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

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.