A Comparison of the Effectiveness of Two Types of Myofunctional Appliances

A Comparison of the Effectiveness of Two Types of Myofunctional Appliances: A Randomized Clinical Trial

A randomized clinical trial is set out to compare the effectiveness of two types of functional appliances in the correction of a Class II malocclusion. (Class II malocclusions are where upper front teeth bite significantly further forward in relation to lower front teeth).

It is a multicenter randomized clinical trial with two arms parallel group. The patients will be randomly divided into two groups, group one: Myobrace appliance will be used while, and group two Twin-block appliances will be used. Cephalometric x-ray will be taken before starting the treatment (T1) and at the end of treatment (T2) at 9 months. The effectiveness of the two appliances will be assessed and measured comparing the difference in the cephalometric X-ray before and after treatment.

Inclusion Criteria:

1. Growing children who need myofunctional appliance.
2. Cl II div. 1 malocclusion.
3. No previous orthodontic or orthopaedic treatments.

Exclusion Criteria:

1. Patients with systemic involvement.
2. Congenital malformations such as cleft lip and palate.
3. Facial deformities.
4. Finger sucking habit will be excluded