[1]丁元凤. 成人骨性Ⅰ类与骨性Ⅱ类患者上切牙冠根比的比较[J].中国美容医学,2019,(10):124-125.
 DING Yuan-feng. Comparison of Crown-Root Ratio of Upper Incisors in Adult Patients with Skeletal Class I and Class Ⅱ Malocclusion[J].Medical Aesthetics and Beauty,2019,(10):124-125.
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 成人骨性Ⅰ类与骨性Ⅱ类患者上切牙冠根比的比较
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《中国美容医学》[ISSN:1008-6445/CN:61-1347/R]

卷:
期数:
2019年10期
页码:
124-125
栏目:
出版日期:
2019-10-05

文章信息/Info

Title:
 Comparison of Crown-Root Ratio of Upper Incisors in Adult Patients with Skeletal Class I and Class Ⅱ Malocclusion
文章编号:
1008-6455(2019)10-0124-03
作者:
 丁元凤
Author(s):
 DING Yuan-feng
关键词:
 [关键词]成人骨性Ⅱ类成人骨性I类牙冠长度牙根长度冠根比
Keywords:
 Key words: adult skeletal class Ⅰ adult skeletal class Ⅱcrown length root length crown to root ratio
分类号:
R783.5
文献标志码:
A
摘要:
[摘要]目的:探讨牙齿各部位长度及冠根比与骨面型的关系。方法:选取2018年1月-2019年1月来笔者医院正畸科就诊的成
人骨性Ⅰ类患者50例(Ⅰ组,其中男16例,女34例,平均年龄23岁),成人骨性Ⅱ类患者50例(Ⅱ组,其中男19例,女31
例,平均年龄25岁),比较成人骨性Ⅰ类患者与骨性Ⅱ类患者四个上牙齿长度、牙冠长度、牙根长度及冠根比,并做统计学
分析。结果:Ⅰ组与Ⅱ组牙齿长度比较差异无统计学意义(P >0.05),Ⅰ组与Ⅱ组牙冠长度、牙根长度及冠根比比较,差
异具有统计学意义(P <0.05)。结论:成人骨性Ⅱ类患者上切牙牙槽骨吸收较成人骨性I类患者偏大,临床需提高警惕。

Abstract:
Abstract: Objective To analyze the relationship between tooth length and crown to root ratio and skeletal type. Methods 50
skeletal class I patients (group I, 16 males, 34 females, mean age23) and 50 adult skeletal class Ⅱ patients (group Ⅱ, 19 males,
31 females, mean age 25) who visited the orthodontics department of our hospital from January 2018 to January 2019 were
selected.To compare the four upper tooth lengths, crown lengths, root lengths and crown to root ratios between adult patients
with skeletal class I and class Ⅱ malocclusion. Results There was no significant difference in tooth length between group I
and group Ⅱ (P >0.05), and the differences in crown length, root length and coronal root ratio between group I and group Ⅱ
were statistically significant (P <0.05). Conclusion The alveolar bone resorption of the upper incisor of the adult patients with
skeletal class Ⅱ is larger than that of the adult patients with skeletal class I.

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更新日期/Last Update: 2019-11-07