title: The Retentive Strength of Cemented Zirconium Oxide Crowns after Dentin Pretreatment with Desensitizing Paste Containing 8% Arginine and Calcium Carbonate.
abstract: The effect of dentin pretreatment with Desensitizing Paste containing 8% arginine and calcium carbonate on the retention of zirconium oxide (Y-TZP) crowns was tested. Forty molar teeth were mounted and prepared using a standardized protocol. Y-TZP crowns were produced using computer-aided design and computer-aided manufacturing (CAD-CAM) technology. The 40 prepared teeth were either pretreated with Desensitizing Paste or not pretreated. After two weeks, each group was subdivided into two groups, cemented with either Resin Modified Glass Ionomer Cement (RMGIC) or Self Adhesive Resin Cement (SARC)). Prior to cementation, the surface areas of the prepared teeth were measured. After aging, the cemented crown-tooth assemblies were tested for retentive strength using a universal testing machine. The debonded surfaces of the teeth and crowns were examined microscopically at 10× magnification. Pretreating the dentin surfaces with Desensitizing Paste prior to cementation did not affect the retention of the Y-TZP crowns. The retentive values for RMGIC (3.04 ± 0.77 MPa) were significantly higher than those for SARC (2.28 ± 0.58 MPa). The predominant failure modes for the RMGIC and SARC were adhesive cement-dentin and adhesive cement-crown, respectively. An 8.0% arginine and calcium carbonate in-office desensitizing paste can be safely used to reduce post-cementation sensitivity without reducing the retentive strength of Y-TZP crowns.
authors.affiliation: Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv 6997801, Israel. rafipilo@post.tau.ac.il.
authors.forename: Raphael
authors.initials: R
authors.lastname: Pilo
authors.affiliation: Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv 6997801, Israel. noga.hrl@gmail.com.
authors.forename: Noga
authors.initials: N
authors.lastname: Harel
authors.affiliation: Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv 6997801, Israel. nissandr@gmail.com.
authors.forename: Joseph
authors.initials: J
authors.lastname: Nissan
authors.affiliation: Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv 6997801, Israel. shifralevartov@gmail.com.
authors.forename: Shifra
authors.initials: S
authors.lastname: Levartovsky
mesh_terms: D001120:Arginine / Q000737:chemistry / Q000494:pharmacology*; D002119:Calcium Carbonate / Q000737:chemistry / Q000494:pharmacology*; D017076:Computer-Aided Design; D003442:Crowns; D003738:Dental Cements / Q000737:chemistry*; D003804:Dentin / Q000187:drug effects* / Q000378:metabolism; D006801:Humans; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements / Q000737:chemistry; D013718:Tensile Strength; D013997:Time Factors; D015040:Zirconium / Q000737:chemistry*
chemical_list: D003738:Dental Cements; D019279:Resin Cements; C095998:Adhesive cement; D001120:Arginine; D015040:Zirconium; D002119:Calcium Carbonate; C028541:zirconium oxide
keywords: Y-TZP; cements; dentin; desensitizing paste; retention