In vivo dentin microhardness beneath a calcium-phosphate cement.
A minimally invasive caries-removal technique preserves potentially repairable, caries-affected dentin. Mineral-releasing cements may promote remineralization of soft residual dentin. This study evaluated the in vivo remineralization capacity of resin-based calcium-phosphate cement (Ca-PO(4)) used for indirect pulp-capping. Permanent carious and sound teeth indicated for extraction were excavated and restored either with or without the Ca-PO(4) base (control), followed by adhesive restoration. Study teeth were extracted after 3 months, followed by sectioning and in vitro microhardness analysis of the cavity floor to 115-microm depth. Caries-affected dentin that received acid conditioning prior to Ca-PO(4) basing showed significantly increased Knoop hardness near the cavity floor. The non-etched group presented results similar to those of the non-treated group. Acid etching prior to cement application increased microhardness of residual dentin near the interface after 3 months in situ.
University of Michigan, Department of Cariology, Restorative Sciences and Endodontics, Ann Arbor, MI, USA.
E
E
Bresciani
W C
WC
Wagner
M F L
MF
Navarro
S H
SH
Dickens
M C
MC
Peters
D000134:Acid Etching, Dental; D002130:Calcium Phosphates / Q000008:administration & dosage*; D003785:Dental Pulp Capping / Q000379:methods*; D003804:Dentin / Q000502:physiology*; D006244:Hardness; D006801:Humans; D019279:Resin Cements / Q000737:chemistry*; D014089:Tooth Remineralization / Q000379:methods*
D002130:Calcium Phosphates; D019279:Resin Cements; C020243:calcium phosphate