Submitted on: 11 October 2002.
Revised on: 07 February 2003.
Accepted on: 26 February 2003.
___________________European Journal of Prosthodontics and Restorative Dentistry
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Submitted on: 18 June 2008.
Revised on: 12 October 2008.
Accepted on: 17 November 2008.
___________________European Journal of Prosthodontics and Restorative Dentistry
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