Impact of Abutment Screw Torque on Marginal Bone Loss (NCT07234552) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Impact of Abutment Screw Torque on Marginal Bone Loss
30 participantsStarted 2026-01-01
Plain-language summary
The objective of this clinical trial is to evaluate the impact of different torque values applied during transmucosal abutment placement in dental implants on marginal bone loss and peri-implant parameters, including the patient's perception of the treatment.
The main questions the study aims to answer are:
1. Is there any difference in marginal bone loss between abutments torqued at 15 Ncm, 30 Ncm, and submerged implants without immediate transmucosal connection?
2. Are there differences in microleakage between the different torque levels?
3. How do these torque values affect peri-implant soft tissues and patient satisfaction?
4. Does the applied torque influence the patient's quality of life after the prosthetic phase?
Each participant will receive three dental implants during the same surgical procedure. One of the following approaches will be applied to each implant:
1. A transmucosal abutment torqued to 15 Ncm
2. A transmucosal abutment torqued to 30 Ncm
3. A healing cap without transmucosal connection (submerged implant)
After implant placement, clinical and radiographic assessments will be performed to measure marginal bone loss and peri-implant parameters.
Who can participate
Age range
18 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:
* Posterior edentulism
* Completion of craniofacial growth
* Full-mouth plaque index and bleeding index \< 25%
* Sufficient bone height and width for implant placement without the need for bone regeneration procedures
* Presence of at least 2 mm of keratinized mucosa around the dental implant
* Stable occlusion and healthy periodontium
* Absence of medical conditions that contraindicate implant surgery, such as heavy smoking (\<10 cigarettes per day), severe bruxism, pregnancy or breastfeeding, bisphosphonate therapy, and patients undergoing chemotherapy or radiotherapy in the head and/or neck area
* Uncooperative patients
Exclusion Criteria:
* Loss to follow-up
* Incorrectly parallelized periapical radiographs
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 loss (mm) assessed by standardized periapical radiographs
Timeframe: Day 0 (surgery); 1 month post-op; 3 months post-op (prosthetic loading); and 1, 3, 6, and 12 months post-loading. Unit of measure: Milimeters (mm)