Two years survival rate of Class II ART restorations in primary molars using two ways to avoid saliva contamination.
OBJECTIVE
To compare the survival rates of Class II Atraumatic Restorative Treatment (ART) restorations placed in primary molars using cotton rolls or rubber dam as isolation methods.


METHODS
A total of 232 children, 6-7 years old, both genders, were selected having one primary molar with proximal dentine lesion. The children were randomly assigned into two groups: control group with Class II ART restoration made using cotton rolls and experimental group using rubber dam. The restorations were evaluated by eight calibrated evaluators (Kappa > 0.8) after 6, 12, 18 and 24 months.


RESULTS
A total of 48 (20.7%) children were considered dropout, after 24 months. The cumulative survival rate after 6, 12, 18 and 24 months was 61.4%, 39.0%, 29.1% and 18.0%, respectively for the control group, and 64.1%, 55.1%, 40.1% and 32.1%, respectively for the rubber dam group. The log rank test for censored data showed no statistical significant difference between the groups (P = 0.07). The univariate Cox Regression showed no statistical significant difference after adjusting for independent variables (P > 0.05).


CONCLUSIONS
Both groups had similar survival rates, and after 2 years, the use of rubber dam does not increase the success of Class II ART restorations significantly.
Carvalho
Thiago Saads
TS
Departamento de Clínica e Odontologia Social, Universidade Federal da Paraíba, Brazil. thiagosaads@hotmail.com
Sampaio
Fábio Correia
FC
Diniz
Alexandre
A
Bönecker
Marcelo
M
Van Amerongen
Willem Evert
WE
D002648:Child; D032561:Cotton Fiber; D057087:Dental Atraumatic Restorative Treatment / Q000379:methods*; D019140:Dental Care for Children / Q000379:methods*; D003731:Dental Caries / Q000628:therapy*; D003737:Dental Cavity Preparation / Q000379:methods*; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008963:Molar; D016733:Rubber Dams; D012463:Saliva; D018709:Statistics, Nonparametric; D016019:Survival Analysis; D014094:Tooth, Deciduous; D016896:Treatment Outcome