Historically, companies have used various tools to measure quality of service, including somewhat-outmoded techniques, such as fishbone diagrams, and quality monitoring forms.
They are respectively filaments twisted into irregular shapes, and those that are arranged in fishbone patterns, usually by uneven wind currents that favor the formation of these varieties.
Penetrating injury to the gingiva e.g. with a toothbrush bristle, fishbone, toothpick or periodontal instrument may inoculate bacteria into the tissues.
