Clinical evaluation of three dentine bonding agents

Three commercial dentine bonding agents were used with composite resin to restore non-undercut Class V abrasion lesions without enamel etching. Patients were reviewed at 3, 6 and 12 months and the integrity and marginal staining of restorations was assessed. The loss incidence of restorations ranged from 18 to 40 per cent at one year, and there was increasing evidence of marginal staining over the evaluation period. Comparisons are made with other commercial dentine bonding agents from previous studies in this series.     

Colour stability of composite resins: A clinical comparison

Ninety three Class III cavities were prepared in 66 patients, and restored with one of three resin-based restorative materials; a hybrid self-cure material, a microfine self-cure material, or a microfine light-cure material. Standard sets of clinical colour transparencies were used to evaluate colour match with the surrounding tooth and marginal discoloration over five years. After five years, all materials had become slightly darker, the microfine self-cure material significantly more so than the light-cure material. There was no significant development of marginal discoloration.     

The effect of dentine conditioning with polyacrylic acid on the clinical performance of glass ionomer cement — 3-year results

Forty cervical abrasion lesions were restored with a self-cure Type 2A glass ionomer cement. Prior to placement of the restorations, 20 lesions were scrubbed for 15 seconds with 25 per cent polyacrylic acid and 20 lesions were cleaned with a pumice and water slurry on a rubber cup. After three years, there was negligible marginal staining, and one restoration from each group was partly lost. There was no evidence to suggest that polyacrylic acid was preferred to pumice and water in the restoration of cervical abrasion lesions with glass ionomer cement.     

Cariostatic effect of glass ionomer cement: a five-year clinical study

Composite resin and glass ionomer cement were used to restore 67 and 65 Class V carious lesions, respectively. The restorations were assessed each year for recurrent caries and marginal staining. After five years, 1 per cent of glass ionomer and 6 per cent of composite restorations had become carious, and there was approximately twice as much marginal staining around the composite as around the glass ionomers. There appear to be significant benefits in using glass ionomer to restore Class V carious lesions.     

Correlation between fracture properties and clinical performance of composite resins in Class IV cavities

One hundred and two Class IV cavities were restored randomly with four composite resins. The restorations were assessed at six months, one year, two years and three years for surface chipping, bulk fracture and incisal wear. The data were correlated with various mechanical properties of the materials. A significant correlation was found between surface chipping/bulk fracture and fracture toughness (P = 0.002), elastic modulus (P = 0.006) and tensile strength (P = 0.045). There was a trend towards an association between incisal wear and both elastic modulus and inherent flaw size. Fracture toughness may be a useful indicator of the clinical performance of composites in Class IV cavities.     

Clinical evaluation of two materials for the bonding of composite resins to dentine: one-year results

Non-undercut Class V abrasion cavities were restored using either Creation Bond dentine bonding agent and Visar-Fil composite resin (42 cavities), or Dentin Adhesit dentine bonding agent with Silux composite (42 cavities) or Heliosit composite (31 cavities). No enamel etching was carried out. The restorations were examined after approximately one month, three months, six months and one year.
The results showed a cumulative loss rate of Creative Bond/Visar-Fil restorations of 55 per cent after one month, increasing to 96 per cent after one year. Comparative results were 52 per cent to 93 per cent for Adhesit/Silux restorations, and 23 per cent to 77 per cent for Adhesit/Heliosit restorations. Remaining restorations of all materials had varying degrees of marginal staining.     

Three-year clinical evaluation of Tenure dentine bonding agent

Twenty cervical abrasion lesions in five patients of mean age 58 years were restored with Tenure dentine bonding agent and Silux composite, without enamel etching.
The cumulative loss rates of restorations were 5 per cent, 5 per cent, and 11 per cent after 1 year, 2 years and 3 years, respectively, and there was a slight increase of marginal staining. The results are in agreement with other authors.