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Table 4 Mean optical density of microbial biofilms on orthodontic acrylic resin containing selected concentrations of CurNisNps in different time intervals

From: Antimicrobial effects and mechanical properties of poly(methyl methacrylate) as an orthodontic acrylic resin containing Curcumin-Nisin-poly(l-lactic acid) nanoparticle: an in vitro study

Microorganism type

Control

CurNisNps concentrations (%)

1

2

3

Days

1

15

30

60

1

15

30

60

1

15

30

60

OD (570 nm)

OD (570 nm)

OD (570 nm)

OD (570 nm)

S. mutans

2.99 ± 0.26

NG

NG

NG

1.97 ± 1.7

NG

NG

NG

1.46 ± 1.3

NG

NG

NG

0.68 ± 0.27

C. albicans

3.12 ± 0.18

NG

NG

2.38 ± 0.8

3.02 ± 1.1

NG

NG

NG

2.55 ± 1.8

NG

NG

NG

1.09 ± 0.20

  1. NG: No growth