OBJECTIVE: To evaluate the survival over five years of Class V restorations placed by UK general practitioners, and to identify factors associated with increased longevity. DESIGN: Prospective longitudinal cohort multi-centre study. SETTING: UK general dental practices. MATERIALS AND METHOD: Ten general dental practitioners each placed 100 Class V restorations of varying sizes, using a range of materials and recorded selected clinical information at placement and recall visits. After five years the data were analysed using the Kaplan-Meier method, log-rank tests and Cox regressions models to identify significant associations between the time to restoration failure and different clinical factors. RESULTS: After five years 275/989 restorations had failed (27.8%), with 116 (11.7%) lost to follow-up. Cox regression analysis identified that, in combination, the practitioner, patient age, cavity size, moisture contamination and cavity preparation were found to influence the survival of the restorations. CONCLUSIONS: At least 60.5% of the restorations survived for five years. The time to failure of Class V restorations placed by this group of dentists was reduced in association with the individual practitioner, smaller cavities, glass ionomer restorations, cavities which had not been prepared with a bur, moisture contamination, increasing patient age, cavities confined to dentine and non-carious cavities.
OBJECTIVE: To evaluate the survival over five years of Class V restorations placed by UK general practitioners, and to identify factors associated with increased longevity. DESIGN: Prospective longitudinal cohort multi-centre study. SETTING: UK general dental practices. MATERIALS AND METHOD: Ten general dental practitioners each placed 100 Class V restorations of varying sizes, using a range of materials and recorded selected clinical information at placement and recall visits. After five years the data were analysed using the Kaplan-Meier method, log-rank tests and Cox regressions models to identify significant associations between the time to restoration failure and different clinical factors. RESULTS: After five years 275/989 restorations had failed (27.8%), with 116 (11.7%) lost to follow-up. Cox regression analysis identified that, in combination, the practitioner, patient age, cavity size, moisture contamination and cavity preparation were found to influence the survival of the restorations. CONCLUSIONS: At least 60.5% of the restorations survived for five years. The time to failure of Class V restorations placed by this group of dentists was reduced in association with the individual practitioner, smaller cavities, glass ionomer restorations, cavities which had not been prepared with a bur, moisture contamination, increasing patient age, cavities confined to dentine and non-carious cavities.
Authors: Markus Heyder; Bernd Sigusch; Christoph Hoder-Przyrembel; Juliane Schuetze; Stefan Kranz; Markus Reise Journal: PLoS One Date: 2022-06-23 Impact factor: 3.752