Using supplementary implants to support removable dental prostheses for partial edentulism

Supplementary Implants Supporting Conventional RDPs in Kennedy Class I: A Dual-centered Randomized Controlled Trial

NA · University Hospital, Basel, Switzerland · NCT04276246

This study tests whether adding extra dental implants can improve the comfort and satisfaction of people with partial tooth loss who use removable dentures.

Quick facts

PhaseNA
Study typeInterventional
Enrollment12 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity Hospital, Basel, Switzerland (other)
Locations1 site (Basel)
Trial IDNCT04276246 on ClinicalTrials.gov

What this trial studies

This study investigates the additional benefits of supplementary implants in patients with Kennedy Class I partial edentulism. It focuses on patient-reported outcome measures (PROMs) and conducts a cost-benefit analysis comparing the costs of maintenance care. Participants will receive dental implants and retentive components to enhance their removable partial dentures. The study aims to provide insights into the effectiveness and economic implications of this intervention.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with bilateral edentulous areas in the posterior region of the jaw and remaining natural teeth.

Not a fit: Patients with uncontrolled systemic diseases, severe smoking habits, or inadequate oral hygiene may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly improve the quality of life for patients with partial edentulism by enhancing the stability and functionality of their dental prostheses.

How similar studies have performed: Previous studies have shown promising results with supplementary implants in similar patient populations, indicating potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subjects must have voluntarily signed the informed consent before any study action, are willing and able to attend scheduled follow-up visits, and agree that the encoded data will be collected and analyzed
* Males and females with at least 18 years of age
* intraoral situation with bilateral edentulous areas located posterior to the remaining natural teeth (Kennedy class I) in the upper or lower jaw
* remaining dentition includes a first premolar, canine or incisor as the most posterior tooth

Exclusion Criteria:

* Uncontrolled systemic disease that would interfere with dental implant therapy;
* Patients who smoke \> 10 cigarettes per day or tobacco equivalents;
* Patients with alcohol and/or drug abuse;
* Patients with chronic pain;
* Patients with untreated periodontitis and / or inadequate oral hygiene (Plaque Index \< 30%);
* Medical conditions requiring chronic high dose steroid therapy or anti-resorptive treatment;
* Conditions or circumstances, in the opinion of the investigators, which would prevent completion of study participation or interfere with analysis of study results such as history of non-compliance or unreliability.

Where this trial is running

Basel

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Partial Edentulism Kennedy Class 1, Partial Edentulism, Kennedy Class 1, Removable partial dentures, Supplementary implants

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.