Browse > Article

Diagnostic imaging analysis of the impacted mesiodens  

Noh, Jeong-Jun (Department of Dentistry, School of Dentistry, Seoul National University)
Choi, Bo-Ram (Department of Oral and Maxillofacial Radiology, School of Dentistry, Seoul National University)
Jeong, Hwan-Seok (Department of Oral and Maxillofacial Radiology, School of Dentistry, Seoul National University)
Huh, Kyung-Hoe (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University)
Yi, Won-Jin (Department of Oral and Maxillofacial Radiology, Dental Research Institute and BK21 Craniomaxillofacial Life Science, School of Dentistry, Seoul National University)
Heo, Min-Suk (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University)
Lee, Sam-Sun (Department of Oral and Maxillofacial Radiology, Dental Research Institute and BK21 Craniomaxillofacial Life Science, School of Dentistry, Seoul National University)
Choi, Soon-Chul (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University)
Publication Information
Imaging Science in Dentistry / v.40, no.2, 2010 , pp. 69-74 More about this Journal
Abstract
Purpose : The research was performed to predict the three dimensional relationship between the impacted mesiodens and the maxillary central incisors and the proximity with the anatomic structures by comparing their panoramic images with the CT images. Materials and Methods : Among the patients visiting Seoul National University Dental Hospital from April 2003 to July 2007, those with mesiodens were selected (154 mesiodens of 120 patients). The numbers, shapes, orientation and positional relationship of mesiodens with maxillary central incisors were investigated in the panoramic images. The proximity with the anatomical structures and complications were investigated in the CT images as well. Results : The sex ratio (M : F) was 2.28 : 1 and the mean number of mesiodens per one patient was 1.28. Conical shape was 84.4% and inverted orientation was 51.9%. There were more cases of anatomical structures encroachment, especially on the nasal floor and nasopalatine duct, when the mesiodens was not superimposed with the central incisor. There were, however, many cases of the nasopalatine duct encroachment when the mesiodens was superimpoised with the apical 1/3 of central incisor (52.6%). Delayed eruption (55.6%), crown rotation (66.7%) and crown resorption (100%) were observed when the mesiodens was superimposed with the crown of the central incisor. Conclusion : It is possible to predict three dimensional relationship between the impacted mesiodens and the maxillary central incisors in the panoramic images, but more details should be confirmed by the CT images when necessary.
Keywords
Tooth; Impacted; Panoramic Radiography; Computed Tomography; X-ray;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Alberti G, Mondani PM, Parodi V. Eruption of supernumerary permanent teeth in a sample of urban primary school population in Genoa, Italy. Eur J Paediatr Dent 2006; 7 : 89-92.
2 von Arx T. Anterior maxillary supernumerary teeth: a clinical and radiographic study. Aust Dent J 1992; 37 : 189-95.   DOI   ScienceOn
3 Stellzig A, Basdra EK, Komposch G. Mesiodentes: incidence, morphology, etiology. J Orofac Orthop 1997; 58 : 144-53.   DOI   ScienceOn
4 Liu DG, Zhang WL, Zhang ZY, Wu YT, Ma XC. Three dimensional evaluations of supernumerary teeth using cone-beam computed tomography for 487 cases. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2007; 103 : 403-11.   DOI   ScienceOn
5 Liu DG, Zhang WL, Zhang ZY, Wu YT, Ma XC. Localization of impacted maxillary canines and observation of adjacent incisor resorption with cone-beam computed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008; 105 : 91-8.   DOI   ScienceOn
6 Roychoudhury A, Gupta Y, Parkash H. Mesiodens: a retrospective study of fifty teeth. J Indian Soc Pedod Prev Dent 2000; 18 : 144-6.
7 Asaumi JI, Shibata Y, Yanagi Y, Hisatomi M, Matsuzaki H, Konouchi H, et al. Radiographic examination of mesiodens and their associated complications. Dentomaxillofac Radiol 2004; 33 : 125-7.   DOI   ScienceOn
8 Kim SG, Lee SH. Mesiodens: a clinical and radiographic study. J Dent Child 2003; 70 : 58-60.
9 Lustmann J, Bodner L. Dentigerous cysts associated with supernumerary teeth. Int J Oral Maxillofac Surg 1988; 17 : 100-2.   DOI   ScienceOn
10 Huang WH, Tsai TP, Su HL. Mesiodens in the primary dentition stage: a radiographic study. ASDC J Dent Child 1992; 59 : 186-9.
11 Fernandez Montenegro P, Valmaseda Castellon E, Berini Aytes L, Gay Escoda C. Retrospective study of 145 supernumerary teeth. Med Oral Patol Oral Cir Bucal 2006; 11 : E339-44.
12 Gabris K, Fabian G, Kaan M, Rozsa N, Tarjan I. Prevalence of hypodontia and hyperdontia in paedodontic and orthodontic patients in Budapest. Community Dent Health 2006; 23 : 80-2.
13 Russell KA, Folwarczna MA. Mesiodens-diagnosis and management of a common supernumerary tooth. J Can Dent Assoc 2003; 69 : 362-6.
14 Zmener O. Root resorption associated with an impacted mesiodens: a surgical and endodontic approach to treatment. Dent Traumatol 2006; 22 : 279-82.
15 Ray D, Bhattacharya B, Sarkar S, Das G. Erupted maxillary conical mesiodens in deciduous dentition in a Bengali girl - A case report. J Indian Soc Pedod Prev Dent 2005; 23 : 153-5.   DOI   ScienceOn
16 Costa Pinho TM, Figueiredo Pollmann MC. Study of the frequency and the features of supranumerary teeth found in one Portuguese population. Bull Group Int Rech Sci Stomatol Odontol 2004; 46 : 52-62.