Effect of Placing the Implant Crown on the Implant on the Same Day as the Implant vs. 4 Weeks Later.
Recruiting now · Not applicable
Conditions studied: Lower Molar Requiring Extraction
In brief
In this study, participants with one lower first molar that require removal and replacement using dental implants will be enrolled. The implant will be inserted 12-16 weeks after tooth extraction and restored either immediately with an artificial tooth (fixed implant crown) in 50% of the cases or 4 weeks later in the remainder 50%. Immediate and early loading will be compared and the investigators expect no difference in terms of implant success and health of the tissue around the implant.
Key facts
- Study ID
- NCT04319042
- Run by
- University of Bern
- People needed
- 100
- Starts
- 2021-04-01
- Expected to finish
- 2033-05-01
- Last updated by the study team
- 2026-06-26
Who can join
Age: 20 and older. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Age ≥ 20 years
- Willingness to sign informed consent and to participate in the study
- Plaque index according to Silness and Loe of < 35% [26]
- Presence of a mandibular first molar that has to be extracted
- Sufficient vertical interocclusal space for the placement of an implant crown (7 mm)
- Presence of an opposing natural or artificial tooth
- Ridge height sufficient for the placement of a ≥ 10 mm-long implant
- Sufficient ridge width for the placement of a 4.1mm diameter implant
You may not qualify if…
- Any physical or mental disorder that would interfere with the ability to perform adequate oral hygiene or the capability of providing written informed consent and compliance to the protocol
- Any disorder that would interfere with wound healing or represent a contraindication for implant surgery such as, but not limited to, uncontrolled diabetes or conditions resulting in or requiring immunosuppression, radiation, chemotherapy, frequent use of antibiotics or antiresorptive medication such as bisphosphonates
- Pregnancy or lactation
- Intention to become pregnant between inclusion and implant loading
- Heavy smoking habit with ≥ 10 cig/d
- Severe bruxism or clenching habits, present oro-facial pain
- Insufficient ridge width/height for the study implant
- Defect of any alveolar wall (secondary exclusion criterion at tooth extraction)
- ISQ < 70 (secondary exclusion criterion for Group A at implant placement, for Group B at loading visit)
Where it is running
- Klinik für Oralchirurgie und Stomatologie — Bern, Canton of Bern, Switzerland (enrolling)
- Klinik für rekonstruktive Zahnmedizin und Gerodontologie — Bern, Canton of Bern, Switzerland (enrolling)
Full record on ClinicalTrials.gov
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