L112. Molar Incisor Hypomineralisation Flashcards Preview

2f. BDS2 CDS Paediatric Dentistry > L112. Molar Incisor Hypomineralisation > Flashcards

Flashcards in L112. Molar Incisor Hypomineralisation Deck (21)
Loading flashcards...
1

L112: What is molar incisor hypomineralisation?

Hypomineralisation of systemic origin of 1-4 permanent molars, frequently associated with affected incisors

2

L112: In the seventies, where was there an increased number of idiopathic cases of hypomineralised teeth?

Sweden

3

L112: What does 'hypomineralised' mean?

Disturbance of enamel formation resulting in a reduced mineral content

4

L112: What does 'hypoplastic' mean?

Reduced bulk or thickness of enamel

5

L112: What does 'true' hypoplasia mean?

Enamel never formed

6

L112: What does 'acquired' hypoplasia mean?

Post-eruptive loss of enamel bulk

7

L112: Why is the aetiology of MIH unclear?

- Unclear diagnostic criteria;
- Parents cannot recall details from 8-10 years ago;
- Variation in quality of medical records;
- Study populations small.

8

L112: When is the enamel matrix of crowns usually complete?

First year of life

9

L112: When diagnosing the cause of MIH, what're the three periods for clinical enquiry?

- Pre-natal;
- Natal;
- Post-natal.

10

L112: In which pregnancy trimester can problems cause MIH?

Third

11

L112: Provide examples of prenatal problems that can result in MIH in the foetus/ baby?

- Pre-eclampsia;
- Gestational diabetes.

12

L112: Provide examples of perinatal problems that can result in MIH in the foetus/ baby?

- Birth trauma/ anoxia;
- Hypocalcaemia;
- Pre-term birth.

13

L112: Provide examples of post natal problems that can result in MIH in the foetus/ baby?

- Certain childhood infections (chicken pox, measles, rubella);
- Fever and medication;
- Socioeconomic status (nutrition);
- Breast feeding (dioxins in breast milk or prolonged feeding).

14

L112: Histologically, what changes can be seen with the chemical composition of hypomineralised teeth?

- Higher carbon content;
- Lower calcium and phosphate content.

15

L112: What research suggests a presence of underlying pulpal inflammation with hypomineralised teeth?

- Increased neural density;
- Increased accumulation of immune cells;
- Increased vascularity.

16

L112: Why are hypomineralised teeth often more sensitive?

- Dentine hypersensitivity (porous enamel or exposed dentine facilitates fluid flow within dentine tubules - activates Ad fibres);
- Peripheral sensitisation (underlying pulpal inflammation - c fibres);
- Central sensitisation (from cont. nociceptive input).

17

L112: Alongside sensitivity, what other clinical problems are associated with MIH?

- Loss of tooth substance (wear/ secondary caries);
- Appearance.

18

L112: What treatment options are there for treating MIH?

- Composite/ GIC restorations;
- Stainless steel crowns;
- Adhesively retained copings;
- Extraction (8.5-9.5 y/o).

19

L112: What treatment options are there for treating affected molars?

- Composite/ GIC restorations;
- Stainless steel crowns;
- Adhesively retained copings;
- Extraction (8.5-9.5 y/o).

20

L112: What should you consider before extracting a affected molars in children?

- Age;
- Skeletal pattern;
- Future orthodontic needs;
- Quality of teeth e.g. caries.

21

L112: What treatment options are there for treating affected incisors?

- Acid pumice micro abrasion;
- External bleaching;
- Localised composite placement;
- Full composite or porcelain veneers.