Ch 66 - Dentistry for the Surgeon

Question 1

What is the maximal normal gingival sulcus depth in cats and dogs?

Answer 1

• Cats: No deeper than 0.5mm
• Dogs: No deeper than 3mm

Question 2

What is the dental formula of cats and dogs?
What is the system of naming teeth called?

Answer 2

Modified Triadan System

Question 3

Which jaw contains three-rooted teeth?

Answer 3

The maxilla

Question 4

What local anaesthetics can be used for nerve blocks?
How long does each last?
What is the maximum dose?

Answer 4

Bupivicaine 0.5%
- Lasts 6-10hr
- Maximum 2mg/kg in dog and cat

Mepivicaine 2%
- Lasts 4hr
- Maximum dose ?

Lidocaine 2%
- Lasts less than 2hr
- Maximum dose 5mg/kg in dogs, 1mg/kg in cats

Adding buprenorphine or dexmedetomidine may prolong effects for up to or beyond 24hr

Question 5

What nerve blocks can be used in the oral cavity?

Answer 5

• Maxillary nerve block
• Infraorbital nerve block
• Major palatine nerve block
• Inferior alveolar nerve block
• Middle mental nerve block

Question 6

How does an open extraction differ from a closed extraction?

Answer 6

For an open extraction a mucoperiosteal flap is elevated to allow removal of alveolar bone

Question 7

What are the 2 main options for mandibulomaxillary fixation?
What are some general recommendations?

Answer 7

• Tape/leather/plastic muzzle
• Bis-acryl composite bridges (most commonly from mandibular to maxillary canines)

Should be snug enough to maintain dental interlock for stability but loose enough (gap of 0.5-1cm in cats, 1-1.5cm in dogs) to allow lapping up water and semi-liquid food

Question 8

What are the two most common forms of interdental wiring?

Answer 8

• Stout multiple loop technique
• Risdon wiring technique

At least 2 teeth per fragment should be included
Can place wire subgingivally to prevent slippage
MUST be combined with composite splint (placed lingually on mandibular teeth, bucally on maxillary teeth)