Text and Data Mining valid from 2018-10-31
Received: 21 May 2018
Accepted: 26 October 2018
First Online: 31 October 2018
<!--Emphasis Type='Bold' removed-->Compliance with ethical standards
: None. No member of our team is hired by a dental materials company, or is a representative or has been sought by a company for research project development.
: This article does not contain any studies with human participants or animals performed by any of the authors.