Methods: 61 patients (18-23 years) with high caries risk , were enrolled. Inclusion criteria were: DMFT index ≥ 3, diagnosis of primary caries into dentin on 1-4 posterior proximal surfaces. Diagnosis was confirmed by existing radiograph. Filling material was randomly assigned to patients: compomer (N=31) and resin composite(N=30). Two independent calibrated teams of dentists (Clinic of Conservative Dentistry and Periodontology, Poznan University of Medical Sciences) treated the patients. Digital photographs of operation area were taken before and after cavity preparation, and after restoration. Impression of adjacent surface was taken after cavity preparation. X-rays were taken after treatment. Follow-up visits took place one week and two years after treatment. First recall was done in 61 patients, 2-year recall included in 41 patients (23: compomer; 18: composite resin). Two dentists, non-operators, independently evaluated caries presence by visual examination and infra-red laser (Diagnodent), quality of restoration and tooth integrity; followed by digital photograph and x-ray. Clinical performance data of both groups were compared and statistically analysed.
Results: Visual and laser-aided caries detection showed no difference. After two years, caries incidence in both groups had not changed. Clinical performance of both materials was excellent.
Conclusions: There was no difference in caries incidence between compomer and composite resin groups after two years of intra-oral service. All evaluated fillings fulfilled the highest criteria. Longterm follow-up of caries incidence in this caries-prone patient group is warranted. Sponsored in part by DENTSPLY-DeTrey (Germany).