A case that was more challenging than what it looks like.
86-year-old female
Diagnosis: Pulp necrosis + symptomatic apical periodontitis
Clinical Challenge: Extremely calcified canals under a 50+ year-old crown with good margins and no decay. Extraction was not an option due to the patient’s injectable bisphosphonate therapy (risk of osteonecrosis) and overall frailty.
Access through existing crown and identified 4 highly sclerotic canals.
Conservative shaping using Denco Chameleon Dual Shaper file sequence.
Irrigation protocol:
• 5.25% NaOCl 17% EDTA flush with distilled water in between and as final flush using Irriflex tip.
Sonic activation for enhanced disinfection
Obturation: Bio-C BC sealer with hot modified technique.
Why Chameleon Dual Shaper?
• Excellent for preserving pericervical dentin
• Sharp, efficient cutting thanks to unique cross-section
• Continuous taper for smooth debris removal
• Non-cutting guiding tip (~3mm) adds safety in curved/calcified canals, reducing risk of ledging or perforation
Outcome: Clean, conservative RCT with minimal structural compromise — a true test of skill and precision.
