The principle of orthodontic tooth extraction (1) can not pull teeth will not pull teeth;
¢Ú If you want to pull out, look at the bad teeth (already loose teeth, tooth decay, bad shape of teeth);
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The second look at the function of the relatively minor teeth;
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(4) When the tooth is extracted, it is generally symmetrical, and 4 teeth are extracted;
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¢Ý The incisors and permanent molars will not be extracted to ensure the appearance and function.
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