Table 1 Cephalometric variables
From: Posterior teeth angulation in non-extraction and extraction treatment of anterior open-bite patients
Maxillomandibular relationship | |
SNA (°) | SN to NA angle |
SNB (°) | SN to NB angle |
ANB (°) | NA to NB angle |
Growth pattern | |
SN.PP (°) | SN to palatal plane angle |
SN.GoGn (°) | SN to Go–Gn angle |
PP.MP (°) | Angle between palatal plane(ANS/PNS) and mandibular plane(Go/Gn) |
FMA (°) | Frankfurt horizontal to mandibular plane angle |
Gonial angle (°) | Ar–Go to Go–Gn angle |
LAFH (mm) | Lower anterior face height: distance from ANS to menton |
Dental relationship | |
Overbite (mm) | Distance between the maxillary and mandibular incisor borders. |
Maxillary teeth mesio-distal angulations | |
Mx4.BOP (°) | Long axis (apex to tip) of maxillary 1st premolar to bisected occlusal plane (BOP) |
Mx5.BOP (°) | Long axis (apex to tip) of maxillary 2nd premolar to bisected occlusal plane (BOP) |
Mx6.BOP (°) | Long axis (furcation to center of the crown) of maxillary 1st molar to bisected occlusal plane (BOP) |
Mx7.BOP(°) | Long axis (furcation to center of the crown) of maxillary 2nd molar to bisected occlusal plane (BOP) |
Mx4.PP (°) | Long axis (apex to tip) of maxillary 1st premolar to palatal plane(ANS–PNS) |
Mx5.PP (°) | Long axis (apex to tip) of maxillary 2nd premolar to palatal plane (ANS–PNS) |
Mx6.PP (°) | Long axis (furcation to center of the crown) of maxillary 1st molar to palatal plane (ANS–PNS) |
Mx7.PP (°) | Long axis (furcation to center of the crown) of maxillary 2nd molar to palatal plane (ANS–PNS) |
Mandibular teeth mesio-distal angulations | |
Md4.BOP (°) | Long axis (apex to tip) of mandibular 1st premolar to bisected occlusal plane (BOP) |
Md5.BOP (°) | Long axis (apex to tip) of mandibular 2nd premolar to bisected occlusal plane (BOP) |
Md6.BOP (°) | Long axis (furcation to center of the crown) of mandibular 1st molar to bisected occlusal plane (BOP) |
Md7.BOP (°) | Long axis (furcation to center of the crown) of mandibular 2nd molar to bisected occlusal plane(BOP) |
Md4.MP (°) | Long axis (apex to tip) of mandibular 1st premolar to mandibular plane (Go–Gn) |
Md5.MP (°) | Long axis (apex to tip) of mandibular 2nd premolar to mandibular plane (Go–Gn) |
Md6.MP (°) | Long axis (furcation to center of the crown) of mandibular 1st molar to mandibular plane (Go–Gn) |
Md7.MP (°) | Long axis (furcation to center of the crown) of mandibular 2nd molar to mandibular plane (Go–Gn) |
Interdental angulations | |
Mx4.Md4 (°) | Long axis (apex to tip) of maxillary and mandibular 1st premolars |
Mx5.Md5 (°) | Long axis (apex to tip) of maxillary and mandibular 2nd premolars |
Mx6.Md6 (°) | Long axis (furcation to center of the crown) of maxillary and mandibular 1st molars |
Mx7.Md7 (°) | Long axis (furcation to center of the crown) of maxillary and mandibular 2nd molars |