Flemmig Thomas F, Hetzel Marc, Topoll Heinz, Gerss Joachim, Haeberlein Ingo, Petersilka Gregor
Department of Periodontics, School of Dentistry, University of Washington, Seattle, WA 98195-7444, USA.
J Periodontol. 2007 Jun;78(6):1002-10. doi: 10.1902/jop.2007.060420.
Glycine powder air polishing (GPAP) has been shown to be significantly more effective in reducing the subgingival cultivable microflora in shallow periodontal pockets compared to curets and is safe when applied directly to root surfaces. The purpose of this study was to assess the subgingival debridement efficacy of GPAP in periodontal pockets with various depths.
In each of 60 patients with severe periodontitis, one tooth with a probing depth (PD) > or =6 mm was randomly assigned to one of the following interventions: GPAP performed in teeth instrumented 3 months earlier (I); GPAP performed in previously non-instrumented teeth (NI); or no treatment (control). GPAP was performed for 5 seconds per surface. After extraction, teeth were stained with 0.5% toluidine blue, and subgingival debridement efficacy was assessed.
Overall, median debridement depth was 2.00 mm in I teeth and 1.86 mm in NI teeth, and the median debrided root surface was 49.24% and 45.64%, respectively. In anatomic PDs (APDs) of 2 to 3 mm, relative debridement depth (debridement depth/APD) ranged from 65% to 80% and 60% to 75% in I and NI teeth, respectively; the corresponding values for debrided root surface were 60% to 70% and 50% to 60%. In control teeth, virtually all subgingival root surfaces were stained. Clinical PD measurements were a median of 1.05 mm deeper than APD.
GPAP for 5 seconds per surface is effective in removing most of the subgingival biofilm in periodontal pockets with an APD < or =3 mm.
与刮治器相比，甘氨酸粉末气喷抛光（GPAP）在减少浅牙周袋内龈下可培养微生物群方面已显示出显著更高的效果，并且直接应用于牙根表面时是安全的。本研究的目的是评估GPAP在不同深度牙周袋中的龈下清创效果。
在60例重度牙周炎患者中，将一颗探诊深度（PD）≥6mm的牙齿随机分配至以下干预措施之一：在3个月前已进行器械治疗的牙齿上进行GPAP（I组）；在先前未进行器械治疗的牙齿上进行GPAP（NI组）；或不进行治疗（对照组）。每个表面进行GPAP治疗5秒。拔牙后，牙齿用0.5%甲苯胺蓝染色，并评估龈下清创效果。
总体而言，I组牙齿的清创深度中位数为2.00mm，NI组牙齿为1.86mm，清创牙根表面的中位数分别为49.24%和45.64%。在2至3mm的解剖学PD（APD）中，I组和NI组牙齿的相对清创深度（清创深度/APD）分别为65%至80%和60%至75%；清创牙根表面的相应值为60%至70%和50%至60%。在对照牙齿中，几乎所有龈下牙根表面均被染色。临床PD测量值比APD中位数深1.05mm。
每个表面进行5秒的GPAP可有效去除APD≤3mm的牙周袋内的大部分龈下生物膜。
