65.關於乳齒脫落的型式(the pattern of exfoliation)..-阿摩線上測驗
1F
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2F 庭 大一下 (2021/07/14)
乳牙脫落順序=恆牙萌發順序 補充: (除了2nd & 3rd molar外)上顎恆犬齒最晚萌發 aka 上乳犬齒最晚脫落; 第一大臼最先萌發(下正中門齒也是) ''After the 6-year molars erupt just prior to the child's sixth birthday, the order of eruption for the succedaneous teeth is essentially the same as the order of exfoliation of the primary teeth they replace. '' (Woelfel's Dental Anatomy 8th, pg171) |
3F ninine._.diar 高一下 (2022/07/14)
乳牙初始鈣化:胎中14-18週 (ADBCE) 乳牙完全鈣化:1.5~11月 [1歲前](ABDCE) 乳牙萌發:8~29月 [2歲半前] (ABDCE) 乳牙牙根完成:1.5-3歲 [3歲前]
乳牙脫落順序-上顎:ABDCE(由前至後) 乳牙脫落順序-下顎:ABCDE(由前至後脫落) -通常下顎早於上顎(除了第二乳臼齒一起脫落) -女快於男 |