CompletedNot Applicable

The Efficacy of Tow Mechanics for Total-maxillary-arch-distalization

Syria48 participantsStarted 2022-05-20

Plain-language summary

Patients with class II division 1 malocclusion who have increased overjet will be treated in this study. The efficacy of one-jaw and tow-jaw mechanics for mini-implants anchored total-maxillary-arch-distalization in the treatment of class II division 1 malocclusion will be assessed. The skeletal, dental and soft tissues changes resulted by these tow interventions will be studied. As well as, the pain levels, oral-health related quality of life during all stages of the treatment and the smile components will be explored and compared with the traditional treatment results of this type of malocclusion (en-mass retraction with first premolars extraction). There are three groups : 1. a group of patients in which participants will be undergo to the one-jaw mechanic for mini-implants anchored total-maxillary-arch-distalization (mini-implants in the maxillary arch). 2. a group of patients in which participants will be undergo to the tow-jaw mechanic for mini-implants anchored total-maxillary-arch-distalization (mini-implants in the mandibular arch with class II elastics). 3. a group of patients in which participants will be undergo to the en-mass retraction with first premolars extraction with mini-implants in the maxillary arch.

Who can participate

Age range17 Years – 30 Years

SexALL

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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Adult patients with permanent occlusion at age 18-30 years. * Comprehensive medical and dental history ruling out any systemic disease * Not under any systemic medication. * No previous orthodontic treatment * Patients with satisfactory periodontal health and Good oral hygiene * Need to orthodontic treatment with fixed appliances * No congenitally missing teeth except third molars in the maxillary arch * Mild or no anterior crowding in maxillary arch. * Patients with class Ⅱ division 1 (ANB angle ≤7 degrees) with severe overjet (5-9 mm) * Maximum retraction of the anterior teeth was desired. Exclusion Criteria: * Patients with previous orthodontic treatment. * Patients with severe skeletal dysplasia in all three dimensions. * Patients suffer from systemic diseases or syndromes * Patients on medication for systemic disorders, pregnancy or steroid therapy. * Patients showing any signs of active periodontal disease * Patients with severe crowding (≥ 3.5 mm) in maxillary arch * Patients with missing or extracted teeth in maxillary arch except third molar.

What they're measuring

1

Duration of the treatment

Timeframe: duration (in months) between T0: the beginning of active treatment, T1: when a normal overjet and canines class I relationships achieved. (expected to be within 6 months in the exp. groups and 8 months in the control group)

2

Change in the Incisors' positions