Journal of Conservative Dentistry
Home About us Editorial Board Instructions Submission Subscribe Advertise Contact e-Alerts Login 
Users Online: 1235
Print this page  Email this page Bookmark this page Small font sizeDefault font sizeIncrease font size
 


 
Table of Contents   
CASE REPORT  
Year : 2014  |  Volume : 17  |  Issue : 5  |  Page : 481-482
Endodontic management of a maxillary molar with formation supradentalis: A case report


Department of Conservative Dentistry and Endodontics, Sinhagad Dental College, Pune, Maharashtra, India

Click here for correspondence address and email

Date of Submission02-Apr-2014
Date of Decision24-Jun-2014
Date of Acceptance01-Jul-2014
Date of Web Publication1-Sep-2014
 

   Abstract 

Anatomic variations may be observed in the crown or in the roots of maxillary molars. In rare instances, crown and root morphology, both show variations. Occurrence of paramolar cusp on the occlusal surface as central cusp or on the buccal surface as parastyle has been frequently reported in maxillary molars. However, presence of paramolar cusp on the palatal surface has not been reported. 'Formation supradentalis' is a condition in which supernumerary cusp is associated with a supernumerary root in a molar. The occurrence of such concomitant corono-radicular morphology is multifactorial, that is primary polygenic with secondary environmental influences. This case reports the diagnosis and endodontic management of Formation-supradentalis that had six cusps and four roots in the maxillary first molar. The tooth exhibited a prominent paramolar palatal cusp and cusp of Carabelli along with a supernumerary palatal root. To the best of author's knowledge, this is the first documentation of endodontic management of Formation supradentalis.

Keywords: Dental anomaly; formation supradentalis; maxillary first molar; palatal roots; supernumerary cusp

How to cite this article:
Shah DY, Jadhav GR. Endodontic management of a maxillary molar with formation supradentalis: A case report . J Conserv Dent 2014;17:481-2

How to cite this URL:
Shah DY, Jadhav GR. Endodontic management of a maxillary molar with formation supradentalis: A case report . J Conserv Dent [serial online] 2014 [cited 2019 Apr 21];17:481-2. Available from: http://www.jcd.org.in/text.asp?2014/17/5/481/139848

   Introduction Top


Variations in crown, root and root canal anatomy are found in all groups of teeth. Various external tooth morphological signs such as cervical width, supernumerary cusp, palato-gingival groove, wider mesio-distal dimensions of the cusp/tooth should be taken into consideration to predict the presence of any additional root. [1] Concomitant occurrence of supernumerary cusps such as the parastyle, central cusps and variations in root features in maxillary molars has not been discussed in the literature. Formation supradentalis is a condition in which molar has an extra cusp along with a supernumerary root. [2] The aim of this case report was to describe the diagnosis and endodontic management of a maxillary right first molar with formation supradentalis.


   Case report Top


A 38-year-old healthy Asian woman reported to the department with a continuous severe pain in the right posterior maxillary region for three days. Clinical examination revealed a carious right maxillary first molar (tooth #16) with a dislodged restoration. The crown of the tooth #16 was wide palatally with a paramolar cusp present between the mesio-palatal and disto-palatal cusps [Figure 1]. It was tender to percussion without any evidence of mobility, swelling or sinus tract. Cold test with CO 2 ice stick and electric pulp test elicited the premature, intense and lingering pain response. Pre-operative radiographic examination revealed an occlusal radiopacity suggestive of a previous restoration, mesio-occlusal radiolucency below restoration involving the pulp and widened periodontal ligament space with respect to mesio-palatal root [Figure 2]. From the clinical and radiographic findings, a diagnosis of irreversible pulpitis with symptomatic acute apical periodontitis was made. Radiographic examination revealed presence of mesio-palatal and disto-palatal roots in relation tooth #16. The patient was explained regarding the need for an endodontic intervention and variation in the usual coronal and radicular anatomy. Written informed consent was taken.
Figure 1: Tooth #16 showed four palatal cusps namely mesiopalatal cusp (a), cusp of carabelli (b), mid-palatal cusp (c) and disto-palatal cusp (d)

Click here to view
Figure 2: Pre-operative radiograph revealed presence of two palatal roots – mesio-palatal (a) and disto-palatal (b) with widening of periodontal ligament space around (a). Obturation was completed and porcelain fused to metal (PFM) crown was given

