Selective Adhesive Luting (SAL) is a hybrid technique for universal resin cements. It entails the application of a universal adhesive system only on easily accessible abutment surfaces, enabling simultaneous adhesive and self-adhesive luting in different portions of the abutment. A description of this novel technique and scientific evidence for the achieved effects is provided in this article authored by Prof. Breschi and colleagues from the University of Bologna. Its title:“Selective adhesive luting: A novel technique for improving adhesion achieved by universal resin cements”.

A VERSATILE RESIN CEMENT

PANAVIA™ SA Cement Universal is a universal resin cement that may be applied in the self-adhesive mode – without any additional components – in many clinical situations. It even offers great bonding performance to lithium disilicate without the need for a separate bottle of silane. In-vitro studies have shown that the resin cement is moisture tolerant and versatile, establishing a strong and durable bond to virtually all kinds of restorative materials as well as to enamel and dentin.

ENHANCING THE BONDING PERFORMANCE

On the side of the tooth, however, the best possible bonding performance is obtained by applying CLEARFIL™ Universal Bond Quick as a separate tooth primer. Hence, you may want to settle for this two-component adhesive luting technique in particularly challenging situations. It is still less complex than traditional adhesive luting and produces excellent outcomes.

MOISTURE SENSITIVITY AND WORKING FIELD CONSIDERATIONS

To function properly, however, universal adhesives need a completely dry working field, while self-adhesive resin cements are less sensitive to moisture. Thus, you might wonder which technique is best suited if you need the strongest possible chemical bond to enamel and dentin, but proper isolation with rubber dam is challenging or impossible – for example, because the abutment is short or the preparation margin is in a subgingival position. The solution in this case is termed Selective Adhesive Luting.

Selective application of a universal adhesive to those areas of etched enamel that are not at risk of being contaminated by moisture.