The existence of accessory canals in the furcation region of primary molars has been the subject of extensive research. The objective of this study was to use a micro-computed tomography scanner to analyze accessory canals in the furcation region of extracted primary molars. Sixty-five primary molars which were extracted for purposes not including this study were collected and scanned at a resolution of 9.0 μm using a Skyscan 1176 Micro-CT scanner. For each extracted molar collected, the patients age at the time of extraction was recorded, as well as whether the tooth came from the maxillary or mandibular arch and if the tooth was a first or second molar. DataViewer v1.5.1 software was used to analyze each scanned primary molar for the presence or absence of canals, canal patency and number of canals present. Collected data was analyzed using SPSS 20.0 for Windows. Fisher’s exact and Kruskal-Wallis tests were used to identify association between variables.
Canals were observed in the furcation area of 83% of molars scanned, and patent canals were found in the furcation area of 8% of the molars. The mean number of canals per tooth was found to be 2.6. The majority of these canals were found adjacent to the periodontal ligament on the outer surface of the furcation. Second molars were observed to have a higher number of canals than first molars (p<0.05), with maxillary second molars having a mean number of canals of 3.3, mandibular second molars having a mean number of canals of 3.5, maxillary first molars having a mean of 1.8, and mandibular first molars having a mean of 2.1 canals. No significant association was found between patient age and the number of canals present. Micro-Computed Tomography was an effective method to quantify accessory canals in the furcation region of extracted primary molars. / October 2016
| Identifer | oai:union.ndltd.org:MANITOBA/oai:mspace.lib.umanitoba.ca:1993/31249 |
| Date | 18 April 2016 |
| Creators | Berscheid, Mark, Berscheid, Mark |
| Contributors | Cunha, Rodrigo (Restorative Dentistry), Lekic, Charles (Preventive Dental Science) Chu, Rene (Restorative Dentistry) Salles, Adriana (Preventive Dental Science) |
| Source Sets | University of Manitoba Canada |
| Detected Language | English |
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