Base de dados : MEDLINE
Pesquisa : A03.556.500.379 [Categoria DeCS]
Referências encontradas : 2984 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 299 ir para página                         

  1 / 2984 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29157543
[Au] Autor:Sadrameli M; Mupparapu M
[Ad] Endereço:The University of British Columbia, 2194 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3, Canada.
[Ti] Título:Oral and Maxillofacial Anatomy.
[So] Source:Radiol Clin North Am;56(1):13-29, 2018 Jan.
[Is] ISSN:1557-8275
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This article deals with identification and descriptions of intraoral and extraoral anatomy of the dental and maxillofacial structures. The anatomic landmarks are highlighted and described based on their radiographic appearance and their clinical significance is provided. Cone beam CT-based images are described in detail using the multiplanar reconstructions. The skull views are depicted via line diagrams in addition to their normal radiographic appearance to make identification of anatomic structures easier for clinicians. The authors cover most of the anatomic structures commonly noted via radiographs and their descriptions. This article serves as a clinician's guide to oral and maxillofacial radiographic anatomy.
[Mh] Termos MeSH primário: Dentição
Ossos Faciais/anatomia & histologia
Arcada Osseodentária/anatomia & histologia
Modelos Anatômicos
Dente/anatomia & histologia
[Mh] Termos MeSH secundário: Ossos Faciais/diagnóstico por imagem
Seres Humanos
Arcada Osseodentária/diagnóstico por imagem
Radiografia Dentária/métodos
Dente/diagnóstico por imagem
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:171122
[St] Status:MEDLINE


  2 / 2984 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29157540
[Au] Autor:Husain MA
[Ad] Endereço:Section of Oral and Maxillofacial Radiology, UCLA School of Dentistry, 10833 Le Conte Avenue, 53-067A CHS, Box 951668, Los Angeles, CA 90095-1668, USA. Electronic address: mhusain@dentistry.ucla.edu.
[Ti] Título:Dental Anatomy and Nomenclature for the Radiologist.
[So] Source:Radiol Clin North Am;56(1):1-11, 2018 Jan.
[Is] ISSN:1557-8275
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Head and neck imaging studies frequently encompass the oral cavity and human dentition. Given the relatively wide prevalence of dental disease, the likelihood of detecting incidental dental pathology is high. This article provides an overview of dental terminology, anatomy, restorations, and associated computed tomography imaging artifacts necessary to more effectively interpret and communicate findings related to teeth.
[Mh] Termos MeSH primário: Dentição
Arcada Osseodentária/anatomia & histologia
Modelos Anatômicos
Radiografia Dentária/classificação
Terminologia como Assunto
Dente/anatomia & histologia
[Mh] Termos MeSH secundário: Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:171122
[St] Status:MEDLINE


  3 / 2984 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28531170
[Au] Autor:Fuss J; Spassov N; Begun DR; Böhme M
[Ad] Endereço:Department of Geoscience, Eberhard-Karls-University Tübingen, Sigwartstr. 10, Tübingen, Germany.
[Ti] Título:Potential hominin affinities of Graecopithecus from the Late Miocene of Europe.
[So] Source:PLoS One;12(5):e0177127, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The split of our own clade from the Panini is undocumented in the fossil record. To fill this gap we investigated the dentognathic morphology of Graecopithecus freybergi from Pyrgos Vassilissis (Greece) and cf. Graecopithecus sp. from Azmaka (Bulgaria), using new µCT and 3D reconstructions of the two known specimens. Pyrgos Vassilissis and Azmaka are currently dated to the early Messinian at 7.175 Ma and 7.24 Ma. Mainly based on its external preservation and the previously vague dating, Graecopithecus is often referred to as nomen dubium. The examination of its previously unknown dental root and pulp canal morphology confirms the taxonomic distinction from the significantly older northern Greek hominine Ouranopithecus. Furthermore, it shows features that point to a possible phylogenetic affinity with hominins. G. freybergi uniquely shares p4 partial root fusion and a possible canine root reduction with this tribe and therefore, provides intriguing evidence of what could be the oldest known hominin.
[Mh] Termos MeSH primário: Hominidae/classificação
Raiz Dentária/anatomia & histologia
Microtomografia por Raio-X/métodos
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Bulgária
Dentição
Fósseis
Grécia
Hominidae/anatomia & histologia
Modelos Anatômicos
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170914
[Lr] Data última revisão:
170914
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170523
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0177127


