Effect of Archwire Gauge on the Rate of Canine Retraction

N/ACompletedNCT04020952

Cairo University18 enrolled

Overview

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.

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 Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Canine Retraction

Interventions

st.st 0.019×0.025" wireOTHER

rectangular stainless steel wire that will be used during canine retraction after first premolars extraction

st.st 0.016×0.022" wireOTHER

rectangular stainless steel wire that will be used during canine retraction after first premolars extraction

st.st 0.017×0.025" wireOTHER

rectangular stainless steel wire that will be used during canine retraction after first premolars extraction

Eligibility

Sex: FEMALEMin age: 16 YearsMax age: 26 YearsHealthy volunteers:

Medical Language ↔ Plain English

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.

Locations (1)

faculty of dentistry, Cairo University

Cairo, Egypt

Outcomes

Primary Outcomes

rate of canine retraction

the distance that canine moved every month

Time frame: 6 months

Secondary Outcomes

change in canine tip

change in canine crown tipping to certain reference plane with the aid of cone beam computed tomography

Time frame: 6 months

change in canine torque

change in canine crown and root torque to certain reference plane with the aid of cone beam computed tomography

Time frame: 6 months

loss of molar anchorage

assess from digital models if there is change in mesio-distal position of maxillary first molar

Time frame: 6 months

amount of canine root resorption

assess amount of root resorption (if occurred) with the aid of cone beam computed tomography

Time frame: 6 months

Data from ClinicalTrials.gov

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