9. Microbiology

Question 1

Focal infection introduced

Answer 1

Hunter

Billings

Question 2

Focal innfection disproved

Answer 2

Pallasch/Wahl

Question 3

Anachoresis introduced

Answer 3

Gier/Mitchell

Question 4

Anachoresis disproved

Answer 4

Doyle/Delivanis

Question 5

Cause of AP

Answer 5

Kakehashi

Ricucci/Siqueira

Question 6

Reclassification of BPB

Answer 6

Shah/Collins

Bacteroides melaninogenicus >> Prevotella/Porphorymonas

Question 7

Black pigmented bacteria ass’c symp

Answer 7

Sundqvist

Question 8

Symp ass’c # species, not specific bac

Answer 8

Siqueira

Question 9

Endo microbes

Answer 9

Siqueira

Question 10

No bac in PARL

Answer 10

Siqueira except AAA, actino (6% extrarad)

Question 11

Bac in PARL

Answer 11

Tronstad/Barnett 97% persistent cases

Nair

Question 12

Persistent infec etio

Answer 12

Nair (intra/extra bac, foreign body extru, cholesterol crystal, cyst, scar)

Question 13

Persistent bac 1-5 species

Answer 13

Siqueira gram+ facultative anaer

Question 14

E faecalis more likely in retx than initial

Answer 14

Siqueira

Sedgley

Question 15

Efae tubule invasion

Answer 15

Love

Question 16

Efae proton pump resist CaOH

Answer 16

Evans

Question 17

Efae starvation ok

Answer 17

Sedgley

Question 18

Efae biofilm

Answer 18

Distel

Question 19

Efae in tubules not killed by CaOH

Answer 19

Haapasalo (entombed)

Question 20

Efae may not be assoc’d with disease

Answer 20

Spangberg

Question 21

Actinomyces

Answer 21

Nair (extrarad biofilm). Persistent multi sinusT

Question 22

Sulfur granules

Answer 22

Sunde

Question 23

Actino Sx + 6 wk PenVK

Answer 23

Jeansonne

Question 24

CMV, EBV, Herpes

Answer 24

Sabeti

Question 25

HIV

Answer 25

Glick (pulp)

Torabinejad (AP)

Question 26

Candida albicans in persistent AP

Answer 26

Baumgartner

Siqueira

Question 27

Tubule infec inconsequencial if well tx

Answer 27

Wesselink/Walton

Question 28

Biofilm

Answer 28

Svensater/Bergenholtz

Siqueira

Tronstad/Barnett

Question 29

Culturinig and prognosis NSD

Answer 29

Seltzer

Wesselink

Question 30

Trauma bac invade thru cracks

Answer 30

Bergenholtz

Love

Question 31

Bacteremia only if overinstrumented

Answer 31

Baumgartner

Question 32

Bacteremia in Endo Sx

Answer 32

Baumgartner (83% flap, transient)

Question 33

Prosthetic Joints Abx no need

Answer 33

ADA clinical guideliness

Question 34

Infective Endocarditis

Answer 34

AHA prev IE, heart transplant, prosthetic cardiac valve, congenital heart defect

Prophy-Abx adult: AmoxPO/AmpiIV 2g, ClindaPO/IV 600mg

Prophy-Abx child: AmoxPO/AmpiIV 50mg/kg, ClindaPO/IV 20mg/kg

Question 35

Initial Gram+ bac

Answer 35

APPLES

actinomyces, proprionibacterium, peptostreptococcus, lactobacillus, eubacterium, streptococcus

Question 36

Initial Gram- bac

Answer 36

TDPFTP

treponema, dialister, prevotella, fusobacterium, tannerella, porphorymonas

Question 37

Retx microbes

Answer 37

PACES

proprionibacterium, actinomyces, candida, E faecalis, streptococcus