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Table 3 Distribution of oral hard/soft tissue indices between acid exposed and control group

From: Examining relationship between occupational acid exposure and oral health in workplace

Group

Control group

N = 157

Exposed group

N = 152

P

Value

 

No

Yes

No

Yes

 

Oral hard tissue

Tooth erosion

Level 0

Level 1 to 3

Level 0

Level 1 to 3

 

66.7%

33.3%

74.8%

25.2%

0.12

DMFT

DMFT = 0

DMFT> 0

DMFT = 0

DMFT> 0

 

5.7%

94.3%

15.8%

84.2%

< 0.01**

Oral soft tissue

CPITN

CPITN = 0

CPITN> 0

CPITN = 0

CPITN> 0

 

12.4%

87.6%

4.6%

95.4%

0.02*

LA

LA = 0

LA > 0

LA = 0

LA > 0

 

59.5%

40.5%

42.4%

57.6%

< 0.01**

  1. #p < 0.05 by chi-square test between exposed and control groups
  2. *p < 0.05, **p < 0.01
  3. Abbreviation: DMFT decayed, missing, and filled teeth; CPITN community periodontal index of treatment needs; LA loss of attachment