random for final

Question 1

how can applied heat help in the healing process?

Answer 1

aid in body’s defenses

• vasodialtion
• increased circulation into the infected area
• removal of tissue products
• increased inflammatory cells innto the infected area

Question 2

phenoix abscess? mechanism and management

Answer 2

recrudescence of a chronic periradicular periodontisis

chronic periradicualr periodontitis that becomes an acute periradicualr abscess due to

• decreased host resistance
• increased bacterial virulence

manage same as acute periradicualr abscess

Question 3

tooth stiffness affected by conservative endo?

Answer 3

only by 5%

• an endo access with combine MOD prep– results in maximum tooth fragilization

Question 4

describe root end resection

Answer 4

component of surgical phase
- FLAT resection 3 mm of root end

• 93% reduction in incidence of lateral canals by resecting 3mm according to Hess models and 98 % reduction in apical ramifications

Question 5

degree of bevel and implication

Answer 5

ZERO DEGREE BEVEL –

deeper retrofills and decreased leakage

Question 6

retroprep whaat diension?

Answer 6

3mm

so 3mm avity prep into the root end
- use of an ultrasoninc tips

so we effectively treat 6 mm by resecting 3mm and prepping 3mm

isthmus between two canals must be incorporated into the preparation

Question 7

situations where peri-radicualr surgery may not be advisable

Answer 7

1. medically compromised patients
2. indiscriminant use of surgery (not needed)
3. unidentifies cause of failure
4. anatomic factors
   - maxillary sinus
   - mental and IAN
   - greater palatine vessels
   - short roots

Question 8

post op care of surgery

Answer 8

ice 10 minutes, 10 minutes off for 6-8 hours ideally

chlorohexidine rinse for 1 week

IBUPROFEN 1800-2400 mg/ day for 1 week
- synergistic between NSIADs and acetominophen

Question 9

sinus exposure - what do you add to post op care?

Answer 9

augmentin 875 mg bif for 10 days

0.5% neosynephrine or OTC nasal decongestants

Question 10

tooth closest to maillary sinus

Answer 10

MB root of maxillary second molar

13% of maxillary posterior teeth have a sinus communication

buccal root of max 1st pre-molar is the farthest

Question 11

anatomical considerations with mental and IAN

Answer 11

mental foramen is positioned 2mm emsial and 2.5 mm apical to the 2nd premolar apex

Question 12

situations indicating peri-radicular surgery

Answer 12

1. anatomic problems
2. procedural accidents
3. irretreivable materials in the canal
4. persistent symptoms
5. horizontal apical fractures
6. biopsy
7. repair of resorptive / perforation defects
8. root amputation and hemisection