Observation deviation of the facial

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Observation deviation of the facial anterior
tooth midline
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I. Statement of Problem

• ?? anterior tooth? midline? facial midline?
  ?????? ?? ???
• ? ??? deviation???, ? ?? ???? ?? ???

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II.Purpose

• Anterior tooth midline? facial midline? ????? ??
  ??? deviation?? ???? ??

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III.Material Methods

• 10?? ???(5?? dentist, 5?? nondental person)? 45?
  ??? full facial view? ?? ? midline deviation???
  ????. ? ??? ???? ?????, ? ?? medial angle??? ????
  ??, ? ???? contact point?? ??? ????.

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• ? ??? 3 group? ?????,
• group 1 deviation?----1mm??
• group 2 deviation?----12mm??
• group 3 deviation?----2mm??
• ????? detection rate? 95???? ?? ????? ?????.

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IV.Results

• Deviation? ???? ??? dentist? non-dental person?
  ??? ?? ???. ??? 5??? ??? ?? ???? ?? combined???.

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Group? ??

• Group1(1mm??? deviation?)
• 10?? 6?? ????? 29?? ??? 4??? ??? ???.
  ---------?13
• Group2(12mm deviation?)
• 10?? 6?? ????? 8?? ??? 3??? ??? ???. --------?
  37
• Group3(2mm??? deviation?)
• 10?? 6?? ????? 6?? ??? 5??? ??? ???. --------?
  83

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??!!!

• Deviation? ?? ??? detection rate? ???!!!

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V.Discussion

• ?? ???? 2mm??? deviation? ?? ?? ???? ?? ??? ??
  ????.
• ? ??? dental? facial midline? ????? ? ??? ??????
  ? ????.
• ?? midline? ???? ?? ?? ??? ??? 2mm??? ?
  deviation? ????? ? ??? ???.

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Frush? Fisher? ???? ??? ???? ???? ?? ?

• 2mm???? ?? ???? midline? facial midline? ????
  ????? ??? ?? ?? ??? ?

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?? ???? ??? ?

1. ?? ??? ?? ???(45?? ?? ???? ???? ?? ?? ??)
2. ????? ??? ??? ??(????? detection??? ??? ??? ????
   ??? ????? ??)
3. ? ??? ??? ?? ???? ???. 2?? ??? ?? ?? ??? ?.

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VI.Conclusion

• ? ??? ?????, 10?? ???? ???? facial midline?
  anterior tooth midline? 2mm??? deviation? ?? ?
  ???? ???,
• Deviation? ?? 2mm????, detection rate? ?????.