IADR Abstract Archives
Atraumatic Restorative Treatment as a Restorative Option for Molar-incisor Hypomineralization
Objectives: The aim of this study was to determine the effectiveness of the Atraumatic Restorative Treatment (ART) in treating first permanent molars affected by molar-incisor hypomineralization (MIH).
Methods: An epidemiological survey conducted in Paranoá, a deprived community in Brazil, in 1971 schoolchildren using the EAPD criteria identified 196 individuals as presenting MIH. From this total, 45 schoolchildren presenting severe MIH molars associated to carious dentine lesions without pulp involvement were included in this trial. Treatments were performed by one trained dentist using the ART approach at school premises. A glass hybrid restorative system (Equia Forte, GC®) was used. Treatments were evaluated after 6 months by an independent examiner using the ART criteria. Data analysis involved descriptive statistics and conditional logistic regression [P≤0.05; 95% confidence interval (95% CI)].
Results: A total of 58 teeth were treated in 20 (44%) girls and 25 (55%) boys with a mean age of 10.55 (±1.28) years. In regard to the extension of the restorations, 46% of them involved one surface, 35% two and 18% more than two surfaces. Only 4 teeth required the use of local anaesthesia. A survival rate of 94.82% was observed, as only three (5.17%) restorations failed. Age, gender, tooth, number of surfaces and cavity size were included on the multivariate analysis. None of the independent variables was considered significant in the modelling (p>0.05) except 'number of surfaces', as all failures occurred in restorations of two or more surfaces.
Conclusions: From this preliminary data, it is possible to conclude that the ART approach showed to be an effective treatment to preserve tooth structures of permanent molars affected by MIH. Restorations with two or more surfaces had a higher chance to fail.
Methods: An epidemiological survey conducted in Paranoá, a deprived community in Brazil, in 1971 schoolchildren using the EAPD criteria identified 196 individuals as presenting MIH. From this total, 45 schoolchildren presenting severe MIH molars associated to carious dentine lesions without pulp involvement were included in this trial. Treatments were performed by one trained dentist using the ART approach at school premises. A glass hybrid restorative system (Equia Forte, GC®) was used. Treatments were evaluated after 6 months by an independent examiner using the ART criteria. Data analysis involved descriptive statistics and conditional logistic regression [P≤0.05; 95% confidence interval (95% CI)].
Results: A total of 58 teeth were treated in 20 (44%) girls and 25 (55%) boys with a mean age of 10.55 (±1.28) years. In regard to the extension of the restorations, 46% of them involved one surface, 35% two and 18% more than two surfaces. Only 4 teeth required the use of local anaesthesia. A survival rate of 94.82% was observed, as only three (5.17%) restorations failed. Age, gender, tooth, number of surfaces and cavity size were included on the multivariate analysis. None of the independent variables was considered significant in the modelling (p>0.05) except 'number of surfaces', as all failures occurred in restorations of two or more surfaces.
Conclusions: From this preliminary data, it is possible to conclude that the ART approach showed to be an effective treatment to preserve tooth structures of permanent molars affected by MIH. Restorations with two or more surfaces had a higher chance to fail.