dentistry Flashcards
mesial define
towards the point between the central incissors
buccal define
towards the cheeks
labial define
towards the lips
lingual define
towards the tongue
apex define
away from the crown of the tooth and toward apex of root
start of deciduous teeth eruption in dog
2-3 weeks
eruption of deciduous dog teeth complete
2-3 months
puppy deciduous teeth formula
2(I 3/3, C 1/1, PM 3/3) = 28
kitten deciduous teeth formula
2(I 3/3, C 1/1, PM 3/2) = 26
normal occlusion incisor position
maxillary incisors slightly in front of mandibular incisors
neutroclusion class and define
- class 1
- individual teeth are mal-aligned
mandibular distoclusion class and define
- class 2 malocclusion
- mandible caudal to maxilla
mandibular meisioclusion class and define
- class 3 malocclusion
- mandible rostral to maxilla
adult dog eruption time
4-6 months
adult dog dental formula
2(I 3/3, C 1/1, PM 4/4, M 2/3) = 42
deciduous teeth comparison to permanent teeth (3)
- finer
- thinner
- more delicate
define supernumerary teeth
more teeth than there should be
hypodontia define
congenital absence of a tooth
impacted/embedded teeth
teeth that have failed to erupt
consequences of impacted/embedded teeth
risk of cyst formation
enamel hypoplasia when develops
prior to eruction
cause of enamel hypoplasia
- local = trauma
- generalised = viral pyrexia
abrasion define
tooth wear against abrassive surface
attrition define
teeth wear against teeth
tertiary/reparative dentine appearance
beige/dark brown circles on worn surface of tooth
2 causes of tertiary/reparative dentine
- abrasion
- attrition
blunt trauma causes
intrinsic staining (staining inside of tooth)
primary factor to periodontal disease
plaque-bacteria toxic byproduct
plaque is..
a biofilm made of mucoid matter on teeth near the gingival margin
mineralised plaque is.
calculus or tartar
calculus helps periodontal disease by
making tooth surface more pourus for easier plaque adhesion
number of grades of periodontal diseasee
0-4
grade 1 periodontal disease
gingivitis with no evidence of attachment loss
grade 2 periodontal disease
mild periodontitis with under 25% attachment loss
grade 3 periodontal disease
moderate periodontitis with 25-50% attachment loss
grade 4 periodontal disease
severe gingivitis with over 50% attachment loss
3 appearances of grade 1 periodontal disease
- hyperaemia
- oedema
- tendency to bleed
tissue destruction in peridontal disease causes
irreversible damage
2 causes of tissue destruction in periodontal disease
- gram -ve bacteria
- bodies immune response
tissue destruction in periodontal disease causes (6)
- periodontal pocket formation
- gingival recession
- furcation exposure
- mobility
- pain/discomfort
- tooth loss
tooth mobility stages
1-3
stage 1 tooth mobility
up to 0.5mm lateral movement when crown flicked with probe
stage 2 tooth mobility
0.5-1mm lateral movement when tooth flicked with probe
stage 3 tooth mobility
over 1mm lateral movement when tooth flicked with probe
define furcation
bone loss
stage of mobility that mandibular incisors usually have
stage 2
stage 1 gingival recession
tip of probe finds furcation
stage 2 gingival recession
probe partially under tooth
stage 3 gingival recession
probe goes fully under and comes out other side
before dental procedure wash mouth out with
0.12% chlorhexidine solution
why wash mouth out before dental
to minimise bacterial aerosol
define oronasal fistula
communication between oral and nasal cavity
treatment oronasal fistula
flap surgery
white line on radiograph around tooth is..
lamina dura
lamina dura define
alveolar bone which is denser around the tooth root
thin black line around tooth on radiograph
periodontal ligament space
tooth resorption type 1
- focal lesion
- periodontal ligament still attached
tooth absorption type 2
root replacment resorption
partial loss of periodontal ligament
tooth resorption type 3
combination of type 1 and 2
stomatitis define
inflammation of oral/vestibular mucosa and beyond
- usually bilateral and symetrical
luxators appearance
thinner working blades
elevators appearance
more rounded at one end so slightly spoon shapped
winged elevator appearance
adapted to tooth shape
narrow shaft
blunts and chips easily
3 rooted tooth extraction first step
cut between 2 buccal roots and palatine root first