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Buccal Prosthetic Contour Angles and Peri-Implant Tissue Changes Around Dental Implants
Sponsor: Chang Gung Memorial Hospital
Summary
This retrospective observational study aims to evaluate the association between buccal prosthetic profile angles at different supraplatform zones and peri-implant tissue changes around bone-level dental implants restored with customized abutments and crowns. The main questions it aims to answer are: Whether prosthetic profile angles within different vertical zones above the implant platform (0-2 mm and 2-4 mm) demonstrate different associations with marginal bone level changes around dental implants. Whether buccal prosthetic contour angles at different supraplatform depths are associated with peri-implant soft tissue conditions, including keratinized tissue width and mucosal changes. Whether peri-implant phenotype-related factors, including mucosal tunnel depth, soft tissue thickness, and buccal bone thickness, are associated with peri-implant tissue remodeling. Researchers will retrospectively analyze clinical records, intraoral photographs, radiographic images, and cone-beam computed tomography (CBCT) scans collected during routine implant treatment and follow-up care up to 1 year after prosthetic loading. Buccal prosthetic contour angles will be measured at different vertical zones above the implant platform to evaluate the biologic influence of contour configuration at different peri-implant tissue levels.
Official title: Association Between Buccal Prosthetic Profile Angles at Different Supraplatform Zones and Peri-Implant Tissue Remodeling Around Bone-Level Implants: A Retrospective CBCT-Based Cohort Study
Key Details
Gender
All
Age Range
20 Years - Any
Study Type
OBSERVATIONAL
Enrollment
100
Start Date
2019-11-13
Completion Date
2026-07-31
Last Updated
2026-06-10
Healthy Volunteers
No
Interventions
Implant-Supported Prosthetic Restoration
Participants included in this retrospective observational cohort study received routine implant-supported prosthetic rehabilitation with bone-level dental implants restored using customized abutments and screw-retained or screwmentable prostheses. Prosthetic contour configuration and buccal profile angles at different supraplatform vertical zones (overall emergence angle, 0-2 mm profile angle, and 2-4 mm profile angle above the implant platform) will be evaluated using cone-beam computed tomography (CBCT) and radiographic analysis. Clinical and radiographic follow-up data obtained during routine maintenance care up to 1 year after prosthetic loading will be retrospectively analyzed to assess associations between prosthetic contour characteristics and peri-implant hard and soft tissue remodeling.
Locations (1)
Chang Gung Memorial Hospital
Taipei, Taiwan