Comparison of Activator-Headgear and Twin Block Treatment Approaches in Class II Division 1 Malocclusion

Figure 1

Points and plains used in cephalometric analysis: Gl′ (soft-tissue glabella), Prn (pronasale), Cm (columella), Sn (subnasale), Ls (labrale superius), Li (labrale inferius), Pg′ (soft-tissue pogonion), Pg (osseous pogonion), Gn (gnathion), Me (menton), Go (gonion), Ba (basion), Co (condylion), Po (porion), Pt (pterygoid point), S (sella), PNS (posterior nasal spine), ANS (anterior nasal spine), N (nasion), Or (orbitale), Ap + 1 (apicale superius), Ap − 1 (apicale inferius), In + 1 (incisale superius), In − 1 (incisale inferius), NSL (nasion-sella line), FA (facial axis), NL (nasal line), MP (mandibular plane), FH (Frankfort horizontal), E (Ricketts’ Esthetic line), and S (Steiner’s line).