Research Article
Dental and Skeletal Changes after Transpalatal Distraction
Table 2
Reference points and their respective segments in frontal cephalograms.
| Reference point | Segment |
| Lateral border of the pyriform aperture at the base of the inferior concha | W3 | Lateral maxillary wall at the base of the zygomaticoalveolar crest | W2 | Buccal surface of the second maxillary molar | W1 |
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