Anomalies Flashcards
Name medical conditions associated with hypodontia (4)
- Ectodermal dysplasia
- Down syndrome
- Cleft palate
- Hurlers Syndrome
- Incontinentia pigmenti
Restorative problem you may encounter when upper laterals are missing
OE of lower canines
Management of Hypodontia in order
- Diagnosis + preventative tx
- Removable prosthesis (over denture)
- Orthodontics
- Composite build ups
- Porcelain veneers
- Crowns and bridges
Age frame for veneers
Early 20s so gum margins have reached a settled level
Predisposing factors for supernumerary teeth
M>F
Maxilla>Mandible
Different types of supernumerary
- Conical (cone shaped)
- Tuberculate (barrel shaped)
- Supplemental (normal)
- Odontome (irregular mass of dental hard tissue)
What is the most common cause of delayed eruption of permanent incisor teeth?
Supernumerary teeth
When do we remove supernumeraries
Wait till completed crown formation and started root formation
What teeth are likely to get short root anomaly?
Permanent maxillary incisors
Danger for ortho tx
Causes of short root anomaly
- Radiotherapy
- Dentine dysplasia
List examples of enamel anomalies (3)
- Amelogenesis imperfecta
- Localised + environmental enamel hypoplasia
- MIH
Causes of localised enamel hypoplasia (2)
- Trauma
- Infection of primary tooth (from caries)
Compare hypoplastic + hypomineralised teeth
HYPOPLASTIC
-Disturbance in enamel secretion
- Good quality, bad quantity
HYPOMINERALISED
- Disturbance in enamel secretion
- Bad quality, good quantity
- Normal teeth with brown/white patches
Tx of generalised environmental hard tissue defects (fluorosis)
- Microabrasion
- Veneers
- Vital bleaching
List the 4 main types of Amelogensis
- Hypoplastic
- Hypomineralised
- Hypomaturation
- Mixed with taurodontism
Biological features of Amelogenesis Imperfecta
- Autosomal dominant, recessive and X linked
- Familial inheritance
Gene mutations associated with Amelogenesis Imperfecta
Amelogenin
Enamelin
Kalikrein 4
Associated dental problems with Amelogenesis Imperfecta (6)
- Sensitivity
- Caries
- Poor aesthetics
- Poor OH
- Delayed eruption
- AOB
Tx options for Amelogenesis Imperfecta
- Preventative therapy/FV
- Composite veners
- FS
- Metal inlays
- SSC
- Orthodontics
List examples of dentine anomalies of structure
- Dentinogenesis Imperfecta (uncommon)
- Dentine dysplasia
- Odontodysplasia
- Systemic disturbance
- nutritional
- metabolic
- drugs
Compare dentinogenesis imperfecta to dentine dysplasia
Imperfecta
- Bulbous crowns
- Obliterated pulps
- Amber radiolucency
- Enamel loss
- Abscess formation
Dentine Dysplasia
- Obliterated pulps
- Amber radiolucency
- Short roots
Features of odontodysplasia
- Localised arrest in tooth development
- Thin layers of enamel + dentine
3 types of Dentinogenesis Imperfecta
Type I
Type II
Brandywine (USA)
What is Type I dentinogenesis imperfecta usually associated with?
Osteogenesis imperfecta
