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JVD > JVD 2014, Issue 4 (JW) > Flashcards

JVD 2014, Issue 4 (JW) Flashcards

1
Q

Nomenclature and Classification of Odontogenic Tumors — Part I: Historical Review

I honestly could not think of any testable questions from this article

A

n/a

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2
Q

Nomenclature and Classification of Odontogenic Tumors — Part II: Clarification of Specific Nomenclature

What are the two most common odontogenic tumors in dogs?

A

Canine acanthomatous ameloblastoma

Peripheral odontogenic fibroma

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3
Q

Nomenclature and Classification of Odontogenic Tumors — Part II: Clarification of Specific Nomenclature

What does “acanthomatous” refer to?

A

Refers to prickle cells that resemble those of the epidermal stratum spinosum

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4
Q

Nomenclature and Classification of Odontogenic Tumors — Part II: Clarification of Specific Nomenclature

What is focal fibrous hyperplasia

A

It is an over-exuberant repair of fibrous connective tissue secondary to chronic gingival trauma or irritation

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5
Q

Nomenclature and Classification of Odontogenic Tumors — Part II: Clarification of Specific Nomenclature

What are the distinctive features of POFs?

A

Finely fibrillar, vascular stroma, with stellate fibroblasts resembling the periodontal ligament

Do not arise within and very rarely involve the periodontal ligament space

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6
Q

Nomenclature and Classification of Odontogenic Tumors — Part II: Clarification of Specific Nomenclature

What is pyogenic granuloma?

A

Reactive lesion of the gingiva or mucosa characterized by exuberant connective tissue proliferation in response to injury

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7
Q

Nomenclature and Classification of Odontogenic Tumors — Part II: Clarification of Specific Nomenclature

What is the histology like for feline inductive odontogenic tumors?

A

Spherical condensations of fibroblasts, resembling dental papilla, within the connective tissue stroma

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8
Q

Nomenclature and Classification of Odontogenic Tumors — Part II: Clarification of Specific Nomenclature

What is one of the few types of malignant odontogenic tumors described in dogs?

A

Ameloblastic carcinomas

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9
Q

Ocular Trauma Originating from within the Oral Cavity: Clinical Relevance and Histologic Findings in 10 Cases (2003–2013)

What comprises the orbital floor?

A

Medial pterygoid muscle
Zygomatic salivary gland
Soft palate

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10
Q

Ocular Trauma Originating from within the Oral Cavity: Clinical Relevance and Histologic Findings in 10 Cases (2003–2013)

What are characteristics of penetrating ocular injuries from the oral cavity?

A

Perforation at the 6 o’clock meridian at or posterior to the equator of the globe
Suppurative inflammation
Episcleral fibrosis on the ventral aspect of the globe
Inflammation of the orbital tissues
+/- Lens capsule rupture
Presence of bacteria

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11
Q

Ocular Trauma Originating from within the Oral Cavity: Clinical Relevance and Histologic Findings in 10 Cases (2003–2013)

How many cases discussed in this article had a history of tooth extraction(s)?

A

8 of 10 cases presented

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12
Q

Ocular Trauma Originating from within the Oral Cavity: Clinical Relevance and Histologic Findings in 10 Cases (2003–2013)

How long after dental procedure did dogs and cats present to veterinary ophthalmologist?

A

Between 3 days and 6 weeks (mean = 17.4 days, median 10-days)

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13
Q

Ocular Trauma Originating from within the Oral Cavity: Clinical Relevance and Histologic Findings in 10 Cases (2003–2013)

What treatment was performed by the ophthalmologist on call cases?

A

All underwent enucleation

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14
Q

Ocular Trauma Originating from within the Oral Cavity: Clinical Relevance and Histologic Findings in 10 Cases (2003–2013)

What appears to be a risk factor for traumatic injury to the globe?

A

Small size dog breeds (because of large, “misplaced” teeth in relatively thin bone)

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15
Q

Ocular Trauma Originating from within the Oral Cavity: Clinical Relevance and Histologic Findings in 10 Cases (2003–2013)

What are immediate treatments for globe penetration?

A

Broad-spectrum abx, anti-inflammatory, E-collar, +/- tarsorrhaphy
(poor prognosis)

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16
Q

Modified Conservative Treatment of an Extensive Dentigerous Cyst in a Dog

What is the difference between impacted and embedded teeth?

A 
Impacted = physical barrier that hinders eruption
Embedded = lack eruptive forces
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17
Q

Modified Conservative Treatment of an Extensive Dentigerous Cyst in a Dog

Which teeth are most often associated with dentigerous cysts?

A

Mandibular first premolar teeth

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18
Q

Modified Conservative Treatment of an Extensive Dentigerous Cyst in a Dog

Which breeds are statistically over-represented for dentigerous cysts?

A

Brachycephalics

Papillions

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19
Q

Modified Conservative Treatment of an Extensive Dentigerous Cyst in a Dog

What causes a dentigerous cyst to form?

A

Originate from a proliferation of the remaining enamel organ or reduced enamel epithelium that surrounds the crown during odontogenesis

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20
Q

Modified Conservative Treatment of an Extensive Dentigerous Cyst in a Dog

What causes dentigerous cyst expansion to occur?

