A.牙齒 B.咀嚼肌 C.下頜骨 D.雙側(cè)顳頜關(guān)節(jié) E.上頜骨
A.20~30mm B.30~40mm C.40~60mm D.50~60mm E.以上都不對(duì)
A.30mm B.30~39mm C.40mm D.>40mm E.>50mm