Space Analysis Lab

Orthodontics / Undergraduate Laboratory

Arch

Model

Case

Space Available

PERMANENT DENTITION · MANDIBULAR ARCH · CROWDING CASE

Space Available = arch perimeter from the mesial of one first molar to the mesial of the other, over the contact points of posterior teeth and the incisal edges of anterior teeth.

المسافة المتاحة = طول القوس من السطح الإنسي للضرس الأول إلى السطح الإنسي للضرس الأول المقابل

Space Available

— mm

Space Available = the room in the ARCH. No teeth are measured here.

The value is the sum of four straight segments on the ideal arch line (see Lab steps). A curved wire reads slightly longer: 61.0 mm.