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Table 3 Perceptions, clinical experience, and continuing education aspects of GDPs and PDs regarding MIH

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

Questions

All n (%)

GDPs n (%)

PDs n (%)

p-value

Do you encounter teeth with MIH in your practice? (YES)

 

198 (77.6)

172 (75.4)

26 (96.3)

0.025#

What is/are the most frequent type of defect seen in your practice?

White demarcated

60 (23.8)

52 (23.1)

8 (29.6)

0.177

Yellow/brown demarcations

114 (45.2)

104 (46.2)

10 (37.0)

Post-eruptive breakdown

57 (22.6)

48 (21.3)

9 (33.3)

None

21 (8.3)

21 (9.3)

0 (0.0)

In what other permanent teeth have you encountered MIH-like defects?

Premolars

110 (43.3)

92 (40.5)

18 (66.7)

0.010*

Second permanent molars

63 (24.7)

55 (24.1)

8 (29.6)

0.530

Canines

67 (26.3)

61 (26.8)

6 (22.2)

0.613

Do you notice these defects in the primary dentition? (YES)

 

59 (23.3)

49 (21.6)

10 (38.5)

0.054

Do you feel the incidence has increased in the period of your practice? (YES)

 

40 (15.7)

33 (14.5)

7 (25.9)

0.157

Would you refer a child who has signs of MIH to a paediatric dental specialist?

Yes or when possible

146 (57.3)

132 (57.9)

14 (51.9)

0.548

No

109 (42.7)

96 (42.1)

13 (48.1)

Do you think MIH represents a clinical problem that could come next to dental caries in public health? (YES)

 

113 (44.5)

98 (43.2)

15 (55.6)

0.221

What type of preventive treatment do you often use to treat these teeth? (Only those YES answers are shown)

Fluoride varnish

215 (84.6)

189 (83.3)

26 (96.3)

0.091

Silver diamine fluoride solution

24 (9.4)

19 (8.3)

5 (18.5)

0.157

Tooth mousse

90 (35.3)

79 (34.6)

11 (40.7)

0.531

Fissure sealant

107 (42.0)

90 (37.5)

17 (63.0)

0.019*

What type of treatment do you often use to treat MIH?

Microabrasion

29 (11.4)

27 (11.8)

2 (7.4)

0.493

Resin infiltration

46 (18.0)

44 (19.3)

2 (7.4)

0.185

Glass ionomer

123 (48.2)

108 (47.4)

15 (55.6)

0.421

Composite

171 (67.1)

150 (65.8)

21 (77.8)

0.210

Amalgam

14 (5.5)

11 (4.8)

3 (11.1)

0.174

Preformed crowns

62 (24.3)

51 (22.4)

11 (40.7)

0.035*

Extraction

19 (7.5)

12 (5.3)

7 (25.9)

0.001#

How do you feel about diagnosing MIH?

Very confident

20 (7.8)

11 (4.8)

9 (33.3)

0.000#

Confident

132 (51.8)

116 (50.9)

16 (59.3)

Unconfident

91 (35.7)

89 (39.0)

2 (7.4)

Very unconfident

12 (4.7)

12 (5.3)

0 (0.0)

How do you feel about treating MIH?

Very confident

10 (4.0)

7 (3.1)

3 (3.7)

0.000#

Confident

109 (43.1)

89 (39.4)

20 (74.1)

Unconfident

123 (44.6)

119 (52.7)

4 (14.8)

Very unconfident

11 (4.3)

11 (4.9)

0 (0.0)

Are you receiving any information on MIH? (YES)

 

35 (13.7)

20 (8.8)

15 (55.6)

0.000#

Would you like further training regarding tooth hypomineralization?

Diagnosis

150 (58.8)

141 (64.9)

9 (33.3)

0.002*

Aetiology

147 (57.6)

134 (58.8)

13 (48.1)

0.298

Treatment

215 (84.3)

192 (84.2)

23 (85.2)

1.000

No training

31 (12.2)

27 (11.8)

4 (14.8)

0.757

  1. Results may not add due to missing values
  2. GDPs general dental practitioners, PDs pediatric dentists, MIH molar incisor hypomineralization
  3. *Statistically significant (P < 0.05), Pearson’s chi-square (χ2) test
  4. # Statistically significant (P < 0.05) Fisher’s exact test