A Nano-Hybrid Composite in Class V Cavities - a Two-Year Follow-up

Objectives: The aim of this study was to evaluate the clinical performance of a nano-hybrid composite in class V. Methods: A total of 122 carious and non-carious Class V lesions in 43 patients were restored with the universal light-curing nano-hybrid restorative Grandio^® in combination with light curing self-etch Futurabond NR (VOCO, Cuxhaven, Germany) following manufacturer's instructions. Clinical evaluation was performed at baseline, after 6, 12 and 24 months using modified LUTZ (1977) und RYGE criteria system (BOEHM et al. 1991). The clinical data were statistically analyzed with the BONFERRONI adjusted McNEMAR symmetrical tests. Results: After 6 months 16 restorations were lost (retention rate 86.55%), after 12 months 6 additional restorations (retention rate 81.51%) and after 24 months 2 additional restorations (retention rate 79.83%). One patient with 3 restorations dropped out during the study. There were statistically significant differences (p<a=0.05) in A-criteria (excellent) of color matching, bond zone morphology, volume behavior, surface texture and clinical acceptance only between the baseline and following examinations (table).

 

Evaluation period	Restorations         (n)	Color matching	Bond zone morphology	Volume behavior	Surface Textur	Clinical Acceptance
Baseline	122	113 A	122 A	121 A	67 A	73 A
6 months	103	86 A	97 A	91 A	40 A	52 A
12 months	97	81 A	85 A	74 A	36 A	44 A
24 months	95	75 A	67 A	64 A	37 A	39 A

Conclusions: The overall clinical performance appears to be at most acceptable and excellent up to 2 years.