The Effect of Different Treatment Modalities of Class II Malocclusion on Upper Third Molars.

Completed

• Conditions: Third Molar Impaction
• Interventions: Other: extraction orthodontic treatment

• Registration Number: NCT06098885
• Lead Sponsor: Cairo University

Brief Summary

What is the effect of the different treatment modalities (distalization versus upper premolar extraction) of class II malocclusion on the position, inclination and incidence of impaction of the upper third molars?

Detailed Description

What is the effect of the different treatment modalities (distalization versus upper premolar extraction) of class II malocclusion on the position, inclination and incidence of impaction of the upper third molars? Pico P: Adolescent patients with class II malocclusion having bilateral developing upper third molars.

I: bilateral upper first premolar extraction orthodontic treatment with moderate anchorage.

C: distalization orthodontic treatment. O: Primary: angulation of the maxillary third molars.

Study Timeline

• Study Start: 2021-09-04
• Study First Submitted: 2021-09-08
• Primary Completion: 2023-06-04
• Study Completion: 2023-06-04
• Status Verified: 2023-10
• Study First Submitted QC: 2023-10-22
• Last Update Submitted: 2023-10-22
• Study First Posted: 2023-10-25
• Last Update Posted: 2023-10-25

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 46

Inclusion Criteria

• Adolescent males and females (16 -18 years) with Bilaterally developing maxillary third molars. Not more than two thirds of the root development of the third molars had taken place.
• Class II malocclusion cases that were treated by 1) maxillary premolar extraction with a moderate anchorage requirement and achieved full unit class II molar relationship or 2) Distalization treatment plan and class I molar relationship was achieved.
• Patients with high-quality pre- and post-treatment radiographs.
• Normal or increased vertical dimension.

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Exclusion Criteria

• Maxillary Premolar extraction cases requiring maximum anchorage preparation.
• Low vertical dimension.
• Patients without dentofacial deformities, severe facial asymmetries, microdontia or hypodontia.

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
extraction treatment	extraction orthodontic treatment	patients treated with bilateral upper first premolar extraction orthodontic treatment with moderate anchorage.

Primary Outcome Measures

Name	Time	Method
The angulation of the maxillary third molars.	up to 24 weeks.	the angle between the long axis of the third molar and the palatal plane

Secondary Outcome Measures

Name	Time	Method
The vertical position of the third molars	up to 24 weeks	the vertical position of the third molar relative to the second molar measured using Archer classification tool. (qualitative measure)
The mineralization status of the third molars	up to 24 weeks	the amount of calcified tissues of the third molar measured using Demirjian classification method

Trial Locations

Locations (1)

Amira Aboalnaga; 🇪🇬 Cairo, Egypt