Linear measurements (mm) | Abbreviations | Definition |
---|---|---|
Inter-canine | C-C′ | distance between the cusp tips of the canines. |
Intermolar | M-M’ | distance between the tips of the mesial-buccal cusps of the first molars. |
Arch length | I-M | perpendicular line of the distance between the contact point and the maxillary central incisors up to the intermolar line. |
Palate surface | – | Limits standardized: the upper limit was determined by inter-incisor papilla, the lateral limit was surrounded all marginal gingival limits of permanent teeth, and the posterior limit was the midpoint of the distal second molar. |
Volume | – | Limits standardized: the upper limit was determined by inter-incisor papilla, the lateral limit was surrounded all marginal gingival limits of permanent teeth, and the posterior limit was the midpoint of the distal second molar. |