angularis nigraの例文

• The cervical embrasure usually is filled by the interdental papilla from the gingiva; in the absence of adequate gingival tissue a black angle, or Angularis Nigra is visible.
• Previously, lack of proper termology to report this condition was an issue, often colloquially termed the " black triangle "; " angularis nigra " was coined at the University of Toronto Faculty of Dentistry.