Accuracy and reliability of linear measurements using 3-dimensional computed tomographic imaging software for Le Fort I Osteotomy.
Our purpose was to compare the accuracy and reliability of linear measurements for Le Fort I osteotomy using volume rendering software. We studied 11 dried skulls and used cone-beam computed tomography (CT) to generate 3-dimensional images. Linear measurements were based on craniometric anatomical landmarks that were predefined as specifically used for Le Fort I osteotomy, and identified twice each by 2 radiologists, independently, using Dolphin imaging version 11.5.04.35. A third examiner then made physical measurements using digital calipers. There was a significant difference between Dolphin imaging and the gold standard, particularly in the pterygoid process. The largest difference was 1.85mm (LLpPtg L). The mean differences between the physical and the 3-dimensional linear measurements ranged from -0.01 to 1.12mm for examiner 1, and 0 to 1.85mm for examiner 2. Interexaminer analysis ranged from 0.51 to 0.93. Intraexaminer correlation coefficients ranged from 0.81 to 0.96 and 0.57 to 0.92, for examiners 1 and 2, respectively. We conclude that the Dolphin imaging should be used sparingly during Le Fort I osteotomy.
School of Dentistry, University of São Paulo, College of Dentistry, Department of Radiology, Av. Prof. Lineu Prestes, 2227, CEP 05508-900 São Paulo, SP, Brazil. Electronic address: bgaia@usp.br.
Bruno Felipe
BF
Gaia
School of Dentistry, University of São Paulo, College of Dentistry, Department of Radiology, Av. Prof. Lineu Prestes, 2227, CEP 05508-900 São Paulo, SP, Brazil.
Lucas Rodrigues
LR
Pinheiro
School of Dentistry, University of São Paulo, College of Dentistry, Department of Radiology, Av. Prof. Lineu Prestes, 2227, CEP 05508-900 São Paulo, SP, Brazil.
Otávio Shoite
OS
Umetsubo
School of Dentistry, University of São Paulo, College of Dentistry, Department of Radiology, Av. Prof. Lineu Prestes, 2227, CEP 05508-900 São Paulo, SP, Brazil.
Oseas
O
Santos
School of Dentistry, University of São Paulo, College of Dentistry, Department of Radiology, Av. Prof. Lineu Prestes, 2227, CEP 05508-900 São Paulo, SP, Brazil.
Felipe Ferreira
FF
Costa
School of Dentistry, University of São Paulo, College of Dentistry, Department of Stomatology, A. Prof. Lineu Prestes, 2227, CEP 05508-900 São Paulo, SP, Brazil. Electronic address: mgpcaval@usp.br.
Marcelo Gusmão Paraíso
MG
Cavalcanti
D000328:Adult; D059925:Anatomic Landmarks / Q000000981:diagnostic imaging; D002508:Cephalometry / Q000706:statistics & numerical data*; D054893:Cone-Beam Computed Tomography / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000706:statistics & numerical data; D021621:Imaging, Three-Dimensional / Q000706:statistics & numerical data*; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging; D008875:Middle Aged; D009296:Nasal Cavity / Q000000981:diagnostic imaging; D015588:Observer Variation; D019340:Osteotomy, Le Fort / Q000706:statistics & numerical data*; D056739:Pterygopalatine Fossa / Q000000981:diagnostic imaging; D015203:Reproducibility of Results; D012984:Software; D013100:Sphenoid Bone / Q000000981:diagnostic imaging; D055815:Young Adult
3D imaging; Cone-beam computed tomography; Osteotomy Le Fort; Tomography; X-ray computed