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Age and Sex-Related Geometrical Variation of Ramus mandibulae of Sus scrofa's (Mammalia: Artiodactyla) Jaws International Journal of Morphology
Hohl,Leandro dos S. L; Sicuro,Fernando L; Azorit,Concepción; Carrasco,Rafael; Rocha-Barbosa,Oscar.
Morphological variation of the ramus mandibulae of wild Sus scrofa was described and correlated to sex and age differences. Young forms (n=27, 15 males, 12 females) and adults (n=23, 13 males, 10 females) were analyzed through Geometric Morphometrics (2-D) to assess differences between groups. We found significant differences between age- and sex-related shape variations at ramus mandibulae level. Young wild boars present bulky angular process with backward oriented coronoid process, while adults show slender jaw vertical ramus, and orthogonally oriented coronoid process. The ramus mandibulae in female wild boars is more robust and bulky than in males. The morphological changes between young and adult forms are related to alterations in the osteo-muscular...
Tipo: Journal article Palavras-chave: Mandible; Ontogeny; Sexual Dimorphism; Wild boar.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400026
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Analysis of the Lingula Shapes in Macerated Mandibles of Brazilian Individuals International Journal of Morphology
Alves,Nilton; Deana,Naira Figueiredo.
The lingula of the mandible is a bone projection that limits medially the mandibular foramen, which is the region where the inferior alveolar neurovascular bundle penetrates. The lingula is an important anatomical landmark used in maxillofacial surgeries and to block the inferior alveolar nerve. The aim of this study was to analyze the different types of lingula found in mandibles of Brazilian individuals, considering aspects such as gender and race. One hundred thirty-two macerated mandibles of Brazilian adult individuals of both sexes, black and white skin colors, were used. The lingula was classified into four types: triangular, truncated, nodular and assimilated. The data were analyzed using Chi-square test and Fisher's exact test. The truncated shape...
Tipo: Journal article Palavras-chave: Anatomy; Lingula; Mandible; Inferior alveolar nerve.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100007
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Blind Test of Mandibular Morphology with Sex Indicator in Subadult Mandibles International Journal of Morphology
Suazo Galdames,Iván Claudio; Zavando Matamala,Daniela Alejandra; Smith,Ricardo Luiz.
Loth & Henneberg (2001) indicated that it was possible determine the sex with a high degree of accuracy (81 %) in mandibles of children by observing the shape of the mandibular body. The purpose of this study was to evalúate in mandibles of Brazilians subadults the proposed method consistency; were used mandibles of 33 Brazilian children between 0 and 1 year of age, known sex, belonging to the coUection of skulls of the Federal University Sao Paulo (UNIFESP). We performed a blind test in two sessions by one observer based on the parameters descnbed by Loth & Henneberg. The results show between 57.5 and 60.5% of accuracy, being the most sensitive test for determining male (70%) than for females (38-46%). The results presented are lower than...
Tipo: Journal article Palavras-chave: Sexual dimorphism; Determination of sex; Subadults; Mandible.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000400011
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Clinical Anatomy of the Head Region of the Black Bengal Goat in Bangladesh International Journal of Morphology
Uddin,Mohammad Mejbah; Ahmed,Syed Sayeem Uddin; Islam,Kh. Nurul; Islam,Md. Mominul.
The study involved the measurements of some clinically important landmarks for regional anesthesia in the maxillary and mandibular regions of head of fifty Black Bengal (BB) goats. The distance from facial tuberosity to the infra-orbital canal and from the latter to the root of the alveolar tooth directly ventral to it were 1.85 cm and 1.75 cm respectively. Both the distances from facial tuberosity to infra-orbital canal and from infra-orbital canal to the root of the alveolar tooth are of clinical important even in live animal as a guide for tracking infra-orbital nerve because of facial tuberosity. The distance between the lateral end of the alveolus of the incisor tooth to the mental foramen was 2.11 cm and are from the mental foramen to the caudal...
Tipo: Journal article Palavras-chave: Mandible; Maxilla; Regional Anesthesia; Goat.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400048
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Comparative Bilateral Bone Density of the Mandible Angle International Journal of Morphology
Issa,Joáo Paulo Mardegan; Tiossi,Rodrigo; Catirse,Alma Blásida Concepción Elizaur Benitez; Monteiro,Solange Aparecida Caldeira; Watanabe,Plauto Christhopher Aranha.
