Flashcards in Pulp Deck (54)
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31
What is a pulpotomy?
removal of inflamed coronal pulp tissue leaving the intact radicular pulp, medicament then placed on top
32
When the coronal pulp is removed in a pulptomy how should you stop the bleeding of the radicular pulp?
direct pressure with sterile saline soaked cotton wool pledget
33
What is the potential problem if bleeding of the radicular pulp fails to halt following application of cotton wool and sterile saline? What are the options following this?
the radicular pulp is likely to be irreversible inflamed
vital pulpectomy or XLA/GA
34
What will happen if a pulpotomy is carried out on an inflamed radicular pulp?
internal resorption will occur
35
Which two things would indicate the need for pulpectomy or extraction following opening up of the pulp chamber?
no pulp in the canal and unable to get haemostasis
36
Which medicatments can you use for a pulpotomy?
ferric sulphate (15.5%)
formocresol used to be used no longer now
37
How do you perform a ferric sulphate pulpotomy?
Apply ferric sulphate on cotton wool to the pulp and obtain haemostasis
apply once for 15 seconds and then again for 15 seconds, if bleeding not controlled with this then need to perform pulpectomy or XLA
38
By what method does formocreosol work?
It works by fixing the pulp tissue
39
What is the success rate for ferric sulphate pulpotomy?
Coll et al 2008
70-95% success
40
Which material should be used to fill then pulp chamber?
Doyle et al 2010
Zn O Eugenol
CaOH (high failure rate)
MTA shows the best outcome with 2 year survival median value. DOyle et al 2010
41
What should be placed over the crown following the Zn O Eugenol?
SSC
Waterhouse et al 2000
42
What is essential after pulpotomy and SSC placement?
follow up
absence of signs and symptoms
radiograph shows no evidence of bone loss in the furcation
no evidence of internal resorption
43
When should you do further treatment on a tooth which has had a pulpotomy and internal resorption is now present radiologically?
If the resorption extends on to the external root surface
if the patient is experiencing any signs and symptoms
44
What is a desensitising pulpotomy?
hyperalgesic pulp
poor compliance
45
What is the rationale behind a desensitising pulpotomy?
Reduce pulpal inflammation symptoms to facilitate pulp therapy later on
46
How do you perform a desensitising pulpotomy?
ledermix and GIC temp
47
How do you perform a pulpectomy? When is it indicated?
extirpate the soft tissue contents from the coronal pulp chamber and root canal
indicated when there is evidence of irreversible pulpitis or necrosis
hyperaemic pulp
48
What material is placed in the root canals following pulpectomy?
resorbable dressing
Pure ZOE
Iodoform
CaOH
Ledermix
49
What is the success rate for pulpectomy?
86% at 36months
Casas et al 2004
50
What is a potential complication following pulpectomy?
Savage et al 1986
well recognised complication is that a radicular cyst can develop therfore need radiographic monitoring
51
What is the success rate for an indirect pulp cap?
CaOH 94% Al Zayer at al 2003
52
How far from the radiographic apex do you instrument in a pulpectomy?
2mm
Welbury 2012
53
What is the evidence behind the toxicity of formocreosol? paper?
IACR (international agency for cancer reserach) 2004 showed a causal relationship between creosol and nasophryngel cancer
generally accepted that formaldehyde is toxic at the site of contact
54
