Results 71 to 80 of about 20,661 (261)

Postcranial anatomy and osteohistology of an early prozostrodont cynodont from the Upper Triassic of Brazil

The Anatomical Record, EarlyView.
Abstract Prozostrodon brasiliensis, a probainognathian cynodont of the clade Prozostrodontia, is recognized as a key taxon for understanding the origin of Mammaliaformes and mammals. Despite detailed investigations of its cranial anatomy, the postcranial skeleton has received comparatively less attention.
Iasmim M. Michelotti, Lívia Roese‐Miron, Brodsky Dantas Macedo Farias, Marina Bento Soares, Leonardo Kerber   +4 more
wiley   +1 more source

Developmental differences in cortical bone structure in chimpanzee and human femora reflect early locomotor independence in humans

The Anatomical Record, EarlyView.
Abstract The cortical bone structure of long bone diaphyses changes throughout growth via skeletal modeling and has important implications for bone strength and structural integrity. Ontogenetic trends in diaphyseal structure have been identified in both chimpanzees and humans but it is not yet clear how these trends compare given notable differences ...
Karen R. Swan, Rachel Ives, Zewdi J. Tsegai, Louise T. Humphrey   +3 more
wiley   +1 more source

C-shaped root canal systems in the bilateral mandibular first molars: a case report and literature review

BMC Oral Health
Background Mandibular first molars typically exhibit complex root and canal anatomy. A thorough understanding of their morphological variations is crucial for endodontists to achieve successful root canal treatment.
Rongjing Zhou, Lili Shen, Chengshi Wei
doaj   +1 more source

Root canal morphology of permanent mandibular incisors of Saudi subpopulation in Al-Baha region: A cone-beam computed tomography study

Saudi Endodontic Journal
Introduction: A proper understanding of root canal morphology and its deviations is essential for improving the outcomes of endodontic procedures. Therefore, the current study aims to explore the root canal morphology of permanent mandibular central and ...
Mohammed S. Alzahrani, Abdullah A. Alzahrani, Alaa M. Alghamdi, Abdulaziz Alghamdi, Hamod Alqahtani, Amal Ahmed Alzahrani, Manikandan Ravinanthanan, Khalid Lafi Alrashedi   +7 more
doaj   +1 more source

A cone-beam computed tomography study of C-shaped root canal systems in mandibular second premolars in a Taiwan Chinese subpopulation

Journal of the Formosan Medical Association, 2018
Background/Purpose: The purpose of this study is to investigate the prevalence and the morphologic characteristics of the radicular groove and root canal system in human mandibular second premolars with C-shaped root in a Taiwan Chinese subpopulation ...
Yi-Chin Chen, Chia-Lun Tsai, Yi-Chen Chen, Gin Chen, Shue-Fen Yang   +4 more
doaj   +1 more source

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson, Alison M. Murray, Donald B. Brinkman   +2 more
wiley   +1 more source

Endodontic Retreatment Of Mandibular Incisors With Root Canals Variations

International Dental Journal
Introduction: Mandibular incisors have been found to have a complex anatomy of the root canal system. Missed root canals are the most likely cause of treatment failure, and the persistent intra-radicular infections can lead to periapical lesion and ...
Kai Chen, Yuxia Shi, Ni Li
doaj   +1 more source

Comparison between cone beam computed tomography and panoramic radiography in the assessment of the relationship between the mandibular canal and impacted class C mandibular third molars

Dental Research Journal, 2011
Background: Preoperative radiographic evaluation of impacted third molars is essential to determine the proximity to the mandibular canal to minimize the risk of nerve injury.
Zahra Dalili, Porousha Mahjoub, Ali Khalighi Sigaroudi   +2 more
doaj   +1 more source

Management of severe bone loss in patients at risk of medication‐related osteonecrosis of the jaw with microsurgery and guided bone regeneration: A case study

Clinical Advances in Periodontics, EarlyView.
Abstract Background Medication‐related osteonecrosis of the jaw (MRONJ) is a challenging complication associated with antiresorptive medications. Its exact pathophysiology remains unclear, but dental extractions and infections are known triggers, complicating prevention, and treatment.
Pedro Franco Ferreira, José Maurício Paradella de Camargo, Lara Maria Alencar Ramos Innocentini, Ana Carolina Fragoso Motta   +3 more
wiley   +1 more source

Cone-beam computed tomography study of root and canal morphology of mandibular premolars in a western Chinese population

BMC Medical Imaging, 2012
Background Traditional radiography is limited in its ability to give reliable information on the number and morphology of root canals. The application of cone-beam computed tomography (CBCT) provides a non-invasive three-dimensional confirmatory ...
Yu Xuan, Guo Bin, Li Ke-Zeng, Zhang Ru, Tian Yuan-Yuan, Wang Hu, DDS Tao   +6 more
doaj   +1 more source