The objective of this randomized clinical trial is to evaluate the survival of restoration with high viscosity glass ionomer cement (HVGIC) with pre-etching with polyacrilic acid compared with no pre-etching in order to treat occlusoproximais caries lesion in primary molars, as well as the impact of those treatments in the caries lesion progression, the cost-efficacy of the procedures and the discomfort reported by the patient. Children of 4 to 8 years will be selected in the Pediatric Dentistry Clinic of Universidade Ibirapuera. 192 teeth will be randomized in 2 experimental groups: (1) HVGIC restoration with pre-etching and (2) HVGIC restoration with no pre-etching. Will be considered as primary outcome the survival of the restoration evaluated after 6, 12, and 24 months by two trained examiners. The carious lesions progression will be evaluated after 24 months of follow-up. The time of the treatments and the cost of the materials will be considered to estimate the cost-efficacy of each treatment. The discomfort reported by the participant will be measured after each procedure following the Wong-Baker scale. For the primary outcome, Kaplan-Meier survival and the Long-Rank test will be used in order to compare the two groups. Cox regression will be performed in order to evaluate thee influence of explanatory variables on the outcome.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Pre-etching of the surface with polyacrylic acid for 10 s, followed by washing and drying the cavity with cotton balls; and fill with HVGIC, inserted into the cavity with the aid of an insertion spatula and adapted to the cavity by the digital pressure technique.
Restoration with HVGIC, inserted into the cavity with the aid of an insertion spatula and adapted to the cavity by the digital pressure technique.
Tamara Kerber Tedesco
São Paulo, São Paulo, Brazil
Survival of restorations
Comparing the survival of HVGIC restorations without pre-etching with HVGIC restorations with pre-etching by clinical assessment using a criteria proposed by Roleveld et al., 2006.
Time frame: 24 months
Caries lesion progression will be evaluated by comaparison of radiograph immediately after the restoration
The caries lesion progression will be evaluated by comaparison of radiograph immediately after the restoration and after 24 months.
Time frame: Immediately after the restoration and 24 months
Cost-efficacy
The duration of the treatments (time of treatment) and the cost of the materials used will be considered for the estimation of the cost-efficacy of the treatments by a ratio - cost/efficacy, being efficacy considered the tooth survival.
Time frame: 24 months.
Discomfort regarding the treatment options by a Wong-Baker FACES pain rating scale
Children-reported discomfort regarding the treatment options by a Wong-Baker FACES pain rating scale. The scale present 6 different faces since "very happy" until "very sad" with the treatment.
Time frame: Immediately after the treatment
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