Purpose: The human mandible is subject to stimuli during its growth phase and also in adulthood. One of these stimuli may be absence of teeth, which gives rise to mandibular remodeling. Morphological changes may occur in different areas of this bone, such as in the gonial, condylar and ramus regions.
Objective: To investigate the influence of edentulousness on remodeling of the gonial angle of the mandible and the angle formed by the mandibular incisure.
Materials And Method: Eighty-five dry mandibles from adults were examined: 42 from males and 43 from females. The mandibles were photographed using a camera coupled to a static support that was positioned 20 cm from the object to be photographed. The images were digitized and transferred to the Image J 1.42q software, in which the gonial angle of the mandible and the mandibular incisure angle were measured.
Results: There were no differences in the mandibular and mandibular incisure angles in relation to presence or absence of teeth, or between the right and left sides. The mandibular incisure angle was greater in the women.
Conclusion: Edentulousness did not cause remodeling of the gonial angle of the mandible or in the mandibular incisure angle.
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http://dx.doi.org/10.1007/s00276-014-1335-1 | DOI Listing |
Vet Res Commun
October 2024
Institute of Animal Health and Production (ISPA), Federal Rural University of Amazonia (UFRA), Belém, 66077-530, PA, Brazil.
Due to events related to the urbanization process, specimens of Saimiri collinsi are often referred to veterinarians specializing in the treatment of wild animals. With these professionals and the oral health of this species in mind, we evaluated the skull and the exact location of the infraorbital, mentual and mandibular foramens, with the aim of supporting the anesthetic block for dental procedures in Saimiri collinsi. The infraorbital foramen was located in the maxillary bone and was arranged with one on each side, except in one individual, with a pair in each antimer.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
May 2019
Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, 100044 Beijing, China;
Middle to Late Pleistocene human evolution in East Asia has remained controversial regarding the extent of morphological continuity through archaic humans and to modern humans. Newly found ∼300,000-y-old human remains from Hualongdong (HLD), China, including a largely complete skull (HLD 6), share East Asian Middle Pleistocene (MPl) human traits of a low vault with a frontal keel (but no parietal sagittal keel or angular torus), a low and wide nasal aperture, a pronounced supraorbital torus (especially medially), a nonlevel nasal floor, and small or absent third molars. It lacks a malar incisure but has a large superior medial pterygoid tubercle.
View Article and Find Full Text PDFObjectives: To see the correlation between changes in incisure depth of mandible on an orthopantomogram with bone mineral density and whether or not it can be employed for screening and early detection of osteoporosis.
Method: The analytical cross-sectional study was conducted at the Institute of Basic Medical Sciences, Dow University of Health Sciences, Karachi, from December 2011 to July 2012. It comprised 174 female subjects between 25 and 85 years of age who were divided into premenopausal (Group I) and postmenopausal (Group II) groups.
Purpose: The human mandible is subject to stimuli during its growth phase and also in adulthood. One of these stimuli may be absence of teeth, which gives rise to mandibular remodeling. Morphological changes may occur in different areas of this bone, such as in the gonial, condylar and ramus regions.
View Article and Find Full Text PDFJ Craniofac Surg
July 2011
Oral and Maxillo-facial Surgery Department, Lapeyronie Hospital, University Hospital of Montpellier, Montpellier, France.
Background: Condylar fracture osteosynthesis is today commonly practiced, but only a few studies deal with complications due to plates or screws loosening.
Methods: We made a retrospective analysis of 53 operated condylar fractures treated with different fixation devices from July 2002 to July 2007. We looked for complications and its relationship with the osteosynthesis device used.
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