Results 41 to 50 of about 39,673 (219)

The lower deciduous dentition of protodidelphids (Mammalia, Marsupialia) from the Itaboraí Basin (lower Eocene), Brazil, and the validity of “Riolestes capricornicus” (Goin et al., 2009)

The Anatomical Record, EarlyView.
Abstract The Itaboraí Basin, Southeastern Brazil, preserved one of the most diverse mammalian faunas from the Paleogene, with Metatheria comprising more than 60% of its diversity. Among identified metatherian clades, it has been argued that Paucituberculata is represented by “Riolestes capricornicus”.
Leonardo M. Carneiro, Hugo Bampi, João P. P. Araújo, Marina B. Soares, Gustavo R. Oliveira   +4 more
wiley   +1 more source

Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil

The Anatomical Record, EarlyView.
Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva, Valéria Gallo, Estevan Eltink   +2 more
wiley   +1 more source

A Successful Reinforcement and Restoration of an Already Damaged Post and Core in a Teeth with an Existing Crown That Has Received Endodontic Treatment: 3 Case Reports

Indian Journal of Dental Sciences
Once correctly indicated, endodontic retreatment requires the preservation of dental components. Effective treatment of teeth with severe damage to the structure of the tooth relies not only on successful endodontic treatment but also on timely ...
Balkaran Singh Kanwar, Neeraj Sharma, Munish Goel, Nidhi Aggarwal   +3 more
doaj   +1 more source

The Relationship between Crown Size and Complexity in Two Collections

Dental Anthropology, 2007
Many studies show human tooth crown size increases with increasing crown complexity (i.e., extra cusps, tubercles or grooves). Plio-Pleistocene hominid tooth size reduction has also incurred reduction in complexity, which plays into many theories that ...
Bridgett A. Williams, Robert S. Corruccini   +1 more
doaj   +1 more source

Anatomy and variation in the paraphyletic Mosasaurus lemonnieri assemblage from the Craie phosphatée de ciply, Belgium

The Anatomical Record, EarlyView.
Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe, Hallie P. Street‐Sampson, Takuya Konishi, Michael W. Caldwell   +3 more
wiley   +1 more source

Cristid obliqua morphology as a correlate of diet in lorisoids

The Anatomical Record, EarlyView.
Abstract Methods for elucidating dietary patterns from dental morphology have provided much insight into molar form, function, and diet in extinct taxa. However, many methods rely on the collection of homologous landmarks (like shearing crest lengths), or computationally intensive and nuanced metrics that capture shape (like dental topography). Here, a
Keegan R. Selig
wiley   +1 more source

Tooth Hemisection In Permanent-Supernumerary Tooth Fusion

International Dental Journal
Introduction: This case report described a teenager with fusion of tooth 21 with a supernumerary tooth, treated by hemisection. A vital pulpotomy was performed on tooth 21.
Zhou Zhang
doaj   +1 more source

Clinical application of custom all⁃ceramic crown based on CT data in maxillary anterior implant tooth

口腔疾病防治, 2017
Objective To evaluate the clinical outcomes of custom all⁃ceramic crown fabricated in zirconia based on CT data in maxillary anterior implant tooth. Methods 15 patients with single anterior tooth missing were applied to this treatment. Crown remodeling
YANG Rui
doaj   +1 more source

Redescription of †Eobrasilia coutoi (Metatheria: Polydolopimorphia), a unique sclerocarpophagous metatherian from the Palaeogene of South America: Systematic affinities, and paleoecological and evolutionary implications

The Anatomical Record, EarlyView.
Abstract The ‘Palaeogene strata’ of the Itaboraí Basin (upper Paleocene‐lower Eocene), Southeastern Brazil, has preserved 29 genera and almost 50 species of metatherians (about 65% of its mammalian diversity). Among them, Eobrasilia coutoi Simpson, 1947 is the most enigmatic due to its quite fragmentary nature.
Leonardo M. Carneiro, Hugo Bampi, Ana C. Bernardes‐Dias, Lidiane Asevedo, João P. P. Araújo, Matheus R. Arêas, Alessandra S. Machado, Ricardo T. Lopes, Rafael C. Silva, Marina B. Soares, Gustavo R. Oliveira   +10 more
wiley   +1 more source

Multidisciplinary management of subgingival crown-root fracture of an immature permanent maxillary central incisor

Dental Research Journal, 2012
This case report describes the multidisciplinary management of subgingival horizontal crown-root fracture of an immature permanent maxillary central incisor in a 10-year-old boy.
Samir Zahedpasha, Hengameh Safarcherati, Manouchehr Rahmati-Kamel, Javad Mehrani-Sabet   +3 more
doaj   +1 more source