Motta, L. J., Santos, J. G. dos, Alfaya, T. A., Guedes, C. C., Godoy, C. H. L. de and Bussadori, S. K. (2015) “Clinical status of permanent first molars in children aged seven to ten years in a Brazilian rural community”, Brazilian Journal of Oral Sciences. Limeira, SP, 11(4), pp. 475–780. doi: 10.20396/bjos.v11i4.8641246.