Title:
歯周病の計測方法及び同計測装置。
Document Type and Number:
Japanese Patent JP5732535
Kind Code:
B2
Abstract:
The method for periodontal disease measurement of the present invention includes: using a plurality of cross-sectional images provided by x-ray CT images of teeth and periodontal tissues to detect a contour of each tooth in each cross-sectional image, detect a dentition, and provide a dental formula; detecting the positions of the root apex, the alveolar crest, and the crown of each tooth from the detected tooth contour data; calculating at least one of a distance indicator, a volume indicator, a surface area indicator, a first moment indicator, a center-of-gravity indicator, and an alveolar bone indicator from the detected tooth contour data, and the position data of the root apex, the alveolar crest, and the crown of the tooth; and measuring the progression of periodontal disease based on at least one calculated indicator.
Inventors:
Hironobu Tsuji
Akitoshi Katsumata
Shinya Saito
Volevic Vladimir
Kazushi Suzuki
Akitoshi Katsumata
Shinya Saito
Volevic Vladimir
Kazushi Suzuki
Application Number:
JP2013526801A
Publication Date:
June 10, 2015
Filing Date:
July 12, 2012
Export Citation:
Assignee:
Media Co., Ltd.
International Classes:
A61B6/03; A61B6/14
Domestic Patent References:
| JP2011098047A | ||||
| JP2008237895A | ||||
| JP2009226016A | ||||
| JP2001333898A | ||||
| JP2009226096A |
Attorney, Agent or Firm:
Eizo Tomono
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