Complications Flashcards
Introduction of NiTi instruments has ______ the incidence of instrument separation
increased
Incidence of stainless steel instrument separation
0.25%
Incidence of NiTi rotary instrument separation
1.68%
Separation is most likely to occur in the ______ of the canal
apical third
______% of separated instruments can be removed
87%
_____ should always be obtained before treating a previously initiated RCT
New radiographs
Factors affecting perforation repair prognosis (6)
Size and location of perforation
time to repair
Provider experience
post placement following repair
ability to seal the defect
prior microbial contamination
_______ has become the gold standard material for perforation repair
MTA
Histologic repair when using MTA (3)
cementum formation
PDL reformation
normal bony architecture
Success rate of MTA perforation repair
Author
86%
Mente
Signs of sodium hypochlorite accident (4)
Immediate severe pain
immediate edema of neighboring soft tissue
profuse intracanal bleeding
ecchymosis
Treatment of NaOCl accident
Palliative – local anesthestics and analgesics
Cold compress for 24 hours followed by warm compress for circulation
Daily monitoring
Antibiotics in high risk
Corticosteroids controversial
CH extrusion _______ impact prognosis
does not
De Moor
Extrusion of CH into the mandibular canal can cause _____
parasthesia
Extruded eugenol based sealers will
resorb over time
Seltzer demonstrated a ______ reaction can result from extrusion of obturation material
foreign body
Correlation of proximity of obturation materials and the mandibular canal with ______
parasthesias
Risks of over extension of obturation material in maxillary teeth
Aspergillus infection
chronic maxillary sinusitis
Microsurgical treatment of mandibular nerve injuries should occur within ______ from injury
48 hours
Root surface temperatures should not increase by ______ to avoid PDL injury
10 degrees C
Eriksson
_____ should be used during ultrasonic or highspeed manipulation of bone
coolant