Direct contact.
Ballal
V
V
D019551:Dental Disinfectants / Q000009:adverse effects*; D003787:Dental Pulp Devitalization / Q000009:adverse effects / Q000379:methods; D005557:Formaldehyde / Q000009:adverse effects*; D006801:Humans; D009061:Mouth Mucosa / Q000187:drug effects; D009336:Necrosis / Q000139:chemically induced; D010020:Osteonecrosis / Q000139:chemically induced*; D011108:Polymers / Q000009:adverse effects*
D019551:Dental Disinfectants; D011108:Polymers; D005557:Formaldehyde; C003043:paraform