Facial Proportions

Lower facial third should equal mid-facial third according to Leonardo da Vinci.

When teeth are extracted and the optimal natural bite is disturbed, then the jaw muscles can be out of harmony with the positions of the teeth. Under these conditions, tooth grinding and clenching can result and this frequently requires the fitting of a night appliance to take the load off the front teeth and prevent further wear.

Checking wear facets on the front teeth of a grinder.
	The teeth should fit like this.
Facial proportions – lower facial should equal 1/3, mid facial 1/3 - according to Leonardo da Vinci.
Checking the few points and chewing muscles

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