fail RCT Flashcards
reported that failure of root canal treatment was associated with infection that remains in the root canal system.
Sjogren et al. (1997) and Sundqvist et al. (1998)
The failure of root-canal treatment is related to the persistence of infection in the root-canal system
[Sjogren 1997 - 55 single visit one rooted txs. Cultured prior to obturation. 94% w/ neg cultures were successful after 5 yrs. 68% of pos cultures were successful after 5 yrs. Presence of cultivable bacteria sig affects the success rate. Big proponents of CaOH2 to kill remaining bacteria]
Sjogren et al. 1997, Sundqvist et al. 1998
Persistent infections may be difficult to eradicate, and they are the main cause of treatment failure
Siqueira 2001
Major factors associated with endodontic failure are the persistence of microbial infection in the root canal system and/or the periradicular area
Nair et al. 1990
Bacteria almost always cause of post RCT disease
Ricucci 2009
Longstanding infections with an established microflora in the root of the tooth, microbial invasion of the periapical lesion takes place even in asymptomatic teeth.
Sunde 2000
if microorganisms persist in the root canal at the time of root filling or if they penetrate into the canal after filling, there is a higher risk that the treatment will fail
Byström et al. 1987, Sjögren et al. 1997
How high the risk of reinfection will be is dependent on the quality of the root filling and the coronal seal
Saunders & Saunders 1994
Ramifications comprise potential pathways through which bacteria and/or their products from the necrotic root canal might reach the periodontal ligament and cause disease
Ricucci & Siqueira 2010
close to half of the failures seen in the study were due to crown fractures.
Vire et al 1991
one-third of endodontically treated teeth requiring extraction are lost because of periodontal problems
Vire et al 1991