  4 / 2984 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28380079
[Au] Autor:Leung C; Duclos KK; Grünbaum T; Cloutier R; Angers B
[Ad] Endereço:Department of Biological Sciences, Université de Montréal, Montreal, Quebec, Canada.
[Ti] Título:Asymmetry in dentition and shape of pharyngeal arches in the clonal fish Chrosomus eos-neogaeus: Phenotypic plasticity and developmental instability.
[So] Source:PLoS One;12(4):e0174235, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The effect of the environment may result in different developmental outcomes. Extrinsic signals can modify developmental pathways and result in alternative phenotypes (phenotypic plasticity). The environment can also be interpreted as a stressor and increase developmental instability (developmental noise). Directional and fluctuating asymmetry provide a conceptual background to discriminate between these results. This study aims at assessing whether variation in dentition and shape of pharyngeal arches of the clonal fish Chrosomus eos-neogaeus results from developmental instability or environmentally induced changes. A total of 262 specimens of the Chrosomus eos-neogaeus complex from 12 natural sites were analysed. X-ray microcomputed tomography (X-ray micro-CT) was used to visualize the pharyngeal arches in situ with high resolution. Variation in the number of pharyngeal teeth is high in hybrids in contrast to the relative stability observed in both parental species. The basal dental formula is symmetric while the most frequent alternative dental formula is asymmetric. Within one lineage, large variation in the proportion of individuals bearing basal or alternative dental formulae was observed among sites in the absence of genetic difference. Both dentition and arch shape of this hybrid lineage were explained significantly by environmental differences. Only individuals bearing asymmetric dental formula displayed fluctuating asymmetry as well as directional left-right asymmetry for the arches. The hybrids appeared sensitive to environmental signals and intraspecific variation on pharyngeal teeth was not random but reflects phenotypic plasticity. Altogether, these results support the influence of the environment as a trigger for an alternative developmental pathway resulting in left-right asymmetry in dentition and shape of pharyngeal arches.
[Mh] Termos MeSH primário: Região Branquial/fisiologia
Peixes/fisiologia
Dente/fisiologia
[Mh] Termos MeSH secundário: Animais
Dentição
Meio Ambiente
Fenótipo
Microtomografia por Raio-X/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170830
[Lr] Data última revisão:
170830
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170406
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0174235


  5 / 2984 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28241059
[Au] Autor:Kear BP; Larsson D; Lindgren J; Kundrát M
[Ad] Endereço:Museum of Evolution, Uppsala University, Uppsala, Sweden.
[Ti] Título:Exceptionally prolonged tooth formation in elasmosaurid plesiosaurians.
[So] Source:PLoS One;12(2):e0172759, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Elasmosaurid plesiosaurians were globally prolific marine reptiles that dominated the Mesozoic seas for over 70 million years. Their iconic body-plan incorporated an exceedingly long neck and small skull equipped with prominent intermeshing 'fangs'. How this bizarre dental apparatus was employed in feeding is uncertain, but fossilized gut contents indicate a diverse diet of small pelagic vertebrates, cephalopods and epifaunal benthos. Here we report the first plesiosaurian tooth formation rates as a mechanism for servicing the functional dentition. Multiple dentine thin sections were taken through isolated elasmosaurid teeth from the Upper Cretaceous of Sweden. These specimens revealed an average of 950 daily incremental lines of von Ebner, and infer a remarkably protracted tooth formation cycle of about 2-3 years-other polyphyodont amniotes normally take ~1-2 years to form their teeth. Such delayed odontogenesis might reflect differences in crown length and function within an originally uneven tooth array. Indeed, slower replacement periodicity has been found to distinguish larger caniniform teeth in macrophagous pliosaurid plesiosaurians. However, the archetypal sauropterygian dental replacement system likely also imposed constraints via segregation of the developing tooth germs within discrete bony crypts; these partly resorbed to allow maturation of the replacement teeth within the primary alveoli after displacement of the functional crowns. Prolonged dental formation has otherwise been linked to tooth robustness and adaption for vigorous food processing. Conversely, elasmosaurids possessed narrow crowns with an elongate profile that denotes structural fragility. Their apparent predilection for easily subdued prey could thus have minimized this potential for damage, and was perhaps coupled with selective feeding strategies that ecologically optimized elasmosaurids towards more delicate middle trophic level aquatic predation.
[Mh] Termos MeSH primário: Dentição
Odontogênese
Répteis/anatomia & histologia
Dente/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Ecologia
Comportamento Alimentar
Fósseis
Paleodontologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170907
[Lr] Data última revisão:
170907
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170228
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0172759


