Development of a new orthodontic diagnostic method based on the CT data for patients with congenital craniofacial anomalies

2014 Fiscal Year Final Research Report

• Project/Area Number: 23593017
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthodontic/Pediatric dentistry
• Research Institution: The University of Tokyo
• Principal Investigator: SUSAMI takafumi 東京大学, 医学部附属病院, 准教授 (80179184)
• Co-Investigator(Kenkyū-buntansha): OHKUBO Kazumi 東京大学, 医学部, 講師 (10396715) ; SUGIYAMA Madoka 東京大学, 医学部, 助教 (90451814) ; UCHINO Natsuko 東京大学, 医学部附属病院, 特任臨床医 (30569637) ; OKAYASU Mari 東京大学, 医学部附属病院, 特任臨床医 (10610941) ; NAGAHAMA Kohei 東京大学, 医学部, 助教 (60401361) ; TAKAHASHI Naoko 東京大学, 医学部附属病院, 特任臨床医 (10569635)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 頭蓋顔面先天異常 / ＣＴセファロ / 矯正歯科診断 / craniofacial anomaly / CT-cephalogram / orthodontic diagnosis

Outline of Final Research Achievements

The morphological analyses for patients with congenital craniofacial anomalies have been performed using conventional cephalograms. However, the head posture setting at taking and the determination of the reference points and lines for analyses are difficult due to the facial anomalies and/or mental problems. Examination on the right and left side separately in cases with facial asymmetry is also difficult.
In this study, the method to make a two-dimensional cephalogram images from three-dimensional CT data was developed for patients with craniofacial anomalies, and the common coordinate system to three-dimensional CT and conventional cephalograms was determined. Using this method, cephalograms in the right and in the left side were depicted separately in asymmetrical cases and the jaw size in each side was measured. The average facial morphology was depicted in major craniofacial anomalies.

Free Research Field

矯正歯科学