title: The effect of different surface treatments on cement-retained implant-supported restorations.
abstract: The purpose of this study was to evaluate the effects of the various surface treatment methods on the retention of single crowns on implant abutments. The study included 50 single crowns that were cemented with adhesive resin cement onto the ITI solid abutments. The specimens were randomly divided into 5 groups, each including 10 specimens according to the following surface treatments: group C, control, abutments remained unaltered as control; group L, etching with CO(2) laser; group SB, sandblasting with 50-μm Al(2)O(3); group MS: coating with titanium nitride (TiAlN) with a radiofrequency magnetron sputtering system; and group SP, silicoating by Silano-Pen. After the surface treatment procedures were finished, the casted crowns were cemented onto the abutments, and thermocycling was applied to simulate oral environment. The uniaxial tensile force was applied to all test crowns using a universal test machine (Instron) with a crosshead speed of 0.5 mm/min. The load required to dislodge each crown was recorded in Newton. The lowest tensile bond strength values were obtained with group MS (223.26 ± 14.30 N) and significantly differ from all other groups except group C. Group SB showed highest test results (506.02 ± 18.04 N) and differs from other groups (P < .05). The test values that were obtained in group MS-group C did not show significant differences (P > .05). Sandblasting is an effective method to increase bond strength. Also, Silano-Pen and laser application is advisable for increasing the crown retention to abutments. Titanium aluminum nitride coating with magnetron sputtering technique seems to be ineffective.
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, University of Ondokuz Mayis, Turkey-Samsun. muratk@omu.edu.tr
authors.forename: Murat
authors.initials: M
authors.lastname: Kurt
authors.forename: Tolga
authors.initials: T
authors.lastname: Külünk
authors.forename: Cağrı
authors.initials: C
authors.lastname: Ural
authors.forename: Şafak
authors.initials: Ş
authors.lastname: Külünk
authors.forename: Şengül
authors.initials: Ş
authors.lastname: Danişman
authors.forename: Soner
authors.initials: S
authors.lastname: Savaş
mesh_terms: D020906:Air Abrasion, Dental; D000704:Analysis of Variance; D003442:Crowns; D000044:Dental Abutments; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements; D045662:Dental Etching; D017268:Dental Prosthesis Retention / Q000379:methods*; D019094:Dental Prosthesis, Implant-Supported; D003799:Dental Stress Analysis; D006801:Humans; D012821:Silanes; D013499:Surface Properties; D013718:Tensile Strength; D014025:Titanium
chemical_list: D003738:Dental Cements; D012821:Silanes; C041500:titanium nitride; D014025:Titanium