ArticleClinical and experimental dental research2025
Marginal Fit and Fracture Resistance of Vertical Versus Horizontal Margins in Monolithic Zirconia Crowns.
Article in Clinical and experimental dental research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
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
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Impact of finish line designs on the adaptation of ceramic fixed dental prostheses: a systematic review and network meta-analysis.BMC oral health · 2025Pooled it
- Effects of Yttria Content and Margin Design on the Fracture Resistance of Monolithic Zirconia Crowns.Journal of functional biomaterials · 2026Article
- Accuracy of Marginal and Internal Adaptation of Advanced Lithium Disilicate Crowns Using Different Margin Designs (In Vitro Study).International journal of dentistry · 2026Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
objectiveThe use of vertical margin design in all-ceramic restoration has generated inquiries regarding its clinical efficacy under diverse dynamic oral conditions. This research aims to assess the marginal fit and fracture resistance of monolithic zirconia crowns featuring vertical margin design as opposed to those with conventional horizontal margin design. MATERIALS AND
methodsTwo metal dies were employed to generate replicated resin dies mimicking mandibular first molar preparation. The metal dies were precision-engineered with two margin designs: vertical margin design presenting a shoulderless configuration (Featheredge) and horizontal margin design (Radial Shoulder). Forty zirconia crowns were produced on the replicated resin dies using two varieties of monolithic zirconia, with twenty crowns in each category: pre-shaded and multilayered zirconia. Both sets were further subdivided into two groups based on the finish line configuration utilized (n = 10). The vertical marginal gap of the zirconia crowns was gauged before and after thermocycling (5-55oC/5000 cycles), followed by loading the crowns until fracture occurred. Statistical analysis was performed using one-way analysis of variance (ANOVA), accompanied by Bonferroni's post hoc test and independent t-test for pairwise comparisons.
resultsThe Shoulder subgroup of BruxZir exhibited the highest mean marginal gap value (120.06 ± 10.15 µ), while the Featheredge subgroup of BruxZir displayed the lowest value (49.72 ± 6.53 µ). Among the BruxZir group, the Featheredge subgroup showcased the highest mean fracture resistance value (4251.57 ± 279.90 N), whereas the Shoulder subgroup recorded the lowest value (1721.60 ± 225.16 N).
conclusionMonolithic zirconia crowns with vertical margin design (Featheredge) demonstrated statistically enhanced performance compared to conventional horizontal margin design, as evidenced by lower marginal gap values and increased fracture resistance tolerance.
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Registered trials
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