Results and Conclusions After active treatment,the overjet correction was 6.5mm using reverse headgear. 40% of the overjet correction was due to skeletal changes and 60% due to dental changes.

• 结果 表明 ,在治疗刚刚结束时 ,覆盖增加 6 5毫米 ,其中 40%25为骨性变化 ,6 0%25为牙性代偿。