48-Month Clinical Performance of a Restorative GLass Ionomer in NCCLs

Objectives: This randomized clinical trial assessed the efficacy of a restorative glass ionomer (GI) compared to a resin composite for the restoration of non-carious cervical lesions (NCCLs) of patients with systemic diseases over a period of 48 months.
Methods: A single clinician placed 134 restorations in 30 patients with a mean age of 61.8 years having different systemic diseases. The NCCLs were restored either with a restorative GI; Fuji Bulk (GC, Tokyo Japan) [FB] or a posterior resin composite; G-ænial Posterior (GC, Tokyo Japan) [GP] used with a universal adhesive in etch & rinse mode. All procedures followed the manufacturer’s guidelines. The restorations were evaluated for retention, marginal discoloration, marginal adaptation, secondary caries, surface texture, and post-operative sensitivity using modified United States Public Health Service (USPHS) criteria at baseline (1 week) and at 6, 12, 36 and 48 months. Chi-square and Dunn’s tests were used for statistical analysis (p<0.05).
Results: After 48 months, recall rate was 60%. Seven (18.4%) FB and 4 (13.3%) GP restorations lost retention (p>0.05). There was not any significant difference between the survival rates of FB (82.1%) and GP (89.3%). When compared to baseline, significant changes were observed in marginal adaptation, marginal discoloration and surface texture of both FB and GP restorations (p<0.05). However, no significant difference was seen between the groups at any evaluation periods (p>0.05).
Conclusions: The restorative GI and the resin composite demonstrated acceptable clinical performances in treating NCCLs of patients with systemic diseases after 48 months.