Category Nuances for root-canal_therapy:

• complicated,
• traumatic,
• unnecessary,
• oral,
• preventive,
• familiar,
• endodontic,
• extensive,
• advanced,
• additional,
• painful,
• major,
• costly,
• restorative,
• dental,
• expensive,
• complex,

Simple Categories for root-canal_therapy:

• treatment,
• therapy,
• service,
• procedure,
• care,