Developmental Disturbances Flashcards
Affects the adult and baby teeth.
Amelogenesis Imperfecta
3 Stages of enamel formation affected in amelogenesis imperfecta.
1) Elaboration
2) Mineralization
3) Maturation
Amelogenesis Imperfecta is often associated with this.
Anterior open bite.
4 Types of Amelogenesis Imperfecta
1) Hypoplastic
2) Hypomature
3) Hypocalcified
4) Hypomature-Hypocalcified with taurodontism
AI where there’s not enough quantity of enamel.
Hypoplastic
AI where there’s normal thickness of enamel, but mineral content is low.
Hypomature
This type of AI is soft and fragile.
Hypocalcified
This AI is mottled, pitted, and associated with tricho-dento-osseous syndrome.
Hypomature-Hypoplastic with taurodontism
This defect is autosomal DOMINANT
Dentinogenesis Imperfecta
Amorphic, disorganized, atubular circumpulpal dentin.
DI
Color from DI.
Blue-brown with translucence.
Enamel is normal, but tends to chip away.
DI
DI is prone to what?
Abscesses
Crowns in DI
Bulbous or shelled with early pulp chamber obliteration in bulbous.
Large pulp chambers in shelled teeth.
Roots in DI
Short
Has bulbous or shelled crowns with short roots.
DI
Variation of DI.
Shelled teeth with large pulp chambers.
Types of DI
Shields Type 1, 2, and 3.
Osteogenesis Imperfecta is seen in this type of DI.
1
Blue sclera are seen in this type of DI.
1
Primary teeth are more affected in this type of DI.
1
Periapical RL’s and amber translucence is seen in this type of DI.
1
Both dentitions affected in this type of DI.
2
Same clinical findings as Type 1, without the osteogenesis imperfecta.
2
Brittle bones
Bowing of limbs
Temporal bossing
Blue sclera
Type 1
Seen in this type of DI.
Bell shaped crowns
Shell teeth
Multiple pulp exposures
Type 3
Contraindicated if a patient has Osteogenesis Imperfecta
Physical restraint- can break their bones.
Types of Dentin Dysplasia
Shields Type I and II
Shields Type I Dentin Dysplasia
Radicular
Both dentitions are affected in this DD
Type 1
Short, blunted roots in this type of DD.
Type 1
Normal color of crowns in this type of DD.
1
Obliterated pulp chambers and mobility in this type of DD.
Type 1 (mobility from blunted roots).
Amber colored primary teeth in this type of DD.
Type 2
Normal root length in this type of DD.
Type 2
Coronal part of tooth affected in this type of DD.
Type 2
Permanent tooth looks normal, but radiographically has thistle-tube shaped pulp with pulp stones.
Type 2 DD
This type of DD has thistle-tube shaped pulps.
Type 2
Which Vitamin is calcitriol?
D
You need Vit. D to absorb Calcium and Phosphate.
Caused by decreased reabsorption of phosphate in the kidneys.
Vit D resistant rickets/Familial hypophosphatemic Rickets
What do low serum phosphate levels lead to?
Defective calcification of:
- Teeth
- Bones (bowing of legs, frontal bossing).
Tx for Vit D resistant rickets/Familial hypophosphatemic rickets. (X- linked)
Phosphate + Calcitriol
Vit D resistant rickets have abnormal enamel or dentin?
Dentin
How do teeth look in Vit D resistant rickets?
Large pulp chambers
Enamel of Vit D resistant rickets.
Microclefts
These are difficult in MIH
- Oral Hygiene
- Anesthesia
Therapy used to treat MIH.
1) Remineralization Therapy with MI paste or Fl varnish.
2) Sealants
3) Restorations (poor bonding).
Tx for mild MIH of molars
Composite
Tx for moderate MIH of molars
SSC
Tx for severe MIH of molars
extraction
Tx for MIH on Incisors.
- Microabrasion
- Composite bonding
- Veneer
Excess Fl causes ________ enamel.
Hypomineralized
Fluorosis Tx
Microabrasion
Bonding
Veneer
