Using standard surface chemical techniques it can be demonstrated that under physiological conditions, the adhesive properties of human enamel and dentine are created by the volumetrically small organic portion of these tissues. As far as their adhesiveness is concerned undamaged teeth therefore do not differ considerably from other types of biological tissues. Generally speaking the presence of low energy, organic films will act to prevent formation of strong adhesive contacts between tooth surfaces and e.g. bacteria, food stuffs or restorative materials. By certain types of direct surface treatments the adhesiveness of tooth surfaces can be changed temporarily or permanently in ways that will either increase or decrease the chances to obtain strong adhesive contacts. Under physiological conditions teeth are covered with rapidly forming salivary films which reduces the possibility to obtain strong adhesive contacts with teeth. If clinically useful adhesion to tooth surfaces is to be obtained the teeth involved must therefore be kept isolated from saliva during the operative procedures.
使用标准的表面化学技术可以证明，在生理条件下，人类牙釉质和牙本质的粘附特性是由这些组织中体积较小的有机部分产生的。就其粘附性而言，未受损的牙齿与其他类型的生物组织并没有太大差异。一般来说，低能量有机膜的存在会阻止牙齿表面与例如细菌、食物或修复材料之间形成强粘附接触。通过某些类型的直接表面处理，牙齿表面的粘附性可以暂时或永久改变，从而增加或减少获得强粘附接触的机会。在生理条件下，牙齿覆盖着快速形成的唾液膜，这降低了与牙齿获得强粘附接触的可能性。因此，如果要在临床上获得对牙齿表面有用的粘附力，在手术过程中必须使相关牙齿与唾液隔离。
