Influence of Invisalign treatment with interproximal enamel reduction (IER) on bone volume for adult crowding: a retrospective three-dimensional cone beam computed tomography study

Table 1 Reference points for establishing reference levels in the maxilla and mandible

Reference level	Analysis points	Positioning
Maxillary level	Emartrechts	Deepest point on the right articular tubercle
	Emartlinks	Deepest point on the left articular tubercle
	Nasion	Furthest anterior contour of the frontonasal suture
Mandibular level	MandPlre	Deepest point on the mandible in the area of the mandibular angle on the right
	MandPlli	Deepest point on the mandible in the area of the mandibular angle on the left
	MandPlvorne	Deepest point in the area of the ventral mandible

ISSN: 1472-6831