Misalignment of teeth between the upper and lower jaws can grind down the teeth and cause problems in chewing. Elsewhere, it is a cosmetic problem.
下颚间的牙齿咬合不正会磨损牙齿并造成咀嚼问题，此外，也会造成外表美观的问题。
Rather than a flexible lower jaw joint, they had a hinge between the upper jaws and the rest of the skull.
他们没有可活动的下颌关节，而是有一条筋腱连接着上颚和头骨。
Teeth of good size. Jaws strong with a perfect, regular and complete scissor bite, i. e. upper teeth closely overlapping lower teeth and set square to the jaws.
牙齿形状好，强壮的颌，完美的规则的剪刀状咬合，比如上齿紧紧覆盖下齿在口中构成三角形。
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