Accuracy of cone beam computed tomography in determining the location of the genial tubercle

University of Texas at San Antonio, San Antonio, Texas, United States
Otolaryngology Head and Neck Surgery (Impact Factor: 2.02). 08/2007; 137(1):115-8. DOI: 10.1016/j.otohns.2007.02.035
Source: PubMed


To determine the accuracy of cone beam computed tomography (CT) to predict the location of the genial tubercle.
Cadaver study for anatomic analysis of 17 adult human cadaver heads. Each skull/cadaver head underwent radiographic imaging with cone beam CT and cadaver dissection. Measurements, including mandibular height (MH), genial tubercle width (GTW), genial tubercle height (GTH), distance from inferior border of mandible to genial tubercle (IBM/GT), and mandibular thickness (MT) were recorded.
Statistical analysis with paired t test showed no significant difference between cadaver dissections versus cone beam measurements. Ninety-five percent confidence intervals (CI) were as follows: GTW (-0.2 to 1.0), GTH (-0.1 to 0.9), distance IBM/GT (-0.8 to 5.0), MH (-1.3 to -2.6), and MT (-0.1 to 0.3).
These results show the accuracy of the 3D cone beam CT in the anatomic location of the genial tubercle.
This radiographic technique may prove useful in pre-operative planning for the mandibular osteotomy in genioglossus advancement procedures.

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    • "The three-dimensional reconstruction using CBCT examination proved to be useful for the volumetric evaluation and visualization of the mandible, in accordance with Rubira- Bullen et al. [16]. As found in our study, highly accurate location of genial tubercles using this investigation technique is sustained also by Hueman et al. [17]. "
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