Table 4: The results of evaluations of restorations after six, 12 and 24 months using modified Ryges criteria.

6 Months 12 Months 24 Months
Bur Laser Bur Laser Bur Laser
N=26 N=26 N=25 N=25 N=20 N=20
Characteristic Number (%) Number (%) Number (%) Number (%) Number (%) Number (%)
Retention:
Alpha 26(100) 26(100) 25(100) 25(100) 20(100) 20(100)
Marginal Integrity:
Alpha 24(92) 26(100) 23(92) 24(96) 19(95) 20(100)
Bravo 2(8) 0 1(4) 1(4) 1(5) 0
Charlie 0 0 1(4) 0 0 0
Marginal Discoloration:
Alpha 25(96) 26(100) 24(96) 25(100) 20(100) 20(100)
Bravo 1(4) 0 1(4) 0 0 0
Secondary Caries:
Alpha 24(92) 26(100) 23(92) 22(88) 20(100) 18(90)
Bravo 2(8) 0 0 1(4) 0 0
Charlie 0 0 2(8) 2(8) 0 2(10)

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