1870-199X 1870-199X S1870-199X2009000200073 10.22201/fo.1870199xp.2009.13.2.15604 Mexico Mexico 00 00 2009 00 00 2009 13 2 73 78

1 1988 19 467-78 2 1997 3 2004 196 9 9 514-5 4 1998 595-601 5 2000 6 American National Standard American Dental Association Specification 96 96 7 2000 8 1997 9 2006 10 1989 68 2 2 89-94 11 2006 34 8 8 556-65 12 1976 55 2 2 299-308 13 1975 183 303-22