Click here to view


Under rubber dam (Hygienic, Coltène Whaledent Inc, USA) isolation, rectangular access opening was made in tooth #16 and working length was determined with an electronic apex locator (Root ZX; Morita, Tokyo, Japan) and radiographic method. All canals were prepared using Protaper NiTi rotary instruments (Dentsply Maillefer, Ballaigues, Switzerland) according to manufacturer's recommendations with standard irrigation protocol. Intracanal dressing of calcium hydroxide (Prime Dental Products Pvt Ltd, Mumbai, India) was given for two weeks during which #16 was asymptomatic. Obturation was done by a single cone technique with the help of gutta-percha cones and epoxy resin-based root canal sealer (AH plus sealer, Dentsply Maillefer, Tulsa, OK). Tooth was restored with a posterior composite restoration (Z250, 3M Dental Products, St. Paul, Minn.) and porcelain fused to metal crown was placed [Figure 2].


   Discussion Top


The present case report highlights the endodontic management of maxillary right first molar (tooth #16) with formation supradentalis. A paramolar cusp is a non metric dental trait expressed as a style or cusp of supernumerary character on the buccal or lingual surfaces of premolars or molars and develops from secondary enamel knots. [3] Also, there is increased likelihood of a paramolar root when the paramolar cusp is well developed. Hence, in tooth #16 showed a well-lobulated palatal paramolar cusp, which increased the chances of presence of a supernumerary palatal root. Tooth #16 exhibited four palatal cusps in the same palatal plane - prominent cusp of Carabelli and a paramolar cusp along with mesio-palatal and disto-palatal cusps and a supernumerary palatal root. Thus, it was classified as unilateral formation-supradentalis with the presence of six cusps and four roots. Angulated pre-operative peri-apical radiographs are indispensable in ruling out the presence of any unusual morphology. [4] An attempt to reduce the required number of radiographs and any pre-determined assumption about the root canal morphology increases the risk of missing the information of root canal morphology. [5] A careful tracing of periodontal ligament space can suggest the presence of an additional root. Certain additional operative steps are to be followed to visualize the elusive canal anatomy. This includes coronal flaring of the canal orifice, white and red line tests, troughing of grooves with ultrasonic tips, examination of the pulp chamber floor with a sharp explorer (DG 16), champagne bubble test using sodium hypochlorite, use of dyes like 1% methylene blue etc. Also the use of loupes and operating microscopes aid in locating such canals.


   Conclusion Top


The coronal morphology of tooth may be indicative of radicular aberration. To determine the presence of an additional root or root canal, a thorough knowledge about the external tooth morphology, careful interpretation of pre-operative radiographs and detailed exploration of internal root canal anatomy are critical.

 
   References Top

1.Raju CR, Chandrasekhar V, Singh CV, Pasari S. Maxillary molar with two palatal roots: Two case reports. J Conserv Dent 2010;13:58-61.  Back to cited text no. 1
    
2.Kallay J. Extra cusp formation in the human dentition. J Dent Res 1966;45:1381-94.  Back to cited text no. 2
    
3.Thesleff I, Keranen S, Jernvall J. Enamel knots as signaling centers linking tooth morphogenesis and odontoblast differentiation. Adv Dent Res 2001;15:14-28.  Back to cited text no. 3
    
4.Gopikrishna V, Bhargavi N, Kandaswamy D. Endodontic management of a maxillary first molar with a single root and a single canal diagnosed with the aid of Spiral CT: A case report. J Endod 2006;32:687-91.  Back to cited text no. 4
    
5.Jadhav GR. Endodontic management of a two rooted, three canaled mandibular canine with a fractured instrument. J Conserv Dent 2014;17:192-5.  Back to cited text no. 5
[PUBMED]  Medknow Journal  

Top
Correspondence Address:
Ganesh R Jadhav
Sinhagad Dental College, Pune - 411041, Maharashtra
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-0707.139848

Rights and Permissions


    Figures

  [Figure 1], [Figure 2]



 

Top
 
 
 
  Search
 
 
    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
    Email Alert *
    Add to My List *
* Registration required (free)  
 


    Abstract
   Introduction
   Case report
   Discussion
   Conclusion
    References
    Article Figures

 Article Access Statistics
    Viewed2528    
    Printed25    
    Emailed1    
    PDF Downloaded208    
    Comments [Add]    

Recommend this journal