Adsorption of N-phenylglycine on hydroxyapatite: role in the bonding procedure of a restorative resin to dentin.
Adsorption of N-phenylglycine on hydroxyapatite: role in the bonding procedure of a restorative resin to dentin.
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N-苯基甘氨酸在羟基磷灰石上的吸附：在修复树脂与牙本质的粘合过程中的作用。
DOI：
10.1002/jbm.820211105
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Johnston,AD
中科院分区：
文献类型：
--
作者：
Misra,DN;Johnston,AD
研究了N-苯甘氨酸（NPG）在羟基磷灰石（HA）表面的吸附行为，探讨了NPG在修复树脂与牙本质粘接过程中的作用。N-苯甘氨酸在乙醇（99.8%）中的吸附等温线是可逆的（和朗缪尔式）。在最大吸附时，被吸附分子的苯环平放在表面上，羧酸氧和氨基氮锚定在表面上。N-苯基甘氨酸用作胺促进剂，因为含过氧化物的单体与吸附物覆盖的磷灰石聚合。该复合材料的径向拉伸强度与未处理磷灰石填充的复合材料的径向拉伸强度大致相等。讨论了影响粘接强度的各种因素在粘接过程中的作用。
The adsorption ofN‐phenylglycine (NPG) onto synthetic hydroxyapatite from ethanol solutions was studied to elucidate the role of surface‐active moieties in determining the character of adsorption, and to explore the role of NPG in a bonding procedure of restorative resin to dentin. The adsorption isotherm ofN‐phenylglycine is reversible (and Langmuirian) from ethanol (99.8%). At maximum adsorption the phenyl rings of the adsorbed molecules lie flat on the surface and the carboxylate oxygens and amino nitrogens are anchored to the surface. TheN‐phenylglycine serves as an amine accelerator since the peroxide containing monomer polymerizes with the adsorbate‐covered apatite. The diametral tensile strength of this composite is approximately equal to the composite filled with untreated apatite. The role of various factors contributing to adhesive strength in the bonding procedure is also discussed.