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Which statement is not correct about transverse facial proportions?

Transverse dimensions of the upper arch should be proportionate to width of the face. An ideal upper arch width is wide enough to eliminate buccal corridors.

How we should evaluate the patient midlines?

Trauma associated with scratching and erosion of the skin is classified as a [type1] lesion.

According to Proffit, up to _________________ of facial convexity is NORMAL.

An Absolute Posterior Crossbite exist in Class I jaw relationships. A relative Posterior Cross bite exists because of A-P discrepancy.

Space available is the sum of the teeth mesio-distal masses. Space required is the arch circumference or the arch perimeter distance.

The possible etiology of the black triangle is:

Which statement describes the definition of the smile arc?

When evaluation the lower third proportion, what should we see in a normo-divergent patient?