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Randomized Controlled Trial
. 2018 Jan 18:26:e20170129.
doi: 10.1590/1678-7757-2017-0129.

Randomized clinical trial of encapsulated and hand-mixed glass-ionomer ART restorations: one-year follow-up

Affiliations
Randomized Controlled Trial

Randomized clinical trial of encapsulated and hand-mixed glass-ionomer ART restorations: one-year follow-up

Maria Cristina Carvalho de Almendra Freitas et al. J Appl Oral Sci. .

Abstract

This prospective, randomized, split-mouth clinical trial evaluated the clinical performance of conventional glass ionomer cement (GIC; Riva Self-Cure, SDI), supplied in capsules or in powder/liquid kits and placed in Class I cavities in permanent molars by the Atraumatic Restorative Treatment (ART) approach. A total of 80 restorations were randomly placed in 40 patients aged 11-15 years. Each patient received one restoration with each type of GIC. The restorations were evaluated after periods of 15 days (baseline), 6 months, and 1 year, according to ART criteria. Wilcoxon matched pairs, multivariate logistic regression, and Gehan-Wilcoxon tests were used for statistical analysis. Patients were evaluated after 15 days (n=40), 6 months (n=34), and 1 year (n=29). Encapsulated GICs showed significantly superior clinical performance compared with hand-mixed GICs at baseline (p=0.017), 6 months (p=0.001), and 1 year (p=0.026). For hand-mixed GIC, a statistically significant difference was only observed over the period of baseline to 1 year (p=0.001). Encapsulated GIC presented statistically significant differences for the following periods: 6 months to 1 year (p=0.028) and baseline to 1 year (p=0.002). Encapsulated GIC presented superior cumulative survival rate than hand-mixed GIC over one year. Importantly, both GICs exhibited decreased survival over time. Encapsulated GIC promoted better ART performance, with an annual failure rate of 24%; in contrast, hand-mixed GIC demonstrated a failure rate of 42%.

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Figures

Figure 1
Figure 1. CONSORT participant flowchart. np=number of patients; nr=number of restorations
Figure 2
Figure 2. ART criteria according to Lo and Holmgren (2001)
Codes: 0, 1, 2 = successful; 3, 4, 5, 6 = failure; 7,8 = excluded

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