View Glossary of Periodontal Terms

Acknowledgement

The Academy would like to thank the following for their assistance in updating the AAP's Glossary of Periodontal Terms.

Task Force to Update the Glossary of Periodontal Terms
Drs. Sharon R. Bannister, Chair and Douglas R. Dixon, Vice-Chair
Drs. James B. Barnes, Frederick C. Bisch, Casey M. Campbell, Margaret Hill, Robert A. Faiella, Cristina Cunha Villar, and S. Jerome Zackin.

Periodontal Postdoctoral Students and Faculty at the following institutions 

Baylor College of Dentistry, Georgia Health Science University. Louisiana State University. Naval Postgraduate Dental School, Ohio State University, Oregon Health Science University School of Dentistry, Tufts University, UCLA, University Louisville, University of Florida - College of Dentistry, University TN Health Science Center, University of Illinois-Chicago, University of Iowa, University of Kentucky, University of Maryland, University of Michigan, University of Pittsburgh, University of Texas Health Science Center- Houston, University of Texas Health Science Center- San Antonio, US Army, Wilford Hall 59th Medical Wing

AAP members are invited to post comments on terms by clicking on the term and using the comment feature at the bottom of the definition. The In-Service Examination Committee will review comments to identify terms that need to be updated and those updates will be posted to the Glossary. An updated PDF of terms will be created in 2013 and available on perio.org.


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ABFRACTION: The hypothetical process leading to the loss of cervical tooth structure due to a combination of abrasion, erosion, and/or occlusal forces; data supporting this term as a discrete clinical entity are equivocal. See also ABRASION and  EROSION.

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ABRASION: The wearing away of tooth structure or restorative material through an abnormal mechanical process. Examples include gingival and dental abrasions due to incorrect brushing.
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Glossary Tags : Diagnostic Terminology
ABSCESS: Localized collection of purulent exudate (pus) in a cavity formed by the disintegration of tissues due to an infectious process or foreign material.
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Glossary Tags : Oral Pathology and Oral Medicine
ABSCESS: ACUTE ABSCESS: Abscess of rapid onset, typically producing pain and local inflammation.
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ABSCESS: APICAL ABSCESS: Inflammatory condition characterized by formation of purulent exudate involving the dental pulp or pulpal remnants and the tissues surrounding the apex of a tooth.
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ABSCESS: CHRONIC ABSCESS: 1. Abscess of comparatively slow development with little evidence of inflammation. There may be an intermittent discharge of purulent matter. 2. Long-standing collection of
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ABSCESS: GINGIVAL ABSCESS: A localized purulent infection that involves the marginal gingiva or interdental papilla.
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ABSCESS: PERICORONAL ABSCESS: A localized purulent infection within the tissue surrounding the crown of a partially erupted tooth.
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ABSCESS: PERIODONTAL ABSCESS: Localized purulent collection in the periodontal tissues; also called lateral periodontal abscess.
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ABSCESS: PULPAL ABSCESS: Inflammation of the dental pulp characterized by the formation of purulent exudate.
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ABSCESS: RESIDUAL ABSCESS: Persistent abscess formed by the residues of a previous infection or foreign material.  
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ABSORPTION: 1. Passage of a substance into the interior of another substance. 2. Passage of fluids or substances through tissues. 3. Attenuation of radiation energy by the substance through which it passes.
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Glossary Tags : Histology and Cellular Biology
ABUTMENT: Tooth, root, or implant used to support and/or retain a fixed or removable prosthesis.   
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Glossary Tags : Prosthodontics
ACANTHOLYSIS: Dissolution of the intercellular attachments within the prickle cell layer (stratum spinosum) of stratified squamous epithelium. Classically seen in pemphigus vulgaris during vesicle and
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Glossary Tags : Histology and Cellular Biology
ACANTHOSIS: Hyperplasia of the prickle cell layer (stratum spinosum) of stratified squamous epithelium, resulting in thickened rete ridges or widening of this layer.
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ACCRETION: Accumulation on the teeth of foreign materials such as plaque, materia alba, and calculus.
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Glossary Tags : Miscellaneous
ACELLULAR: Substance that is devoid of cells.
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Glossary Tags : Embryology and Anatomy
ACELLULAR DERMAL MATRIX: An allogenic collagen material that has been treated to remove all cells to provide a matrix to support tissue regeneration and re-vascularization ultimately being transformed
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ACHE: Any dull, continuous or throbing pain. It is a subjective sensation, thought to be the psychological manifestation of c-fiber (slow, nonmyelinated) nociceptive impulses with origin outside the central
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ACQUIRED: Not congenital, but attained after birth. Examples include acquired immunodeficiency syndrome, acquired immunity and acquired reflexes.
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Glossary Tags : Immunology
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