Schulte J R, Morrissette D B, Gasior E J, Czajewski M V
Department of Restorative and Preventive Dentistry, Loyola University of Chicago School of Dentistry, Maywood, Illinois, USA.
Compendium. 1993 Nov;14(11):1362, 1364-6, passim; quiz 1372.
An investigative study was performed to evaluate changes in gingival health with the application of a 10% carbamide peroxide bleaching gel using exposure times of 2 and 7 hours (overnight). The presence or absence of gingival inflammation was recorded using the Loe and Silness Gingival Index at intervals over a 28-day period. The results showed no statistical significance between the preoperative gingival index scores and those recorded at any point during the study, regardless of exposure time.
进行了一项调查研究，以评估使用10%过氧化脲漂白凝胶、暴露时间为2小时和7小时（过夜）时牙龈健康状况的变化。在28天的时间内，每隔一段时间使用洛和西尔斯牙龈指数记录牙龈炎症的有无。结果显示，无论暴露时间如何，术前牙龈指数评分与研究期间任何时间记录的评分之间均无统计学意义。
