Relating to or affecting both the teeth and the nose; involving both dental and nasal structures or regions.
From Latin 'dentis' (tooth) + 'nasalis' (relating to the nose, from 'nasus'). This anatomical term combines two facial structures.
Dentists pay attention to dentonasal relationships because severe dental infections can actually spread into nasal passages and sinuses—it's one of the reasons untreated abscesses are so dangerous, as infection can climb right up from tooth to brain.
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