Effect of Archwire Gauge on the Rate of Canine Retraction

Not Applicable

Completed

• Conditions: Canine Retraction
• Interventions: Other: st.st 0.019×0.025" wire; Other: st.st 0.016×0.022" wire; Other: st.st 0.017×0.025" wire

• Registration Number: NCT04020952
• Lead Sponsor: Cairo University

Brief Summary

trial will be done to evaluate the effect of archwire gauge on the rate of canine retraction, canine tip and torque, root resorption and loss of anchorage in maxillary dental protrusion cases requiring first premolars extraction.

Detailed Description

Three working archwires of different gauges will be used during canine retraction; st.st 0.019×0.025" as a comparator, st.st 0.016×0.022" and st.st 0.017×0.025" wires as interventions. after levelling and alignment till reaching the working archwire, it will be left in place for a month then maxillary first premolars will be extracted and base line records will be taken(digital models, digital periapical radiographs and panorama). digital models will be taken monthly to measure rate of canine retraction for 6 months. after 6 month evaluation of anchorage loss, change in canine tip and torque will be done on last obtained digital model , panorama will be taken to evaluate the change in canine tip and digital periapical radiograph will be taken and compared with the preretraction radiograph to evaluate amount of root resorption.

Study Timeline

• Study First Submitted: 2019-07-09
• Study First Submitted QC: 2019-07-12
• Study First Posted: 2019-07-16
• Study Start: 2019-09-10
• Primary Completion: 2020-09-20
• Study Completion: 2021-07-15
• Status Verified: 2022-07
• Last Update Submitted: 2022-07-20
• Last Update Posted: 2022-07-22

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 18

Inclusion Criteria

• Adult females (age range 18-28 years old).
• Maxillary dental protrusion indicating first premolars extraction.
• Full permanent dentition (not necessitating third molars).

Exclusion Criteria

• Patients having systemic diseases or on medications that would affect tooth movement.
• Active periodontal disease or obvious bone resorption in maxillary arch.
• Patients with habits that are detrimental to dental occlusion (thumb sucking, tongue thrusting ... etc.).
• Previous orthodontic treatment.
• Missing teeth.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
st.st 0.019×0.025" wire	st.st 0.019×0.025" wire	-
st.st 0.016×0.022" wire	st.st 0.016×0.022" wire	-
st.st 0.017×0.025" wire	st.st 0.017×0.025" wire	-

Primary Outcome Measures

Name	Time	Method
rate of canine retraction	6 months	the distance that canine moved every month

Secondary Outcome Measures

Name	Time	Method
loss of molar anchorage	6 months	assess from digital models if there is change in mesio-distal position of maxillary first molar
change in canine torque	6 months	change in canine crown and root torque to certain reference plane with the aid of cone beam computed tomography
amount of canine root resorption	6 months	assess amount of root resorption (if occurred) with the aid of cone beam computed tomography
change in canine tip	6 months	change in canine crown tipping to certain reference plane with the aid of cone beam computed tomography

Trial Locations

Locations (1)

faculty of dentistry, Cairo University; 🇪🇬 Cairo, Egypt