Objective: Statistical analysis of mandibular molar mesiodistal crown width and tooth length and development of root.

目的：统计分析下颌第一、第二、第三磨牙牙冠近远中宽度、牙体长度、分根情况以及相关因素。

youdao

Objective to investigate the difference between digital periapical film and conventional film in the evaluation of tooth length and root resorption.

目的探讨数字化根尖片和普通根尖片在评价牙齿长度和牙根吸收方面的差异。

youdao

Objective To investigate the differences of periapical films in bisecting angle technique and in distant paralleling technique on evaluation of tooth length.

目的探讨前磨牙区分角投照根尖片和平行投照根尖片在评价牙齿长度方面的差异。

youdao

You should always introduce the floss at the top of the tooth, in the gum line, and bring it down, then remove it and find an unused length for the next tooth.

WSJ: How to Be a Better Flosser

His hair is short in length and is grey on the sides, while his front-left tooth has a chip in it.

BBC: Owain Roberts