In this prospective, blind, a cohort of 19 children between 3-10 years (mean 5.6), both sexs, with 65 primary molars (including open carious lesions) were evaluated at baseline, 6 and 12 months after restorations were made. Informed consent from the parents was obtained. Restorations formed two study groups: Group A: Glass Ionomer Cement (Ketac-Molar/Easymix-3MESPE-USA) and Group B: Amalgam (Logic Plus-SDI-Australia). A calibrated examiner (Kappa 0.714), assessed restorations directly (visual-tactile), by standardized radiographs and digital photographs through USPH/Ryge criteria on seven parameters (marginal adaptation, anatomy, roughness, mass stain, stain Marginal, Contacts and Sensitivity.
Results:
Expressed in percentage of alpha value, separated by group and parameter.
ART
Marginal Mass Marginal
Adaptation Anatomy Contact Stain Stain Roughness Sensitivity
P p<0.05 - p<0.05 - - - -
Base
line 6.3% 42.9% 60% No No 69.8% 100%
Comparable comparable
6
month 9.5% 38.1% 22.6% No No 57.1% 100%
comparable comparable
12
month 16.7% 44.1% 7.4% No No 52.9% 100%
comparable comparable
Amalgam
Marginal Mass Marginal
Adaptation Anatomy Contact Stain Stain Roughness Sensitivity
P p<0.05 - p<0.05 - - - -
Base
line 28.6% 35.7% 92.9% No No
comparables comparables 42.9% 100%
6
month 0% 8.3% 41.6% No No 41.7% 83.3%
comparables comparables
12
month 0 % 14.3% 0% No No 28.6% 100%
comparables comparables
Conclusion: In amalgam restorations, marginal adaptation showed rapid downgrade, contact presented significant downgrade in both groups. (p<0.05)