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AACD - American Academy of Cosmetic Dentistry
During proper articulation of the "S" sound, which of the following BEST describes the relationship of the incisal edges of the maxillary and mandibular incisors for the majority of patients?
Maxillary and mandibular incisors lightly touch each other
Maxillary and mandibular incisors closely approximate each other
Incisal edges lightly rest on the superior and anterior borders of the tongue
Incisal edges may be in a variety of relationships depending on the individual
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