Alveolar Ridge Preservation (ARP) in the Posterior Maxilla After the Extraction of Maxillary Molars
Recruiting now · Not applicable
Conditions studied: Alveolar Bone Loss
In brief
Dental implants are a fixed replacement solution with reported long-term survival rates between 94-98% over 20-40 years. In order to ensure successful implant therapy, adequate bone and soft tissue as well as correct 3D positioning of the implant are required. Upon extraction of a tooth, socket width can decrease by up to 60% within six months post-extraction, with a 11-22% vertical reduction. Additionally, sinus pneumatization occurs post-extraction as the maxillary sinus expands into the empty socket due to disuse atrophy and intra-sinus air pressure, as explained by Wolff's law. This further reduces residual bone height (RBH), often resulting in posterior maxillary sites requiring supplemental procedures to prevent bone loss or to augment the bone height at the time of implant placement. However, if the bone height and width dimensions are sufficient before and after extraction - in that, even with the aforementioned loss in width and height percentages in the latter, a standard implant may still be placed in the surrounding bone, one can argue that grafting may not be necessarily done at the time of extraction. Rather, it can be tailored to the patients' needs; thus potentially reducing overall post-operative discomfort and pain.
Key facts
- Study ID
- NCT07433322
- Run by
- Virginia Commonwealth University
- People needed
- 40
- Starts
- 2026-06-01
- Expected to finish
- 2028-04-01
- Last updated by the study team
- 2026-06-26
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Intact or <5mm dehiscence buccally and palatally
- Initial residual bone height (RBH) of at least 6 mm. 3-A minimum distance of 1 mm between root apices and sinus membrane.
You may not qualify if…
- Medically compromised
- heavy smokers
- young (<18 yrs.) or those refusing treatment are excluded.
Where it is running
- Virginia Commonwealth University — Richmond, Virginia, United States (enrolling)
Full record on ClinicalTrials.gov
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