. 2012 Mar-Apr;20(2):192–199. doi: 10.1590/S1678-77572012000200012

Table 2.

Number and percentages of restorations that have no marginal staining (Alpha) and comparisons of the groups at 3 months, 1 year and 2 years (p<0.05). (Total no. of restorations/no. of restorations)

Groups	Baseline	3 months	1 year	2 years
Group SI	30/30 (100%)	17/15 (88.2%)^aA	17/14 (82.4%)^aA	17/9 (52.9%)^aA
Group SI-B	30/30 (100%)	15/14 (93.3%)^aA	15/13 (86.7%)^aA	15/11 (73.3%)^aA
Group CL	41/41(100%)	32/31 (96.9%)^aA	32/28 (82.5%)^aA	32/25 (78.1%)^aA
Group CL-B	31/31 (100%)	22/21 (95.5%)^aA	22/20 (90.90%)^aA	22/20 (90.90%)^aA
Group XE	30/30 (100%)	20/17 (85%)^aA	20/11 (55%)^bB	20/9 (45%)^aB
Group XE-B	30/30 (100%)	21/19 (90.5)^aA	21/18 (85.7%)^aA	21/16 (76.2)^aA
Group CL-BP	30/30 (100%)	15/15 (100%)^aA	15/15 (100%)^aA	15/13 (86.6%)^aA
Group XE-BP	30/30 (100%)	16/16 (100%)^aA	16/15 (93.7%)^aA	16/14 (87.5%)^aA

Lower cases represent the significant differences between the groups (p<0.05) the same lower cases showed nonsignificant difference between the groups. Capitals stated at the bottom, represent the significant differences between the time (3 month, 1 year, 2 years) (p<0.05), the same capitals showed non-significant difference between the time.