Is there any medical term for a noticeably small mouth, as in contemporary pics of Henry VIII, like this one:?

https://www.google.co.uk/search?q=henry+viii+mouth&safe=strict&client=tablet-android-lenovo&prmd=ivsn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwif5q7cqI7KAhWMWRQKHVEUCC0Q_AUIBygB#imgrc=loJ4lE5-OPmZkM%3A

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