Direct pulp capping with an auto-cured sealant resin and a self-etching primer.
OBJECTIVE
To evaluate an auto-cured resin as a direct pulp capping material on exposed pulp with or without a self-etching primer.


METHODS
Class V cavities were prepared on the facial surfaces of 90 intact monkey teeth, and the pulps were intentionally exposed with a carbide bur through the cavity floor. Each exposed pulp was capped with a commercially available adhesive resin system (Clearfil Liner Bond 2V: Group LB) or an auto-cured sealant resin (Teethmate-S) with and without the use of a self-etching primer (Group TMP and Group TM, respectively). The cavities were restored with an adhesive resin and a hybrid resin-based composite (Clearfil AP-X). Inflammatory cell infiltration and dentin bridge formation of the exposed pulp as well as protrusion of the exposed pulp tissue into the cavities were evaluated histologically at 3, 30 and 90 days.


RESULTS
Slight inflammatory cell infiltration was the main inflammatory reaction of the exposed pulp, and the exposed area became occluded with dentin bridges as the observation period increased. However, significantly higher incidence of slight inflammatory cell infiltration was found in Group TM than in Group LB at 30 days (P<0.05). Group TM showed significantly higher incidence of protrusion of pulp tissue than Groups LB and TMP through all tested periods (P<0.05).
Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, 5-45 Yushima 1-chome, Bunkyo-ku, Tokyo 113-8549, Japan. arakawa@hiroshima-u.ac.jp
Makoto
M
Arakawa
Yuichi
Y
Kitasako
Masayuki
M
Otsuki
Junji
J
Tagami
D000134:Acid Etching, Dental; D000818:Animals; D001672:Biocompatible Materials / Q000494:pharmacology* / Q000627:therapeutic use; D003188:Composite Resins / Q000494:pharmacology; D003738:Dental Cements / Q000494:pharmacology*; D003782:Dental Pulp / Q000187:drug effects* / Q000473:pathology; D003785:Dental Pulp Capping / Q000009:adverse effects / Q000379:methods*; D003789:Dental Pulp Exposure / Q000628:therapy; D003809:Dentin, Secondary / Q000187:drug effects; D005069:Evaluation Studies as Topic; D000882:Haplorhini; D007249:Inflammation / Q000473:pathology; D008422:Materials Testing; D008689:Methacrylates / Q000494:pharmacology; D010895:Pit and Fissure Sealants / Q000494:pharmacology*; D013718:Tensile Strength
D001672:Biocompatible Materials; C112828:Clearfil AP-X; C112274:Clearfil Liner Bond 2; D003188:Composite Resins; D003738:Dental Cements; D008689:Methacrylates; D010895:Pit and Fissure Sealants