Search

Objective: To investigate the accurate volume changes in the paranasal sinus and nasal cavity with age development, using three-dimensional (3D) imaging software METHODS: Paranasal sinus and nasal cavity volumes from computed tomography (CT) images in patients aged 0-24 years were measured using a 3D model to examine age-related changes. Paranasal sinus and nasal cavity growth were compared between age groups. Additionally, the correlation between body height and paranasal sinus growth was examined., Results: A total of 139 CT scans from 137 patients were analyzed. Volume growth of maxillary, ethmoidal, sphenoid, frontal sinuses, and nasal cavity was observed until 18, 16, 20, 20, and 22 years, respectively. Maxillary sinus rapidly grew at 2-8 and 9-12 years, ethmoid sinus 2-8 and 13-16 years, sphenoid sinus 5-8 years, frontal sinus 2-10 years, and nasal cavity 7-12 years. The median volume after growth completion for maxillary, ethmoidal, sphenoid, frontal sinuses, and nasal cavities was 21,937 mm³, 4868 mm³, 5870 mm³, 3172 mm³, and 15,555 mm³, respectively. The left-right difference in the nasal cavity volume increased with age. Sinus and nasal cavity growth completion was delayed by 2-4 years compared to general height growth., Conclusion: Growth of the ethmoid, maxillary, sphenoid, frontal sinus, and nasal cavity was completed in approximately 20 years. Compared to the results shown in reports based primarily on 2D measurements, the ethmoid and sphenoid sinuses and nasal cavity were found to continue to grow until older age than previously thought., (Copyright © 2024. Published by Elsevier B.V.)

Background. The nasal cavity (NC) is the entrance to the respiratory system. Many studies have been conducted on the structure, function and volume of the NC. Only a few studies were performed assessing the volumetric values of NC and conchae. Objectives. The aim of this study was to evaluate the volumetric measurements of the NC, conchae and nasal septum using the stereological method. Material and methods. Cone-beam computed tomography (CBCT) images of 200 individuals (100 females and 100 males) aged 8-59 years were retrospectively evaluated. Inferior nasal concha and middle nasal concha, NC and nasal septum volumes were measured on these images. Measurements were made using point counting method, which is based on the Cavalieri principle. The mean values of the measured structures for 2 age groups and for each gender were obtained. Differences between the groups and genders of all parameters were examined. The volume fractions of measured volumes were calculated. Results. The mean volumes of the nasal septum, left and right NC, left and right inferior nasal conchae, and left and right middle nasal conchae were 4.99 ±1.51 cm³, 7.44 ±2.93 cm³, 7.68 ±2.99 cm³, 3.10 ±1.11 cm³, 3.04 ±1.02 cm³, 1.32 ±0.56 cm³, and 1.28 ±0.49 cm³, respectively. Gender and age differences were statistically significant in all volumes (p < 0.05). Conclusions. The data obtained in this study may assist clinicians in planning treatment, assessing the treatment results of pathological conditions within the NC, and help surgeons in preoperational and postoperational evaluations, especially in dentistry, otorhinolaryngology and plastic surgery. [ABSTRACT FROM AUTHOR]

Objectives/hypothesis: It is theorized that intranasal cavity volumes change throughout the aging process, possibly secondary to hormonal changes and atrophy of the sinonasal mucosa. Our objective is to compare intranasal volumes from different age groups to test the hypothesis that intranasal cavity volume increases with age.Study Design: Case series.Methods: An analysis of computed tomography (CT) scans performed for reasons other than sinonasal complaints. Intranasal volumes of three groups (age 20-30 years, 40-50 years, and 70 years and above) were calculated using Vitrea software. The total intranasal volume was measured from the nasal vestibule anteriorly, the nasopharynx posteriorly, the olfactory cleft superiorly, and the nasal floor inferiorly. The total volume included the sum of the right and left sides.Results: Sixty-two CT scans were analyzed. There was a progressive, relatively linear, increase in intranasal volume with increasing age: 20 to 30 years = 15.73 mL, 40 to 50 years = 17.30 mL, and 70 years and above = 18.38 mL. Mean intranasal volume for males was 19.07 mL, and for females was 15.23 mL. Analysis of variance demonstrated significant group differences in mean intranasal volume for age (P = .003) and gender (P < .001), with moderate-to-large effect size of 0.206 and 0.289 (partial η(2) ), respectively. Post hoc testing revealed a significant difference between the 20 to 30-year and >70-year age groups (P = .006). There was no significant difference in intranasal volume dependent upon body mass index.Conclusions: Intranasal volume increases with age and is larger in males. Specific etiologies responsible for increased intranasal cavity volume with age are actively being evaluated.Level Of Evidence: 4 Laryngoscope, 126:2212-2215, 2016. [ABSTRACT FROM AUTHOR]

Aim and Objective: Mouth breathing is one of the most common deleterious habits prevalent in children which leads to various skeletal and dental malocclusions. Due to the close relationship between nasal and nasopharyngeal cavity volume and maxilla, transverse maxillary deficiency causes reduced nasal and nasopharyngeal cavity volume leading to mouth breathing. Therefore, knowledge of average nasal and nasopharyngeal cavity volume is essential to accurately diagnose mouth breathing and to evaluate underlying causative factors., Materials and Methods: Cone-beam computed tomographic scans of 60 children were taken and nasal cavity and nasopharyngeal volumes were calculated using Planmeca Romexis 5.2.0.R software. Average volumes were computed using predetermined landmarks and compared among gender., Results: The nasal cavity and nasopharyngeal volume showed significant differences among the gender ( p value < 0.001 and 0.018, respectively)., Conclusion and Clinical Significance: Knowledge of the average nasal and nasopharyngeal cavity volumes can be a useful diagnostic aid for mouth breathing patients and also assess the causative factors and treatment outcomes in these patients., How to Cite This Article: Kalaskar R, Balasubramanian S, Kalaskar A. Evaluation of the Average Nasal and Nasopharyngeal Volume in 10-13-year-old Children: A Preliminary CBCT Study. Int J Clin Pediatr Dent 2021;14(2):187-191., Competing Interests: Source of support: Nil Conflict of interest: None, (Copyright © 2021; Jaypee Brothers Medical Publishers (P) Ltd.)