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NON EXTRACTION TREATMENT
DIAGNOSTIC AND TREATMENT PLANNING PRINCIPLES
THE EXTRACTION DECISION
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activity addition alignment anchorage conditions Angle appliance arch wire bite bracket canines cephalometric changes Class Class II clinical close compared completed correct crowding crown dental directing distally effects elastics eruption evaluated example expansion extraction treatment face facial pattern force functional gram growth headgear hooks increase indicated inserted involves labial lateral less lingual loss lower arch lower incisor maintain malocclusion mandible mandibular maxillary arch maxillary incisors maximum means ment mesial midline mixed dentition models molars distally months move moved distally movement necessary non extraction normal noted occlusal occurs Orthod Orthod Dentofac Orthop orthodontic orthodontic treatment orthopedic overjet patients placed position post treatment posterior premolars problem procedures protraction reason reduced relapse relation relationship removable require resolve retainers retention retraction rotation second molars side slots space springs SS wire stability teeth tend tion tooth torque treated uprighting usually vertical