title: Two-year clinical evaluation of a packable resin-based composite.
abstract: BACKGROUND
  Packable resin-based composites were introduced in 1998, but few clinical studies have been conducted to evaluate them. The authors conducted a clinical study to determine the two-year performance of SureFil (Dentsply DeTrey GmbH, Konstanz, Germany) packable posterior resin-based composite in Class I and II restorations.
  
  
  METHODS
  An operator (L.S.T.) restored 55 cavities in 36 patients (16 Class I restorations and 39 Class II restorations). After cavity preparation, she etched the enamel with 34 percent phosphoric acid, applied Prime & Bond NT (Dentsply DeTrey GmbH) to dentin and etched enamel for 20 seconds and then cured it for 20 seconds. She restored the cavity using 3- to 5-millimeter increments of SureFil. Independent examiners assessed the restorations after placement and at six months, one year and two years for color matching, marginal discoloration, marginal adaptation, secondary caries, surface texture, anatomical form and postoperative sensitivity, using the Ryge criteria.
  
  
  RESULTS
  The authors assessed the changes in the parameters during the two-year period using a software program with Friedman test analysis with a Bonferroni adjustment at significant level of P = .05. At baseline, 31 restorations were graded as Bravo for color match. At the six-month and one-year recall periods (n = 55), 53 restorations remained unchanged. Two restorations from the same patient fell out after one month. After two years (n = 50), there were five Bravos for surface staining and three for marginal adaptation (P < .05).
  
  
  CONCLUSIONS
  After two years of clinical service, SureFil packable resin-based composite had a success rate of 96 percent, and the authors considered it successful in Class I and II restorations.
  
  
  CONCLUSIONS
  SureFil packable resin-based composite can be successful in clinical situations with limited-sized cavities and proper application of restorative techniques.
authors.affiliation: Department of Restorative Dentistry and Endodontics, Ege University, School of Dentistry, Izmir, Turkey. sebnemturkun@hotmail.com
authors.forename: L Sebnem
authors.initials: LS
authors.lastname: Türkün
authors.forename: Murat
authors.initials: M
authors.lastname: Türkün
authors.forename: Ferit
authors.initials: F
authors.lastname: Ozata
mesh_terms: D000134:Acid Etching, Dental; D000704:Analysis of Variance; D003116:Color; D003188:Composite Resins / Q000737:chemistry; D003731:Dental Caries / Q000145:classification; D003737:Dental Cavity Preparation; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000145:classification; D003807:Dentin Sensitivity / Q000145:classification; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010756:Phosphoric Acids / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D013499:Surface Properties; D016896:Treatment Outcome
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D010756:Phosphoric Acids; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; C403464:SureFil packable composite