Supernumerary teeth are common in general population and occur frequently in patients with familial trait. However, it is rare to find supernumeraries in individuals with no associated disease or syndrome. Supernumerary teeth are found in any region of maxilla and mandible, with a predisposition for anterior maxilla. A case of endodontically involved supernumerary lateral incisor is described.
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http://dx.doi.org/10.5005/jp-journals-10024-1285 | DOI Listing |
Elife
January 2025
Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom.
The lateral line system enables fishes and aquatic-stage amphibians to detect local water movement via mechanosensory hair cells in neuromasts, and many species to detect weak electric fields via electroreceptors (modified hair cells) in ampullary organs. Both neuromasts and ampullary organs develop from lateral line placodes, but the molecular mechanisms underpinning ampullary organ formation are understudied relative to neuromasts. This is because the ancestral lineages of zebrafish (teleosts) and (frogs) independently lost electroreception.
View Article and Find Full Text PDFDiagnostics (Basel)
November 2024
Endocrinology Department, Elias Emergency University Hospital, 011461 Bucharest, Romania.
: Persistent Müllerian duct syndrome (PMDS) is a rare disorder of sex development (DSD) caused by mutations in the genes coding anti-Müllerian hormone (AMH) or the AMH receptor, characterized by the persistence of Müllerian derivatives, the uterus and/or fallopian tubes, in otherwise normally virilized boys. Testicular regression syndrome is common in PMDS, yet the association with supernumerary testis has been reported in only two patients where genetic testing was not performed. : Thus, we report an individual with this particular association caused by a previously unreported homozygous variant in the gene to enable future genotype-phenotype correlations in this rare disorder.
View Article and Find Full Text PDFBMC Oral Health
November 2024
Department of Stomatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China.
Cureus
October 2024
Department of Orthodontics and Dentofacial Orthopedics, School of Dental Sciences, Krishna Vishwa Vidyapeeth, Karad, IND.
Amongst the spectrum of dental developmental anomalies, hypodontia is a condition characterized by congenitally missing teeth. Whereas, hyperdontia is a condition that results in the development of an excessive number of teeth. These two conditions are regarded as polar opposites in the progression of dentition development.
View Article and Find Full Text PDFSurg Radiol Anat
December 2024
Department of Orthopedics and Rehabilitation, Jagiellonian University Medical College, Balzera 15, Zakopane, 34- 500, Poland.
Background: Lumbar ribs (LR) are a rare and relatively unknown anatomical abnormality of the lumbar spine. The literature provides better understanding regarding other spinal congenital variations like cervical ribs or lumbosacral transitional vertebrae, which are rather commonly recognised conditions. Thus, this meta-analysis aimed to provide data on prevalence and key characteristics of LR.
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