Basic information: Male, 15 years old
Examination: crowded dentition, narrowing of the upper and lower dental arches, deep overlying of the anterior teeth, deep coverage, coverage iii °, tilting of the lip of the upper jaw anterior teeth, lateral phytomy, open lip exposed teeth
Diagnosis: Ann's II Class I Classification
Correction ideas: to solve the protrusion, the degree of congestion is large, and the tooth extraction is required for correction
Treatment process: extraction of 14, 24, 34, 44, adduction of the upper and lower teeth, lowering the upper and lower anterior teeth, improving the protrusion, correcting the deep coverage of the deep overlay, while cooperating with the expansion of the arch to obtain more space and improve the stenosis of the dental arch. 65 pairs of invisalign, 14 months to complete the correction
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