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- $Unique_ID{BRK04284}
- $Pretitle{}
- $Title{Tricho-Dento-Osseous Syndrome}
- $Subject{Tricho-Dento-Osseous Syndrome Osteosclerosis Taurodontism-Curly
- Hair-Osteosclerosis TDOS }
- $Volume{}
- $Log{}
-
- Copyright (C) 1987, 1988, 1990 National Organization for Rare Disorders,
- Inc.
-
- 386:
- Tricho-Dento-Osseous Syndrome
-
- ** IMPORTANT **
- It is possible the main title of the article (Tricho-Dento-Osseous
- Syndrome) 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
-
- Osteosclerosis
- Taurodontism-Curly Hair-Osteosclerosis
- TDOS
-
- 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.
-
- Tricho-Dento-Osseous Syndrome (TDOS) is one of a group of disorders known
- as the Ectodermal Dysplasias. Intelligence and life span are usually normal
- for individuals with this disorder. The condition primarily affects the
- teeth, hair and bones. Children with TDOS may need to wear dentures due to
- absence of teeth.
-
- Symptoms
-
- X-ray examination of individuals with Tricho-Dento-Osseous Syndrome (TDOS)
- usually shows increased bone density. Babies with this disorder have curly
- eyelashes with thick and kinky hair that tends to straighten with age. Nails
- are thin and are likely to peel or break. The major symptom involves the
- teeth, which often become abscessed during the first years of life. Tooth
- enamel may become yellow brown, thin and pitted. Large pulp chambers
- (taurodontia) in teeth can be found with dental X-rays. Additionally, teeth
- may not grow at the appropriate times during infancy. Therefore, children
- affected by TDOS may lose their teeth and/or have delayed tooth growth.
-
- Causes
-
- Tricho-Dento-Osseous Syndrome (TDOS) is inherited as an autosomal dominant
- trait. A defect in ectodermal cells involving the formation and structure of
- teeth, hair and nails causes symptoms of this disorder.
-
- 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
-
- Tricho-Dento-Osseous Syndrome (TDOS) is a very rare disorder that is present
- at birth. It affects males and females in equal numbers. It can also occur
- in conjunction with other hereditary disorders.
-
- Related Disorders
-
- Tricho-Dento-Osseous Syndrome (TDOS) is one of the Ectodermal Dysplasias.
- These disorders are a group of hereditary, non-progressive syndromes in which
- the affected tissue is derived primarily from the ectodermal cell layer. The
- skin, its derivatives, and some other organs may be involved. A
- predisposition to respiratory infections is a serious problem often
- associated with this group of disorders. This is due to a somewhat depressed
- immune system and dysfunctioning mucous glands in parts of the respiratory
- tract. However, there is no marked involvement of the respiratory system in
- the Tricho-Dento-Osseous Syndrome form of Ectodermal Dysplasia.
-
- For more information, choose "Ectodermal Dysplasia" as your search term
- in the Rare Disease Database.
-
- Therapies: Standard
-
- Treatment of dental problems of Tricho-Dento-Osseous Syndrome (TDOS) usually
- involves early restoration of teeth with jacket crowns and/or prosthetic
- replacement (false teeth). Genetic counseling may be of benefit to families
- of patients with this disorder.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through
- February 1990. 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 Tricho-Dento-Osseous Syndrome (TDOS), please
- contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- National Foundation for Ectodermal Dysplasias
- 219 E. Main St.
- Mascoutah, IL 62258
- (618) 566-2020
-
- NIH/National Institute of Dental Research
- 9000 Rockville Pike
- Bethesda, MD 20892
- (301) 496-4261
-
- For more information on genetics 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
-
- A TRICHO-ODONTO-ONYCHIAL SUBTYPE OF ECTODERMAL DYSPLASIA: H. Kresbach, et
- al; Z Hautkr (May 1, 1984, issue 59(9)). Pp. 601-613.
-
- Tricho-Dento-Osseous Syndrome: HETEROGENEITY OR CLINICAL VARIABILITY:
- S.D. Shapiro, et al.; Am J Med Genet (October 1983, issue 16(2)). Pp. 225-
- 236.
-
- Tricho-Dento-Osseous Syndrome: A SCANNING ELECTRON MICROSCOPIC ANALYSIS:
- M. Melnick, et al.; Clin Genet (July 1977, issue 12(1)). Pp. 17-27.
-
-