Diversity of clinical, radiographic and genealogical findings in 41 families with amelogenesis imperfecta
J. appl. oral sci
; 27: e20180359, 2019. tab, graf
Article
in English
| LILACS, BBO - Dentistry
| ID: biblio-990104
Responsible library:
BR1.1
ABSTRACT
Abstract Amelogenesis imperfecta (AI) is a group of enamel development disorders that alter the structure and chemical composition of the tissue. There is great variability in the clinical presentation; according to Witkop, AI can be categorized into 14 subtypes, which makes its diagnosis extremely complex. Objective:
This study aimed to describe and determine the frequency of clinical and radiographic features and inheritance patterns found in 41 Chilean families diagnosed with diverse types of AI. Material andMethods:
We analyzed the clinical records, photographs, pedigrees and radiographs of 121 individuals recruited between 2003 and 2016. All of the information was included in a database that was analyzed using the application Stata 14.Results:
The 72 affected individuals had average age of 16 years, and no sex association with the presence of AI was found. The most frequent clinical subtypes were as follows 43% hypomature, 25% hypoplastic, 21% hypomature/hypoplastic, 7% hypocalcified and 4% hypocalcified/hypoplastic. The number of severely affected teeth was 22, which occurred in the patients with hypocalcified and hypocalcified/hypoplasic AI who presented the highest number of damaged teeth. Caries and periodontal disease were found in 47 and 32% of the patients, respectively. Malocclusions were observed in 43% of the individuals with AI, with open bite being the most frequent. Radiographically, the thickness of the enamel decreased in 51% of the patients, and 80% showed decreased radiopacity of the enamel compared to that of dentin. Autosomal dominant inheritance pattern was found in 37% of the families with hypoplastic AI, and autosomal recessive pattern was present in 56% of the other clinical subtypes, but more frequently in those affected with hypomature and hypocalcified AI.Conclusion:
Of the five clinical subtypes, autosomal recessive hypomature, autosomal dominant hypoplastic and autosomal recessive hypomature/hypoplastic AI were the most prevalent subtypes in this group.
Full text:
Available
Collection:
International databases
Database:
BBO - Dentistry
/
LILACS
Main subject:
Inheritance Patterns
/
Amelogenesis Imperfecta
/
Genealogy and Heraldry
Type of study:
Diagnostic study
Limits:
Adolescent
/
Adult
/
Aged
/
Aged, 80 and over
/
Child
/
Child, preschool
/
Female
/
Humans
/
Male
Country/Region as subject:
South America
/
Chile
Language:
English
Journal:
J. appl. oral sci
Journal subject:
Dentistry
Year:
2019
Document type:
Article
Affiliation country:
Chile
Institution/Affiliation country:
Universidad de Chile/CL