Borders of major connectors adjacent to gingival crevices, should be no closer to the crevice
than?
(A) 1-2 mm (B) 2-3 mm (C) 3-6 mm (D) 7-10 mm
(C) In maxillary arch, border of major connector must be no closer than 6 mm to gingival crevices of teeth.
In mandibular arch, border of major connector must be no closer than 3 mm to gingival crevices of teeth.