ArticleBMC oral health2024
Comparative evaluation of marginal adaptation and fatigue resistance of endodontically treated premolars restored with direct and indirect coronal restorations: an in vitro study.
Article in BMC oral health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Cuspal displacement, marginal adaptation, and nanoleakage in maxillary premolars restored with a novel auto-cured bulk-fill composite versus a light-cured bulk-fill composite: an in-vitro study.BMC oral health · 2026Article
- Fracture resistance of endodontically treated maxillary premolars restored with different bi-layered core and occlusal overlay materials: an in vitro study.BMC oral health · 2026Article
- Comparison of marginal adaptation and fracture resistance of contemporary composite resins in molars with extensive MOD cavities.BMC oral health · 2026Article
- Impact of Thermomechanical Aging on Marginal Fit and Fracture Resistance of CAD/CAM Endocrowns Fabricated from Different Materials.Polymers · 2026Article
- The impact of combined endodontic-orthodontic treatment on the recovery of masticatory function in patients with crown-root fractures of permanent maxillary anterior teeth.Pakistan journal of medical sciences · 2026Article
- Assessment of fracture resistance in endodontically treated premolars restored using various bulk-fill composites.Bioinformation · 2026Article
- Evaluation of fracture resistance and crack propensity of bulk-fill composite restorations reinforced by polyethylene fiber.BMC oral health · 2025Article
- Influence of Cusp Coverage Design and Hybrid Resin-Ceramic Materials on the Biomechanical Performance of Partial Coverage Restorations.Journal of functional biomaterials · 2025Article
- Effect of different cavity designs and CAD/CAM blocks on fracture resistance of maxillary premolars with MOD cavities.Odontology · 2025Article
- Influence of Direct Coronal Restoration Materials on the Fracture Resistance of Endodontically Treated Premolars: An In Vitro Study.Dentistry journal · 2024Article
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3 authors.
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Abstract
backgroundAn optimum restoration for reconstructing endodontically treated teeth should provide excellent marginal adaptation, high fracture resistance as well as maximum tooth structure conservation. The purpose of this study was to evaluate the marginal adaptation and fatigue resistance of different coronal restorations in endodontically treated premolars.
methodsThirty sound maxillary first premolars were endodontically treated and received MOD cavities. Teeth were randomly allocated into three groups (n = 10) according to the type of coronal restoration: Group R: polyethylene fibers (ribbond), fibers-reinforced composite (everX posterior) and final layer of nano-hybrid composite. Group O: indirect lithium disilicate overlay and Group C: fiber-post, resin composite restoration, and lithium disilicate crown. Marginal gap assessment was performed before and after thermocycling (5000 cycles) using stereomicroscope. Samples were subjected to stepwise-stress loading starting at 200 N, and increased by 100 N in each step until failure occurred. Statistical analysis was done by One-way ANOVA followed Tukey`s Post Hoc test for multiple comparison. Paired t test was used to compare the marginal adaptation before and after thermocycling. Survival probability was evaluated by Life table survival analysis. Failure mode analysis was performed with Chi-square test.
resultsMarginal gap was significantly the lowest in group R (37.49 ± 5.05) and (42.68 ± 2.38), while being the highest in group C (59.78 ± 5.67) and (71.52 ± 5.18) in before and after thermocycling respectively (P < 0.0001). Fatigue resistance was the highest for group O (1310.8 ± 196.7), and the lowest for group R (905.4 ± 170.51) with a significant difference between groups (P < 0.0001). Crown group had the highest percentage (80%) of catastrophic failure, while, overlay group exhibited the lowest (20%).
conclusionsDirect restoration without cuspal coverage using ribbon fibers with short FRC provided better marginal adaptation than indirect overlays and crowns, but fatigue resistance wasn't significantly improved. Adhesive ceramic overlays showed the best fatigue performance and the least catastrophic failure rate compared to both direct fiber-reinforced composite and indirect ceramic full coverage restorations. CLINICAL SIGNIFICANCE: Indirect adhesive overlays are a suitable, more conservative restorative option for endodontically treated teeth than full coverage restorations, especially when tooth structure is severely compromised.
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