title: Direct posterior composite restorations with a new adhesive system: one-year results.
abstract: OBJECTIVE
  Syntac Sprint is a new one-bottle adhesive based on the total-etch and total-bond technique. The aim of this study was to compare the new restorative system consisting of Syntac Sprint and the resin composite Tetric Ceram with the clinically proven combination of the dentin adhesive Syntac Classic and the resin composite Tetric.
  
  
  METHODS
  In a controlled prospective clinical study, 47 cavities (36 premolars, 11 molars; 29 maxillary, 17 mandibular; 6 occlusal, 33 occluso-approximal, 7 MOD, 1 > 3 surfaces) in 33 patients (17 female, 16 male) were filled. Twenty-five fillings were placed with the combination Syntac Sprint/Tetric Ceram under total etching and total bonding conditions. In thirteen restorations, Syntac Sprint was precured prior to the application of the resin composite; in the other twelve cases, restoration and adhesive were cured simultaneously. The control group consisted of 22 cavities restored with Syntac Classic plus the composite Tetric. At baseline and after 6 and 12 months, two calibrated investigators examined the restorations with modified USPHS codes and criteria.
  
  
  RESULTS
  The criteria marginal integrity and integrity of the tooth deteriorated significantly between the baseline and the 6- and 12-month investigations (Friedman 2-way ANOVA; p < 0.05). No differences were found in the criteria surface roughness, color matching, anatomic form, step formation, integrity of the filling, proximal contact, hypersensitivity, or satisfaction. After one year, all fillings were in good condition. There was no significant difference between the Syntac Sprint/Tetric Ceram and Syntac Classic/Tetric groups for any criterion (Kruskal-Wallis; p > 0.05).
  
  
  CONCLUSIONS
  Within the limits of this study, Tetric Ceram fillings in combination with Syntac Sprint were clinically successful after one year.
authors.affiliation: Clinic for Operative Dentistry and Periodontology, University of Erlangen-Nuremberg, Glueckstrasse 11, D-91054 Erlangen, Germany. schoch@dent.uni-erlangen.de
authors.forename: M
authors.initials: M
authors.lastname: Schoch
authors.forename: N
authors.initials: N
authors.lastname: Krämer
authors.forename: R
authors.initials: R
authors.lastname: Frankenberger
authors.forename: A
authors.initials: A
authors.lastname: Petschelt
mesh_terms: D000179:Acrylates; D000328:Adult; D000704:Analysis of Variance; D001641:Bicuspid; D003188:Composite Resins; D003793:Dental Restoration, Permanent / Q000379:methods*; D017220:Dentin-Bonding Agents; D005260:Female; D006801:Humans; D008297:Male; D008298:Maleates; D008963:Molar; D011446:Prospective Studies; D019279:Resin Cements; D018709:Statistics, Nonparametric
chemical_list: D000179:Acrylates; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008298:Maleates; D019279:Resin Cements; C443859:Syntac Sprint; C078484:Syntac dentine adhesive; C090969:Tetric; C040415:heliobond