Erratum to: Imaging Sci Dent 2016; 46: 159-65 (http://dx.doi.org/10.5624/isd.2016.46.3.159)
In the above article, the financial grant has been erroneously omitted, so it would be disclosed as below.
Funding: This work was supported by FAPESP (São Paulo Research Foundation), grant number 2012/19331-4.