Two-year clinical trial of a universal adhesive in total-etch and self-etch mode in non-carious cervical lesions.
OBJECTIVES
To compare the clinical performance of Scotchbond™ Universal Adhesive used in self- and total-etch modes and two-bottle Scotchbond™ Multi-purpose Adhesive in total-etch mode for Class 5 non-carious cervical lesions (NCCLs).


METHODS
37 adults were recruited with 3 or 6 NCCLs (>1.5mm deep). Teeth were isolated, and a short cervical bevel was prepared. Teeth were restored randomly with Scotchbond Universal total-etch, Scotchbond Universal self-etch or Scotchbond Multi-purpose followed with a composite resin. Restorations were evaluated at baseline, 6, 12 and 24 months for marginal adaptation, marginal discoloration, secondary caries, and sensitivity to cold using modified USPHS Criteria. Patients and evaluators were blinded. Logistic and linear regression models using a generalized estimating equation were applied to evaluate the effects of time and adhesive material on clinical assessment outcomes over the 24 month follow-up period. Kaplan-Meier method was used to compare the retention between adhesive materials.


RESULTS
Clinical performance of all adhesive materials deteriorated over time for marginal adaptation, and discoloration (p<0.0001). Both Scotchbond Universal self-etch and Scotchbond Multi-purpose materials were more than three times as likely to contribute to less satisfying performance in marginal discoloration over time than Scotchbond Universal total-etch. The retention rates up to 24 months were 87.6%, 94.9% and 100% for Scotchbond Multi-purpose and Scotchbond Universal self-etch and total-etch, respectively.


CONCLUSIONS
Scotchbond Universal in self- and total- etch modes performed similar to or better than Scotchbond Multipurpose, respectively.


CLINICAL SIGNIFICANCE
24 month evaluation of a universal adhesive indicates acceptable clinical performance, particularly in a total-etch mode.
['Lawson|Nathaniel C|NC|', 'Robles|Augusto|A|', 'Fu|Chin-Chuan|CC|', 'Lin|Chee Paul|CP|', 'Sawlani|Kanchan|K|', 'Burgess|John O|JO|']
D000134:Acid Etching, Dental D000269:Adhesives D003188:Composite Resins D045662:Dental Etching D018772:Dental Marginal Adaptation D019232:Dental Restoration Failure D003793:Dental Restoration, Permanent D017220:Dentin-Bonding Agents D005260:Female D006801:Humans D008297:Male D008875:Middle Aged D019279:Resin Cements D019237:Tooth Cervix
Universal adhesive Total-etch Self-etch Non-carious cervical lesion