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Densitry > Dentistry Topic 7/8 > Flashcards

Dentistry Topic 7/8 Flashcards

1
Q

Feline Odontoclastic resoptive lesions are also known as? ( 2 things )

A

Resorptive lesions. Neck lesions.

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2
Q

At what age do neck lesions tend to appear?

A

4-6 years. Mature cats.

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3
Q

Where do neck lesions usually appear?

A

The “neck” of the tooth near the cemento enamel junction.

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4
Q

Neck lesions are often filled in or covered with?

A

Hyperplastic gingiva.

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5
Q

What are the cells called that form enamel?

A

Odontoclasts.

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6
Q

Neck lesions occur when what is destroyed by what?

A

Hard tissues of root surface are destroyed by odontoclasts.

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7
Q

Neck lesions appear as a ___ or ___ at the CEJ.

A

Cavity or fracture.

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8
Q

Neck lesions can travel where?

A

Under the root or the crown.

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9
Q

When we push aside the hyperplastic gingival flap, what will we see underneath if it’s a neck lesion?

A

A big hole.

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10
Q

What should we always do when we notice that a tooth is missing?

A

X-ray to make sure there are no roots left inside.

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11
Q

What are the most commonly affect teeth regarding neck lesions?
Mandibular and Maxillary

A

Mandible: 3rd PM (307,407) and 1st Molars (309,409)
Maxilla: 3rd PM (107,207) and PM 4 (108,208)

so 107,207,307,407,108,208,309,409

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12
Q

What are the clinical signs of a neck lesion?

A

Hypersalivation, head shaking, sneezing, anorexia, oral bleeding, Mostly none. Cats=Prey animals.

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13
Q

Visual/tactile exams only catch lesions in what stage? So what should we be doing?

A

Late lesions. X-ray at each cleaning.

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14
Q

What is the tx for a neck lesion.

A

Extraction

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15
Q

What is the tx for a neck lesion if the root is resorbed?

A

Crown amputation.

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16
Q

What is the cause of neck lesions?

A

May be immune mediated. Doesn’t always accompany periodontal disease.

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17
Q

What is alveolar bone expansion?

A

Bulging alveoli around one or both maxillary and/or mandibulary canines.

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18
Q

What is another name for alveolar bone expansion?

A

Alveolar osteitis.

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19
Q

What is the cause of alveolar bone expansion.

A

Chronic periodontal disease.

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20
Q

What is the tx for alveolar bone expansion?

A

Tooth extraction.

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21
Q

What is the radiographic appearance of alveloar bone expansion?

A

Bone loss around the root and expansile alveolar bone growth.

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22
Q

Cavities are seen in which species?

A

Dogs, not cats.

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23
Q

Where are the cavities seen in dogs?

A

Occlusal surfaces

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24
Q

What causes cavities?

A

Plaque.

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25
Q

How are cavities different from periodontal disease?

A

Instead of affecting periodontium the plaque causes destruction of the enamel.

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26
Q

How does bacteria/plaque cause cavities?

A

Sugar metabolites are acidic eroding the enamel.

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27
Q

What color are cavities?

A

Brown or black.

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28
Q

How do we detect cavities? ( with which tool)

A

Probe or explorer.

29
Q

How far can a cavity extend? What does this cause?

A

Dentine, pulp cavity. Periapcial abscess, pulpitis.

30
Q

What do rade reveal when we have cavities??

A

Radiolucent defects.

31
Q

What are the treatments for cavities. In which situation would you use each treatment? (2 )

A
  1. Extraction or root canal if see periapical lucdency or increased pulp-cavity.
  2. If crown structure is still sufficent we can do fillings with composite.
32
Q

How often must we monitor fillings?

A

6 months.

33
Q

What is root ankylosis?

A

Loss of PL causes abnormal fusion of roots to alveolar bone.

34
Q

What causes root ankylosing?

A

Severe Periodontal Disease

35
Q

Define anondontia.

A

Total absence of teeth.

36
Q

Define oligodontia.

A

Few teeth

37
Q

Define hypodontia.

A

Absence of a few teeth.

38
Q

What are the most commonly missing teeth?

A

Pre-molars.

39
Q

If we leave a root in, it increases the risk of what?

A

Forming a dentigerous cyst.

40
Q

What is a dentigerous cyst?

A

huge cyst forms around missing tooth cavity, root or tooth.

41
Q

What must we do if we find a dentigerous cyst?

A

Refer to dental specalist.

42
Q

Define unerupted tooth.

A

Partially or non-erupted tooth.

43
Q

Defined malocclusion.

A

Misaligned teeth.

44
Q

What are some consequences of malocclusion?

A 
Pain
accumulation of debris
pockets
PD dse
tooth loss
chronic pain
difficulty chewing
45
Q

Is it possible to prevent malocclusion?

A

Yes, if detect early can do extractions and orthodontics.

46
Q

What is the term for proper occlusion, how it should look.

A

The pinking shear effect.

47
Q

What is the canine interlock?

A

The mandibular canine fits nicely between the maxillary canine and 3rd incisor.

48
Q

What is the name for the gap between two teeth?

A

The diasthema.

49
Q

What is the term for the flat area of the incisors in the back of the tooth?

A

Cingulae.

50
Q

In a normal occlusion where should the mandibular incisors rest?

A

On the cingulae of the maxillary incisors.

51
Q

What 4 points should you use to evaluate the occlusion of a canine?

A
  1. Scissor incisor relationship.
  2. The canine interlock.
  3. The PM interdigitation ( Pinking shear effect )
  4. Head symmetry.
52
Q

Describe the pinking shear effect.

A

The cusp tips of the PM should rest in the diasthema.

53
Q

Describe the occlusion of the mesocephalic head.

A

Mandible is shorter and narrower than the maxilla. Incisors are scissor bite. Interdigitation of canine teeth not touching. Maxillary PM4 scissors with 1st molar of mandible.

54
Q

Say we have cusp to cusp pre-molars. How does this happen?

A

Either mandibular prognathism or brachygnathism.

55
Q

Prognathic =

Brachygnathic=

A

Underbite, Overbite.

56
Q

Describe the occlusion of a brachycephalic.

A

Shorter maxilla ( so underbite). Crowding and rotation of upper teeth.

57
Q

Why are brachycepalic more prone to hyperplasia of the gingiva?

A

Open mouth breathing.

58
Q

Describe the occlusion of a dolicocephalic.

A

Longer maxilla. Larger diasthema.

59
Q

What is a lance tooth? What does it result in?

A

A rostrally displaced canine. No diasthema. Crowding. Periodontal disease.

60
Q

A lance tooth is common in which breed?

A

Sheltie.

61
Q

What is an anterior ( rostral ) crossbite? What usually causes this?

A

When you have a reverse scissor bite of 1, 2 or all incisors. retained deciduous teeth.

62
Q

What is a posterior ( lingual ) crossbite?

A

PM + Mof maxilla are lingual instead of buccal

63
Q

What is a level bite?

A

When incisor teeth meet exactly. Not normal.

64
Q

Toy breeds generally have crowding of which teeth?

A

Incisors.

65
Q

Brachycephalics tend to have crowding of which teeth?

A

Premolars.

66
Q

Define Brachygnathia.

A

Shortness of one or both jaws.

67
Q

Define Prognathism.

A

Abnormal protrusion of one or both jaws.

68
Q

What is a wry bite?

A

A crooked bite

Densitry (5 decks)

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