• Heitor G Araújo-Filho, Erik W M Pereira, Adriana Rolim Campos, Lucindo J Quintans-Júnior, and Quintans Jullyana S S JSS 0000-0001-6507-8982 a Laboratory of Neuroscience and Pharmacological Assays (LANEF), Department of Physiology , Federal Univ.
• a Laboratory of Neuroscience and Pharmacological Assays (LANEF), Department of Physiology , Federal University of Sergipe , São Cristóvão , Brazil.
• Expert Opin Drug Discov. 2018 Oct 1; 13 (10): 949-964.

IntroductionChronic orofacial pain is one of the most common pain conditions experienced by adults. Animal models are often selected as the most useful scientific methodology to explore the pathophysiology of the disorders that cause this disabling pain to facilitate the development of new treatments. The creation of new models or the improvement of existing ones is essential for finding new ways to approach the complex neurobiology of this type of pain. Areas covered: The authors describe and discuss a variety of animal models used in chronic orofacial pain (COFP). Furthermore, they examine in detail the mechanisms of action involved in orofacial neuropathic pain and orofacial inflammatory pain. Expert opinion: The use of animal models has several advantages in chronic orofacial pain drug discovery. Choosing an animal model that most closely represents the human disease helps to increase the chances of finding effective new therapies and is key to the successful translation of preclinical research to clinical practice. Models using genetically modified animals seem promising but have not yet been fully developed for use in chronic orofacial pain research. Although animal models have provided significant advances in the pharmacological treatment of orofacial pain, several barriers still need to be overcome for better treatment options.

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