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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT04905004
Other study ID # 20153110-8-14-2017
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date April 1, 2017
Est. completion date June 1, 2022

Study information

Verified date May 2021
Source Future University in Egypt
Contact Reem ElShazly, MSc
Phone +201114666516
Email reemhazem24@gmail.com
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Canine retraction after 1st premolar extracion into the extraction space is a routine treatment in orthodontics. Orthodontic patients requiring first premolar extraction, canine retraction and maximum anchorage were recruited for this randomized controlled trial. A search of the literature did not indicate the ideal frequency of elastomeric chain reactivation for optimum canine retraction. The study was approved by the ethical committee. The first premolars were extracted. Elastomeric chains were used to retract the canine distally into the 1st premolar space. The optimum reactivation interval was evaluated regarding the efficiency of treatment in terms of rate of canine retraction, canine tipping and rotation, root resorption and pain at the intervals of 2, 4, 6 and 8 weeks. Three dimensional imaging, as well as digital scanning were the methods for data collection.


Description:

The canines, 2nd premolars, 1st molars and 2nd molars were bonded and banded. Leveling and alignment was achieved. After the first premolar extraction, temporary anchorage devices were inserted interradicular between 2nd premolar and 1st molar. Canine retraction was performed on a 0.016" X 0.022" stainless steel arch wire. A power arm was extended to apply the force closer to the center of resistance and achieve bodily movement. Elastomeric chains were calibrated to deliver a force of 150g and extended from the power arm to the mini screws directly. Recruited patients were randomly allocated to four groups according to the duration between the elastomeric chain reactivation. Canine reactivation intervals were 2, 4, 6, or 8 weeks. Cone beam computed tomography was performed before canine retraction and after 6 months of retraction. Digital dental casts were taken before canine retraction and monthly for 6 months.


Recruitment information / eligibility

Status Recruiting
Enrollment 56
Est. completion date June 1, 2022
Est. primary completion date June 1, 2022
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 13 Years to 30 Years
Eligibility Inclusion Criteria: - Patients requiring 1st premolar extraction (e.g bimaxillary dentoalveolar protrusion) - Erupted full set of permanent teeth (excluding 3rd molars) Exclusion Criteria: - Systemic diseases that would interfere with bone metabolism - Craniofacial syndromes - congenitally missing or extracted permanent teeth. - periodontally compromised patients - smokers - pregnant women - previous orthodontic treatment

Study Design


Intervention

Procedure:
Canine retraction
Canines will be retracted using short elastomeric chains. Force applied to canines will be 150g.

Locations

Country Name City State
Egypt Future University in Egypt Cairo

Sponsors (1)

Lead Sponsor Collaborator
Future University in Egypt

Country where clinical trial is conducted

Egypt, 

Outcome

Type Measure Description Time frame Safety issue
Primary Rate of canine retraction The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae. Baseline to 1 month
Primary Rate of canine retraction The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae. 1month to 2 months
Primary Rate of canine retraction The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae. 2 months to 3 months
Primary Rate of canine retraction The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae. 3 months to 4 months
Primary Rate of canine retraction The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae. 4 months to 5 months
Primary Rate of canine retraction The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae. 5 months to 6 months.
Secondary Amount of canine retraction The change in distance measured from the canine cusp tip to the frontal plane, in millimeters; measured on CBCT Baseline to 6 months
Secondary Canine tipping CBCT images at T0 and T1 were analyzed using Invivo 5 software. linear measurements were made from the long axis of the canines (cusp tip to root apex) to FP1 and FP2 for the upper and lower canines, respectively. Baseline to 6 months
Secondary Canine rotation The change in the angle between a line connecting the maximum mesial and distal crown convexities and FP1 and FP2, for the upper and lower canines, respectively; measured on CBCT Baseline to 6 months
Secondary Canine root resorption The change in the canine length, in millimeters, measured from cusp tip to root apex; measured on CBCT Baseline to 6 months
Secondary First molar anchorage loss The change in distance measured from the mesio-buccal cusp tip of the first molar to the frontal plane, in millimeters; measured on CBCT Baseline to 6 months
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable baseline to day 1
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable Baseline to day 2
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable Baseline to day 3
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable Baseline to day 4
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable Baseline to day 5
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable Baseline to day 6
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable Baseline to day 7
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable Baseline to day 8
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable Baseline to day 9
Secondary Pain score The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable Baseline to day 10.
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