Dental Malocclusion
Conditions
Keywords
molar intrusion, open bite, mini-screws
Brief summary
Compare between bi-maxillary (maxillary and mandibular) posterior dento-alveolar intrusion and maxillary posterior dento-alveolar intrusion as regards open bite closure.
Detailed description
Now, maxillary posterior dento-alveolar intrusion has been validated as a conservative treatment modality for treatment of skeletal open bite in adult patients. However, it was proved that mandibular posterior teeth extrusion take place during the treatment which results in reduction in the amount of open. bite closure. Therefore, the aim of our study is to compare in a randomized clinical trial methodology between maxillary posterior dento-alveolar intrusion and combined maxillary and mandibular posterior dento-alveolar intrusion in terms of anterior open bite closure.
Interventions
PROCEDUREMaxillary posterior dento-alveolar intrusion
Mini-screw supported maxillary or bi-maxillary posterior dento-alveolar intrusion
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
17 Years to 25 Years
Healthy volunteers
No
Inclusion criteria
* Skeletal open bite with a dental open bite ranging from 3-8 mm. * Adequate incisal show at rest and on smiling * Full set of posterior teeth from first premolar to second molar (with the exception of one tooth in one quadrant).
Exclusion criteria
* Dental open bites without skeletal components * Previous orthodontic treatment * Medically compromised patients
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Anterior open bite closure | 6 months | The amount of overbite gained as a result of posterior dento-alveolar intrusion |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Maxillary posterior teeth intrusion radiographically in millimeters. | 6 months | The distance travelled by maxillary premolars and molars of the right and left sides to a reference plane |
| Mandibular posterior teeth intrusion radiographically in millimeters. | 6 months | The distance travelled by mandibular premolars and molars of the right and left sides to a reference plane |
| Tip and torque of intruded teeth radiographically in degrees. | 6 months | • Torque change is measured as the change in the angle between the long axis of the intruded teeth and the FH plane (for tip) mid-sagittal plane (for torque). |
Countries
Egypt
Outcome results
None listed