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Table 2 Percentage distribution of knowledge scores of GDPs and PDs for each question regarding MIH knowledge

From: Knowledge, perceptions, and clinical experiences on molar incisor hypomineralization among dental care providers in Hong Kong

Knowledge questions

Knowledge Scores

Percentage distribution of practitioners answered ‘YES’

p-value

Yes

No

All n (%)

GDPs n (%)

PDs n (%)

Have you been aware that MIH is a developmental defect that differs from fluorosis and hypoplasia?

 

9

0

192 (75.3)

166 (72.8)

26 (96.3)

0.007*

How prevalent do you think MIH might be in your community? (One option chosen)

< 5%

6

^

117 (46.1)

102 (44.9)

15 (55.6)

0.422

5-10%

1

^

72 (28.3)

63 (27.8)

9 (33.3)

10-20%

1

^

25 (9.8)

23 (10.5)

2 (7.4)

> 20%

1

^

8 (3.5)

8 (3.1)

0 (0.0)

Not sure

0

^

32 (12.6)

31 (13.7)

1 (3.7)

Do you think they are involved in the aetiology of MIH?

Genetic factors

5

4

175 (68.6)

161 (70.6)

14 (51.9)

0.019#

Environmental contaminants

5

4

118 (46.3)

104 (45.6)

14 (51.9)

0.539

Chronic medical conditions affecting mother and child

6

3

206 (80.8)

188 (82.5)

24 (88.9)

0.587

Acute medical conditions affecting mother or child

6

3

206 (80.8)

182 (82.5)

24 (88.9)

0.587

Antibiotics or medications

5

4

106 (41.6)

98 (43.0)

8 (29.6)

0.183

Fluoride exposure

1

8

61 (23.9)

56 (24.6)

5 (18.5)

0.486

What time/period do you think the insult occurs? (one option chosen)

During pregnancy

1

^

25 (9.9)

25 (11.1)

0 (0.0)

0.451

1st year of life

3

^

60 (23.7)

52 (23.0)

8 (29.6)

3rd year of life

0

^

28 (11.1)

25 (11.1)

3 (11.1)

Pregnancy to 1st year of life

3

^

55 (21.7)

48 (21.2)

7 (25.9)

Pregnancy to 3rd year of life

2

^

85 (33.6)

76 (33.6)

9 (33.3)

Do you think the pattern of caries related to MIH is different from the classical caries pattern?

 

7

1

167 (65.5)

145 (65.9)

22 (81.5)

0.174

Mean Knowledge Score (SD)

   

43.44 (7.0)

43.09 (7.0)

46.33 (7.1)

0.024**

Ranges

 

Min 20

Max 60

21-59

21-59

33-59

Total sample

   

255

228

27

  1. MIH molar incisor hypomineralization, GDPs general dental practitioners, PDs pediatric dentists
  2. ^Answer “No” does not apply as it was analyzed as a single choice question
  3. *Statistically significant (P < 0.05), Pearson’s chi-square (χ2) test
  4. #Statistically significant (P < 0.05) Fisher’s exact test
  5. **Statistically significant difference (P < 0.05) independent sample t-test