The aim of this study was to assess a bilateral comparison of the mandible density in both sex young patients with computer densitometry. Fifty panoramic radiographs were obtained from young patients with ages between 18 and 23 years old (group A = 25 female and group B = 25 male) standardized, using the same X-Ray equipment (Siemens, lOKvp, 7mA), scanned with a 282.110 pixels resolution, and transferred later to a computer and using the SIDEXIS (Sirona, USA) program to analyze the bone densitometry performance. Bilateral sites were standardized with the objective to measure the bone density. Obtained data were registered and submitted to statistical analysis. The following means and standard deviations were obtained, in pixels, for the right and the left...
Tipo: Journal article Palavras-chave: Bone density; Mandible; Panoramic; X-ray; Radiography.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000200016
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Computer Graphics Applied to Anatomy: A Study of two Bio-CAD Modeling Methods on Finite Element Analysis of Human Edentulous Hemi-Mandible International Journal of Morphology
Rossi,Ana Cláudia; Freire,Alexandre Rodrigues; Botacin,Paulo Roberto; Caria,Paulo HenriqueFerreira; Prado,Felippe Bevilacqua.
Modeling is a step to perform a finite element analysis. Different methods of model construction are reported in literature, as the Bio-CAD modeling. The purpose of this study was to perform a model evaluation and application using two methods of Bio-CAD modeling from human edentulous hemi-mandible on the finite element analysis. From CT scans of dried human skull was reconstructed a stereolithographic model. Two methods of modeling were performed: STL conversion approach (Model 1) associated to STL simplification and reverse engineering approach (Model 2). For finite element analysis was used the action of lateral pterygoid muscle as loading condition to assess total displacement (D), equivalent von-Mises stress (VM) and maximum principal stress (MP). Two...
Tipo: Journal article Palavras-chave: Computational modeling; Mandible; Finite element analysis; Biomechanics.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000300011
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Evaluation of Dental Eruption of Third Molars in the Length of Mandible International Journal of Morphology
Sousa Filho,Gilberto de; Amorim Júnior,Adelmar Afonso de; Lins,Carla Cabral dos Santos Accioly; Silva Neto,Joaquim Celestino da.
The aim of this work was to evaluate the eruption of the third molar teeth in the length of the mandible using the orthodontic documentation obtained between 2005 and 2006 as sampling method, a total of 193 cases of both sexes. The cephalometric analysis and panoramic radiographic studies were chosen from two clinics randomly selected in the city of Recife ­ Pernambuco - Brazil. It was analyzed the linear size of mandibular bone by the use of McNamara's Cephalometric Analysis, and also the presence or not of dental retention of inferior third molar teeth with the help of panoramic radiographic study, evaluating the commitment of these retentions with the effective length of mandible. The work concluded that when the effective mandibular length is small...
Tipo: Journal article Palavras-chave: Third molar; Mandible; Tooth eruption; Panoramic radiographic study.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400055
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Facial trauma in a dog: advantages of the use of computed tomography on diagnostic of caudal fractures of mandible Ciência Rural
Carvalho,Vanessa Graciela Gomes; Pinto,Ana Carolina Fonseca; Gioso,Marco Antônio; Correa,Herbert Lima; Cavalcanti,Marcelo Gusmão Paraíso.
A multiple mandible fracture was diagnosed in a mixed breed dog. After clinical examination, extra-oral radiographs were used to evaluate the trauma but, a complete visualization of the fractures extension was difficult due to the great of structures of cranium. Then, the computed tomography was accomplished to help and to find all osseous tissues fractured, their exact location, existent fragments and their positions; being superior to the radiograph exam in the accurate diagnosis realized.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Computed tomography; Facial; Trauma; Dog; Mandible; Fracture.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782006000600046
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Gross and Morphometrical Studies on Mandible of Blackbuck (Antelope cervicapra) International Journal of Morphology
Choudhary,Om Prakash; Singh,Ishwer; Bharti,Sanjay Kumar; Mohd,Khan Idrees; Sathapathy,Srinivas; Mrigesh,Meena.