A

Passive fluid accumulation
Epithelial cell proliferation
Release of osteoclastic mediators to aid in bone resorption

21
Q

Modified Conservative Treatment of an Extensive Dentigerous Cyst in a Dog

What are the cysts like histologically?

A

Lined by non-keratinized, stratified squamous epithelium that is 4-6 cell layers thick

22
Q

Treatment and Stabilization of Beak Symphyseal Separation Using Interfragmentary Wiring and Provisional Bis-Acryl Composite

What determines if a beak injury will heal or not?

A

Intact vascular supply to the beak

Keratinized covering

23
Q

Treatment and Stabilization of Beak Symphyseal Separation Using Interfragmentary Wiring and Provisional Bis-Acryl Composite

What is the name of the keratinized covering of the maxilla and mandible of a bird?

A

Rhamphotheca

24
Q

Treatment and Stabilization of Beak Symphyseal Separation Using Interfragmentary Wiring and Provisional Bis-Acryl Composite

What is the name of the maxillary keratinized covering in a bird? Mandibular?

A 
Maxillary = Rhinothecia
Mandibular = Gnathotheca
25
Q

Treatment and Stabilization of Beak Symphyseal Separation Using Interfragmentary Wiring and Provisional Bis-Acryl Composite

What is the name of the bony symphysis in birds?

A

The dentary

26
Q

Use of Composite Restoration Materials

What % of dogs and cats present for veterinary care have fractured teeth?

A

27% of dogs

10% of cats

27
Q

Use of Composite Restoration Materials

What does polishing material need to NOT include in order to allow chemical curing of composite to occur (2 things)?

A

Glycerin

Fluoride

28
Q

Use of Composite Restoration Materials

What is the most important rule of restorative dentistry?

A

Preservation of natural tooth structure

29
Q

Use of Composite Restoration Materials

For which classes of restorations should you bevel the cavosurface margins?

A 
Should in class III-VI (better retention) 
Should not for I or II (because enlarges the surface area of the restoration)
30
Q

Use of Composite Restoration Materials

How does acid etch improve bond strength?

A
  1. Dentin is demineralized, exposing connective tissue for bonding
  2. Collagen fibers within dentinal tubules are opened, exposing more micropores for infiltration by the resin
  3. Removes “smear layer”
31
Q

Use of Composite Restoration Materials

What is the most commonly used acid etchant?

A

Phosphoric acid (10-38% gel or solution on dentin; 35-38% gel on enamel)

32
Q

Use of Composite Restoration Materials

For how long should acid etch be applied?

A

20 seconds on enamel

10-15 seconds on dentin

33
Q

Use of Composite Restoration Materials

Why is prolonged drying after acid etching bad?

A

Decreases bonding strength because it flattens out collagen fibers, which decreases the surface area for bonding.

34
Q

Use of Composite Restoration Materials

How long does bonding agent last?

A

3-12 months

35
Q

Use of Composite Restoration Materials

How deep do bonding agents penetrate?

A

200-400 microns into dentin

36
Q

Use of Composite Restoration Materials

How did first and second generation bonding agents work?

A

Dentin was not etched, and so bonding strength was based on bonding to the smear layer

37
Q

Use of Composite Restoration Materials

How did third generation bonding agents work?

A

Separate primer and adhesive; used acid etchant; only partial removal of smear layer

38
Q

Use of Composite Restoration Materials

What are fourth generation bonding agents?

A

Remove the smear layer completely and create hybrid layer (= forms from polymerized methacrylate and dentin

39
Q

Use of Composite Restoration Materials

What are fifth generation bonding agents like?

A

One-bottle system that combines primer and adhesive into one solution, to be applied after total etch technique

40
Q

Use of Composite Restoration Materials

What is special about 6th and 7th generation bonding agents?

A

One-step - no need to acid etch or rinse first

Bonding occurs by incorporating the agent into the existing smear layer

41
Q

Use of Composite Restoration Materials

What are the disadvantages of 6th and 7th generation bonding agents?

A

Must continually be reapplied to refresh the exposed surface
Do not etch enamel well
Bond strength is lower than 5th generation

42
Q

Use of Composite Restoration Materials

Do you need retention features with composite resins?

A

No, because they have a strong bonding strength

43
Q

Use of Composite Restoration Materials

How can composite polymerization take place?

A

Via either chemical-cure, light-cure, or dual-cure

44
Q

Use of Composite Restoration Materials

What wavelength of light polymerizes/cures composite?

A

460-480 nm

45
Q

Use of Composite Restoration Materials

Which types of composite have the best durability and strength?

A

Macrofill and intermediate fill (refers to size of particles)

46
Q

Use of Composite Restoration Materials

What are the advantages of hybrid composite?

A

Combine micro- and intermediate-sized particles for good strength, durability, and esthetics

47
Q

step-by-step: Total Mandibulectomy in the Dog

What % of oral tumors in the dog are malignant

A

6%

I don’t think this is really true, but I swear the article says this

48
Q

step-by-step: Total Mandibulectomy in the Dog

Which muscle is elevated from the lingual aspect of the mandible, to access the inferior alveolar pedicle?

A

Genioglossal muscle

49
Q

step-by-step: Total Mandibulectomy in the Dog

Which muscles need to be dissected/transected during total mandibulectomy?

A 
Genioglossal
Mylohyoid
Digastricus
Medial pterygoid
Masseter
Lateral pterygoid
Temporal muscle

JVD (9 decks)

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