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Incidence of third root in mandibular permanent first molar : an endodontic challenge
Joint Authors
Sulayman, Abd al-Haqq A.
Rashid, Ali M.
Source
Issue
Vol. 6, Issue 2 (31 Dec. 2006), pp.194-198, 5 p.
Publisher
University of Mosul College of Dentistry
Publication Date
2006-12-31
Country of Publication
Iraq
No. of Pages
5
Main Subjects
Topics
Abstract EN
Aim : to investigate the incidence and the morphology of third root for the mandibular permanent first molars from indigenous Iraqi population and their significance in the successful of endodontic treatment.
Materials and Methods : A clinical, radio graphical prospective evaluation of first mandibular permanent molar teeth (n = 788) and laboratory analysis of 695 extracted first mandibular permanent molars collected from University Mosul, College of Dentistry, Department of Conservative Dentistry and private dental clinic were collected and examined.
All the clinical cases treated as third root present, unless otherwise both 90 º, 20 ° mesial radio graphical shift and trapezoidal access opening excluded the presence of this macrostructure.
The third root was classified in three groups on the basis of the curve of the root / root canal according to Ribeiro and Consolaro (1997).
Chi–square was used to determine the significance between both genders, whereas descriptive statistics was used to describe the result of observations.
Results : Upon clinical and laboratory observation of total 1483 first mandibular permanent molars, 121 (8.1 %) exhibited radix entomologist (RE), 17 (14 %) were classified as type I (straight root / root canal), 33 (27.2 %) as type II (an initially curved entrance and the continuation as a straight root / root canals) and 71(58.6 %) as type III (an initial curve in the coronal third of the root canal and a second ducally orientated curve starting from the middle to apical third).
Statistical analysis with Chi–square indicated no significant differences between both genders regarding the occurrence of RE.
In all cases, RE occurred bilaterally.
Out of 71 teeth attended for clinic, 87.3 % teeth required retreatment, while the apparent reason of extraction for 86 % of 50 collected extracted teeth with RE seemed failure of endodontic treatment and the cleaning and obscuration confined to the mesial and distal canals only.
In all cases, the orifice of the RE was located dentilingual from the main canal in the distal root.
Conclusion : clinicians should be aware of this unusual root morphology in mandibular first molars.
Radiographs exposed at two different horizontal angles are needed to identify this additional root.
The access cavity must be modified in a dentilingual direction in order to visualize and treat the RE ; this results in a trapezoidal access cavity.
American Psychological Association (APA)
Rashid, Ali M.& Sulayman, Abd al-Haqq A.. 2006. Incidence of third root in mandibular permanent first molar : an endodontic challenge. al-Rafidain Dental Journal،Vol. 6, no. 2, pp.194-198.
https://search.emarefa.net/detail/BIM-281521
Modern Language Association (MLA)
Rashid, Ali M.& Sulayman, Abd al-Haqq A.. Incidence of third root in mandibular permanent first molar : an endodontic challenge. al-Rafidain Dental Journal Vol. 6, no. 2 (Dec. 2006), pp.194-198.
https://search.emarefa.net/detail/BIM-281521
American Medical Association (AMA)
Rashid, Ali M.& Sulayman, Abd al-Haqq A.. Incidence of third root in mandibular permanent first molar : an endodontic challenge. al-Rafidain Dental Journal. 2006. Vol. 6, no. 2, pp.194-198.
https://search.emarefa.net/detail/BIM-281521
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 197-198
Record ID
BIM-281521