Interceptive (mixed dentition) -- Interceptive (mixed dentition) -- Phase I treatment : class III skeletal and class i dental with posterior and anterior crossbites -- Class I skeletal and class i dental with blocked out maxillary canine : non-extraction -- Class I skeletal and class I dental with a deep bite -- Class I skeletal and class I dental with asymmetry : non-extraction -- Class II skeletal and class II dental : extraction of maxillary 1st premolars -- Class II skeletal and class II dental : non-compliant -- Class II skeletal and class II dental division 1 subdivision : four premolar extractions -- Class III skeletal tendency and class I dental : four premolar extractions -- Class III skeletal and class III dental : non-extraction and non-surgical -- Class III skeletal and class III dental : non-extraction -- Class III skeletal pattern and class II dental : non-extraction -- Class III skeletal and class I dental : four premolar extractions -- Class III surgical.