A 7-year-old child has protruding chin, the lower lip overlaps the upper one. There are diastemas and tremas between the lower incisors, the lower incisors overlap the upper incisors by 2/3 of the crown height. First permanent molars demonstrate Angle's class III relation. Sagittal gap is 3 mm. The correct doctor's tactics will be to:

Answer options

1. Recommend a complex of myogymnastic exercises
2. Use Schwartz appliance
3. Use Angle’s apparatus
4. Use Bynin appliance
5. Use Bruckl’s appliance

Explanation

First of all, you should determine the diagnose protrudent chin, the lower lip overlapping the upper lip – are the typical facial signs for Mesial occlusion the lower incisors overlap the upper ones by 2/3 of crown height. Sagittal fissure is 3 mm are the typical facial signs at the examination of the oral cavity. Brueckl's appliance is recommended for children at 9-year.