Malocclusion, Angle Class II, Division 1
Conditions
Keywords
Airway, Myobrace, Twinblock
Brief summary
The goal of this clinical trial is to compare the pharyngeal airway changes after treatment with Myobrace and after treatment with Twinblock in developing skeletal Class II patients. The main question it aims to answer is: Is the efficacy of the twin-block Vs Myobrace appliances in the improvement of pharyngeal airway dimensions in adolescents having skeletal Class II malocclusion with retrognathic mandible utilizing sagittal pharyngeal airway area measurements.
Interventions
DEVICEMyobrace Functional Appliance
An Appliance for treating growing Class II patients with mandibular deficiency
DEVICETwin Block
An Appliance for treating growing Class II patients with mandibular deficiency
Sponsors
Alexandria University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
9 Years to 12 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy children * 9-12 Years * Skeletal Class II with mandibular defeciency and normal maxillary growth depending on clinical diagnosis and confirmed with lateral cephalometric x-reay readings ( ANB angle \>4 and SNA angle \<78)
Exclusion criteria
* Previous Orthodontic treatment * Previous extractions * mandibular shifts * Severe Crowding * Anterior open bite * Any perioral habits
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| SNA | Six months | Angle formed between points Sella, Nasion and A point and describes anteroposterior position of the maxilla relative to the anterior cranial base. |
| SNB | Six months | Angle formed between points Sella, Nasion and B point and describes anteroposterior position of the mandible relative to the anterior cranial base. |
| ANB | Six months | Angle formed between points A, Nasion and B point indicating the skeletal relationship between the maxilla and the mandible. |
| Witts appraisal | Six months | The linear distance between the perpendicular projections of points A and B over the functional occlusal plane. |
| FMA | Six months | Angle formed between mandibular plane and Frankfort horizontal plane. |
| Pharyngeal air way area measurement | Six months | The upper border of Naso Pharyngeal air way area will be delineated by a line extending from the harmonium (H) to the posterior nasal spine. The lower extent of the NPAA will be traced by marking a line at the tip of the soft palate parallel to the Frankfort horizontal (FH) plane extending to the posterior wall of the pharynx. The OPAA and LPAA are differentiated by a line drawn at the level of the tip of epiglottis parallel to the FH plane to the posterior wall of the pharynx. The lower border of the LPAA is defined as a line drawn parallel to FH plane and passing through the anteroinferior most point (C5AI) of the fifth cervical vertebra. Area will be measured. |
Countries
Egypt
Outcome results
None listed