dc.contributor.advisor | Venugopalan, Shankar Rengasamy | |
dc.contributor.author | Kaiser, Kevin | |
dc.date.issued | 2018 | |
dc.date.submitted | 2018 Fall | |
dc.description | Title from PDF of title page viewed December 18, 2019 | |
dc.description | Thesis advisor: Shankar Rengasamy Venugopalan | |
dc.description | Vita | |
dc.description | Includes bibliographical references (pages 54-58) | |
dc.description | Thesis (M.S)--School of Dentistry. University of Missouri--Kansas City, 2018 | |
dc.description.abstract | During growth of the craniofacial structure, the nasal septum is posited to exert a
downward and forward effect on the midface. This phenomena is well documented in vitro
and on animals but is still uncertain in humans. This study examined the nasal septum
association with craniofacial structures using cone-beam computed tomography (CBCT) of
human subjects. First, cartilaginous nasal septum area was tested for association with
anteroposterior position of the maxilla. The area of the cartilaginous nasal septum was
calculated using the CBCT scan and a lateral cephalometric radiograph was created from the
CBCT to evaluate the anteroposterior position of the maxilla. Second, nasal septum deviation
was tested for association with frontal skeletal asymmetry. The absolute septal deviation
(ASD) was calculated in the frontal plane where most deviated and a frontal cephalometric
radiograph was created from the CBCT to evaluate for skeletal asymmetry.
Nasal septum area and anteroposterior position of the maxilla were not associated
(bivariate regression analysis, p>0.05). Nasal septum area was significantly associated
(p<0.05) with lower gonial angle, total anterior face height, upper face height, lower face
height. Subsequently, a model was created to assess nasal septum area with cranial base
measurements association on the maxillary, mandibular, and maxillo-mandibular
measurements (multivariate stepwise regression). This showed a significant association
(p<0.05) in females for SNA (R²=23.80%), total maxillary length (R²=60.80%), and Wits
(R²=14.20%). In males, the model association was significant with total maxillary length
(R²=35.20%), SNB (R²=31.40%), and ANB (R²=40.00%).
ASD and skeletal asymmetries were split into right and left deviations and tested for
association with right and left measurements, respectively. Right side ASDs had statistically
significant (p<0.05) correlations with right facial width, right mandibular width, and right
occlusal plane. No measurements were significantly associated with left side ASDs and left
side measurements.
Though we were unable to test the causal relationship of the nasal septum with facial
growth, our results suggest that the nasal septal cartilage may exert a downward force and
has minimal forward influence on the midface in humans. It also suggests that a deviated
nasal septum may influence the asymmetry of the facial skeleton. | eng |
dc.description.tableofcontents | Introduction -- Materials and methods -- Results -- Discussion -- Conclusions -- Appendix A | |
dc.format.extent | xi, 61 pages | |
dc.identifier.uri | https://hdl.handle.net/10355/70645 | |
dc.publisher | University of Missouri -- Kansas City | eng |
dc.subject.lcsh | Nasal septum | |
dc.subject.lcsh | Tomography | |
dc.subject.mesh | Nasal septum | |
dc.subject.mesh | Cone-Beam Computed Tomography | |
dc.subject.other | Thesis -- University of Missouri--Kansas City -- Dentistry | |
dc.title | Association of Nasal Septum Area and Deviation with Anteroposterior Maxillary Position and Facial Skeletal Asymmetries | eng |
dc.type | Thesis | eng |
thesis.degree.discipline | Oral and Craniofacial Sciences (UMKC) | |
thesis.degree.grantor | University of Missouri--Kansas City | |
thesis.degree.level | Masters | |
thesis.degree.name | M.S. (Master of Science) | |