Short-term retentive values of zirconium oxide posts cemented with glass ionomer and resin cement: an in vitro study and a case report.
OBJECTIVE
This paper presents the results of an investigation focusing on the retention of all-ceramic posts. The aim of the study was to evaluate the influence of two luting agents--a glass-ionomer cement (Ketac Cem) and a resin cement (Panavia F)--on the retention of a prefabricated ceramic post (Cerapost) after different pretreatment techniques in vitro.


METHODS
Forty freshly extracted incisors and canines were treated endodontically. The root canals were filled with laterally condensed gutta-percha and sealer. The teeth were assigned to 1 of 4 groups, each containing 10 specimens: sandblasted/nonsandblasted post cemented with glass-ionomer cement and sandblasted/nonsandblasted post cemented with resin cement. Tensile tests were carried out. The specimens were also quantitatively analyzed under a scanning electron microscope.


RESULTS
The retentive strengths of posts, sandblasted and nonsandblasted, and cemented with Panavia F resin cement, were significantly increased as compared to those cemented with Ketac Cem.


CONCLUSIONS
Both the luting agent and the post-surface pretreatment had a significant influence on the retention of the ceramic post.
Gernhardt
Christian R
CR
Department of Operative Dentistry and Periodontology, Martin Luther University Halle-Wittenberg, Halle, Germany. christian.gernhardt@medizin.uni-halle.de
Bekes
Kartin
K
Schaller
Hans-Günter
HG
D000328:Adult; D003722:Dental Alloys / Q000627:therapeutic use; D003738:Dental Cements / Q000737:chemistry*; D017268:Dental Prosthesis Retention / Q000379:methods*; D006801:Humans; D008277:Magnesium Oxide / Q000737:chemistry*; D008297:Male; D011076:Polycarboxylate Cement / Q000737:chemistry*; D011176:Post and Core Technique; D019279:Resin Cements / Q000737:chemistry*; D014082:Tooth Fractures / Q000628:therapy*; D015034:Zinc Oxide / Q000737:chemistry*; D015040:Zirconium / Q000627:therapeutic use
D003722:Dental Alloys; D003738:Dental Cements; C438843:Panavia-Fluoro; D011076:Polycarboxylate Cement; D019279:Resin Cements; D008277:Magnesium Oxide; C040235:Ketac-cem; D015040:Zirconium; C028541:zirconium oxide; D015034:Zinc Oxide