  6 / 2984 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28236504
[Au] Autor:Harrison JS; Higgins BA; Mehta RS
[Ad] Endereço:Department of Ecology and Evolutionary Biology, Long Marine Laboratory, University of California Santa Cruz,100 Shaffer Road, Santa Cruz, CA 95060, USA. Electronic address: jacob.harrison@duke.edu.
[Ti] Título:Scaling of dentition and prey size in the California moray (Gymnothorax mordax).
[So] Source:Zoology (Jena);122:16-26, 2017 Jun.
[Is] ISSN:1873-2720
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Scaling patterns of tooth morphology can provide insights on prey capture strategy and dietary patterns as species grow through ontogeny. We report the scaling of dentition and diet and how it relates to body size in the California moray, Gymnothorax mordax. We sampled lengths, widths, and curvature for teeth lining five distinct regions of the oral jaws across 21 G. mordax individuals ranging from 383 to 1110mm total length. Absolute tooth length in relation to moray size shows positive allometry only for the outer maxillary teeth, while teeth lining the inner maxilla display positive allometry in tooth base width. All other regions exhibit isometric growth in both length and width relative to moray size. Similar to previous descriptions of other moray species, the longest teeth in the oral jaws are the median intermaxillary teeth. This series of three teeth are depressible and rooted in the center of the ethmovomer, the bone that forms the roof of the rostrum. We hypothesize that caudal mobility of the median intermaxillary teeth aids in prey transport by enabling the pharyngeal jaws to remove pierced prey without requiring full abduction of the oral jaws. The predominantly isometric tooth growth in G. mordax suggests that the oral teeth grow proportionately as individuals increase in size. Stomach contents from the field suggest that G. mordax is highly piscivorous. While a strong positively allometric relationship between vertical gape and head length supports the expectation that moray increase relative prey size over ontogeny, we found no relationship between prey standard length and moray size. This suggests that while larger individuals are capable of consuming larger prey, individual G. mordax are opportunistic predators that do not specialize on prey of a specific size over ontogeny.
[Mh] Termos MeSH primário: Dentição
Enguias/anatomia & histologia
Enguias/fisiologia
Comportamento Predatório
[Mh] Termos MeSH secundário: Animais
Crânio/anatomia & histologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170915
[Lr] Data última revisão:
170915
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170226
[St] Status:MEDLINE


  7 / 2984 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28187210
[Au] Autor:Benoit J; Norton LA; Manger PR; Rubidge BS
[Ad] Endereço:Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, Gauteng, South Africa.
[Ti] Título:Reappraisal of the envenoming capacity of Euchambersia mirabilis (Therapsida, Therocephalia) using µCT-scanning techniques.
[So] Source:PLoS One;12(2):e0172047, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Euchambersia mirabilis is an iconic species of Permo-Triassic therapsid because of its unusually large external maxillary fossa linked through a sulcus to a ridged canine. This anatomy led to the commonly accepted conclusion that the large fossa accommodated a venom gland. However, this hypothesis remains untested so far. Here, we conducted a µCT scan assisted reappraisal of the envenoming capacity of Euchambersia, with a special focus on the anatomy of the maxillary fossa and canines. This study shows that the fossa, presumably for the venom-producing gland, is directly linked to the maxillary canal, which carries the trigeminal nerve (responsible for the sensitivity of the face). The peculiar anatomy of the maxillary canal suggests important reorganisation in the somatosensory system and that a ganglion could possibly have been present in the maxillary fossa instead of a venom gland. Nevertheless, the venom gland hypothesis is still preferred since we describe, for the first time, the complete crown morphology of the incisiform teeth of Euchambersia, which strongly suggests that the complete dentition was ridged. Therefore Euchambersia manifests evidence of all characteristics of venomous animals: a venom gland (in the maxillary fossa), a mechanism to deliver the venom (the maxillary canal and/or the sulcus located ventrally to the fossa); and an apparatus with which to inflict a wound for venom delivery (the ridged dentition).
[Mh] Termos MeSH primário: Glândulas Exócrinas/anatomia & histologia
Fósseis/anatomia & histologia
Maxila/anatomia & histologia
Peçonhas/secreção
[Mh] Termos MeSH secundário: Animais
Dentição
Glândulas Exócrinas/diagnóstico por imagem
Fósseis/diagnóstico por imagem
Maxila/diagnóstico por imagem
Répteis
Microtomografia por Raio-X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Venoms)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170809
[Lr] Data última revisão:
170809
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170211
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0172047


