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- $Unique_ID{BRK03654}
- $Pretitle{}
- $Title{Dentinogenesis Imperfecta, Type III}
- $Subject{Dentinogenesis Imperfecta, Type III Brandywine Type Dentinogenesis
- Imperfecta Dentinogenesis Imperfecta, Shields Type III Dentin Dysplasia,
- Coronal Dentin Dysplasia, Radicular Dentinogenesis Imperfecta, Type I
- (Hereditary Opalescent Dentin; Dentinogenesis Imperfecta, Type II; Capdepont
- Teeth; Hereditary Brown Teeth)}
- $Volume{}
- $Log{}
-
- Copyright (C) 1988, 1989 National Organization for Rare Disorders, Inc.
-
- 551:
- Dentinogenesis Imperfecta, Type III
-
- ** IMPORTANT **
- It is possible the main title of this article (CHARGE Association) is not
- the name you expected. Please check the SYNONYMS listing on the next page to
- find alternate names and disorder subdivisions covered by this article.
-
- Synonyms
-
- Brandywine Type Dentinogenesis Imperfecta
- Dentinogenesis Imperfecta, Shields Type III
-
- Information on the following disorders may be found in the Related
- Disorders section of this report:
-
- Dentin Dysplasia, Coronal
- Dentin Dysplasia, Radicular
- Dentinogenesis Imperfecta, Type I (Hereditary Opalescent Dentin;
- Dentinogenesis Imperfecta, Type II; Capdepont Teeth; Hereditary Brown
- Teeth)
-
- General Discussion
-
- ** REMINDER **
- The information contained in the Rare Disease Database is provided for
- educational purposes only. It should not be used for diagnostic or treatment
- purposes. If you wish to obtain more information about this disorder, please
- contact your personal physician and/or the agencies listed in the "Resources"
- section of this report.
-
- Dentinogenesis Imperfecta, Type III is a genetic dental disorder
- characterized by rapid erosion of crowns of the baby and permanent teeth soon
- after they erupt. The inside of the teeth (dental pulp) which is filled with
- blood vessels and nerve endings is usually exposed. Other genetic traits may
- accompany these tooth abnormalities.
-
- Symptoms
-
- Dentinogenesis Imperfecta, Type III is characterized by rapid erosion of the
- crowns in baby and permanent teeth. Dental pulp inside several teeth may be
- exposed. This pulp may be opalescent, smooth, and amber colored. Pulp
- chambers and root canals may appear very large on X-ray photos of baby teeth.
- Permanent teeth may have a reduction or even complete loss of the pulp
- chambers and root canals. Carriers of the gene for this disorder may have
- teeth that appear normal. However, upon examination their teeth have only an
- extremely thin ivory layer and an enlarged pulp chamber (shell teeth).
- Pitting of the tooth enamel may occur in the permanent teeth of patients.
-
- Causes
-
- Dentinogenesis Imperfecta, Type III is a disorder inherited through an
- autosomal dominant gene; this gene is thought to be Gc on the chromosome 4q.
- (Human traits including the classic genetic diseases, are the product of the
- interaction of two genes for that condition, one received from the father and
- one from the mother. In dominant disorders, a single copy of the disease
- gene (received from either the mother or father) will be expressed
- "dominating" the normal gene and resulting in appearance of the disease. The
- risk of transmitting the disorder from affected parent to offspring is 50%
- for each pregnancy regardless of the sex of the resulting child.)
-
- Affected Population
-
- Patients with Dentinogenesis Imperfecta, Type III are affected in a ratio of
- approximately 55 males to 45 females. Symptoms begin as soon as baby teeth
- erupt. It tends to run in families. The disorder was first found to occur
- in people who lived in Brandywine, MD, but it can also affect persons of
- Ashkenazi Jewish heritage.
-
- Related Disorders
-
- Symptoms of the following disorders can be similar to those of Dentinogenesis
- Imperfecta, Type III. Comparisons may be useful for a differential
- diagnosis:
-
- Radicular Dentin Dysplasia is a genetic disorder characterized by
- abnormal formation of tooth ivory (dentin). The teeth lack pulp chambers, or
- have half-moon shaped pulp chambers in short or abnormally shaped roots. The
- color of the teeth is usually normal. (For more information, choose "Dentin
- Dysplasia" as your search term in the Rare Disease Database.)
