Tomographic evaluation of the oropharynx
DOI:
https://doi.org/10.15448/1980-6523.2014.3.13277Keywords:
Oropharynx, cephalometry, tomography, constriction area, age.Abstract
Objective: To calculate the major constriction area of the oropharynx, using 3-dimensional images derived from cone beam computed tomography (CBCT), in order to: 1. Obtain normal level indexes according to the age group 2. Correlate the major constriction area of the oropharynx with its sagittal depth and its total volume.
Methods: Forty-one scans from the 3D-i-CAT computerized tomograph were evaluated by the software InVivoDental 5.0.
Results: The values of the major constriction areas of the oropharynx were obtained, related to the age. There was a positive strong correlation only for the oropharynx major constriction area and its total volume. The correlation between the oropharynx sagittal depth and its major constriction area was positive and moderate. In relation to its sagittal depth and its total volume, the correlation was positive and weak.
Conclusions: 1. To the age group 6-12 years, the values ranged from 52.03 to 194.37 mm2; to 13-18 years, ranged from 134.82 to 264.18 mm2, and to the age group >19 years, from 95.87 to 229.73 mm2; 2. The linear measurement of the sagittal depth of the oropharynx, as performed over lateral cephalometric radiographs, is not much reliable when compared to those achieved from tomographic images.
References
Alcazar NMPV, Freitas MR, Janson G, Henriques JFC, Freitas KMS. Estudo
cefalométrico comparativo dos espaços naso e bucofaríngeo nas más oclusões Classe I e Classe II, Divisão 1, sem tratamento ortodôntico com diferentes padrões de crescimento. R Dental Press Ortodon Ortop Facial 2004;9:68-76.
Kim Y, Hong J, Hwang Y, Park Y. Three-dimensional analysis of pharyngeal airway in preadolescent children with different anteroposterior skeletal patterns. Am J Orthod Dentofacial Orthop. 2010;137:306.e1-306.e11.
Grauer D, Cevidanes LS, Styner MA, Ackerman JL, Proffit WR. Pharyngeal airway volume and shape from cone-beam computed tomography: relationship to facial morphology. Am J Orthod Dentofacial Orthop 2009;136:805-14.
Nuernberg CHG, Vilella OV. Avaliação cefalométrica da orofaringe. Rev Odonto Ciência 2006;21:370-5.
Iwasaki T, Hayasaki H, Takemoto Y, Kanomi R, Yamasaki Y. Oropharyngeal airway in children with Class III malocclusion evaluated by cone-beam computed tomography. Am J Orthod Dentofacial Orthop. 2009;136:318.e1-9.
Couceiro CP, Vilella OV. 2D / 3D cone beam CT images or conventional radiography: Which is more reliable? Rev Dental Press Ortodon Ortop Facial 2010;15:40e1-8.
Moshiri M, Scarfe WC, Hilgers ML, Scheetz JP, Silveira AM, Farman
AG. Accuracy of linear measurements from imaging plate and lateral
cephalometric images derived from cone-beam computed tomography.
Am J Orthod Dentofacial Orthop. 2007;132:550-60.
Cattaneo PM, Bloch CB, Calmar D, Hjorsthoj M, Melsen B. Comparison
between conventional and cone-beam computed tomography-generated
cephalograms. Am J Orthod Dentofacial Orthop. 2008;134:798-802.
Cevidanes L, Oliveira AE, Motta A, Phillips C, Burke B, Tyndall D. Head
orientation in CBCT-generated cephalograms. Angle Orthod 2009;79:971-7.
Berco M, Rigali PH, Matthew M, DeLuca S, Anderson NK, Will LA. Accuracy and reliability of linear cephalometric measurements from conebeam computed tomography scans of a dry human skull. Am J Orthod Dentofacial. 2009;136:17.e1-17.e9.
Farman A, Scarfe W. Development of imaging selection criteria and
procedures should precede cephalometric assessment with cone-beam
computed tomography. Am J Orthod Dentofacial Orthop. 2006;130:257-65.
El H, Palomo JM. Airway volume for different dentofacial skeletal patterns. Am J Orthod Dentofacial Orthop. 2011;139:511-21.
Johnston CD Richardson A. Cephalometric changes in adult pharyngeal
morphology. Eur J Orthod. 1999;21:357-62.
Kollias I, Krogstad O. Adult craniocervical and pharyngeal changes –
a longitudional cephalometric study between 22 and 42 years of age.
Part II: morphological uvulo-glossopharyngeal changes. Eur J Orthod
;21:345-355.
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