Acquired tooth disorders- Ch. 3 Flashcards
Caries are how many times more common than asthma?
5
caries are how many times more common than hay fever
7
what is the number 1 chronic childhood illness?
caries
what is the most common reason a kid misses school?
toothache
what is the caries prevalence in kids under age 4?
38-49%
Enamel erosion can occur from intrinsic erosion. What causes intrinsic erosion?
gastric acid and acid regurgitations due to medical or physiological issues
**anorexia, acid reflux, bulemia
when looking intraorally, what gives the indication of bulimia?
Lingual surfaces are eroded
What is extrinsic erosion?
erosion that occurs when dietary acids contribute to the mouth’s being in a very acidic state
dietary acid can come from what?
. sugar, diet sodas, fruit drinks, carbonated drinks, energy drinks, etc
at what pH level does enamel begin to erode?
5.5
**soda has average ph of 2.5
when enamel wear down, 4 what things can occur?
1- teeth become discolored because you can see dentin
2- edges of front teeth look transparent
3- tooth sensitivity
4- restorations will chip and fall out, especially in primary teeth
what is external root resorption?
the breakdown or destruction and subsequent loss of the root structure of a tooth.
what causes external root resorption?
living body cells attacking part of the tooth
*happens in both perm. and primary teeth
What results from pressure on the root surface. It can be from trauma, ectopic teeth erupting in the path of the root, chronic inflammation. Most common cause is Orthodontics!
Root resorption of secondary teeth
What is Ectopic root resorption
Whenever the crown of one tooth, comes close or in contact with the root of another tooth
what is internal root resorption?
root and dentin resorb within root canals
what cause internal root resorption?
trauma, and sometimes unknown etiology
How can a dentist cause internal root resorption?
the pulp can react to materials and methods used during pulpotomy
is a primary tooth more likely to move within the bone or fracture?
move within bone because the surrounding bone isn’t as thick as it is with permanent teeth
what are the 6 soft tissue problems listed in the lecture?
1-Acute & Chronic Alveolar Abscess 2-Cellulitis 3- Gingivitis 4-Periodontal Disease 5-Soft Tissue Trauma 6-Benign & Malignant Lesions
what is a acute alveolar abscess?
It is a chemical bacterial and mechanical irritation but usually due to bacterial invasion from death of pulp tissue
what happens when the swelling becomes extensive?
it results into cellulitis and the patients facial appearance changes
what is cellulitis?
diffuse infection of the soft tissues
does cellulitis occur more in adults or kids
younger children
what causes cellulitis?
primary or permanent pulpal necrosis
clinically how is cellulitis characterized?
by considerable swelling of face or neck due to collateral edema and a spreading fascial infection
is cellulitis painful?
yes. May have difficulty sleeping or eating
what results from long standing, low grade infection of the periradicular bone?
chronic alveolar abscess
is chronic alveolar abscess painful?
No. generally no obvious signs or sypmptoms
Gingivitis
bacteria in plaque…easy bleeds…no bone loss
what percentage of americans have periodontal disease?
75%
the benign lesions Papilloma and Verruca vulgaris are described how?
Firm; non-tender; fixed to the surface; rough or cauliflower surface; pale
leukemias and brain cancers are responsible for what percentage of childhood cancer?
more than 50%
leukemias are responsible for what percentage of childhood cancers?
33.3333333%
is an odontoma a neoplasm or harmatoma?
harmatoma
what is an odontoma composed of?
mature
Enamel, dentin, and pulp tissue
what is the most common odontogenic tumor?
odontoma
what do odontomas interfere with?
eruption of perm teeth
when do odontomas occur?
2nd decade of life
How do compound and complex odontomas differ?
compound have denticles (tooth-like structures).
where do compound odontomas most commonly occur?
max. canine
where do complex odontomas usually occur?
posterior mandible
how do you treat an odontoma?
excision
what is gemination?
