Journal of Oral Science Research
Prevalence and Characteristics of Fused Roots at Maxillary Second Molars in Northern Chinese Population by Cone-beam Computed Tomography
LU Guan-fan, MIN Yi, HAN Qi, LI Yu-hong
Journal of Oral Science Research . 2018, (11): 1177 -1181 .  DOI: 10.13701/j.cnki.kqyxyj.2018.11.008