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Emergence Angle, Marginal Bone Loss, and Radiographic Corticalization Around MIS Implants: A 5-Year Retrospective
Tomasz Wach1, Klaudia Kuta2, Adam Michcik3
1Department of Maxillofacial Surgery, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland.
Journal of Clinical Medicine
|May 27, 2026
Summary
The crown emergence angle has minimal impact on dental implant bone loss, especially for single and splinted crowns. While a weak link exists for bridges, other factors likely influence peri-implant tissue stability more significantly.
Area of Science:
- Dental Implantology
- Periodontology
- Biomaterials Science
Background:
- Dental implants are a reliable tooth replacement option.
- Crown emergence angle may influence peri-implant tissue health.
- Understanding this relationship is crucial for long-term implant success.
Purpose of the Study:
- To evaluate the influence of crown emergence angle on marginal bone loss (MBL) and corticalization index (CI).
- To assess these effects at 3-month and 5-year follow-ups.
- To consider the impact of restoration type and implant location.
Main Methods:
- Retrospective analysis of 155 patients with MIS implants.
- Radiographic measurements of crown emergence angle, MBL, and CI.
- Inclusion of single crowns, splinted crowns, and bridges.
Main Results:
- No significant association between emergence angle and MBL for single or splinted crowns.
- A weak, statistically significant association between emergence angle and MBL for bridges.
- Corticalization index increased over time, independent of restoration type.
Conclusions:
- Emergence angle has no clinically significant impact on MBL for single/splinted crowns.
- The weak association for bridges warrants cautious interpretation.
- Biological, biomechanical, and systemic factors are likely more critical for peri-implant tissue stability.
