Orthodontics
Conditions
Keywords
skelatal open bite, posterior intrusion
Brief summary
A Randomized clinical trial comparing two different force magnitudes in maxillary posterior segment intrusion in adult patients with skeletal open bite malocclusion
Detailed description
This randomized controlled trial is aiming to study the effect of the different force magnitude on maxillary posterior segment intrusion. Two groups are going to be allocated and the amount and rate of intrusion will be measured and compared.
Interventions
DEVICEIntrusion by 400 g
using miniscrews and coil springs to apply the intrusive force on maxillary posterior segment intrusion.
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
15 Years to 25 Years
Healthy volunteers
Yes
Inclusion criteria
* Adult patients with an age range from 17 to 25. * Skeletal open bite. * Dental open bite that is due to overgrowth of maxillary posterior segment as seen clinically and that can be corrected without surgical intervention (a minimum of 3 mm and a maximum of 8 mm). * Skeletal class I or mild to moderate skeletal class II that enables camouflage treatment. * Normal incisor show on smiling (that makes the case indicated for molar intrusion and not for incisor extrusion). * Full set of maxillary posterior dentition (first and second premolars, first molars at least). * No previous orthodontic treatment.
Exclusion criteria
* Medically compromised patients. * Patients suffering from any congenital or hereditary diseases. * Smoking or any systemic diseases. * Chronic use of any medications including antibiotics, phenytoin, cyclosporin, anti-inflammatory drugs, systemic corticosteroids, and calcium channel blockers.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Amount of intrusion | 6 months | The amount the upper posterior teeth have been intruded. |
| Rate of bite closure | 6 months | The rate by which the open bite closes as a result of posterior segment intrusion |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Average rate of intrusion | 6 months | The amount of intrusion divided by the duration of intrusion |
| Root resorption | 6 months | The amount of root resorption as a result of the intrusive force |
| Tipping | 6 months | The amount of mesiodistal and buccolingual tipping of posterior teeth |
Countries
Egypt
Outcome results
None listed