Adhesive dentistry is based on the development of materials which establish an effective bond with the tooth tissues. In this
context, adhesive systems have attracted considerable research interest in recent years. Successful adhesive bonding depends on the
chemistry of the adhesive, on appropriate clinical handling of the material as well as on the knowledge of the morphological changes
caused on dental tissue by different bonding procedures.
This paper outlines the status of contemporary adhesive systems, with particular emphasis on chemical characteristics and mode of interaction
of the adhesives with enamel and dentinal tissues.
Dental adhesives are used for several clinical applications and they can be classified based on the clinical regimen in “etch-and-rinse adhesives”
and “self-etch adhesives”. Other important considerations concern the different anatomical characteristics of enamel and dentine
which are involved in the bonding procedures that have also implications for the technique used as well as for the quality of the bond.
Etch-and-rinse adhesive systems generally perform better on enamel than self-etching systems which may be more suitable for bonding
In order to avoid a possible loss of the restoration, secondary caries or pulp damage due to bacteria penetration or due to cytotoxicity effects
of eluted adhesive components, careful consideration of several factors is essential in selecting the suitable bonding procedure and
adhesive system for the individual patient situation .
Keywords: Dental adhesive, enamel, dentine, composite resin, phosphoric acid, tooth tissues, secondary caries, pulp damage, bacteria, cytotoxicity.
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