Attempted division of a single tooth germ, appears as a bifid crown on a single root.
what is fusion?
Represents the union of two independently developing primary or permanent teeth
will fusion or gemination have separate pulp chambers and canal?
fusion
what is concrescence?
fusion of teeth involving ONLY cementum
3 things about dens invaginatus
1-most common in maxillary perm. lateral incisor
2-Common pulp necrosis and abscess
3-cover with sealant or restoration
3 things about charubism
1- autosomal dominant and reduced penetrance in females
2- multilocular (soap bubble)
3-teeth exfoliate early
what can cause enamel hypoplasia?
1- defecient in vit. A, C, D, calcium, phosphorus
if you have a cleft lip or palate, what percent of people have maxillary primary anterior teeth that had one or more teeth with hypoplasia?
66%
92% with permanent
what is molar-incisor hypomineralization?
Interference with dental development at birth, or while the enamel of the permanent first molars and permanent incisors is forming may result in a qualitative effect on the mineralization of one to four of the permanent first molars with or without involvement of maxillary and mandibular permanent incisors
T/F dental fluorosis is a type of hypoplasia?
True
what are pre-eruptive caries?
defect in crowns of teeth that have not yet erupted.
*restore once erupted
what is taurodontism
the body of the tooth is enlarged at the expense of the roots. Also has huge pulp chambers
3 things about Dentinogensis Imperfecta Type I
1-primary dentition more severly effected
2- if osteogenisis imperfecta then you also have fragile bones, blue sclera, deaf, triagular scull
3-roots are taper or ribbon like
3 things about Dentinogenesis Imperfecta Type II-AD
1-most common inheratied defect in man 1:8000
2-pretty much no roots, so a lot of treatments are more complicated
3-implants are possible
Dentinogenesis Imperfecta type 3
1-branywine type
2-bell shaped appearance
3- shell tooth appearance on xray
dentin displasia type 1
radicular dentin dysplasia. Both primary and permanent teeth are affected. Autosomal-dominant trait. Root canal and pulp chambers are absent except for chevron-shaped remnant in the crown. Color is either normal or slightly opalescent or blue brown.
dentin dysplasia type 2
coronal dentin dysplasia. Autosomal-dominant trait, Primary dentition appears opalescent with obliterated pulp chambers. Permanent dentition has normal color with thistle tube pulp configuration with pulp stones.
what type of amelogenisis imperfecta is most common?
hypocalcified
*60% have open bite
hypoplastic amerogenisis imperfecta
- Hard thin enamel, small teeth, occasionally tapered
- Possible systemic causes, associated with many different syndromes i.e. Down syndrome, Treacher Collins,
HYPOMATURATION Amelogensis Imperfecta
Normal enamel thickness but with low radiodensity and quite soft
*flakes away
anodontia
no teeth
hypodontia
fewer than 6 teeth
*not including 3rd molars
oligodontia
missing more than 6 teeth
*downs syndrome and ectodermal dysplasia
hypodontia and palatally displaced canines:
Impacted or palatally displaced canines occur in 85% of unerupted canines.
in ectodermal dysplasia what teeth are commonly missing?
- Mand. Incisors and premolars
- Max. premolars
in ectodermal dysplasia what teeth are commonly present?
- Max. central incisors
- Max canines
- Max. and mand. first molars
what 3 things can intrinsically discolor a tooth?
1-blood borne pigment
2-blood decomposition of pulp from trauma
3- ZOE and composite
what do diseases can discolor a tooth?
1- Cystic Fibrosis
2-Hyperbilirubinemia
Other terms we learned in oral path: 1-macroglossia 2-Ankyloglossia 3-Fissured tongue & Geographic tongue 4-Coated Tongue 5-Black Hairy Tongue 6-Maxillary Labial Frenum 7-Frenectomy 8-Tongue Piercing
You likely already know about these things. Refer to lecture slides for review
