The Impact of Thread Length on Implant Stability

December 1, 2021 updated by: Vanessa Rocha Rodrigues, University of Lisbon
Some studies show that different types of threads in tapered implants result in differences in primary stability. The aim of this study is to a perform a prospective, controlled, randomized clinical trial comparing primary and secondary stability between long and standard thread implants in the treatment of partial edentulous patients.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The study sample consists of 23 maxillary partial edentulous patients, where 32 implants were placed, with threads of 0.7 mm or 0.3 mm in the location of premolars and molars. The comparison, in terms of primary stability, is made by measuring the ISQ value (implant stability quotient), in four locations (buccal, palatal, mesial and distal). Statistical analysis was performed using the independent T-Test.

Study Type

Interventional

Enrollment (Actual)

23

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Portugal
      • Lisboa, Portugal
        • Vanessa Rodirgues

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

16 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Minimum 18 years;
  • No systemic conditions that contraindicate surgery;
  • Periodontal health or periodontal disease treated as part of a periodontal support program and having a high level of plaque control;
  • Partial edentulous patients, in the upper jaw, specifically in the location of premolars and molars;

Exclusion Criteria:

  • Patients with insufficient quantity of bone for implant placement without bone regeneration procedures;
  • Patients who underwent medication that could affect stability and osteointegration up to 3 months prior to study initiation;
  • Patients with untreated periodontal pathology or who have not followed periodontal supportive treatment;
  • Smokers, Pregnant or lactating women.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Implants with 0,7mm threads
Placement of Implants with 0,7mm threads
Device: Implants with 0,7 mm threads
Implants were placed, with threads of 0.7 mm in the location of premolars and molars.
Active Comparator: Implants with 0,3mm threads
Placement of Implants with 0,3mm threads
Device: Implants with 0.3 mm threads
Implants were placed, with threads of 0.3 mm in the location of premolars and molars.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
primary dental implant stability
Time Frame: On the 1 day of implants placement
measuring the ISQ value (implant stability quotient)
On the 1 day of implants placement

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Lisbon

Investigators

  • Study Director: Paulo Mascarenhas, PhD, University of Lisbon
  • Principal Investigator: Vanessa Rodrigues, Dr, University of Lisbon

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

June 19, 2018

Primary Completion (Actual)

February 4, 2020

Study Completion (Actual)

June 15, 2020

Study Registration Dates

First Submitted

November 20, 2021

First Submitted That Met QC Criteria

December 1, 2021

First Posted (Actual)

December 2, 2021

Study Record Updates

Last Update Posted (Actual)

December 2, 2021

Last Update Submitted That Met QC Criteria

December 1, 2021

Last Verified

November 1, 2021

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • The impact of thread length on

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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