Failure

Question 1

What are the success rates of RCT?

Answer 1

Without PAP = 96%
With PAP = 86%
Re-RCT = 62%

Question 2

How is success defined?

Answer 2

• No symptoms
• Retention
• Function
• Radiographic evidence of healing

Question 3

What are the reasons for RCT failure?

Answer 3

• Under-extended root filling
• Over-extended root filling
• Poorly compacted root filling
• Poor coronal seal

BEFORE

• Misdiagnosis
• Poor case selection

DURING

• Missed canals
• Ineffective cleaning, shape or fill
• Iatrogenic damage

AFTER

• Recurrent caries
• Coronal leakage
• Perforation with post

Question 4

What are the treatment option if RCT fails?

Answer 4

• Monitor
• Orthograde retreatment
• Periradicular surgery
• Extract