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 |