Buccal Prosthetic Contour Angles and Peri-Implant Tissue Changes Around Dental Implants (NCT07637864) | Clinical Trial Compass
Active — Not RecruitingNot Applicable
Buccal Prosthetic Contour Angles and Peri-Implant Tissue Changes Around Dental Implants
Taiwan100 participantsStarted 2019-11-13
Plain-language 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.
Who can participate
Age range
20 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Adults aged 20 years or older.
* Patients receiving at least one bone-level dental implant restored with a customized abutment and screw-retained or screwmentable prosthesis.
* Presence of at least one adjacent natural tooth and an opposing dentition.
* Implant sites that received second-stage surgery and prosthetic restoration.
* Presence of at least 2 mm of peri-implant keratinized mucosa after second-stage surgery.
* No buccal or peri-implant bone dehiscence following implant placement.
* Availability of complete clinical records, intraoral photographs, radiographic images, and cone-beam computed tomography (CBCT) scans with at least 1 year of follow-up after prosthetic loading.
Availability of adequate radiographic quality for peri-implant hard and soft tissue measurements.
Exclusion Criteria:
* Uncontrolled systemic diseases or medical conditions that may affect healing, including uncontrolled diabetes mellitus, metabolic bone diseases, autoimmune diseases, or history of head and neck radiotherapy.
* Current use of medications known to affect bone metabolism.
* Pregnancy, planned pregnancy, or breastfeeding.
* Poor-quality CBCT images or radiographic artifacts that interfere with measurement accuracy.
* Incomplete clinical or radiographic follow-up records.
* Poor oral hygiene or irregular supportive maintenance follow-up.
* Implant sites with prosthetic or imaging conditions preventing reliable evaluation of prosthetic contour configuration or …
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Marginal Bone Level Change
Timeframe: Baseline(implant placement) to 1 year after prosthetic loading