Apoorva, Karandikar (2011) A Cone-Beam Computed Tomographic Analysis of Mesio-buccal Root Canals of Maxillary First Molar. Masters thesis, Ragas Dental College and Hospital, Chennai.
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Abstract
The maxillary first molar is one of the first permanent teeth to erupt in the oral cavity and is important in the key of occlusion.Literature reveals that it is one of the most frequent teeth to be affected by dental caries and therefore is a common candidate for endodontic therapy. Aberrant canal and root morphology of the maxillary 1st molar has been well documented in many studies. The aim of the present study was to investigate the mesiobuccal root canal morphology of two hundred maxillary permanent first molars using cone beam computed tomography. Two hundred maxillary 1st molars were selected and the distobuccal and palatal roots were resected at the furcation. Following this cone beam computed tomograms of the mesiobuccal roots were taken for all specimens. The comparative evaluation of the specimens was performed. The following parameters were investigated. 1. Number of Canals and Canal Pattern (According to vertucci’s classification), 2. Isthmus (According to Kim’s Classification), 3. Canal curvature angle(According to Schneider’s technique), 4. Lateral canals and apical delta, 5. Calcified segments and other aberrations. CONCLUSION: From the ex-vivo scanning results of mesiobuccal root canals of 200 maxillary first molars in the present study, it was inferred that, (i) 40%, 32.5%, 5.5%, 7.5%, 7.5% and 2% of the teeth exhibited Vertucci’s canal configuration Type I , II , III , IV, V and VII, respectively. (ii) 21.5% , 6.5%, 8.5%, 8.5% of the samples showed type I, II, III and V isthmus respectively. (iii) The MB1 canals showed angulations of 0° - 20°, 21°- 40° and greater than 40° in 42 , 125 and 33 teeth, respectively. The MB2 canals showed angulations of 0° - 20°, 21°- 40° and greater than 40° in 15 , 83 and 15 teeth, respectively. (iv) 6.5% of the specimens showed lateral canals, whereas 10.5% of the specimens showed accessory canals and apical deltas. (v) MB1 canal showed 6 and 4 specimens with calcified segments in the coronal and middle third, respectively. The apical segment of MB1 canal did not show any calcifications. MB2 canal showed 8 specimens with calcified segments in the coronal third, whereas, the middle and apical thirds did not show the presence of calcifications. (vi) 2 (1%) specimens showed intercanal communications. (vii) Cone beam computed tomography scan is a useful tool to study the root canal configuration in a noninvasive mode and with minimal radiation exposure.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Cone-Beam Computed Tomographic Analysis ; Mesio-buccal Root Canals ; Maxillary First Molar. |
| Subjects: | DENTAL > Conservative Dentistry and Endodontics |
| Depositing User: | Kambaraman B |
| Date Deposited: | 14 May 2018 03:32 |
| Last Modified: | 14 May 2018 03:32 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/7811 |
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