Retrospective Analysis of Complications and Survival of Teeth Restored Following Crown Lengthening (NCT07259187) | Clinical Trial Compass
CompletedNot Applicable
Retrospective Analysis of Complications and Survival of Teeth Restored Following Crown Lengthening
United Arab Emirates81 participantsStarted 2022-03-22
Plain-language summary
The ultimate goal for every dental restoration is to restore and maintain the dentition's functionality along with preserving periodontal support. The long-term success of a restored tooth depends on the retention of a healthy periodontium. When restoring a short clinical crown, the clinician may contemplate placement of subgingival margin to gain additional length for retention purposes. Thus, crown lengthening procedure is performed to gain access to the natural tooth structure while maintaining the periodontal health and to increase the retention of the restoration. A full crown restoration is needed to protect the compromised tooth from fracture. The prognosis of these teeth depends on the long-term success rate of each component of the overall treatment and the follow up maintenance.
In order to assist dentists to make an evidence-based decision during treatment planning, this retrospective study aims to investigate the complications and survival rate of the teeth receiving crown following crown lengthening.
Who can participate
Age range
18 Years – 70 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: Patients were included in the study if they met all the following conditions:
* Setting and Providers: The tooth received crown lengthening surgery (CLP) performed by postgraduate residents in Periodontology and subsequent definitive crown placement by postgraduate residents in Prosthodontics at X Hospital.
* Patient Characteristics:
Age between 18 and 70 years at the time of the CLP. Able and willing to participate, with written informed consent obtained.
\- Follow-up and Documentation Requirements: A minimum of 12 months had elapsed since placement of the definitive crown at the time of data collection. Baseline intraoral radiographs available prior to CLP to document periodontal and structural condition.
\- Tooth-Level Clinical Criteria: Tooth mobility not exceeding Miller Class I at baseline. A planned or anticipated crown-root ratio ≥1:1 following CLP based on clinical and radiographic evaluation.
Exclusion Criteria: Patients were excluded if any of the following conditions applied:
* Procedure Purpose or Type: CLP performed exclusively for aesthetic indications.
* Cases involving intentional endodontic treatment and CLP performed solely to correct supra-eruption for prosthetic clearance (i.e., without biological indication).
* Baseline Dental and Periodontal Condition:
Teeth exhibiting furcation involvement at baseline. Mobility greater than Miller Class I preoperatively.
* Teeth functioning as abutments for fixed dental prostheses, due to al…
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
Teeth survival
Timeframe: 1 year or more postintervention
Trial details
NCT IDNCT07259187
SponsorMohammed Bin Rashid University of Medicine and Health Sciences