Accepted Manuscript Does the Presence and/or Position of Lower Third Molars Alter the Risk of Mandibular Angle or Condylar Fractures? Saba Naghipur, BSc Adnan Shah, BDS, MDS Reda Fouad Elgazzar, BDS, MSc, PhD PII:
S0278-2391(14)00376-0
DOI:
10.1016/j.joms.2014.04.004
Reference:
YJOMS 56286
To appear in:
Journal of Oral and Maxillofacial Surgery
Received Date: 26 December 2013 Revised Date:
2 April 2014
Accepted Date: 6 April 2014
Please cite this article as: Naghipur S, Shah A, Elgazzar RF, Does the Presence and/or Position of Lower Third Molars Alter the Risk of Mandibular Angle or Condylar Fractures?, Journal of Oral and Maxillofacial Surgery (2014), doi: 10.1016/j.joms.2014.04.004. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
ACCEPTED MANUSCRIPT
TITLE: Does the Presence and/or Position of Lower Third Molars Alter the Risk of Mandibular
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Angle or Condylar Fractures?
AUTHORS: Saba Naghipur, BSc1
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Adnan Shah, BDS, MDS1
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Reda Fouad Elgazzar, BDS, MSc, PhD1
Department of Dental Diagnostics and Surgical Sciences, Faculty of Dentistry,
University of Manitoba, Winnipeg, MB, Canada.
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CORRESPONDING AUTHOR: Saba Naghipur
University of Manitoba, Faculty of Dentistry
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780 Bannatyne Ave, Winnipeg, MB, Canada R3T 0W2 Phone: 204-789-3631
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Fax: 204-789-3912
Email:
[email protected] ACCEPTED MANUSCRIPT
ABSTRACT Purpose: The purpose of this study was to determine whether a relationship exists between the presence of mandibular third molars (M3s) and mandibular angle and
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condylar fractures, and whether the risk of these fractures varies with M3 position.
Methods: A retrospective cohort study was conducted in patients presenting to the Oral
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and Maxillofacial Surgery service from April 2007 to March 2012 with mandibular
fractures. Data sources were the patients’ hospital charts and panoramic radiographs. The
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predictor variables were the presence and position of M3s. M3 position was based on the Pell and Gregory classification and angulation was determined by measuring the angle between the long axis of M3s and the mandibular occlusal plane. The outcome variables were the presence of angle and condylar fracture. Other study variables included age, sex
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and fracture etiology. Data was analyzed using chi square and Student’s t-test.
Results: The study sample consisted of 446 patients with 731 mandibular fractures. Our
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results showed that the risk of mandibular angle fracture was significantly higher in both patients and mandible sides with impacted M3s (P