title: Clinical evaluation of an anterior hybrid composite resin over 8 years.
abstract: OBJECTIVE
  To evaluate the performance of an anterior hybrid composite resin restorative material (Opalux).
  
  
  METHODS
  Single-centre clinical trial.
  
  
  METHODS
  Scores were obtained based on USPHS criteria for marginal adaptation, anatomic form, colour match, surface roughness and marginal discolouration.
  
  
  METHODS
  The restorative material was evaluated in suitable cavities in 24 patients (12 male, 12 female). Ethical permission and consent were obtained.
  
  
  METHODS
  Baseline data was collected on 44 restorations (25 Class III, 3 Class IV, 16 Class V) and reviewed independently by two of the three clinicians who contributed to the study who then reached a consensus score. Restorations were reviewed and scored in the same way at 3 months and 1, 2, 3 and 8 years.
  
  
  RESULTS
  The total number of alpha ratings at baseline and review (3 months and 1, 2, 3 and 8 years) appointments for the following parameters were: marginal adaptation (33, 28, 29, 27, 12, 17), anatomic form (39, 30, 32, 26, 17, 15), surface roughness (34, 26, 24, 23, 11, 4), colour match (24, 25, 26, 24, 15, 12) and marginal discolouration (39, 31, 30, 25, 10, 9). The incidence of secondary caries was very low. Life table analysis suggests a 73% survival, with no scores below B, at 8 years.
  
  
  CONCLUSIONS
  The majority of these restorations continued to perform satisfactorily. Although this particular material is no longer available, these results may be applicable to currently available similar materials.
authors.affiliation: Department of Conservative Dentistry, King's Dental Institute, London.
authors.forename: B J
authors.initials: BJ
authors.lastname: Millar
authors.forename: P B
authors.initials: PB
authors.lastname: Robinson
authors.forename: A T
authors.initials: AT
authors.lastname: Inglis
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003188:Composite Resins / Q000009:adverse effects / Q000737:chemistry; D003481:Cuspid; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D003807:Dentin Sensitivity / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007180:Incisor; D008297:Male; D008689:Methacrylates / Q000009:adverse effects / Q000737:chemistry; D008875:Middle Aged; D017060:Patient Satisfaction; D011140:Polyurethanes / Q000009:adverse effects / Q000737:chemistry; D017797:Prosthesis Coloring; D013499:Surface Properties; D016896:Treatment Outcome
chemical_list: D003188:Composite Resins; D008689:Methacrylates; D011140:Polyurethanes; C029824:urethane dimethacrylate luting resin