. Author manuscript; available in PMC: 2013 May 1.

Published in final edited form as: Angle Orthod. 2012 Oct 8;83(3):376–380. doi: 10.2319/071112-573.1

Table 2.

The Angulation of Mandibular Third Molars to the Long Axis of Adjacent Second Molars at the Initiation of Orthodontic Treatment Compared by Anatomic Side and First or Second Premolar Removal or No Premolar Removed^a

	Angulation All Right Third Molars, Mean (SD), degrees	Angulation All Left Third Molars, Mean (SD), degrees
First premolar removal	33.6 (14.4)	37.3 (16.0)
Second premolar removal	35.7 (12.6)	33.7 (14.4)
No premolar removed	32.7 (10.6)	36.6 (14.1)

Prior to treatment, the average third molar angulation did not differ significantly between the right and left side (P = .19), nor did the average pretreatment angulation differ among the three extraction groups (P = .97).