Tooth-colored filling materials for the restoration of cervical lesions: A24-month follow-up study

The recently developed resin-modified glass ionomer cements and the polyaci d-modified composites are promising alternatives to conventional materials for restoring cervical defects. This clinical study evaluated the clinical condition of cervical fillings 24 months following placement. The study sub jects were 197 cervical restorations placed on incisors, canines and premol ars in 37 patients for restoration of erosion/non-carious lesions (69 cases ), primary carious lesions (57 cases) and the replacement of deficient rest orations (71 cases). The teeth were randomly divided into four groups for r estoration with either Tetric (composite, Group A: n=36), Dyract (compomer, Group B: n=79), Fuji II LC (resin-modified glass ionomer cement, Group C: n=51) or Photac-Fil (resin-modified glass ionomer cement, Group D: n=31). T he evaluation was done single-blind at baseline, 8 and 24 months after the placement of the fillings, according to a modified USPHS rating scale. The assessment criteria were color stability, anatomical form, surface texture, marginal integrity, marginal discoloration and loss of filling. Statistica l analysis was completed using Pearson chisquare and Fisher's exact test at a significance level of 5% (p<0.05). After the 24-month period, the compos ite restorations showed superior results. The compomer fillings demonstrate d conditions that were only slightly worse. A substantial number of the res in-modified glassionomer fillings were evaluated with brave or even charlie scores in respect to at least one of the criteria assessed.