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 Table of Contents  
SHORT COMMUNICATION
Year : 2020  |  Volume : 32  |  Issue : 1  |  Page : 90-91

Gubernaculum tract: A guide for determining odontogenic lesions


1 Private Practitioner, Madhuban Dental and Orthodontic Centre, Delhi, India
2 Department of Oral Medicine and Radiology, Subharti Dental College, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India
3 Oral Pathology and Microbiology, Subharti Dental College, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India

Date of Submission03-Dec-2019
Date of Decision09-Mar-2020
Date of Acceptance12-Mar-2020
Date of Web Publication17-Apr-2020

Correspondence Address:
Dr. Dhruvesh Gupta
C/o: Madhuban Dental and Orthodontic Centre, ED.10B, Madhuban Chowk, Block.ED, Dakshini Pitampura, Pitampura, Delhi - 110 085
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jiaomr.jiaomr_198_19

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   Abstract 


Determining the etiology of the lesions either be in the bone or soft tissues becomes an imperative factor for treating the lesions. Maxillo-mandibular jaw lesions are also affected by many lesions be it odontogenic or nonodontogenic. The appearance of both these lesions can have a varied clinical and radiographic presentation. Therefore, determining the pathogenesis becomes the most imperative criteria for determining the additional investigations and treatment protocol. We hereby are presenting a radiographic finding of association of gubernaculum tract in determining the odontogenic origin lesions.

Keywords: Cone-beam computed tomography, gubernaculum tract, multidetector computed tomography, nonodontogenic, odontogenic


How to cite this article:
Gupta D, Kamarthi N, Gotur SP, Bhalla K. Gubernaculum tract: A guide for determining odontogenic lesions. J Indian Acad Oral Med Radiol 2020;32:90-1

How to cite this URL:
Gupta D, Kamarthi N, Gotur SP, Bhalla K. Gubernaculum tract: A guide for determining odontogenic lesions. J Indian Acad Oral Med Radiol [serial online] 2020 [cited 2020 Jun 4];32:90-1. Available from: http://www.jiaomr.in/text.asp?2020/32/1/90/282615




   Discussion Top


Gubernacular tract (GT) is an eruption pathway from the dental follicle to the gingiva for permanent teeth. Variations in the path, curve along with the obliteration of the canal have been established as the causative factor in the impacted and delayed erupting teeth.[1] Till date, its role has not been looked upon as a noteworthy finding. Radiologists using the imaging modalities must accurately identify these varied characteristics of GT and come to a conclusive diagnosis so that accurate treatment protocol can be carried out.

Multidetector computed tomography (MDCT) and Cone-beam computed tomography (CBCT) in the recent decade have become an incomparable tool in three-dimensional visualization of jaw structures with excellent clarity and resolution. Based on the serial selections and sectioning of the images obtained on these imaging modalities, the details of the lesions are well elaborated and thus can overcome the limitations of 2-D imaging.[2] Demonstration of the role of GT in tooth eruption or its association with odontogenic lesions has not been elaborated by many authors. CBCT scans can clearly display GT as an adjoining, corticated canal which is in continuous with the dental follicle of the unerupted teeth.[3] The significance of imaging characteristics of GT and its association with the lesions was useful not only for diagnosing odontogenic lesions but also for differentiating odontogenic and nonodontogenic masses. Till date, only few studies have emphasized the significance of GT in identifying its role in developmental and odontogenic anomalies [Table 1].[3],[4],[5],[6]
Table 1: Studies showing the importance of radiographic evaluation and significance of GT

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Odontogenic tumors like ameloblastoma, ameloblastic fibroma, odontoma, and odontogenic cysts like dentigerous cyst and odontogenic keratocyst clearly demonstrated the presence of this tract [Figure 1], whereas nonodontogenic tumors like aneurysmal bone cyst and central giant cell granuloma failed to demonstrate the presence of this tract [Figure 2]. Size of the lesion and position of the jaw lesions in the arches did not affect the association of gubernaculum tract with odontogenic lesions. Extensive research has to be carried out on this aspect to clearly demonstrate the spatial association of gubernaculum tract with odontogenic lesions. Importance of change in the architecture and position of GT has to be carried out as a longitudinal study on a large scale basis in the impacted and transposition teeth to derive at a conclusive finding.
Figure 1: CBCT images of odontoma and dentigerous cyst demonstrating gubernaculum tract (red arrow)

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Figure 2: CBCT images of central giant cell granuloma and aneurysmal bone cyst without any GT

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Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.



 
   References Top

1.
Nanci A. Ten Cate's Oral Histology. Development, Structure, and Function. 7th ed. St. Louis: Mosby Elsevier; 2008. p. 79-289.  Back to cited text no. 1
    
2.
BriscoJ, Fuller K, Lee N. Cone beam computed tomography for imaging orbital trauma-image quality and radiation dose compared with conventional multislice computed tomography. Br J Oral Maxillofac Surg 2014;52:76-80.  Back to cited text no. 2
    
3.
Oda M, Miyamoto I, Nishida I, Tanaka T, Kito S, Seta Y, et al. A spatial association between odontomas and the gubernaculum tracts. Oral Surg Oral Med Oral Pathol Oral Radiol 2016;121:91-5.  Back to cited text no. 3
    
4.
Nishida I, Oda M, Tanaka T. Detection and imaging characteristics of the gubernaculums tract in children on cone beam and multi-detector CT. Oral Surg Oral Med Oral Pathol Oral Radiol 2015;120:E109-17.  Back to cited text no. 4
    
5.
Oda M, Nishida I, Miyamoto I, Habu M, Yoshiga D, Kodama M, et al. Characteristics of the gubernaculum tracts in mesiodens and maxillary anterior teeth with delayed eruption on MDCT and CBCT. Oral Surg Oral Med Oral Pathol Oral Radiol 2016;122:511-6.  Back to cited text no. 5
    
6.
Oda M, Nishida I, Miyamoto I, Saeki K, Tanaka T, Kito S, et al. Significance and usefulness of imaging characteristics of gubernaculum tracts for the diagnosis of odontogenic tumors or cysts. PLoS One 2018;13:e0199285.  Back to cited text no. 6
    


    Figures

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    Tables

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