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Buccal Prosthetic Contour Angles and Peri-Implant Tissue Changes Around Dental Implants

NCT07637864 · Status: ACTIVE_NOT_RECRUITING · Type: OBSERVATIONAL · Enrollment: 100

Last updated 2026-06-10

No results posted yet for this study

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.

Conditions

  • Dental Implants
  • Early Peri-Implant Bone Remodeling
  • Peri-Implant Soft Tissue Remodeling

Interventions

PROCEDURE

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.

Sponsors & Collaborators

  • Chang Gung Memorial Hospital

    lead OTHER

Principal Investigators

  • Cho-Ying Lin · Chang Gung Memorial Hospital

Eligibility

Min Age
20 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-11-13
Primary Completion
2025-10-16
Completion
2026-07-31

Countries

  • Taiwan

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07637864 on ClinicalTrials.gov