ArticleJournal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]2026
Peri-Implant Inflammation Varies With Different Restorative Emergence Angles: An Histological Evaluation.
Article in Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.], 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.
What it found
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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, 1 synthesis or guideline pooled it.
- Influence of Concave Versus Convex Emergence Profiles on Midfacial Mucosal Stability-A Systematic Review With Meta-Analysis.Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2026Pooled it
- Immediate Loading on Tapered Versus Straight Multiple Implants: A 3-Year Follow-Up of a Randomized Clinical Trial.Clinical implant dentistry and related research · 2026Trial
- Peri-Implant Tissue Health and Prosthodontic Outcomes of a Cylindrical-Conical Implant with a Progressive Thread Design at Five-Year Follow-Up: A Single-Center Cross-Sectional Retrospective Study.Dentistry journal · 2026Article
- Peri-Implant Supracrestal Resiliency (PSR): A Geometric Determinant Guiding Emergence Profile Execution.Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2026Article
- Is Baseline Vertical Implant Positioning Relative to Adjacent Teeth Associated with Peri-Implant Outcomes? A Systematic Review and Meta-Analysis.Dentistry journal · 2026Review
Corrections and comments
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Authors and funding
8 authors.
Funding
Abstract
objectivesTo histologically evaluate peri-implant inflammatory responses associated with varying restorative emergence angles and to assess differences between buccal and lingual implant sites. MATERIALS AND
methodsSix healthy male mongrel dogs received four bone-level implants (3.8 × 7 mm) per hemi-mandible in the posterior mandible. Customized abutments with standardized restorative angles of 20°, 40°, 60°, and 80° were immediately connected. After 24 weeks, all implants were retrieved for histological processing and quantitative analysis of inflammatory cell infiltration within three defined peri-implant soft tissue regions. A linear mixed-effects model was used to compare the groups to account for within-subject correlations.
resultsHistological sections were obtained for all specimens (N = 48). Inflammatory cell counts increased progressively with wider restorative angles, demonstrating a significant dose-dependent relationship (p < 0.001). At buccal sites, inflammation remained low up to 40° (20° = 3%; 40° = 6%) but increased sharply at 60° (≈10%) and 80° (≈13%) (p < 0.001), indicating a threshold beyond which wider emergence angles markedly intensified the inflammatory response. Lingual sites exhibited a similar, though less pronounced pattern. Values were stable up to 40° (20° = 4%; 40° = 3.1%), followed by a moderate rise at 60° (≈7%) and a pronounced increase at 80° (≈12%) (p < 0.001). When both aspects were analyzed together, significant angle-by-site interactions emerged at 40° and 60°, indicating a consistently higher inflammatory response on the buccal compared with the lingual side.
conclusionsWider restorative emergence angles (> 40°) are associated with increased peri-implant inflammatory cell infiltration, particularly at buccal sites. CLINICAL RELEVANCE: Wide restorative emergence angles (> 40°) favor peri-implant inflammation, potentially compromising the long-term stability of peri-implant tissues.
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