Only 5 of the 18 trials included in this review of headgear for the treatment of class II malocclusions were randomised while a short-term reduction of the SNA angle was noted the quality of the studies was high.
[read the full story...]Class II malocclusion- premolar extraction and soft tissue profile
This review looked at the impact of premolar extraction on soft tissue profile in class II division 1 malocclusions. 13 studies were included the majority being retrospective. There is some evidence to suggest an increase in the nasolabial angle but the quality is limited.
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