The calculating formulas on the main curvature and curvature radius of CAM and face tooth are deduced, and the calculating examples are presented.

推导了空间凸轮和端齿的主曲率和主曲率半径的计算公式，给出了计算实例。

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Several studies have found that smokers do not heal as well after surgeries such as face-lifts, tooth extractions, and periodontal procedures.

多项研究发现烟民在拉皮、拔牙和牙周手术等外科手术后恢复不如人意。

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Her face was(all) puffed up with the infection in her tooth .

她的牙齿发炎，使得她整个脸都肿胀起来了。

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Mr Rogerson said he had a scarf over his face during the incident because a tooth filling had dropped out and the "cold air was getting in".

BBC: Man 'disgusted' at Tyne-Wear derby police horse attack

Usually patients have less serious mutations: a single front tooth or a slightly deformed face.

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