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Table 1 Students’ responses to the survey questions

From: Knowledge, attitudes, and beliefs regarding molar incisor hypomineralisation amongst Swiss dental students

Question

Total response rate (%)

Percentage distribution of positive answers: n (%)

1. Are you familiar with MIH?

100

Yes: 112 (99%)/No: 1 (1%)

1″. If so, how did you hear about it?

100

Dental journal: 15 (13%)

Lecture: 104 (92%)

Lecture notes: 40 (35%)

Brochures: 2 (2%)

Internet: 19 (17%)

Books: 14 (12%)

Clinical courses: 56 (50%)

Other students: 12 (11%)

Other: parents; paediatric dentist; radio

Do you know the clinical features of MIH?

100

Yes: 111 (98%)/No: 2 (2%)

3. Do you have any difficulty distinguishing MIH from other tooth malformations?

99

Yes: 81 (72%)/No: 31 (28%)

3″. If so, which?

99

Dental fluorosis: 26 (23%)

Enamel hypoplasia: 55 (49%)

Amelogenesis imperfecta: 65 (58%)

Dentinogenesis imperfecta: 25 (22%)

4. Which factors do you think are involved in the aetiology of MIH?

99

Genetic factors: 92 (82%)

Chronic medical condition(s) that affect the mother during pregnancy: 52 (46%)

Chronic medical condition(s) that affect the child: 41 (37%)

Antibiotics/medications taken by the mother during pregnancy: 42 (38%)

Antibiotics/medications taken by the involved child: 23 (21%)

Environmental contaminants: 48 (43%)

Acute medical condition(s) that affect the mother during pregnancy: 37 (33%)

Acute medical condition(s) that affect the involved child: 28 (25%)

Fluoride exposure: 5 (4%)

None: 1 (1%)

Other: No one knows; defect of mineral content; unclear; plasticisers

5. Do you know the prevalence of MIH in Switzerland?

98

Yes: 22 (20%)/No: 89 (80%)

5″. Where do you estimate the prevalence of MIH in Switzerland to be?

97

0–25%: 99 (90%)/25–50%: 11 (10%)/> 50%: 0 (0%)

6. Do you think it is worth investigating the MIH prevalence in Switzerland?

100

Yes: 103 (91%)/No: 10 (9%)

7. Are you capable of diagnosing a patient with MIH?

99

Yes: 39 (35%)

No: 6 (5%)

Not sure: 67 (59%)

8. How often do you see teeth with MIH in your clinical courses?

100

Never: 56 (50%)

Weekly: 2 (2%)

Monthly: 11 (10%)

Yearly: 44 (39%)

9. In what proportion of your patients do you observe MIH teeth approximately?

97

< 10%: 104 (95%)

10–25%: 5 (5%)

> 25%: 1 (1%)

10. Which of the following features do you see most frequently in MIH teeth?

98

White defects: 27 (24%)

Yellow–brown defects: 63 (57%)

Defects with enamel loss: 8 (7%)

Other: combination of above (× 9); never seen (× 4)

11. How confident do you feel when diagnosing MIH?

100

Very confident: 0 (0%)

Confident: 14 (12%)

Slightly confident: 52 (46%)

Not confident at all: 47 (42%)

12. Do you know if there are clinical criteria to diagnose MIH?

99

Yes, and I know how to use clinically: 34 (30%)

Yes, but I don’t know how to use clinically: 56 (50%)

No: 22 (20%)

13. Have you seen demarcated hypomineralised permanent teeth defects in your patients that were not the first permanent molars and incisors?

99

Yes: 29 (26%)/No: 83 (74%)

13″. If so, please name the tooth

 

Premolars (× 10); canines (× 7); 2nd molar (× 4); deciduous teeth (× 2); all teeth

14. How often have you noticed demarcated hypomineralised lesions in the second primary molars in comparison to the first permanent molar tooth?

100

More often: 4 (4%)

Less often: 28 (25%)

As common as the 1st permanent molar: 5 (4%)

Never seen: 76 (67%)

15. Which material do you think is best for treating MIH molars?

100

Amalgam: 1 (1%)

Composite: 75 (66%)

Flowable composite: 33 (29%)

Resin-modified glass ionomer cement: 19 (17%)

Compomer: 6 (5%)

Glass ionomer cement: 25 (22%)

Preformed stainless-steel crown: 29 (26%)

Indirect restoration (CEREC): 32 (28%)

Other: Ceramic; crown (2x); depends on severity; fluoride; Fuji Triage (2x); Icon; orthodontic-bands

16. Which factors influence your choice of restorative material?

100

Adhesion: 90 (80%)

Aesthetics: 57 (50%)

Patient/parent preference: 33 (29%)

Durability: 70 (62%)

Remineralising potential: 39 (35%)

Hypersensitivity: 46 (41%)

Personal experience: 22 (19%)

Research findings: 42 (37%)

17. Do you think MIH is a relevant clinical problem?

100

Yes: 107 (95%)/No: 6 (5%)

17″. If so, what are your difficulties?

100

Diagnosis: 66 (58%)

Aesthetics: 32 (28%)

Achieving adequate local anaesthesia: 14 (12%)

Determining the restoration margins of affected enamel: 27 (24%)

Providing adequate restoration: 49 (43%)

Long-term restoration success: 69 (61%)

Achieving patient comfort (for function and oral hygiene: 43 (38%)

18. Would you suggest including clinical training regarding MIH in your clinical course?

100

Yes: 101 (89%)/No: 12 (11%)

18″. In which area(s) do you think you need to know/be taught about the most?

100

Diagnosis: 90 (80%)

Aetiology: 46 (41%)

Treatment: 97 (87%)

Other: long-term prognosis; practical treatment; prevention

  1. Multiple choices were allowed