Ultrasonography, lateral cephalometry and 3D imaging of the human masseter muscle

Naser-Ud-Din, S., Thoirs, K. and Sampson, W. J. (2011) Ultrasonography, lateral cephalometry and 3D imaging of the human masseter muscle. Orthodontics and Craniofacial Research, 14 1: 33-43. doi:10.1111/j.1601-6343.2010.01505.x

Author Naser-Ud-Din, S.
Thoirs, K.
Sampson, W. J.
Title Ultrasonography, lateral cephalometry and 3D imaging of the human masseter muscle
Journal name Orthodontics and Craniofacial Research   Check publisher's open access policy
ISSN 1601-6343
Publication date 2011-02
Year available 2010
Sub-type Article (original research)
DOI 10.1111/j.1601-6343.2010.01505.x
Volume 14
Issue 1
Start page 33
End page 43
Total pages 11
Place of publication Malden, MA, United States
Publisher Wiley-Blackwell Publishing
Collection year 2011
Language eng
Formatted abstract
Purpose - To develop prediction equations to assist the clinician to derive cephalometric norms from the non-invasive investigations of ultrasonography (US) and 3D imaging.
Setting and Sample Population - Adult volunteers from University of Adelaide participated in the study.
Methods - Eleven volunteers (eight women, three men; age range 22-30 years) were recruited for US and standard lateral radiographs measurements along with 3D facial imaging using a structured light technique. The three examinations were performed to assess the vertical and transverse dimensions of the face along with superficial masseter muscle dimensions. In total, 31 variables were statistically analysed for relationship among the three imaging modalities.
Results -
Pearson's correlation coefficients showed highly significant correlations between lateral cephalometric (Co-Go to R3-R4) and US (volume - thickness) variables (r = 0.92, p < 0.0001; r = 0.95, p < 0.0001, respectively). Strong correlations were also observed with Co-Go and masseter muscle area derived from US r = 0.81 (p = 0.01). Similarly, strong correlations were seen between gonion-menton (Go-me) and facial width from 3D imaging (r = 0.83, p = 0.003). A high statistical significance (p > 0.0001) for curvilinear measurements compared with linear counterparts was revealed with the paired t-test. Factor analyses provided meaningful interrelationships for predictive equations generated for lateral cephalometric variables from 3D image coordinates.
Conclusions -
This preliminary investigation suggests that useful clinical information for treatment planning and follow-up can be gathered without repeated exposure to ionizing radiation. For more robust predictive equations, a larger sample would be required to validate such a model. © 2010 John Wiley & Sons A/S.
Keyword Imaging
Masseter muscle
Predictive equations
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 25 NOV 2010

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Dentistry Publications
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Created: Sun, 20 Feb 2011, 00:02:09 EST