  8 / 2984 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28181377
[Au] Autor:Solé F; Ladevèze S
[Ad] Endereço:Evo-Devo of Vertebrate Dentition, Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, Université de Lyon, UCBL 1, CNRS, Lyon, France.
[Ti] Título:Evolution of the hypercarnivorous dentition in mammals (Metatheria, Eutheria) and its bearing on the development of tribosphenic molars.
[So] Source:Evol Dev;19(2):56-68, 2017 Mar.
[Is] ISSN:1525-142X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:One major innovation of mammals is the tribosphenic molar, characterized by the evolution of a neomorphic upper cusp (=protocone) and a lower basin (=talonid) that occlude and provide shearing and crushing functions. This type of molar is an evolutionarily flexible structure that enabled mammals to achieve complex dental adaptations. Among carnivorous mammals, hypercarnivory is a common trend that evolved several times among therians (marsupials, placentals, and stem relatives). Hypercarnivory involves an important simplification of the carnassial molar pattern from the ancestral tribosphenic molar pattern, with the modification of the triangular tooth crown, and the loss of several cusps and cuspids typical of the tribosphenic molar. These losses confer to the molars of the hypercarnivorous mammals a plesiomorphic/paedomorphic morphology that resembles more the earliest mammaliaforms than the earliest therians. Here, we demonstrate that the modification of the molar morphology is fully explained by a patterning cascade mode of cusp development. Contrary to what was previously proposed, our study concludes that the metaconid (mesiolingual cusp of lower molars, associated with a puncturing function) does not influence cusp development of the talonid (distal crushing heel of lower molars). Moreover, it provides a new example of how heterochronic changes were crucial to the evolution of mammal dentition. To overcome the difficulty of applying behavioral or ecological definitions of diets to fossil animals, we characterize hypercarnivorous dentitions on the basis of the molar morphology and more particularly on the loss or retention of crushing structures, each dentition resulting from adaptations to a distinct ecomorphotype. Despite repeated and convergent evolution of hypercarnivorous forms, hypercarnivory appears as a highly constrained specialization (i.e., "dead end") that is unlikely to evolve back to omnivorous dentition, especially when the crushing structures are lost.
[Mh] Termos MeSH primário: Evolução Biológica
Mamíferos/anatomia & histologia
Mamíferos/genética
Dente Molar/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
Dentição
Dieta
Mamíferos/classificação
Mamíferos/crescimento & desenvolvimento
Dente Molar/crescimento & desenvolvimento
Dente Molar/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170706
[Lr] Data última revisão:
170706
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170210
[St] Status:MEDLINE
[do] DOI:10.1111/ede.12219


