Third Molar Impaction
Conditions
Keywords
distalization, premolar extraction, upper third molar, impaction of third molar
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.
Interventions
bilateral upper first premolar extraction orthodontic treatment with moderate anchorage.
Sponsors
Cairo University
Study design
Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
16 Years to 18 Years
Healthy volunteers
Yes
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.
Exclusion criteria
* Maxillary Premolar extraction cases requiring maximum anchorage preparation. * Low vertical dimension. * Patients without dentofacial deformities, severe facial asymmetries, microdontia or hypodontia.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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
| Measure | Time frame | Description |
|---|---|---|
| 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 |
Countries
Egypt
Outcome results
None listed