orthodontia是什么意思_orthodontia怎么读_音标ˌɔ:θə'dɒnʃɪə

orthodontia是什么意思音标:英 [ˌɔ:θə'dɒnʃɪə]美 [ˌɔ:θə'dɒnʃɪr]

n. 正牙学, 畸齿校整术
[医] 正牙学

n the branch of dentistry deapng with the prevention or correction of irregularities of the teeth