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Single Implant Crowns Supported by Narrow or Standard Diameter Implants in Molar Sites

NCT07073196 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 40

Last updated 2025-07-18

No results posted yet for this study

Summary

Standard dental implants require sufficient bone and spacing, which may not be available in all patients. To address these limitations, narrow diameter implants (≤3.5 mm) have been introduced as a less invasive alternative, especially useful for medically compromised patients or those avoiding bone grafts. However, narrow implants made of pure titanium have shown long-term biological and technical concerns.

The introduction of titanium-zirconium (TiZr) alloy has improved mechanical strength, and several studies have demonstrated favorable outcomes with narrow TiZr implants. Yet, evidence remains limited regarding their exclusive use in high-load posterior (molar) regions. Prior studies report conflicting failure rates, potentially linked to prosthetic design and occlusal forces, but lack quantitative analysis of bite forces or prosthetic angles.

Emergence angle, prosthetic platform width, and implant-abutment connection may all influence implant stability and peri-implant tissue health. A newly introduced TorcFit™ connection may offer better stress distribution and torque resistance, but its clinical relevance-especially in narrow implants used for molars-remains untested.

Conditions

  • Dental Implants

Interventions

PROCEDURE

Dental implant treatment (narrow implants)

Replacement of a missing molar tooth with a narrow dental implant

PROCEDURE

Dental implant treatment (standard implants)

Replacement of a missing molar tooth with a standard dental implant

Sponsors & Collaborators

  • Mohammed Bin Rashid University of Medicine and Health Sciences

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-10-01
Primary Completion
2028-02-01
Completion
2029-12-01

Countries

  • United Arab Emirates

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07073196 on ClinicalTrials.gov