脱落风险显著更高（p<0.0001）。最初有根分叉病变的磨牙脱落风险随着根分叉病变程度的增加而增加（I度；p<0.05，II度；p<0.01）。结论：在长期观察期内，有根分叉病变的磨牙比无根分叉病变的磨牙更频繁脱落。然而，治疗13至16年后仍有三分之二的磨牙仍在发挥功能，这表明有根分叉病变的磨牙在牙周治疗后可能长期存活。
