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. 2017 Jan-Mar;11(1):64-70.
doi: 10.4103/1305-7456.202630.

Correlation between frontal sinus dimensions and cephalometric indices: A cross-sectional study

Azita Tehranchi  1 , Saeed Reza Motamedian  2 , Sara Saedi  3 , Sattar Kabiri  2 , Shireen Shidfar  4
Affiliations

Correlation between frontal sinus dimensions and cephalometric indices: A cross-sectional study

Azita Tehranchi et al. Eur J Dent. 2017 Jan-Mar.

Abstract

Objective: Growth prediction plays a significant role in accurate diagnosis and treatment planning of orthodontics patients. It was hypothesized that the unique pattern of pneumatization of the frontal sinus as a component of craniofacial structure would influence the skeletal growth pattern and may be used as a growth predictor.

Materials and methods: A total of 144 subjects (78 females and 66 males) with a mean age of 19.26 ± 4.66 years were included in this retrospective study. Posterior-anterior and lateral cephalograms (LCs) were used to measure the frontal sinus dimensions. The skeletal growth pattern and relations of craniofacial structures were analyzed on LC using variables for sagittal and vertical analyses. Correlation between the frontal sinus dimensions and cephalometric indices was assessed by the Pearson's correlation coefficient.

Results: The SN-FH and SNA angles had significant associations with frontal sinus dimensions in all enrolled subjects (P < 0.05). In males, the SN-FH, sum of posterior angles, Pal-SN, and Jarabak index were significantly associated with the size of frontal sinus (P < 0.05). In females, the associations of SN-FH and gonial angles with frontal sinus dimensions were significant (P < 0.05).

Conclusion: The results show that larger size of frontal sinus was associated with reduced inclination of the anterior cranial base, increased anterior facial height (in males), and increased gonial angle (in females) in the study population.

Keywords: Analysis; anatomic variation; cephalometry; frontal sinus; radiography.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
A sample case of frontal sinus measurement and cephalometric analysis. (a) Landmarks on lateral cephalogram. (b) Frontal sinus traced on posterior-anterior cephalogram. (c) Measurement of sinus dimensions on the sagittal plane. (d) Measurement of sinus dimensions on the coronal plane
See this image and copyright information in PMC

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