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Maturational Staging of the Midpalatal and Zygomaticomaxillary Sutures: A Morphological Study Using CBCT

Chou, Emily C (2020) Maturational Staging of the Midpalatal and Zygomaticomaxillary Sutures: A Morphological Study Using CBCT. Master's Thesis, University of Pittsburgh. (Unpublished)

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Objective: The aim of this study was to observe the patency of the midpalatal (MPS) and zygomaticomaxillary (ZMS) sutures relative to age, gender, cervical vertebrae maturation stage (CVMS), palatal and zygomatic dimensions and malocclusion.
Method: The sample comprised of 278 subjects selected from one private orthodontic office. The necessary information from their records was reviewed and documented. Their pre-treatment cone-beam computed tomography (CBCT) images were obtained for orthodontic diagnosis and treatment planning purposes. These images were exported to the Invivo 5 program (Anatomage, San Jose, California), in which orthogonal and oblique sections were obtained from the MPS and ZMS for morphologic evaluation. The five MPS (A, B, C as open; D, E as closed) and five ZMS (A, B as open; C, D, E as closed) morphological maturational stages of patency were classified based on previous studies (Angelieri et al 2015, 2017) by a single examiner. Cohen’s kappa was applied for intraexaminer agreements, and their values were 0.95 and 0.83 for the MPS and ZMS, respectively.
Result: The patency of the MPS and ZMS are significantly associated with age, gender, CVMS and Angle Class I and Class II malocclusions. The MPS patency is associated with the palatal depth/length (Pd/Pl) ratio, while the ZMS patency is not. Statistically, Class III malocclusion was found to significantly related to the ZMS patency, but not at the MPS.
Conclusion: There is a strong association of an open MPS when ZMS is open. In Class I and II malocclusions in which maxillary expansion is indicated, the MPS is normally open in CVMS I and II. In Class I or mild Class III malocclusions in which maxillary expansion and a facemask is considered, the MPS and ZMS should be evaluated at CVMS II or earlier. Deeper and shorter palates are associated with open MPS.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Chou, Emily Cemc79@pitt.eduemc79
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairPetrone, Joseph FAjfap@pitt.edujfap
Committee CoChairShah, Nilesh Hnhs3@pitt.edunhs3
Committee MemberSnyder, Timothy Rtimloasmiles@gmail.comtrs37
Date: 13 July 2020
Date Type: Publication
Defense Date: 21 May 2020
Approval Date: 13 July 2020
Submission Date: 11 June 2020
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 80
Institution: University of Pittsburgh
Schools and Programs: School of Dental Medicine > Dental Science
Degree: MDS - Master of Dental Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: Midpalatal suture maturational stages zygomaticomaxillary suture maturational stages palatal depth to palatal length ratios zygomatic widths
Date Deposited: 13 Jul 2020 18:01
Last Modified: 13 Jul 2020 18:01


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