The Impact of Thread Length on Implant Stability

Not Applicable

Completed

• Conditions: Implant Stability
• Interventions: Device: Implants with 0,7 mm threads; Device: Implants with 0.3 mm threads

• Registration Number: NCT05141851
• Lead Sponsor: University of Lisbon

Brief 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.

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 Timeline

• Study Start: 2018-06-19
• Primary Completion: 2020-02-04
• Study Completion: 2020-06-15
• Status Verified: 2021-11
• Study First Submitted: 2021-11-20
• Study First Submitted QC: 2021-12-01
• Last Update Submitted: 2021-12-01
• Study First Posted: 2021-12-02
• Last Update Posted: 2021-12-02

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 23

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

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Implants with 0,7mm threads	Implants with 0,7 mm threads	Placement of Implants with 0,7mm threads
Implants with 0,3mm threads	Implants with 0.3 mm threads	Placement of Implants with 0,3mm threads

Primary Outcome Measures

Name	Time	Method
primary dental implant stability	On the 1 day of implants placement	measuring the ISQ value (implant stability quotient)

Trial Locations

Locations (1)

Vanessa Rodirgues; 🇵🇹 Lisboa, Portugal