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  A Graph Illustrating a Cycle of Fear and Pain  
  A graph illustrating a cycle of fear and pain. Clinical pain leads to a painfuldental therapy, followed by postoperative pain and apprehension to avoidance of dental care, which leads to dental pathology and clinical pain
  Cycle of Fear and Pain. From Raymond A. Dionne, Pain Control in Dentistry: The Basis for Rational Therapy. Compendium of Continuing Education in Dentistry v. 6 (1985): 16.
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