引导性组织再生术治疗Ⅱ度根分叉病变

Treatment of class II furcation involvement: guided tissue regeneration with atelocollagen membrane

目的 观察引导性组织再生术 (guidedtissueregeneration ,GTR)治疗Ⅱ度根分叉病变的疗效 ,分析影响其疗效的因素。方法 使用不全胶原膜对 17例患者的 2 6处Ⅱ度根分叉病变行GTR术 ,手术前、后检查临床指标并行定位X线片数字减影分析。结果 术后 3、6、12个月水平探入深度分别减少 1 8、2 2及 2 5mm ,且有探诊深度减少和附着获得 ,差异均有显著性 ;骨量于术后 2个月已有增加 ,并随术后时间延长而增多。 7处达到病变消失和基本消失 ;疗效与骨缺损及缺损口大小有关。结论 GTR治疗Ⅱ度根分叉病变可获得良好的临床疗效。

Objective To evaluate the effectiveness of guided tissue regeneration (GTR) on class II furcation involvement with absorbable atelocollagen membranes made in China Methods GTR was performed on 26 sites with class II furcation defect in 17 patients Clinical measurements and digital subtraction radiography were used to evaluate the effect Results Clinical measurements showed significant attachment gain, significant decrease of probing depth (PD) and horizontal probing depth (HPD) at 3, 6, and 12 month after surgery The mean reduction of HPD were 1 8 mm, 2 2 mm, 2 5 mm at 3 month (23 sites), 6 month (12 sites),and 12 month (6 sites) after surgery respectively PD decreased by 1 22 mm, 1 56 mm and 1 75 mm Attachment gained by 1 17 mm, 2 11 mm and 1 75 mm Three sites showed complete defect fill during 3 to 12 months after surgery Only 1 mm or less could be probed horizontally in another 4 furcation lesions during 3 to 12 months post operation The HPD of pre operation in these 7 cases were 2 0 mm to 4 0 mm, and the bone defects observed during surgery were smaller in these cases than in other cases The other 19 furcation involvement improved significantly The result of digital subtraction radiography showed that increase of bone density was found at 2 months after surgery The amount of bone gain increased with time The areas of increased bone density were 0 3～25 7 mm 2 in 13 teeth Conclusion The class II furcation involvement can be treated by GTR with absorbable atelocollagen membranes with good results