Table 1 Previous report cases with 6 or more root canals in maxillary molars
From: Multiple root canals in the maxillary molar: an unusual case report
| Root configuration | No. of canals | Root canal anatomy | Authors | Year | ||
|---|---|---|---|---|---|---|
| MB | DB | P | ||||
| First maxillary molar | ||||||
| 3 roots | 6 | 3 | 2 | 1 | Martínez-Berná et al. [3] | 1983 |
| 3 roots | 6 | 3 | 2 | 2 | Bond et al. [4] | 1988 |
| 3 roots | 6 | 2 | 1 | 3 | Maggiore et al. [5] | 2002 |
| 4 roots (MB, MP, P, DB) | 6 | MB, MP, M, P, DP, DB | Adanir [6] | 2007 | ||
| 3 roots | 6 | 2 | 2 | 2 | de Almeida-Gomes et al. [1] | 2009 |
| 3 roots | 6 | 2 | 2 | 2 | Albuquerque et al. (3 cases) [7] | 2010 |
| 3 roots | 6 | 2 | 2 | 2 | Karthikeyan et al. (4 cases) [8] | 2010 |
| 3 roots | 7 | 3 | 2 | 2 | Kottor et al. [9] | 2010 |
| 3 roots | 8 | 3 | 3 | 2 | Kottor et al. [10] | 2011 |
| 3 roots | 6 | 3 | 2 | 1 | Sharath Chandra et al. [11] | 2012 |
| 3 roots | 7 | 3 | 2 | 2 | Gautam et al. [12] | 2014 |
| 3 roots | 6 | 2 | 2 | 2 | Present cases | 2015 |
| Second maxillary molar | ||||||
| 3 roots | 6 | 2 | 1 | 3 | Pasternak et al. [13] | 2007 |
| 3 roots | 7 | 3 | 2 | 2 | Present cases | 2016 |