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OpenTrials
Completed

NCT Number: NCT05141851

The Impact of Thread Length on Implant Stability

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.

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Key information

Conditions

Implant Stability

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Vanessa Rodirgues

Lisbon, Portugal

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Implants with 0,7 mm threads

Device

Implants were placed, with threads of 0.7 mm in the location of premolars and molars.

Implants with 0.3 mm threads

Device

Implants were placed, with threads of 0.3 mm in the location of premolars and molars.

Primary outcomes

  1. primary dental implant stability

    Time frame: On the 1 day of implants placement

    measuring the ISQ value (implant stability quotient)

Sponsors and collaborators

Lead sponsor

University of Lisbon

Other

Registry information

Important dates

Study start
2018
Primary completion
2020
Study completion
2020
First posted
Dec 2, 2021
Registry last updated
Dec 2, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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