Speed of Premolar Extraction Space Closure: Healed vs Recent Extraction Site

Not Applicable

Completed

• Conditions: Orthodontic Appliance

• Registration Number: NCT04598490
• Lead Sponsor: Jordan University of Science and Technology

Brief Summary

The aim was to compare the rate of teeth movement into fresh and old extraction sites.

Detailed Description

Trial design: Randomized controlled clinical trial with a split mouth design. Setting: Jordan University of Science and Technology(JUST) Postgraduate Dental Teaching Clinics and labs.

Participants and interventions: Twenty-eight subjects with bimaxillary proclination requiring extraction of all first premolar teeth participated in this study. In the lower arch, two groups were also identified; group 1 having the first premolar extracted before the commencement of orthodontic treatment and group 2 having the first premolar extracted just before space closure when 0.019 x 0.025 inch SS archwire was reached. Patients were followed-up monthly for three months. At every follow-up visit lower alginate impressions were taken. Extraction spaces in the lower arch follow-up models were measured using digital caliper.

The rate of extraction space closure in the lower arch was assessed monthly.

Study Timeline

• Study Start: 2018-12-01
• Primary Completion: 2019-09-01
• Study Completion: 2020-08-01
• Study First Submitted: 2020-09-09
• Study First Submitted QC: 2020-10-21
• Study First Posted: 2020-10-22
• Status Verified: 2021-09
• Last Update Submitted: 2021-09-27
• Last Update Posted: 2021-10-04

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 28

Inclusion Criteria

• Age ≥ 16 years
• Proclined upper and lower incisors (Ui/max >115 o, Li/mand >99o)
• Mild upper and lower arch crowding (<4mm) or no crowding
• Need for upper and lower first premolars extraction
• Skeletal I malocclusion (1<ANB <5)
• Average lower facial height and maxillomandibular plane angle (22 o <MM<32 o)
• Class I canine relationship
• Good oral hygiene and healthy periodontium

Exclusion Criteria

• Poor oral hygiene
• Diseases and medications that were likely to affect bone biology
• Previous orthodontic treatment
• Evidence of bone loss
• Active periodontal disease
• Smoking

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Amount of space closure	3 months	Width of extraction space will be measured in millimeters

Trial Locations

Locations (1)

Faculty of Dentistry/Jordan University of Science and Technology Dental Teaching Clinics; 🇯🇴 Irbid, Jordan