18 August 2020: Clinical Research
Root Anatomy and Root Canal Morphology of Maxillary Second Permanent Molars in a Chongqing Population: A Cone-Beam Computed Tomography Study
Yu Xia 123CDEF , Xin Qiao 123BC , Ya-jing Huang 123CD , Yue-heng Li 123AE* , Zhi Zhou 123AGDOI: 10.12659/MSM.922794
Med Sci Monit 2020; 26:e922794
Table 8 Rates of MB2 and root canal configurations of the mesiobuccal roots of the maxillary permanent second molars reported in previous studies.
| Author (year) | Sample size of maxillary permanent second molar (n) | Ethnic population | Research method | The prevalence of MB2 | Type I | Type II | Type III | Type IV | Type V | Type VI |
|---|---|---|---|---|---|---|---|---|---|---|
| Neelakantan et al. 2010 | 205 | India | CBCT | 50% | ||||||
| Singh et al. 2015 | 100 | India | Diaphanization technique | 19.4% | 80.6% | 15.3% | 2.7% | 1.4% | ||
| Zhang et al. 2011 | 210 | China | CBCT | 22% | 78% | 3.96% | 12.76% | 2.2% | 0.66% | |
| Rouhani et al. | 125 | Iran | CBCT | 19.2% | 80.8% | 2.4% | 4.0% | 3.2% | 1.6% | 2.4% |
| Silva et al. 2014 | 306 | Brazil | CBCT | 34.32% | ||||||
| Al-Shalabi et al. 2013 | 162 | Ireland | Diaphanization technique | 19.7% | ||||||
| Reis et al. 2013 | 185 | Brazil | CBCT | 78.92% | ||||||
| Degerness et al. 2010 | 63 | USA | Dental hard tissue sectioning and stereomicroscope | 60.3% | ||||||
| Gao et al. 2006 | 223 | China | Diaphanization technique and spiral computed tomography | 49.7% | ||||||
| Stropko et al. 1999 | 611 | USA | Root canal treatment and dental operating microscope | 45.60% | ||||||
| Eskoz et al. 1995 | 73 | USA | X-ray imaging | 41.3% | 59.7% | 20.9% | 16.4% | 3.0% | ||
| Gilles et al. 1990 | 37 | Columbus | Scanning electron microscopy | 70% | ||||||
| Kim et al. 2012 | 821 | Korea | CBCT | 34% | ||||||
| Khademi et al. 2017 | 460 | Iran | CBCT | 43.4% | 57.6% | 39.3% | 1.73% | 1.3% | ||
| Ratanajirasut et al. 2018 | 457 | Thailand | CBCT | 29.4% | ||||||
| Nikoloudaki et al. 2015 | 402 | Greek | CBCT | 40.29% |