http://reply.papertrans.cn/1/65/6424/6424-11.png
Submitted on: 08 February 1999.
Revised on: 02 March 1999.
Accepted on: 12 March 1999.
___________________Contemporary Clinical Dentistry
http://reply.papertrans.cn/1/65/6424/6424-13.png
http://reply.papertrans.cn/1/65/6424/6424-14.png
http://reply.papertrans.cn/1/65/6424/6424-15.png
http://reply.papertrans.cn/1/65/6424/6424-16.png
http://reply.papertrans.cn/1/65/6424/6424-17.png
Submitted on: 16 April 1998.
Revised on: 27 May 1998.
Accepted on: 14 June 1998.
___________________Contemporary Clinical Dentistry
http://reply.papertrans.cn/1/65/6424/6424-19.png
Submitted on: 30 June 2020.
Revised on: 16 October 2020.
Accepted on: 13 November 2020.
___________________Contemporary Clinical Dentistry