Retreatment Flashcards
Reeh et al. JOE 1989
The endodontic procedures (access + mechanical + obturation) reduced tooth stiffness by only 5% which is contributed entirely by the access opening.
Endodontic procedures do not weaken teeth with intact marginal ridges.
Restoratives procedures were the greatest contributor to loss of tooth stiffness.
The loss of marginal ridge integrity was the greatest contribution to loss of tooth strength
The endodontic procedures (access + mechanical + obturation) reduced tooth stiffness by only 5% which is contributed entirely by the access opening.
Endodontic procedures do not weaken teeth with intact marginal ridges.
Restoratives procedures were the greatest contributor to loss of tooth stiffness.
The loss of marginal ridge integrity was the greatest contribution to loss of tooth strength
Reeh et al. JOE 1989
Sedgley & Messer JOE 1992
Teeth do not become more brittle following endodontic treatment.
Teeth do not become more brittle following endodontic treatment.
Sedgley & Messer JOE 1992
Huang et al. JOE 1992
Results of this study do not support the theory that deshydratation after RCT weakens dentin structure in terms of compressive and tensile strengths.
Results of this study do not support the theory that deshydratation after RCT weakens dentin structure in terms of compressive and tensile strengths.
Huang et al. JOE 1992
Ray & Trope IEJ 1995
The technical quality of the coronal restoration is significantly more important than the technical quality of the endodontic treatment for apical periodontal health.
The technical quality of the coronal restoration is significantly more important than the technical quality of the endodontic treatment for apical periodontal health.
Ray & Trope IEJ 1995
Orstavik IEJ 1996
Roots without preo-op PAR showed development of the disease in 6% of cases. Most cases (76%) were detectable at 1 year.
Roots with preop-op PAR showed improvement in 75% of the cases. Most of which (51%) were detectable at 1 year.
The rates of developing or healing of PAR were the same at 1 year.
Factors other than RCT itself may contribute to PAR development later than 1 year after treatment.
Complete healing of cases with preop PAR may take up to 4 years.
Roots without preo-op PAR showed development of the disease in 6% of cases. Most cases (76%) were detectable at 1 year.
Roots with preop-op PAR showed improvement in 75% of the cases. Most of which (51%) were detectable at 1 year.
The rates of developing or healing of PAR were the same at 1 year.
Factors other than RCT itself may contribute to PAR development later than 1 year after treatment.
Complete healing of cases with preop PAR may take up to 4 years.
Orstavik IEJ 1996
Bertrand et al. JOE 1997
Removal of plastic carrier and measurement of the proper working length were easily performed using manual endodontic instruments.
Chloroform greatly enhanced this procedure.
Removal of plastic carrier and measurement of the proper working length were easily performed using manual endodontic instruments.
Chloroform greatly enhanced this procedure.
Bertrand et al. JOE 1997
Sundqvist et al. OOOE 1998
The microbial flora in canals after failed RCT differed markedly from the flora in untreated teeth.
Infection at time of root filing & size of the PAR had a negative influence on prognosis.
The microbial flora in canals after failed RCT differed markedly from the flora in untreated teeth.
Infection at time of root filing & size of the PAR had a negative influence on prognosis.
Sundqvist et al. OOOE 1998
Chutich et al. JOE 1998
The amount of solvent that has been determined to have leached-out through the apical foramen is several orders of magnitude below the permissible toxic dose.
Use of any of the solvents during retreatment would pose negligible risk to the patient.
