VPT

Question 1

Indications of VPT

Answer 1

trauma
caries
restoratives
anatomical anomalies
DVPT issues

Question 2

Ideal timeline.

Answer 2

<48 hr

Question 3

Goals of VPT

Answer 3

Continued apical growth
thickening of dentinal walls
Protect pulp
Maintain vitality

Question 4

What does TGF beta do

Answer 4

when released causes up regulation of odotoblast activity

Question 5

How much pulp should be removed when performing

Answer 5

5-7 mm

Question 6

How thick should the proceeding layers be

Answer 6

MTA 1-2 mm

Question 7

Success rate of VPT

Answer 7

Depends on paper = 85-100%
MTA = 92
CaOH = 58

Question 8

CaOH Benefits

Answer 8

Salicylate sealer
antimicrobial
alkaline
stimulates. fibroblasts

Question 9

CaOH Disadvantages

Answer 9

high solubility in oral fluids
Degradation and dissolution over time
lack of inherent adhesive properties
presence of tunnel defects within the calcific barrier = failure to produce a hermetic seal to the underlying pulp against bacteria due to microleakage

Question 10

MTA benefits

Answer 10

MTA – Basic formula – 75% Portland cement, 20% bismuth, 5% gypsum (Ca)

White MTA lacks tetracalcium aluminoferrite

Biocompatible, nonabsorbable, setting not affected by presence of blood

Bactericidal
noncytotoxic, radiopaque, impervious seals, dimensionally stable

stimulates release of the dentin matrix components = leads to TGF-β1 release = upregulates odontoblast activity.

high pH
good sealing ability with the capacity to bond to dentin

Question 11

MTA disadvantage

Answer 11

long setting time
tooth discoloration
high cost
difficult handling characteristics