ArticlePloS one2020
Practice-based analysis of direct posterior dental restorations performed in a public health service: Retrospective long-term survival in Brazil.
Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
5 citing papers in PubMed, 12 citations in OpenAlex.
- Dental Splints in Dentoalveolar Trauma: An Overview of Public Healthcare Services in Brazil.Dental traumatology : official publication of International Association for Dental Traumatology · 2026Observational
- Dentists' Knowledge and Clinical Preferences Regarding Evidence-Based Restorative Material Selection in Türkiye: Implications for Clinical Practice and Healthcare Policy.Healthcare (Basel, Switzerland) · 2026Article
- Evaluation of light output from light-curing units used in a public oral health service in Brazil.Brazilian dental journal · 2026Article
- Multifactorial Contributors to the Longevity of Dental Restorations: An Integrated Review of Related Factors.Dentistry journal · 2024Review
- EVIDENCE-PRACTICE GAP IN TREATMENT DECISIONS ABOUT DEFECTIVE COMPOSITE AND AMALGAM RESTORATIONS AMONG BRAZILIAN DENTISTS.Brazilian journal of oral sciences · 2023Article
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aim of this retrospective study was to evaluate the survival and associated factors for the longevity of direct posterior restorations and to verify whether the geographic location of public health units could influence the long-term survival of such restorations. Data were extracted from electronic patient files of the Brazilian public oral health services. The sample comprised 2,405 class I and II restorations performed 4 to 24 years ago (mean, 8.9 years) in 351 patients (6.8 teeth/patient) across 12 public health units located in different city regions (42 professionals-55 restorations). The restoration was considered successful if it had not been repaired or replaced at the time of evaluation; failure was defined as replacement of the restoration, the need for endodontic treatment, tooth/restoration fracture or tooth extraction. Data were analyzed using the Kaplan-Meier test for restoration survival and Cox regression to evaluate the factors associated with failure. The majority of the restorations involved the use of amalgam (85%), involved a single face (70%), and were without pulp/dentin capping (85%). The overall survival rate was 95%, and the mean observation time was 8.9 years. The restoration survival was 79% (95% CI: 60.6-89.5) over 24 years, and the mean survival time was 22.2 years (95% CI: 21.9-22.6 years). The annual failure rate up to 24 years was 0.9%. After the adjustment, only the number of restored faces and the geographic location where the restoration was performed remained associated with failure of the restoration. The direct posterior restorations performed at the evaluated public health service units presented high survival rates. The restorations of people with lower access to POHS had lower survival rates. Class I restorations presented higher survival rates than class II restorations with two or more faces, regardless of the restorative material used.
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