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[The problem of tooth hypersensitivity following the placement of acid-etch retained inlays].

Placement of 225 resin or ceramic inlays using the acid etch technique resulted in post-operative pain of the tooth in 16.1% of the cases. The hypersensitivity decreased in most cases within 4 to 8 weeks, 8 inlays had to be removed. Teeth with bases of phosphate cement showed similar results as those with glass ionomer cement. Possible reasons for post-operative hypersensitivity include etching the base, polymerization shrinkage and marginal gaps and, first of all, etching the dentin.