Single crowns on narrow versus standard implants for missing molar teeth

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adults who need a single molar replaced in a healed site with limited bucco‑lingual bone width will receive either a narrow‑diameter TiZr implant (≤3.5 mm) or a standard‑diameter implant to support a single crown. The study will track implant survival, peri‑implant tissue health, and prosthetic complications over follow‑up visits. Investigators will also record prosthetic parameters such as emergence angle and platform width and quantify occlusal/bite forces to explore their relationship with outcomes. The aim is to determine whether narrow TiZr implants can provide comparable clinical and technical performance in high‑load posterior sites without the need for bone augmentation.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Aged ≥ 18 years.
* Require replacement of single missing molar tooth with dental implant in fully healed sites.
* Controlled oral hygiene (full-mouth plaque and bleeding scores ≤ 25% at baseline).
* Intact adjacent teeth and opposing dentition.
* Fully healed sites (≥ 6 months) with limited bone availability in the horizontal bucco-lingual dimension (residual bone width of ≤ 6 mm) and minimal height of 8 mm.
* Good compliance and commitment to attend follow-up review appointments.
* Willing to provide informed consent.

Exclusion Criteria:

* Localized/generalized periodontitis.
* Any medical condition that may contraindicate implant treatment (Bornstein et al., 2009).
* Bone metabolic disease and/or taking medications that affect bone metabolism.
* Long term use of non-steroidal anti-inflammatory medications.
* History of malignancy, radiotherapy or chemotherapy.
* Pregnant or lactating women.
* Smokers.
* Severe bruxism or parafunctional habits.
* Large occlusal discrepancies.

Where it's running

• Mbru
  Dubai, United Arab Emirates Recruiting

Study contacts

• Study coordinator: Momen A Atieh, BDS, MSc, DClinDent, PhD, FPFA
• Email: momen.atieh@dubaihealth.ae
• Phone: +9714 383 8905

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

• Graftless Periosteal Coverage vs Xenogenic Graft for Jumping Gap in Immediate Mandibular Molar Implants

  This study tests whether graftless periosteal coverage can perform as well as a xenogenic bone graft beneath a collagen membrane for managing a jumping gap in immediate mandibular molar implants.

  Recruiting Horus University · Al Mansurah, Dakahlia Governorate and 2 other locations · NCT07880184

• Accuracy of the Calibrated Framework for Full-Arch Implant Impressions in Edentulous Patients

  This study tests whether digital scanning with a calibrated framework can match the accuracy of traditional splinted impressions for full-arch dental implants in completely toothless patients.

  Recruiting Mansoura University · Al Mansurah · NCT07858682

• Passive Fit of Implant-Supported Frameworks Using Digital vs Conventional Impressions

  This study tests whether three impression methods can produce a passively fitting full-arch mandibular implant framework for edentulous patients.

  Recruiting Mansoura University · Al Mansurah, Dakahlia Governorate · NCT07778199

• Comparing two bone grafts to preserve the socket after tooth extraction

  This test will compare an allograft and a bovine xenograft to see which better preserves jaw bone and gum shape after tooth extraction in healthy adults aged 21–50.

  Recruiting Pharos University in Alexandria · Alexandria · NCT07344025

• Movement of Dental Implants During Osseointegration

  This multicenter observational study tests whether dental implants shift in position during the healing period before loading in adults needing a single implant-supported tooth.

  Recruiting at 3 sites Aula Dental Avanzada · Alicante, Alicante and 2 other locations · NCT07297147

• Natural bioactive gel to treat peri-implantitis around dental implants.

  This study will try adding a natural bioactive gel (Sterify Gel®) to standard non-surgical cleaning to see if adults with peri-implantitis have less inflammation and bone loss around their implants.

  Recruiting University of Pavia · Pavia, Lombardy · NCT07088679

How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.