Yang, Liu
Yin, Guangfu
Liao, Xiaoming
Yin, Xing
Ye, Niansong
Funding for this research was provided by:
National key R&D Program Project (2018YFC1105703)
National Natural Science Foundation of China (8180101)
Sichuan Science and Technology Program (2019JDRC0099)
Article History
Received: 15 June 2019
Accepted: 11 September 2019
First Online: 14 October 2019
Ethics approval and consent to participate
: This project was approved by the Ethical Committee of West China Hospital of Stomatology (Protocol number: WCHSIRB-D-2018-070), Chengdu, China. All participants/parents carefully read and signed the consent forms.
: Since this was a M. D thesis, the participants were informed that their intraoral photographs might be used for presentations and publications. None of the participants/parents objected to the use of their intraoral photographs. All authors read and approved the final manuscript.
: The authors declare that they have no competing interests.