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題 名 | Crown Diameters of the Deciduous Teeth of Taiwanese=臺灣孩童之乳牙牙冠直徑大小之探討 |
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作 者 | 劉惠仙; 董醒任; 楊奕馨; | 書刊名 | The Kaohsiung Journal of Medical Sciences |
卷 期 | 16:6 2000.06[民89.06] |
頁 次 | 頁299-307 |
分類號 | 417.692 |
關鍵詞 | 臺灣; 孩童; 乳牙; 牙冠直徑; Crown diameters; Deciduous teeth; Taiwanese; |
語 文 | 英文(English) |
中文摘要 | 本報告目的在於探討南台灣幼童之乳牙牙冠直徑大小之特性,與其他 不同種族或地區幼童之乳牙牙冠大小做一比較。而且由於不同種族之牙冠直徑大 小各有差異,臨床上採用歐美種族之乳牙牙冠之直徑大小而製成的不�袟鶡走洧� 牙牙套,有時極為耗時,因而本報告可提供牙齒測量學的基本資料庫,以作為將 來製作中國人專屬之不�袟鶡走洧聾�牙套之參考。研究對象為90名三到六歲幼 童(51名男孩,39名女孩),利用藻膠印膜再灌取石膏模型,然後在模型上以電動 游標尺量取每顆乳牙牙冠之近遠心及頰舌向之最大直徑;並以統計方式觀察左右 兩側之對稱性、性別上之差異與同質二形性。結果顯示左右兩側乳牙牙冠直徑有 極高的相關性(r=0.70-0.96),而僅有上顎乳犬齒及乳臼齒之左右近遠心牙冠直徑 (P<0.001)及下顎乳臼齒之頰舌向牙冠直徑(p<0.05)有顯著之差異。至於性別方 面,無論是近遠心或頰舌向,男孩較女孩之牙冠直徑來的大,但其差異除了下顎 第二乳臼齒之頰舌向牙冠直徑外,都無統計學上意義。就性別同質二形性而言, 比值越高代表性別差異越大,近遠心牙冠直徑之比值為0.09-1.94,而頰舌向牙冠 直徑比值為0.04-2.86,下顎第二乳臼齒之牙冠直徑是性別差異最明顯之乳牙。若 與其他不同種族或地區做一比較,本研究所得之乳牙近遠心牙冠直徑比澳洲原住 民、台灣原住民及香港華人來的小,但大於美國白種人;而頰舌向牙冠直徑則小 於冰島、西印度及白種人。 |
英文摘要 | The purposes of this study were (1)to characterize the crown diameters of the deciduous teeth of Taiwanese;(2)to compare the differences in the deciduous crown diameters between different populations. The results might provide odontometric information in making preformed stainless steel crowns of the Chinese population. Study casts of 90 children(51 boys and 39 girls) of aged 3 to 6 years were used in this study. The maximum mesiodistal crown diameter(the greatest distance between the contact points of the approximal surfaces) and the buccolingual crown diameter(the greatest distance at a right angle to the mesiodistal measurement)were obtained by using an electronic digital caliper.Significant differences between antimeres were found in the mesiodistal diameters of maxillary canine and maxillary molars(p<0.001)as well as in thebuccolingual diameters of mandibular molars(p<0.05). Excellent correlations between the antimeres of the corresponding teeth were found(r=0.70 to 0.96). Boys generally had larger crown diameters than girls with the exception of mesiodistal diameters of maxillary and mandibular canines, and mandibular lateral incisor, whereas the statistically significant gender difference was only found in the buccolingual diameter of mandibular second molar(p<0.05). The higher the percentage of sexual dimorphism, the larger the gender differences. The percentage of sexual dimorphism ranged from 0.09 to 1.94 for mesiodistal diameters and 0.04 to 2.86 for buccolingual diameters. The mandibular second molar was the most dimorphic tooth. Variations in the crown diameters of the deciduous teeth existed among and within different populations. Deciduous mediodistal crown diameters of Taiwanese were, in general, smaller than those of Australian aborigines, Taiwan Chinese aborigines, and Hong Kong Chinese, but larger than those of American whites. When considering the buccolingual crown diameters, our data were significantly smaller than those of Icelanders, western Indians, and whites. |
本系統中英文摘要資訊取自各篇刊載內容。