Bishara Samir E, Ajlouni Raed, Laffoon John F, Warren John J
Orthodontic Department, College of Dentistry, University of Iowa, Iowa City 52242, USA.
Angle Orthod. 2002 Jun;72(3):199-202. doi: 10.1043/0003-3219(2002)072<0199:EOAFRS>2.0.CO;2.
Conventional adhesive systems use three different agents--an enamel conditioner, a primer solution, and an adhesive resin--during the bonding of orthodontic brackets to enamel. A unique characteristic of some new bonding systems in operative dentistry is that they combine the conditioning and priming agents into a single application. Combining conditioning and priming saves time and should be more cost-effective to the clinician and indirectly to the patient. The purpose of this study was to assess and compare the effects of self-etching primers, including a fluoride-releasing primer, on the shear bond strength of orthodontic brackets. The brackets were bonded to extracted human teeth according to one of four protocols. In group 1 (control), teeth were etched with 37% phosphoric acid; after the sealant was applied, the brackets were bonded with Transbond XT (3M Unitek, Monrovia, Calif) and light cured for 20 seconds. In group 2, a self-etch acidic primer (3M ESPE, St Paul, Minn) was applied as suggested by the manufacturer, and the brackets were then bonded with Transbond XT as in the first group. In group 3, an experimental self-etch primer EXL #547 (3M ESPE) was applied to the teeth as suggested by the manufacturer, and the brackets were then bonded as in groups 1 and 2. In group 4, a fluoride-releasing self-etch primer, One-Up Bond F (J. Mortia, USA Inc. Irvine, Calif) that also has a novel dye-sensitized photo polymerization initiator system was applied as suggested by the manufacturer, and the brackets were then bonded as in the other groups. The present in vitro findings indicated that the shear bond strengths of the four groups were significantly different (P = .001). Duncan multiple range tests indicated that One-Up Bond F (mean +/- SD strength, 5.1+/-2.5 MPa) and Prompt L-Pop (strength, 7.1+/-4.4 MPa) had significantly lower shear bond strengths than both the EXL #547 self-etch primer (strength, 9.7+/-3.7 MPa) or the phosphoric acid etch and the conventional adhesive system (strength, 10.4+/-2.8 MPa).
传统的粘结系统在将正畸托槽粘结到牙釉质上的过程中使用三种不同的试剂——牙釉质调节剂、底漆溶液和粘结树脂。口腔手术中一些新型粘结系统的一个独特特点是它们将调节和底漆试剂结合在一次应用中。结合调节和底漆可节省时间，对临床医生以及间接对患者来说应该更具成本效益。本研究的目的是评估和比较自酸蚀底漆（包括一种含氟底漆）对正畸托槽剪切粘结强度的影响。根据四种方案之一将托槽粘结到拔除的人牙上。在第1组（对照组）中，用37%的磷酸蚀刻牙齿；涂抹封闭剂后，用Transbond XT（3M Unitek，蒙罗维亚，加利福尼亚州）粘结托槽并光固化20秒。在第2组中，按照制造商的建议应用自酸蚀酸性底漆（3M ESPE，圣保罗，明尼苏达州），然后像第一组一样用Transbond XT粘结托槽。在第3组中，按照制造商的建议将实验性自酸蚀底漆EXL #547（3M ESPE）应用于牙齿，然后像第1组和第2组一样粘结托槽。在第4组中，按照制造商的建议应用一种含氟自酸蚀底漆One-Up Bond F（J. Mortia，美国公司，尔湾，加利福尼亚州），该底漆还具有一种新型染料敏化光聚合引发剂系统，然后像其他组一样粘结托槽。目前的体外研究结果表明，四组的剪切粘结强度有显著差异（P = 0.001）。邓肯多重极差检验表明，One-Up Bond F（平均±标准差强度，5.1±2.5 MPa）和Prompt L-Pop（强度，7.1±4.4 MPa）的剪切粘结强度明显低于EXL #547自酸蚀底漆（强度，9.7±3.7 MPa）或磷酸蚀刻和传统粘结系统（强度，10.4±2.8 MPa）。
Zotero 插件