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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05141851
Other study ID # The impact of thread length on
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date June 19, 2018
Est. completion date June 15, 2020

Study information

Verified date November 2021
Source University of Lisbon
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

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.


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.


Recruitment information / eligibility

Status Completed
Enrollment 23
Est. completion date June 15, 2020
Est. primary completion date February 4, 2020
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility 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 Design


Related Conditions & MeSH terms


Intervention

Device:
Implants with 0,7 mm threads
Implants were placed, with threads of 0.7 mm in the location of premolars and molars.
Implants with 0.3 mm threads
Implants were placed, with threads of 0.3 mm in the location of premolars and molars.

Locations

Country Name City State
Portugal Vanessa Rodirgues Lisboa

Sponsors (1)

Lead Sponsor Collaborator
University of Lisbon

Country where clinical trial is conducted

Portugal, 

Outcome

Type Measure Description Time frame Safety issue
Primary primary dental implant stability measuring the ISQ value (implant stability quotient) On the 1 day of implants placement
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