Overton Johnie D, Vance Richard I
Department of Restorative Dentistry, University of Texas Health Science Center-MSC 7890, 7703 Floyd Curl Drive, San Antonio, Texas 78229-3900, USA.
Am J Dent. 2005 Dec;18(6):320-2.
To evaluate in vitro the effect of adhesive volume on the bond strength of bonded complex amalgam restorations using Amalgambond Plus with HPA powder.
Standardized 6 mm-diameter dentin cylinders were prepared from 30 extracted human molar teeth. Specimens were divided into two groups (n=15). Group 1 received a minimal volume (5 microl) of Amalgambond Plus with HPA powder and Group 2 received a surplus volume (10 microl) of Amalgambond Plus with HPA powder. Amalgam restorations were placed, and loaded at 45 degrees to the long axis of the tooth using an Instron testing machine.
Group 1: 14.71 (+/- 3.41) MPa, Group 2: 15.67 (+/- 3.72) MPa. A Student's t-test indicated no significant difference between the groups (P> 0.05).
在体外评估使用含HPA粉末的Amalgambond Plus时，粘结剂体积对粘结复合银汞合金修复体粘结强度的影响。
从30颗拔除的人磨牙制备直径6mm的标准化牙本质圆柱体。样本分为两组（n = 15）。第1组接受最小体积（5微升）含HPA粉末的Amalgambond Plus，第2组接受过量体积（10微升）含HPA粉末的Amalgambond Plus。放置银汞合金修复体，并使用Instron测试机以与牙齿长轴成45度角加载。
第1组：14.71（±3.41）MPa，第2组：15.67（±3.72）MPa。学生t检验表明两组之间无显著差异（P>0.05）。
