Periodontal disease


A bacterial infection that destroys the attachment fibers and supporting bones that hold the teeth in the mouth. Left untreated, periodontal disease can lead to tooth loss. The main cause of periodontal disease is bacterial plaque, a sticky, colorless film that constantly forms on teeth.

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  • Periodontics

    The branch of dentistry that is concerned with prevention, diagnosis, and treatment of diseases that affect the gums and supporting structures of the teeth.

  • Periodontitis

    Gum disease. The word “periodontitis” literally means “inflammation around the tooth.” Periodontitis and all periodontal diseases are bacterial infections that destroy the attachment fibers and supporting bone that hold the teeth in the mouth. Left untreated, these diseases can lead to tooth loss. The main cause of periodontal disease is a bacterial plaque, a sticky, […]

  • Perionychia

    An inflammation of the folds of tissue surrounding the nail due to infection. If caused by an infection, it may be bacterial (most commonly, staph or strep) or fungal in origin. The word is composed of “peri-” meaning around or surrounding + the Greek word “onyx” for nail = around the nail.

  • Perionychium

    The tissue surrounding the nail, whether it be a fingernail or a toenail, including the tissue bordering the root and sides of the nail. The word is composed of “peri-” meaning around or surrounding + the Greek word “onyx” for nail = around the nail.

  • Perioperative

    Literally, around (the time of) surgery. More specifically, the period of time extending from when the patient goes into the hospital, clinic, or doctor’s office for surgery until the time the patient is discharged home.


Disclaimer: Periodontal disease definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.