The present study has been done on the mandible of blackbuck. The mandible was a paired bone. It was the largest bone of the skull, and it was made up of two halves, which were united with immovable articulation forming mandibular symphysis. It presented for description three surfaces and three borders. The lingual sur-face was smooth and concave. Its symphyseal surface was rough and irregular. The most prominent part of the curve of the ramus formed the angle of the jaw; the part of the ramus between the body and the angle was called horizontal part and carries the lower cheek teeth. The part of the ramus above the angle was termed the vertical part. The vertical part of ramus was non-tooth bearing, expanded vertical part of mandible. Each ramus presented...
Tipo: Journal article Palavras-chave: Blackbuck; Mandible; Ramus; Teeth.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200003
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Incidence of Retromolar Foramen in Human Mandibles: Ethnic and Clinical Aspects International Journal of Morphology
Rossi,Ana Cláudia; Freire,Alexandre Rodrigues; Prado,Guilherme Bevilacqua; Prado,Felippe Bevilacqua; Botacin,Paulo Roberto; Caria,Paulo Henrique Ferreira.
The retromolar foramen allows the passage of the neurovascular bundles that contribute to nutrition and innervation of the pulp and periodontium of the lower teeth. Knowledge of this anatomical variation may prevent complications in the anesthesia and surgical procedures in this area and serve as an anatomical landmark for ethnic identification. The aim of this study was to evaluate the impact of the retromolar foramen in human mandibles of adult Brazilians and discuss the clinical and ethnic related to the presence of this foramen. Were evaluated 222 human mandibles, dry, adults, Brazilians, independent of gender. The evaluation was performed by two examiners who standardized search from a previous anatomical study. The mandibles were analyzed: the...
Tipo: Journal article Palavras-chave: Foramen; Retromolar; Anesthesia; Mandible.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000300051
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Mandible Measurements and Dental Midline Deviation after Alveolar Nerve Transection in Growing Rabbits International Journal of Morphology
Valdivia Gandur,Iván; Tallón Walton,Victoria; Carvalho Lobato,Patricia; Lozano de Luaces,Vicente; Manzanares Céspedes,María Cristina.
The relationship between sensitive innervation and normal mandibular bone development has been described in the literature. Therefore, neural damage is a potential cause of osseous deformities, particularly in growing subjects. The aim of this project is to present the mandible measurements obtained after the transection of the inferior alveolar nerve of growing rabbits. A specific surgical protocol was designed to carry out the unilateral nerve transection by avoiding musculoskeletal injuries. Twenty New Zealand White rabbits one week post-weaning were used, 12 as an experimental group and 8 as a control group (Sham operated). The animals were sacrificed 90 days postoperatory, and the mandibles carefully dissected. Dental midline deviation data were...
Tipo: Journal article Palavras-chave: Mandible; Growth; Development; Anatomy; Dissection; Stomatognathic system.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100008
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Maternal Food Restriction During Lactation Reduces Mandible Growth of the Female Offspring in Adulthood: Experimental and Morphometric Analysis International Journal of Morphology
Degani Junior,Hugo V. M; Nunes,Viviane A; Bezerra,Ewerton C; Ramos,Cristiane F; Rodrigues,Mauro R; Abidu-Figueiredo,Marcelo; Cardoso,Gilberto P; Babinski,Marcio A.
The aim of this study was to evaluate the effects of maternal protein and energy restriction during lactation on mandible dimensions of pups (female) at aging. At parturition, Wistar rat dams were randomly assigned to the following groups: 1) control group (C) - free access to a standard laboratory diet containing 23% protein, 2) protein-energy restricted group (PER) - free access to an isoenergetic, protein-restricted diet containing 8% protein, and 3) energy-restricted group (ER) ­ fed with restricted amounts of a standard laboratory diet. At weaning (d21), all pups were separated of dams and received free access to a standard laboratory diet containing 23% protein until 90 days (d90), when the rats were anesthetized and sacrificed. The dimensions of...
Tipo: Journal article Palavras-chave: Growth and development; Morphometry; Rats; Mandible; Undernutrition.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000200050
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Mental Foramen Morphometry in a Population from Khyber Pakhtunkhwa (KP) Pakistan International Journal of Morphology
Badshah,Masroor; Soames,Roger; Khan,Muhammad Jaffar; Hasnain,Jamshaid; Khan,Jehanzeb.
