Integration accuracy of digital dental models and 3-dimensional computerized tomography images by sequential point- and surface-based markerless registration.
OBJECTIVE
The goal of this study was to evaluate the accuracy of the integration of computerized tomography (CT)-based bone models and laser-scanned dental models by sequential point- and surface-based markerless registration to create a digital maxillofacial-dental model.


METHODS
The integration accuracy was evaluated in normal skulls (group I) and subjects with maxillofacial deformities (group II) by measuring the distance between the integrated models (for group I and II) and between the final integrated model and the laser-scanned original skull model (for group I).


RESULTS
The average error ranged between 0 and 0.2 mm without statistically significant difference in the region of maxilla or mandible and in tooth location.


CONCLUSIONS
We could confirm that the integration can be made with good accuracy without the aid of fiducial markers for the maxillofacial-dental composite model from the different resolution of CT and dental models.
Kim
Bong Chul
BC
Armed Forces Chuncheon Hospital, ROK Army, Yonsei University, Seoul, Korea.
Lee
Chae Eun
CE
Park
Wonse
W
Kang
Sang Hoon
SH
Zhengguo
Piao
P
Yi
Choong Kook
CK
Lee
Sang-Hwy
SH
D002508:Cephalometry / Q000295:instrumentation* / Q000379:methods; D003198:Computer Simulation; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging; D008437:Maxilla / Q000000981:diagnostic imaging; D019767:Maxillofacial Abnormalities / Q000000981:diagnostic imaging / Q000601:surgery*; D003765:Models, Dental; D056948:Orthognathic Surgical Procedures / Q000295:instrumentation / Q000379:methods*; D010347:Patient Care Planning; D019252:Radiography, Dental, Digital / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult