Oral Frictional Hyperkeratosis Differential Diagnoses

  • Author: Catherine M Flaitz, DDS, MS; Chief Editor: William D James, MD   more...
 
Updated: Jan 31, 2012
 
 

Differential Diagnoses

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Contributor Information and Disclosures
Author

Catherine M Flaitz, DDS, MS  Professor of Oral and Maxillofacial Pathology and Pediatric Dentistry, Department of Diagnostic Sciences, University of Texas Health Sciences Center at Houston, Dental Branch

Catherine M Flaitz, DDS, MS is a member of the following medical societies: American Academy of Oral and Maxillofacial Pathology, American Academy of Oral Medicine, American Academy of Pediatric Dentistry, American Dental Association, International Association for Dental Research, and International Association of Oral Pathologists

Disclosure: Trimira, LLC Clinical contract for study Co-investigator on clinical grant; Trimira, LLC Honoraria Speaking and teaching; GC America Clinical contract for study Co-investigator on clinical grant

Coauthor(s)

Alfredo Aguirre, DDS, MS  Director of Advanced Oral and Maxillofacial Pathology Training Program, Professor, Department of Oral Diagnostic Sciences, State University of New York at Buffalo

Alfredo Aguirre, DDS, MS is a member of the following medical societies: American Academy of Oral and Maxillofacial Pathology

Disclosure: Nothing to disclose.

Jose Luis Tapia, DDS  Assistant Professor, Department of Oral Diagnostic Sciences, State University of New York at Buffalo

Jose Luis Tapia, DDS is a member of the following medical societies: American Academy of Oral and Maxillofacial Pathology

Disclosure: Nothing to disclose.

Specialty Editor Board

Daniel J Hogan, MD  Clinical Professor of Internal Medicine (Dermatology), Nova Southeastern University College of Osteopathic Medicine; Investigator, Hill Top Research, Florida Research Center

Daniel J Hogan, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American Contact Dermatitis Society, and Canadian Dermatology Association

Disclosure: Nothing to disclose.

Michael J Wells, MD  Associate Professor, Department of Dermatology, Texas Tech University Health Sciences Center, Paul L Foster School of Medicine

Michael J Wells, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American Medical Association, and Texas Medical Association

Disclosure: Nothing to disclose.

Drore Eisen, MD, DDS  Consulting Staff, Department of Dermatology, Dermatology Research Associates of Cincinnati

Drore Eisen, MD, DDS is a member of the following medical societies: American Academy of Dermatology, American Academy of Oral Medicine, and American Dental Association

Disclosure: Nothing to disclose.

Catherine M Quirk, MD  Clinical Assistant Professor, Department of Dermatology, University of Pennsylvania

Catherine M Quirk, MD is a member of the following medical societies: Alpha Omega Alpha and American Academy of Dermatology

Disclosure: Nothing to disclose.

Chief Editor

William D James, MD  Paul R Gross Professor of Dermatology, Vice-Chairman, Residency Program Director, Department of Dermatology, University of Pennsylvania School of Medicine

William D James, MD is a member of the following medical societies: American Academy of Dermatology and Society for Investigative Dermatology

Disclosure: Elsevier Royalty Other

Additional Contributors

The authors and editors of Medscape Reference gratefully acknowledge the contributions of previous author, Alan Drinnan, MB, ChB, FDS, DDS, to the development and writing of this article.

References

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The white line observed on the cheek is level with the biting plane of the teeth. The wear on the occlusal surfaces of the molar teeth suggests that the patient had a habit of bruxism. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
Prominent linea alba with evidence of cheek biting. The white line shows a slightly scalloped appearance, which correlates with the buccal surfaces of the teeth against which the mucosa is rubbed. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
This wider area of roughened mucosa is typical of those produced by the habit of cheek biting or nibbling. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
This frictional keratotic line shows a roughened surface. A thicker patch of mucosa is at the anterior end (under the tongue blade edge). This area is exactly level with the occlusal plane and was being chewed constantly by the patient. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
Anterior rough surface area at the occlusal plane of the teeth. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
Oral frictional hyperkeratosis of the lateral border of the tongue from chronic biting habit. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
Oral frictional hyperkeratosis of the attached maxillary gingiva from inappropriate toothbrushing technique. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
Oral frictional hyperkeratosis of the retromolar pad is also referred to as a ridge callus. This lesion is caused by masticatory irritation. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
Low-power view of stratified squamous epithelium with marked hyperkeratinization, acanthosis, and a prominent granular cell layer. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
High-power view of the surface keratin layer and a prominent granular cell layer. Courtesy of Catherine M. Flaitz, DDS and Alfredo Aguirre, DDS.
 
 
 
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