Knowledge of variations in MF location, size and shape is important when anesthetizing nerves of the mandibular region in dental procedures. The location, shape and position of the MF were determined in 119 human mandibles of unknown age and sex from different KP medical institutions. Parameters determined were: MF length and width; accessory mental foramen (AMF) width; MF and AMF to midline (MF-ML) (AMF-ML), upper (MF-UM) (AMF-UM) and lower mandibular margins (MF-LM) (AMF-LM) and posterior border of the mandibular ramus (MF-PRM) (AMF-PRM). AMF position in relation to the MF was also noted. MF were mainly oval and situated below the second premolar. MF mean length and width were: 2.4 ± 0.89 (right) and 2.4 ± 0.727 mm (left), and 3.0 ± 0.80 (right) and 2.9...
Tipo: Journal article Palavras-chave: Mental Foramen; Accessory Mental Foramen; Double Mental Foramen; Mandible; Khyber Pakhtunkhwa.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000400009
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Microbiota associated with chronic osteomyelitis of the jaws BJM
Gaetti-Jardim Júnior,Elerson; Fardin,Angélica Cristiane; Gaetti-Jardim,Ellen Cristina; Castro,Alvimar Lima de; Schweitzer,Christiane Marie; Avila-Campos,Mario Julio.
Chronic osteomyelitis of maxilla and mandible is rare in industrialized countries and its occurrence in developing countries is associated with trauma and surgery, and its microbial etiology has not been studied thoroughly. The aim of this investigation was to evaluate the microbiota associated with osteomyelitis of mandible or maxilla from some Brazilian patients. After clinical and radiographic evaluation, samples of bone sequestra, purulent secretion, and biopsies of granulomatous tissues from twenty-two patients with chronic osteomyelitis of mandible and maxilla were cultivated and submitted for pathogen detection by using a PCR method. Each patient harbored a single lesion. Bacterial isolation was performed on fastidious anaerobe agar supplemented...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteomyelitis; Bacteria; Anaerobes; Maxilla; Mandible.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000400025
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Morphodigital Study of the Mandibular Trabecular Bone in Panoramic Radiographs International Journal of Morphology
Watanabe,Plauto Christopher Aranha; Issa,João Paulo Mardegan; Oliveira,Tatiane Martín de; Monteiro,Solange Aparecida Caldeira; Iyomasa,Mamie Mizusaki; Regalo,Simone Cecilio Hallak; Siéssere,Selma.
The aim of this study was to correlate the morphodigital characteristics of the trabecular mandibular bone, in this way, it is possible to observe osteoporosis clue in patients of both sex, using panoramic radiograph for analysis. The results of this study showed statistical difference between men and women considering the bone trabecular measures (p<0.05), but it was not found statistical difference between the sides in each analyzed group (p>0.05). Male group presented a more strongly trabecular and complex bone than the female group, this finding is important index to osteoporotic risk, being possible to affirm that the male bone is less probable to suffer a osteoporotic fracture
Tipo: Journal article Palavras-chave: Mandible; Bone; Digital image; Radiograph.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400031
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Multiple Morphological Variations in a Human Mandible International Journal of Morphology
Balcioglu,Huseyin Avni; Kose,Taha Emre; Uyanikgil,Yigit.
Bilateral mylohyoid bridging, hyperplasia of the coronoid process and bifid condylar process were detected in a human mandible. It is of great interest that such rare morphological anomalies can occur in the same mandible. Since sound understanding of the anatomical variations of the mandible, in conjunction with a careful pre-operative review of radiographs, are essential in the safe and complete performance of surgical and prosthetic rehabilitation, the authors of the present report believe that this case may add to the existing literature.
Tipo: Journal article Palavras-chave: Mandible; Mylohyoid bridge; Coronoid hyperplasia; Bifid mandibular condyle.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000300034
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Newly Formed Bone in Mandible Decortication Experimental Model Using rhBMP-2 Evaluated by Densitometric Study International Journal of Morphology
Issa,João Paulo Mardegan; Tiossi,Rodrigo; Watanabe,Plauto Christopher Aranha; Siéssere,Selma; Regalo,Simone Cecílio Hallak; Lopes,Ruberval Armando; Di Matteo,Miguel Angel Sala; Iyomasa,Mamie Mizusaki; Defino,Helton Luiz Aparecido.
