CompletedNot Applicable

Evaluation of Upper Anterior Teeth Retraction Rate Assisted by Two Corticotomy Techniques

Syria40 participantsStarted 2017-06-09

Plain-language summary

This study aims to assess the dental changes, periodontal health and the pulp vitality in mini-screw supported en-masse retraction associated with traditional or flapless corticotomy techniques. 40 adult patients exhibiting class II division 1 malocclusion requiring upper first premolar extractions followed by en-masse retraction will participate in the study. They will be randomly and equally distributed into two groups: traditional corticotomy (20 patients) versus flapless corticotomy (20 patients). The corticotomy procedure will be performed pre-retraction. The dental changes will be assessed using dental casts. The impressions will be taken after finishing the leveling and alignment phase and before starting the en-masse retraction (T0), 1 month (T1), 2 months (T2), 3 months (T3), 4 months (T4), and 5 months (T5) following the onset of en-masse retraction. The final impression will be considered at the end of the en-masse retraction (when the canines reach Class Ι relationship).

Who can participate

Age range18 Years – 30 Years

SexALL

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Inclusion criteria

✓. Age range between 18 and 30 years.
✓. Class II division 1 malocclusion requiring extraction of upper first premolars.
✓. Mild to moderate skeletal class II malocclusion.
✓. Normal or excessive anterior facial height.
✓. No or mild crowding (tooth-size arch-length discrepancy ≤3 mm).
✓. Overjet \>5 mm and \<10 mm.
✓. Completion permanent dentition (regardless of third molars).
✓. No previous orthodontic treatment.

Exclusion criteria

✕. Patients with previous orthodontic treatment.
✕. Patients with severe skeletal dysplasia in all three dimensions.
✕. Patients suffer from systemic diseases or syndromes

What they're measuring

The rate of en-masse retraction of upper anterior teeth.

Timeframe: The calculation of the rate of retraction will be done once the retraction procedures finish. It is expected to happen within 5 months

Change in the anteroposterior movement of the molar at 5 months

Timeframe: T0:1 day before the beginning of the retraction phase. T1: after 1 month of the beginning of retraction phase . T2: after 2 months. T3: after 3 months. T4: after 4 months. T5: immediately after the end of retraction phase (expected to be after 5 months)

Change in the inter-canine width at 5 months

Change in the inter-molar width at 5 months

Trial details

NCT IDNCT04847492

SponsorDamascus University

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2018-01-01

View on ClinicalTrials.gov More Class II Division 1 Malocclusion trials