  9 / 2984 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28131012
[Au] Autor:Franco A; Willems G; Souza P; Coucke W; Thevissen P
[Ad] Endereço:Department of Oral Health Sciences - Forensic Dentistry, KU Leuven & Dentistry, University Hospitals Leuven, Belgium; Department of Dentistry - Stomatology, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Brazil. Electronic address: franco.gat@gmail.com.
[Ti] Título:Uniqueness of the anterior dentition three-dimensionally assessed for forensic bitemark analysis.
[So] Source:J Forensic Leg Med;46:58-65, 2017 Feb.
[Is] ISSN:1878-7487
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The uniqueness of the human dentition (UHD) is an important concept in the comparative process in bitemark analysis. During this analysis, the incisal edges of the suspects' teeth are matched with the bitemarks collected from the victim's body or crime scenes. Despite playing an essential part to exclude suspects, the UHD contained in the involved incisal tooth edges remains an assumption on bitemark level. The present study was aimed, first, to investigate three-dimensionally (3D) the UHD within different quantities of dental material from the incisal edges; second, to test these outcomes in a bidimensional (2D) simulation. Four-hundred forty-five dental casts were collected to compose 4 study groups: I - randomly-selected subjects, II - orthodontically treated subjects, III - twins and IV - orthodontically treated twins. Additionally, 20 dental casts were included to create threshold groups on subjects from whom the dental impressions were taken at 2 different moments (Group V). All the dental casts were digitalized with an automated motion device (XCAD 3D (XCADCAM Technology , São Paulo, SP, Brazil). The digital cast files (DCF) were integrated in Geomagic Studio (3D Systems , Rock Hill, SC, USA) software package (GS) for cropping, automated superimposition and pair-wise comparisons. All the DCF were cropped remaining 3 mm (part 1), 2 mm (part 2) and 1 mm (part 3) from the incisal edges of the anterior teeth. For a 2D validation, slices of 1 mm, not including incisal edges (part 4), were also cropped. These procedures were repeated in Group V, creating specific thresholds for each of the study parts. The 4 study groups were compared with its respective threshold using ANOVA test with statistical significance of 5%. Groups I, II and III did not differ from the corresponding threshold (Group V) in all study parts (p > 0.05). Scientific evidence to support the UHD was not observed in the current study. Bitemark analysis should not be disregarded but considered carefully when the suspects present similar dental alignment and morphology, such as in orthodontically treated subjects and twins, respectively.
[Mh] Termos MeSH primário: Mordeduras Humanas/patologia
Modelos Dentários
Dentição
Imagem Tridimensional
[Mh] Termos MeSH secundário: Feminino
Odontologia Legal
Seres Humanos
Processamento de Imagem Assistida por Computador
Masculino
Sensibilidade e Especificidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170314
[Lr] Data última revisão:
170314
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170129
[St] Status:MEDLINE


  10 / 2984 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27889924
[Au] Autor:Tomita T; Miyamoto K; Kawaguchi A; Toda M; Oka SI; Nozu R; Sato K
[Ad] Endereço:Zoological Laboratory, Okinawa Churashima Research Center, Okinawa Churashima Foundation, Okinawa, Japan.
[Ti] Título:Dental ontogeny of a white shark embryo.
[So] Source:J Morphol;278(2):215-227, 2017 Feb.
[Is] ISSN:1097-4687
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Unlike most viviparous vertebrates, lamniform sharks develop functional teeth during early gestation. This feature is considered to be related to their unique reproductive mode where the embryo grows to a large size via feeding on nutritive eggs in utero. However, the developmental process of embryonic teeth is largely uninvestigated. We conducted X-ray microcomputed tomography to observe the dentitions of early-, mid-, and full-term embryos of the white shark Carcharodon carcharias (Lamniformes, Lamnidae). These data reveal the ontogenetic change of embryonic dentition of the species for the first time. Dentition of the early-term embryos (∼45 cm precaudal length, PCL) is distinguished from adult dentition by 1) the presence of microscopic teeth in the distalmost region of the paratoquadrate, 2) a fang-like crown morphology, and 3) a lack of basal concavity of the tooth root. The "intermediate tooth" of early-term embryos is almost the same size as the adjacent teeth, suggesting that lamnoid-type heterodonty (lamnoid tooth pattern) has not yet been established. We also discovered that mid-term embryos (∼80 cm PCL) lack functional dentition. Previous studies have shown that the maternal supply of nutritive eggs in lamnoid sharks ceases during mid- to late-gestation. Thus, discontinuation of functional tooth development is likely associated with the completion of the oophagous (egg-eating) phase. Replacement teeth in mid-term embryos include both embryonic and adult-type teeth, suggesting that the embryo to adult transition in dental morphology occurs during this period. J. Morphol. 278:215-227, 2017. © 2016 Wiley Periodicals,Inc.
[Mh] Termos MeSH primário: Dentição
Tubarões/embriologia
Dente/embriologia
[Mh] Termos MeSH secundário: Animais
Microtomografia por Raio-X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170815
[Lr] Data última revisão:
170815
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161128
[St] Status:MEDLINE
[do] DOI:10.1002/jmor.20630



página 1 de 299 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde