Class II Division 1 Malocclusion Clinical Trial
Official title:
Comparing Canine Retraction Using Two-week, Four-week, Six-week and Eight-week Reactivation Intervals
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.
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 |
Country | Name | City | State |
---|---|---|---|
Egypt | Future University in Egypt | Cairo |
Lead Sponsor | Collaborator |
---|---|
Future University in Egypt |
Egypt,
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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