updated: 牙齿矫还是不矫， 这是个问题

大约在半年前俺应该在这里咨询过娃儿是否矫正牙齿的问题，起因是第一次洁牙师说娃儿牙齿不够完美。

最近又去洗牙，这次同一个洁牙师专门跟牙医讨论了这个问题，结果娃儿回来告诉俺，牙医大概是这么说的：这孩子牙齿很好，overbite 只有10%呢！不用矫正牙齿！

高兴之余，俺仔细研究了这个比例是啥意思，原来呀，一般正常overbite 就是3-5mm，即20-30%，超过这个的才会考虑矫正牙齿的问题，而俺娃天生只有10%，几乎算是没有overbite了，自然远远不需要了矫正牙齿了，太好了 ！！！！！！

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Overbite

From Wikipedia, the free encyclopedia

 

Overjet or horizontal overlap.

Overbite medically refers to the extent of vertical (superior-inferior) overlap of the maxillary central incisors over the mandibular central incisors,^[1] measured relative to the incisal ridges.^[2]

The term overbite does not refer to a specific condition, nor is it a form of malocclusion. Rather an absent or excess overbite would be a malocclusion. Normal overbite is between 3–5 mm (or approximately 20–30% of the height of the mandibular incisors) and is commonly expressed as a percentage.

Young children commonly have a deep bite (excessive overbite), it is not resolved during the normal growth of the maxilla and the mandible and can get worse with time. If it is not corrected it may lead to trauma and shortening the length of the teeth due to wear and the biting edges.^{[citation needed]}