释义 |
S-N-A angle S-·N-·A an·glein cephalometrics, an angle measuring the anteroposterior relationship of the maxillary basal arch on the anterior cranial base; it shows the degree of maxillary prognathism. See also: subspinale. [sella-nasion-subspinale (or point A)] S-N-A an·gle (anggĕl) In cephalometrics, an angle measuring anteroposterior relationship of maxillary basal arch on anterior cranial base; shows degree of maxillary prognathism. |