Department of Ophthalmology, University Hospital Basel, University Basel, Basel, Switzerland.
Department of Maxillofacial Surgery, University Hospital Basel, Basel, Switzerland.
Br J Ophthalmol. 2014 Jul;98(7):980-3. doi: 10.1136/bjophthalmol-2013-303141. Epub 2013 Jul 13.
Preparation of the lamina during osteo-odonto-keratoprosthesis (OOKP) design is complex, and its longevity and watertightness important. To date, only acrylic bone cements have been used for bonding the optical cylinder to the tooth dentine. Our aim was to evaluate different dental adhesives for OOKP preparation.
Specimens of bovine teeth were produced by preparing 1.5-mm thick dentine slices with holes having a diameter of 3.5 mm. Each group (n=10 per group) was luted with either classic poly-(methyl methacrylate) (PMMA) bone cement, universal resin cement or glass ionomer cement. All specimens underwent force measurement using a uniaxial traction machine.
The highest mean force required to break the bond was measured for PMMA bone cement (128.2 N) followed by universal resin cement (127.9 N), with no statistically significant difference. Glass ionomer cement showed significantly lower force resistance (78.1 N).
Excellent bonding strength combined with easy application was found for universal resin cement, and thus, it is a potential alternative to acrylic bone cement in OOKP preparation.
在骨-牙-角膜-假体（OOKP）设计中，牙釉质的准备较为复杂，其耐用性和防水性非常重要。迄今为止，只有丙烯酸骨水泥被用于将光学筒与牙本质粘合。我们的目的是评估不同的牙科粘合剂在 OOKP 制备中的应用。
通过制备厚度为 1.5 毫米、带有直径为 3.5 毫米孔的牙本质片来制备牛牙标本。每组（每组 10 个标本）分别用经典的聚甲基丙烯酸甲酯（PMMA）骨水泥、通用树脂水泥或玻璃离子体水泥进行粘合。所有标本均使用单轴牵引机进行力测量。
打破粘合所需的最高平均力值是 PMMA 骨水泥（128.2N），其次是通用树脂水泥（127.9N），但无统计学差异。玻璃离子体水泥显示出明显较低的阻力（78.1N）。
通用树脂水泥具有优异的粘合强度，且易于应用，因此是 OOKP 制备中丙烯酸骨水泥的潜在替代品。
