Emergence Angle and Emergence Profile in Implant-Supported Restorations: A Scoping Review

Area of Science:

• Dentistry
• Biomaterials Science
• Biomechanical Engineering

Background:

• Prosthodontic restoration design is critical for implant-supported treatment longevity and peri-implant tissue health.
• Suboptimal emergence angles and profiles can negatively impact tissue stability and clinical outcomes.
• Generative design offers an algorithmic approach to optimize hybrid implant abutment shape.

Purpose of the Study:

• To review and synthesize current literature on the emergence angle and profile of implant-supported restorations.
• To identify key parameters influencing the success of prosthodontic restoration design.
• To inform generative design workflows for improved implant abutment creation.

Main Methods:

• A comprehensive literature review was conducted using PubMed and Scopus databases.
• Studies published up to December 1, 2025, investigating emergence angle and profile were included.
• Seventeen studies met the inclusion criteria for final analysis.

Main Results:

• The optimal emergence angle remains under discussion, with angles below 30° suggested as potentially beneficial.
• A concave emergence profile significantly contributes to enhanced stability and preservation of peri-implant health.
• Key parameters for generative design were characterized through literature evaluation.

Conclusions:

• Characterizing emergence angle and profile parameters offers valuable insights for generative design.
• Generative design workflows can create implant abutment designs balancing mechanical performance and biological compatibility.
• Optimized designs promote long-term success and peri-implant tissue health in implant-supported restorations.