The primary outcome of the present study was to assess the percentage of pocket closure, and the secondary aim was to evaluate the clinical performance in terms of clinical attachment level (CAL) gain, probing pocket depth (PPD) reduction, and gingival recession (REC) after the use of cavitron ultrasonic surgical aspirator (CUSA) in deep infrabony defects. Fourteen deep infrabony defects in 11 patients who were previously treated with active periodontal therapy followed by one year of supportive periodontal therapy (at least three sessions) were additionally treated by the aid of CUSA. Eighty-six percent of the initial defects (12 out of 14) resulted in a PD < 5 mm, showing complete resolution six months after CUSA treatment, without any adverse event and with negligible pain (VAS from 0 to 3). CUSA showed potential as a method to promote pocket healing, reduce PPD, and increase clinical attachment (P < 0.001) in deep infrabony defects. This trial is registered with ClinicalTrials.gov .
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机译：本研究的主要结果是评估口袋闭合的百分比，其次要目的是根据临床附着水平（CAL）增高，探查口袋深度（PPD）减少和牙龈退缩（REC）评估临床表现）在深部骨骼缺损中使用Cavitron超声外科手术抽吸器（CUSA）后。在CUSA的帮助下，对11例先前接受过积极牙周治疗，然后接受了一年支持性牙周治疗（至少三节）的患者中的十四个深层骨下缺损进行了治疗。 86％的初始缺陷（14个中的12个）导致PD a <5 mm，在CUSA治疗后六个月显示完全消退，没有任何不良事件且疼痛可忽略（VAS为0至3）。 CUSA显示出了一种潜在的方法，可以促进深部骨骼缺损中的袋愈合，降低PPD并增加临床依从性（P <0.001）。该试验已在ClinicalTrials.gov上注册。
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