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http://dx.doi.org/10.5125/jkaoms.2015.41.1.3

Relationship between mandibular condyle and angle fractures and the presence of mandibular third molars  

Mah, Deuk-Hyun (Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University)
Kim, Su-Gwan (Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University)
Moon, Seong-Yong (Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University)
Oh, Ji-Su (Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University)
You, Jae-Seek (Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University)
Publication Information
Journal of the Korean Association of Oral and Maxillofacial Surgeons / v.41, no.1, 2015 , pp. 3-10 More about this Journal
Abstract
Objectives: We retrospectively evaluated the impact of mandibular third molars on the occurrence of angle and condyle fractures. Materials and Methods: This was a retrospective investigation using patient records and radiographs. The sample set consisted of 440 patients with mandibular fractures. Eruption space, depth and angulation of the third molar were measured. Results: Of the 144 angle fracture patients, 130 patients had third molars and 14 patients did not. The ratio of angle fractures when a third molar was present (1.26 : 1) was greater than when no third molar was present (0.19 : 1; odds ratio, 6.58; P<0.001). Of the 141 condyle fractures patients, the third molar was present in 84 patients and absent in 57 patients. The ratio of condyle fractures when a third molar was present (0.56 : 1) was lower than when no third molar was present (1.90 : 1; odds ratio, 0.30; P<0.001). Conclusion: The increased ratio of angle fractures with third molars and the ratio of condyle fractures without a third molar were statistically significant. The occurrence of angle and condyle fractures was more affected by the continuity of the cortical bone at the angle than by the depth of a third molar. These results demonstrate that a third molar can be a determining factor in angle and condyle fractures.
Keywords
Bone fracture; Trauma; Tooth;
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1 Zhu SJ, Choi BH, Kim HJ, Park WS, Huh JY, Jung JH, et al. Relationship between the presence of unerupted mandibular third molars and fractures of the mandibular condyle. Int J Oral Maxillofac Surg 2005;34:382-5.   DOI
2 Duan DH, Zhang Y. Does the presence of mandibular third molars increase the risk of angle fracture and simultaneously decrease the risk of condylar fracture? Int J Oral Maxillofac Surg 2008;37:25-8.   DOI
3 Inaoka SD, Carneiro SC, Vasconcelos BC, Leal J, Porto GG. Relationship between mandibular fracture and impacted lower third molar. Med Oral Patol Oral Cir Bucal 2009;14:E349-54.
4 Thangavelu A, Yoganandha R, Vaidhyanathan A. Impact of impacted mandibular third molars in mandibular angle and condylar fractures. Int J Oral Maxillofac Surg 2010;39:136-9.   DOI
5 Kelly DE, Harrigan WF. A survey of facial fractures: Bellevue Hospital, 1948-1974. J Oral Surg 1975;33:146-9.
6 Pell G, Gregory BT. Impacted mandibular third molars: classification and modified techniques for removal. Dent Dig 1933;39:330.
7 Shiller WR. Positional changes in mesio-angular impacted mandibular third molars during a year. J Am Dent Assoc 1979;99:460-4.   DOI
8 Ellis E 3rd, Moos KF, el-Attar A. Ten years of mandibular fractures: an analysis of 2,137 cases. Oral Surg Oral Med Oral Pathol 1985;59:120-9.   DOI
9 Chidzonga MM. Mandibular fractures, analysis of 541 cases. Cent Afr J Med 1990;36:97-103.
10 Cho SP, Lee JH, Kim CH. The influence of mandibular third molar on mandibular angle fracture. J Korean Assoc Maxillofac Plast Reconstr Surg 2006;28:49-57.
