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

Not Applicable

Completed

• Conditions: Orthodontic Appliance
• Interventions: Device: Space closure into old extraction space; Device: Space closure into recent extraction space

• 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

Arm && Interventions

Group	Intervention	Description
Healed extraction site	Space closure into old extraction space	Old Extraction Space
unhealed extraction site	Space closure into recent extraction space	Recent Extraction space

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