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| http://dx.doi.org/10.7860/JCDR/2015/16016.6752 | DOI Listing |
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The Grotte du Bison Neandertals (Arcy-sur-Cure, France).
J Hum Evol
December 2024
Univ. Paris 1 Panthéon-Sorbonne, Univ. Paris Ouest Nanterre La Défense, MSH Mondes-CNRS-Ministère de la Culture, ArScAn, UMR 7041, 92000, Nanterre, France.
The Grotte du Bison, in Arcy-sur-Cure (Yonne, France), yielded a large assemblage of 49 Neandertal remains from late Mousterian layers, offering critical insights for the study of Middle to Upper Paleolithic populations of Western Europe. Previous studies described the external morphology of 13 isolated teeth and a partial maxilla. Building on this previous work, the current study provides further descriptions and analyses of the remains, including one postcranial fragment, six cranial fragments, two maxillary fragments, and 40 isolated teeth.
View Article and Find Full Text PDFThe role of sonic hedgehog signaling in the oropharyngeal epithelium during jaw development.
Congenit Anom (Kyoto)
December 2024
Department of Molecular Craniofacial Embryology and Oral Histology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.
Sonic hedgehog (Shh) is expressed in the oropharyngeal epithelium, including the frontonasal ectodermal zone (FEZ), which is defined as the boundary between Shh and Fgf8 expression domains in the frontonasal epithelium. To investigate the role of SHH signaling from the oropharyngeal epithelium, we generated mice in which Shh expression is specifically deleted in the oropharyngeal epithelium (Isl1-Cre; Shh). In the mutant mouse, Shh expression was excised in the oropharyngeal epithelium as well as FEZ and ventral forebrain, consistent with the expression pattern of Isl1.
View Article and Find Full Text PDFA Rare Case of Cementoblastoma of the Second Right Maxillary Premolar in a 30-Year-Old Man.
Cureus
November 2024
Department of Pediatric Dentistry, Medical University "Prof. Dr. Paraskev Stoyanov", Varna, BGR.
Cementoblastoma is a benign odontogenic mesenchymal tumor characterized by cementum production. Cementoblastoma is considered a relatively rare neoplasm with a predilection to the posterior region of the mandible. The main clinical differential diagnoses include hypercementosis, cemento-osseous dysplasia, condensing osteitis, idiopathic osteosclerosis, osteoblastoma, odontoma, and osteosarcoma.
View Article and Find Full Text PDFEvaluation of the presence of the premaxillary-maxillary suture in growing patients: A retrospective CBCT study.
Int Orthod
December 2024
Department of Orthodontics, Faculty of Dentistry, Pontificia Universidad Católica de Chile, Santiago, Chile.
Background: The premaxillary-maxillary suture (PMS) is related to midface development, but its exact closure period remains undefined. Some authors consider the premaxilla as an independent bone with potential for orthopaedic stimulation, while others see it as a phylogenetic vestige.
Objective: To determine the prevalence of the premaxillary-maxillary suture (PMS) in cone beam computed tomography (CBCT) images of patients aged 6 to 16years, according to age and sex, treated at the Dental Clinic of the Pontificia Universidad Católica de Chile's Oral Imaging Service between 2015 and 2023.
Nonsurgical endodontic retreatment of C-shaped maxillary molars: case reports and review of literature.
BMC Oral Health
November 2024
Stomatological Hospital of Xiamen Medical College, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, China.
The root canal systems of maxillary first molar (MFM) and maxillary second molar (MSM) variations represent a clinical challenge for endodontists, especially the prevalence of fused C-shaped roots. Having a thorough knowledge of root canal configuration is an extremely important point for a successful root canal treatment to avoid missing extra canals. The aim of this article was to present 2 cases of maxillary molar with an unusual C-shaped configuration diagnosed during root canal retreatment/treatment and conduct a literature review of the MFM and MSM anatomy.
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