11 Bezerra TP, Silva Junior FI, Scarparo HC, Costa FW, Studart-Soares EC. Do erupted third molars weaken the mandibular angle after trauma to the chin region? A 3D finite element study. Int J Oral Maxillofac Surg 2013;42:474-80.   DOI
12 Iida S, Hassfeld S, Reuther T, Nomura K, Muhling J. Relationship between the risk of mandibular angle fractures and the status of incompletely erupted mandibular third molars. J Craniomaxillofac Surg 2005;33:158-63.   DOI
13 Fuselier JC, Ellis EE 3rd, Dodson TB. Do mandibular third molars alter the risk of angle fracture? J Oral Maxillofac Surg 2002;60:514-8.   DOI
14 Kober C, Sader R, Thiele H, Bauer HJ, Zeilhofer HF, Hoffmann KH, et al. Stress analysis of the human mandible in standard trauma situations with numerical simulation. Mund Kiefer Gesichtschir 2001;5:114-9.   DOI
15 Lamphier J, Ziccardi V, Ruvo A, Janel M. Complications of mandibular fractures in an urban teaching center. J Oral Maxillofac Surg 2003;61:745-9.   DOI
16 Feller KU, Schneider M, Hlawitschka M, Pfeifer G, Lauer G, Eckelt U. Analysis of complications in fractures of the mandibular angle--a study with finite element computation and evaluation of data of 277 patients. J Craniomaxillofac Surg 2003;31:290-5.   DOI
17 Zide MF, Kent JN. Indications for open reduction of mandibular condyle fractures. J Oral Maxillofac Surg 1983;41:89-98.   DOI
18 Haug RH, Peterson GP, Goltz M. A biomechanical evaluation of mandibular condyle fracture plating techniques. J Oral Maxillofac Surg 2002;60:73-80.   DOI
19 Ellis E 3rd. Complications of mandibular condyle fractures. Int J Oral Maxillofac Surg 1998;27:255-7.   DOI
20 Fonseca RJ. Oral and maxillofacial trauma. 4th ed. St. Louis: Elsevier/Saunders; 2013:186.
21 Gassner R, Tuli T, Hachl O, Rudisch A, Ulmer H. Cranio-maxillofacial trauma: a 10 year review of 9,543 cases with 21,067 injuries. J Craniomaxillofac Surg 2003;31:51-61.   DOI
22 Tanaka N, Tomitsuka K, Shionoya K, Andou H, Kimijima Y, Tashiro T, et al. Aetiology of maxillofacial fracture. Br J Oral Maxillofac Surg 1994;32:19-23.   DOI
23 Papel ID, Frodel J. Facial plastic and reconstructive surgery. New York: Thieme; 2002:769-90.
24 Rudderman RH, Mullen RL. Biomechanics of the facial skeleton. Clin Plast Surg 1992;19:11-29.
25 Reitzik M, Schmidt E, Butters RG. Yield point of monkey mandible. J Dent Res 1981;60:1993-5.   DOI
26 Huelke DF, Patrick LM. Mechanics in the production of mandibular fractures: strain-gauge measurements of impacts to the chin. J Dent Res 1964;43:437-46.   DOI
27 Safdar N, Meechan JG. Relationship between fractures of the mandibular angle and the presence and state of eruption of the lower third molar. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1995;79:680-4.   DOI
28 Cho SJ, Kim YG. The study on mandibular fracture mechanism using dynamic 3-dimensional finite analysis. J Korean Assoc Maxillofac Plast Reconstr Surg 2002;24:470-81.
29 Olson RA, Fonseca RJ, Zeitler DL, Osbon DB. Fractures of the mandible: a review of 580 cases. J Oral Maxillofac Surg 1982;40:23-8.   DOI
30 Ogundare BO, Bonnick A, Bayley N. Pattern of mandibular fractures in an urban major trauma center. J Oral Maxillofac Surg 2003;61:713-8.   DOI
31 Tevepaugh DB, Dodson TB. Are mandibular third molars a risk factor for angle fractures? A retrospective cohort study. J Oral Maxillofac Surg 1995;53:646-9.   DOI
32 Lee JT, Dodson TB. The effect of mandibular third molar presence and position on the risk of an angle fracture. J Oral Maxillofac Surg 2000;58:394-8.   DOI
33 Schwimmer A, Stern R, Kritchman D. Impacted third molars: a contributing factor in mandibular fractures in contact sports. Am J Sports Med 1983;11:262-6.   DOI
34 Yamada T, Sawaki Y, Tohnai I, Takeuchi M, Ueda M. A study of sports-related mandibular angle fracture: relation to the position of the third molars. Scand J Med Sci Sports 1998;8:116-9.
35 Meisami T, Sojat A, Sandor GK, Lawrence HP, Clokie CM. Impacted third molars and risk of angle fracture. Int J Oral Maxillofac Surg 2002;31:140-4.   DOI