The purpose of this study was to evaluate the newly formed bone, comparing two different carriers for rhBMP-2, using the decortication and nondecorticatication surgical technique in Wistar rat mandibles, evaluated by radiographic densitometry method. It was used fifty six animals according to specific treatment, which were sacrificed after 3 and 6 weeks after this. It was concluded that the decortication surgical technique was able to optimize the osteoinduction properties of the rhBMP-2, independently of the material carrier used and the period of time, according to radiographic densitometry technique.
Tipo: Journal article Palavras-chave: Radiography; Densitometry; Mandible; RhBMP-2; Bone.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000100014
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Occurrence of the Accessory Foramina of the Mandibular Ramus in Brazilian Adults and its Relation to Important Mandibular Landmarks International Journal of Morphology
Lima,F. J. C; Oliveira Neto,O. B; Barbosa,F. T; Dantas,L. C. S; Olave,E; Sousa-Rodrigues,C. F.
The presence of the Accessory Foramina of the Mandibular Ramus (AFMR) may be related to anaesthetic failures in the inferior alveolar nerve block and complications in the ramus surgeries. The purpose of the present investigation was to determine the occurrence of the AFMR in adults and, when present, measure its distance to the Mandibular Foramen (MF), to the Mandibular Lingula (ML) and to the posterior margin of the mandibular ramus (PM), comparing data obtained in both sides of the mandible. Thirty dry human mandibles were selected to the present study. The AFMR was considered as every foramina identified between the MF and the PM. When present, its distance to the MF, to the ML and to the PM was measured. The AFMR was identified in 15 of the 30 examined...
Tipo: Journal article Palavras-chave: Mandible; Mandibular landmarks; Accessory foramina; Anatomical variation.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100047
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Ortopantomographic Blind Test of Mandibular Ramus Flexure as a Morphological Indicator of Sex in Chilean Young Adults International Journal of Morphology
Suazo Galdames,Iván Claudio; San Pedro Valenzuela,Jaime; Schilling Quezada,Nilo Alejandro; Celis Contreras,César Eduardo; Hidalgo Rivas,José Alejandro; Cantín López,Mario.
Loth &amp; Henneberg (1996) described a simple morphological feature for sex determination by observing the flexure of the posterior margin of the mandibular ramus, at the level of the plane occlusal. The purpose of this study is to analyze the level of agreement for determining the sex by observing the parameters described by Loth and Henneberg, in ortopantomography of totally dentate Chilean young adults. This study is based on 188 files of ortopantomography acquired from the Department of Radiology of the Dental School of Universidad de Talca, Chile. In brief, our studies indicated that in the ortopantomography of females 63.25% (62-64.5%) was correctly sexed, whereas the prediction accuracy was only 48.25% (46.5­50%) for men. The success...
Tipo: Journal article Palavras-chave: Mandible; Sex assessment; Blind test.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000100015
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Relations Between the Mandibular Canal and I, II and III Angle Classes in Panoramic Radiographs International Journal of Morphology
Falkine,Raisa Zago; Rossi,Ana Cláudia; Freire,Alexandre Rodrigues; Figueroba,Sidney Raimundo; Groppo,Francisco Carlos; Caria,Paulo Henrique Ferreira; Prado,Felippe Bevilacqua.
To prevent injury to the inferior alveolar nerve during dental procedures, knowledge of its anatomical location and course of the mandibular canal is imperative. The aim of this study was evaluate the location on panoramic radiographs of the mandibular canal in relation to the apices of the permanent mandibular molars and base mandible, and relate the type of mandibular canal with Angle classes I, II and III. We evaluated 748 panoramic radiographs distributed according to sex and occlusal class (Angle I, II and III) of fully dentate individuals, 18­51 age group. The radiographs were divided according to Angle classes based on cephalometric tracing, clinical data from the medical records of each individual and the analysis of of the maxillar and mandibular...
Tipo: Journal article Palavras-chave: Mandibular canal; Mandible; Panoramic radiograph; Malocclusion; Molars.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200012
Registros recuperados: 25
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