-
- Coronal Dentin Dysplasia is a genetic disorder characterized by brownish-
- blue opalescent baby teeth and permanent teeth that appear normal. The baby
- teeth in children affected by this disorder contain obliterated pulp chambers
- and reduced root canals. Permanent teeth also have abnormalities. (For more
- information, choose "Dentin Dysplasia" as your search term in the Rare
- Disease Database.)
-
- Osteogenesis Imperfecta, or Brittle Bone Disease, is a group of
- hereditary connective tissue disorders characterized by unusual bone
- fragility and tendency to fracture. Dentinogenesis Imperfecta is one of the
- features of Osteogenesis Imperfecta. (For more information, choose
- "Osteogenesis Imperfecta" as your search term in the Rare Disease Database.)
-
- Dentinogenesis Imperfecta Type I (DGI 1; Opalescent Dentin; Opalescent
- Teeth without Osteogenesis Imperfecta; Dentinogenesis Imperfecta, Shields
- Type II; Capdepont Teeth; Hereditary Brown Teeth) is an inherited disorder
- characterized by blue-gray or amber brown, opalescent teeth, without
- brittleness of the bones. Dental X-rays indicate the teeth have bulbous
- crowns, roots are narrower than normal, and pulp chambers and root canals are
- smaller than normal or completely absent. The tooth enamel splits readily
- from the ivory when the upper teeth close forcefully against the lower teeth,
- as in chewing or biting.
-
- Therapies: Standard
-
- Treatment for children with Dentinogenesis Imperfecta, Type III consists of
- placement of a full set of dental crowns over the teeth. In adults, all
- teeth may be extracted carefully by elevation and replaced with a full set of
- dentures. It is recommended that treatment is started early to improve the
- facial appearance of young patients.
-
- Genetic counseling is recommended for families of children with
- Dentinogenesis Imperfecta.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through
- November 1988. Since NORD's resources are limited, it is not possible to
- keep every entry in the Rare Disease Database completely current and
- accurate. Please check with the agencies listed in the Resources section for
- the most current information about this disorder.
-
- Resources
-
- For more information on Dentinogenesis Imperfecta, Type III, please contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- National Foundation for Ectodermal Dysplasia
- P.O. Box 114
- Mascoutah, IL 62258
- (618) 556-2020
-
- NIH/National Institute of Dental Research
- 9000 Rockville Pike
- Bethesda, MD 20892
- (301) 496-4261
-
- For genetic information and genetic counseling referrals, please contact:
-
- March of Dimes Birth Defects Foundation
- 1275 Mamaroneck Avenue
- White Plains, NY 10605
- (914) 428-7100
-
- Alliance of Genetic Support Groups
- 35 Wisconsin Circle, Suite 440
- Chevy Chase, MD 20815
- (800) 336-GENE
- (301) 652-5553
-
- References
-
- This report in the Rare Disease Database is based on outlines prepared by
- medical and dental students (1984-1986) at the Medical College of Virginia
- for their course in human genetics.
-
- MENDELIAN INHERITANCE IN MAN, 7th ed.: Victor A. McKusick; Johns Hopkins
- University Press, 1986. P. 193.
-
- A NEW CLASSIFICATION OF HERITABLE HUMAN ENAMEL DEFECTS AND A DISCUSSION
- OF DENTIN DEFECTS: E.D. Shields; Birth Defects (1983: issue 19(1)). Pp.
- 107-127.
-
- DENTINOGENESIS IMPERFECTA IN THE BRANDYWINE ISOLATE (DI TYPE III):
- CLINICAL, RADIOLOGIC, AND SCANNING ELECTRON MICROSCOPIC STUDIES OF THE
- DENTITION: L.S. Levin, et al.; Oral Surg (September 1983: issue 56(3)). Pp.
- 267-274.
-
- AN AUTOSOMAL-DOMINANT FORM OF JUVENILE PERIODONTITIS: ITS LOCALIZATION TO
- CHROMOSOME 4 AND LINKAGE TO DENTINOGENESIS IMPERFECTA AND Gc Journal Craniofac
- Genet Dev Biol GENESIS (1986: issue 6(4)). Pp. 341-350.
-
- AN UNUSUAL PRESENTATION OF OPALESCENT DENTIN AND BRANDYWINE ISOLATE
- HEREDITARY OPALESCENT DENTIN IN AN ASHKENAZIC JEWISH FAMILY: A. Heimler, et
- al.; Oral Surg al.; Oral Surg Oral Med Oral Pathol (June 1985: issue 59(6)).
- Pp. 608-615.
-
-