http://reply.papertrans.cn/1/57/5606/5606-11.png
http://reply.papertrans.cn/1/57/5606/5606-12.png
Submitted on: 15 June 1998.
Revised on: 30 September 1998.
Accepted on: 14 October 1998.
___________________Clinical Cosmetic and Investigational Dentistry
http://reply.papertrans.cn/1/57/5606/5606-14.png
http://reply.papertrans.cn/1/57/5606/5606-15.png
Submitted on: 29 October 2016.
Revised on: 24 January 2017.
Accepted on: 19 March 2017.
___________________Clinical Cosmetic and Investigational Dentistry
http://reply.papertrans.cn/1/57/5606/5606-17.png
Submitted on: 25 September 2011.
Revised on: 04 December 2011.
Accepted on: 24 December 2011.
___________________Clinical Cosmetic and Investigational Dentistry
http://reply.papertrans.cn/1/57/5606/5606-19.png
http://reply.papertrans.cn/1/57/5606/5606-20.png