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- $Unique_ID{BRK03653}
- $Pretitle{}
- $Title{Dentin Dysplasia, Radicular}
- $Subject{Dentin Dysplasia, Radicular Dentin Dysplasia, Type I Nonopalescent
- Opalescent Dentine Radicular Dentin Dysplasia Rootless Teeth Coronal Dentin
- Dysplasia (Dentin Dysplasia, Type II; Pulpal Dysplasia) Dentinogenesis
- Imperfecta}
- $Volume{}
- $Log{}
-
- Copyright (C) 1988, 1989 National Organization for Rare Disorders, Inc.
-
- 521:
- Dentin Dysplasia, Radicular
-
- ** IMPORTANT **
- It is possible the main title of the article (Radicular Dentin Dysplasia)
- 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
-
- Dentin Dysplasia, Type I
- Nonopalescent Opalescent Dentine
- Radicular Dentin Dysplasia
- Rootless Teeth
-
- Information on the following diseases can be found in the Related
- Disorders section of this report:
-
- Coronal Dentin Dysplasia (Dentin Dysplasia, Type II; Pulpal Dysplasia)
- Dentinogenesis Imperfecta
-
- 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.
-
- Radicular Dentin Dysplasia is a genetic disorder characterized by
- atypical formation of the calcified tissue between the enamel pulp of the
- teeth (dentin). The teeth lack pulp chambers or have half-moon shaped pulp
- chambers in short or abnormal shaped roots. The color of the teeth is
- usually normal.
-
- Symptoms
-
- Radicular Dentin Dysplasia is characterized by teeth with a bluish-brown
- shine. However, in some cases the teeth may appear to have normal enamel.
- X-ray photos indicate the tooth pulp chambers in the roots are half-moon
- shaped or obliterated, and the roots are very short. Areas around these
- short roots sometimes appear dark (radiolucent) on X-rays.
-
- Both the baby teeth and the permanent teeth are affected. The teeth are
- often poorly aligned and can be chipped easily. Without treatment, persons
- with Radicular Dentin Dysplasia may lose their teeth by age 30-40.
-
- Causes
-
- Radicular Dentin Dysplasia is inherited as an autosomal dominant disorder,
- possibly caused by degenerated blood vessels in the dental papilla. (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
-
- Radicular Dentin Dysplasia affects about 1 in 100,000 persons. Males and
- females are affected in equal numbers.
-
- Related Disorders
-
- Symptoms of the following disorders can be similar to Radicular Dentin
- Dysplasia. Comparisons may be useful for a differential diagnosis:
-
- Coronal Dentin Dysplasia (Dentin Dysplasia, Type II; Pulpal Dysplasia)
- is an autosomal dominant hereditary disorder. It is characterized by
- brownish-blue shiny baby teeth with reduced root canals and normal appearing
- permanent teeth. (For more information on this disorder, choose "Coronal
- Dentin Dysplasia" as your search term in the Rare Disease Database).
-
- Dentinogenesis Imperfecta is an autosomal dominant hereditary disorder.
- It is characterized by bluish-brown or brown opalescent baby and permanent
- teeth. The tooth enamel breaks and wears off easily. In affected adults,
- only roots may remain. X-rays usually show the absence of dental pulp
- chambers and root canals. (For more information on thia disorder, choose
- "Dentinogenesis Imperfecta" as your search term in the Rare Disease
- Database.)
-
- Therapies: Standard
-
- The affected teeth in persons with Radicular Dentin Dysplasia can be treated
- by a specialist who treats the roots and pulp of the teeth (endodontist).
- Filling the tips of the root canals can allow these abnormal teeth to remain
- in their natural position. Sometimes the affected teeth must be extracted
- and replaced with dentures.
-
- Genetic counseling is recommended for families of children with Radicular
- Dentin Dysplasia.
-
- 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 Radicular Dentin Dysplasia, 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
-
- 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 is based on outlines prepared by medical and dental students
- (1984-1986) at the Medical College of Virginia for their course in human
- genetics.
-
- DENTIN DYSPLASIA TYPE I: A CLINICAL REPORT: J.A. Petrone, et al.;
- Journal Am Dent Assoc (December 1981: issue 103(6)). Pp. 891-893.
-
- DENTIN DYSPLASIA TYPE I: A SCANNING ELECTRON MICROSCOPIC ANALYSIS OF THE
- PRIMARY DENTITION: M. Melnick, et al.; Oral Surg (October 1980: issue
- 50(4)). Pp. 335-340.
-
-