V2EX overjet

Overjet

释义 Definition

overjet(正畸学):指上前牙相对于下前牙在水平方向上的前突距离(通常以毫米计)。常用于评估咬合关系与牙齿排列;除正畸语境外,在航空等领域 jet 也可指“喷气”,但 overjet 最常见为牙科术语。

发音 Pronunciation (IPA)

/ovrdt/

例句 Examples

The dentist measured my overjet during the checkup.
牙医在检查时测量了我的前牙水平覆盖(overjet)。

A large overjet can increase the risk of trauma to the upper front teeth, especially in children.
较大的前牙水平覆盖(overjet)会增加上前牙受外伤的风险,尤其在儿童中更常见。

词源 Etymology

由 **over-**(“过度、在……之上”)+ jet(此处可理解为“突出、伸出”的形象表达)构成,用来描述上前牙“向前伸出”的程度;作为正畸测量术语,主要在现代牙科与正畸文献中固定化使用。

相关词 Related Words

文学与典籍 Literary Works

  • Contemporary Orthodontics(Proffit 等):在咬合分析与前牙关系章节中频繁使用 overjet
  • Orthodontics: Current Principles and Techniques(Graber / Vanarsdall / Vig 等):用于讨论诊断指标、治疗目标与风险评估。
  • Essentials of Orthodontics(各版本教材常见):作为基础测量概念介绍 overjetoverbite 的区别与临床意义。
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