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Research algorithm for the detection of genetic patterns and phenotypic variety of non-syndromic dental agenesis. | LitMetric

AI Article Synopsis

  • The study focuses on dental agenesis (DA), a condition involving the absence of teeth, aiming to explore its phenotypic variability, genetic transmission, and prevalence among a specific population group.
  • Conducted on 861 Caucasian patients from January 2018 to December 2019, the study utilized various examinations, including oral and radiological assessments, along with family genetic studies to evaluate inheritance patterns.
  • Findings indicated a 2.78% prevalence of DA, primarily affecting the upper arch and showing a strong incidence of bilateral cases; the research also identified 37.50% of instances as hereditary with autosomal dominant inheritance.

Article Abstract

Introduction: Dental agenesis (DA), brings together the anodontia, oligodontia, hypodontia, characterized by a deficit in the development of a variable number of teeth. The objectives of the study were to illustrate the phenotypic variability of non-syndromic DA, to identify cases of DA with hereditary genetic transmission, and establish the mode of DA genetic pattern in these cases, together with the determination of DA prevalence in the population group study.

Patients, Materials And Methods: The cross-sectional observational study was performed on a mixed population group, consisting of 861 Caucasian patients, between January 2018-December 2019. The clinical evaluation protocol of patients with DA, used to illustrate their phenotype, included the following stages: oral examination, photographic examination, and radiological examination. The evaluation protocol specific to the family genetic study of patients with DA, involved the following three stages: family survey, construction of the family tree and analysis of the pedigree structure.

Results: The prevalence of DA in the population group was 2.78%. Regarding the phenotype, DA mainly affected the upper arch (50% of cases); bilateral DA had a significantly increased incidence (83.33% of cases) compared to unilateral form; in most cases (75%), a patient lacked one to two teeth, the lack of two teeth being the most common form (83.33% of cases); the upper lateral incisors were the teeth most frequently involved in DA (31.11% of the total missing teeth). Regarding the family genetic study, hereditary DA with autosomal dominant inheritance was present in 37.50% of cases. In the other cases (62.50%), isolated, sporadic forms of DA were registered, suggesting a spontaneous de novo mutation or a disorder of odontogenesis of a non-genetic nature.

Conclusions: We consider that this study is of interest for current scientific research with applicability in dental medicine, by bringing actual information on the prevalence of non-syndromic DA in South-East Romania, the variety of phenotypic spectrum of DA for this geographic area, and the role of heredity in the DA genetic determinism in the studied population.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8597362PMC
http://dx.doi.org/10.47162/RJME.62.1.05DOI Listing

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