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Table 3 Two by two comparison of cell viability (MTT assay) in study groups after different days (with Post Hoc tests) (* indicates significant differences)

From: Effect of low-level laser on proliferation, angiogenic and dentinogenic differentiation of human dental pulp stem cells

 

Groups (N)

Mean Difference (SD)

P-value

Day 1

MTT no LLLI

MTT single dose LLLI (7)

-33.59 (13.89)

0.065

MTT double dose LLLI (7)

-64.78 (13.89)*

0.001

MTT single dose LLLI

MTT no LLLI (7)

33.59 (13.89)

0.065

MTT double dose LLLI (7)

-31.19 (13.89)

0.090

MTT double dose LLLI

MTT no LLLI (7)

64.78 (13.89) *

0.001

MTT single dose LLLI (7)

31.19 (13.89)

0.090

Day 7

MTT no LLLI

MTT single dose LLLI (7)

-41.96 (24.48)

0.227

MTT double dose LLLI (7)

-73.67 (24.48) *

0.020

MTT single dose LLLI

MTT no LLLI (7)

41.96 (24.48)

0.227

MTT double dose LLLI (7)

-31.70 (24.48)

0.416

MTT double dose LLLI

MTT no LLLI (7)

73.67 (24.48) *

0.020

MTT single dose LLLI (7)

31.70 (24.48)

0.416

Day 14

MTT no LLLI

MTT single dose LLLI (7)

-82.96 (12.33) *

0.000

MTT double dose LLLI (7)

-102.14 (12.33) *

0.000

MTT single dose LLLI

MTT no LLLI (7)

82.96* (12.33)

0.000

MTT double dose LLLI (7)

-19.18 (12.33)

0.290

MTT double dose LLLI

MTT no LLLI (7)

102.14 (12.33) *

0.000

MTT single dose LLLI (7)

19.18 (12.33)

0.290