title: Two-year evaluation of a new nano-ceramic restorative material.
abstract: The purpose of this prospective study was to evaluate the clinical performance of a new restorative material (Ceram.X) in combination with a new primer-adhesive (K-0127). One operator placed two Class I or II restorations in molars of 43 patients. One molar was restored with Ceram.X/K-0127, the other one with Tetric Ceram/Syntac Classic. At baseline, after 1 and 2 years, the restorations were evaluated by one evaluator using modified Ryge's criteria. After 2 years, 31 patients were examined. One Ceram.X-restoration had to be removed for root canal treatment due to pulpitis. Thus, failure rate of Ceram.X was 3.2% and of Tetric Ceram, 0%. In both groups, no sensitivity, no recurrent caries, and no changes in surface texture were recorded after 2 years. One restoration in each group showed slight changes in color stability (score B). Marginal discoloration (score B) was found concerning three Ceram.X-restorations (10.0%) and two Tetric Ceram-restoration (6.5%). Marginal integrity was score B for four Ceram.X-restorations (13.3%) and for four Tetric Ceram-restorations (12.9%). No statistically significant differences were found (p>0.05). After 2 years of clinical service, 96.8% of Ceram.X/K-0127 and 100% of Tetric Ceram/Syntac Classic restorations were in place and performed clinically well.
authors.affiliation: Department of Operative Dentistry and Periodontology, Albert-Ludwigs-University of Freiburg, Freiburg, Germany. joerg.schirrmeister@uniklinik-freiburg.de
authors.forename: J F
authors.initials: JF
authors.lastname: Schirrmeister
authors.forename: K
authors.initials: K
authors.lastname: Huber
authors.forename: E
authors.initials: E
authors.lastname: Hellwig
authors.forename: P
authors.initials: P
authors.lastname: Hahn
mesh_terms: D002516:Ceramics / Q000737:chemistry; D003188:Composite Resins; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D003776:Dental Porcelain / Q000737:chemistry; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D049329:Nanostructures; D063225:Organically Modified Ceramics; D011446:Prospective Studies; D012821:Silanes; D020002:tert-Butyl Alcohol
chemical_list: C520091:CeramX; D003188:Composite Resins; D003738:Dental Cements; C514716:K-0127 dental adhesive; D063225:Organically Modified Ceramics; D012821:Silanes; D003776:Dental Porcelain; D020002:tert-Butyl Alcohol