Werle, Stefanie Bressan
Chagastelles, Pedro
Pranke, Patricia
Casagrande, Luciano
Article History
Received: 3 October 2017
Accepted: 19 March 2018
First Online: 7 April 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This research was conducted in accordance with the ethical standards of the Resolution of the National Council on Ethics in Research (n. 466/2012) and with the 1964 Helsinki declaration and its later amendments, or comparable ethical standards. The Research Committee of the Universidade Federal do Rio Grande do Sul, Brazil (n. 27111314.3.0000.5347) approved the protocol of this study. Deciduous teeth (molars and canines) with at least one third of a physiological root resorption and which had been programed for extraction were selected from five donors, aged 8 to 12 years old. The tooth extraction was conducted at the Children and Youth Dental Clinic, School of Dentistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil. For the tooth collection, written informed consent was signed by the parents or guardians of the donors.
: Informed consent was obtained from all of the individual participants that were included in the study.