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[The establishment of three-dimensional soft tissue facial reconstruction and morphometry].

OBJECTIVE
To establish a digital three-dimensional facial soft tissue morphometry and reconstruction system for orthodontic diagnosis and analysis of the facial soft tissue.


METHODS
Three-dimensonal characteristics of facial soft tissue were captured by 4 digital cameras of high resolution. The developed hardware and software system and stereophotogrammetry were used for three-dimensional facial soft tissue reconstruction and morphometry at the same time.


RESULTS
The three-dimensional facial soft tissue were successfully reconstructed with high reality and the three dimensional facial image can be rotated, moved and zoomed on the purpose. The system has the following advantages: (1) rapid capture of the facial image within 1 second or so, (2) accurate identification of facial landmark within 0.5 mm of resolution, (3) easy manipulation, (4) no exposure to radiation.


CONCLUSIONS
The established system has proved to be effective for three-dimensional facial soft tissue diagnosis and analysis with the advantages of high resolution, high speed and, no exposure to radiation.