Results 1 to 10 of about 1,731,004 (247)

Deletion/loss of bone morphogenetic protein 7 changes tooth morphology and function in Mus musculus: implications for dental evolution in mammals [PDF]

open access: yesRoyal Society Open Science, 2018
Quantifying regulatory gene effects on dental morphology and function has implications for the underlying mechanisms that generated dental diversity in mammals.
Chelsey Zurowski   +3 more
doaj   +3 more sources

Dental Morphology in Restorative Dentistry: A Pilot Study on Morphological Consistency and Variability in Human Upper First Molars [PDF]

open access: yesDentistry Journal
Background: Geometric morphometric analysis, a methodology traditionally used in evolutionary studies, offers unprecedented precision in quantifying the morphological traits of human organs and tissues by identifying specific anatomical landmarks ...
Gregorio Oxilia   +2 more
doaj   +2 more sources

Isthmuses, accessory canals, and the direction of root curvature in permanent mandibular first molars: an in vivo computed tomography study [PDF]

open access: yesRestorative Dentistry & Endodontics, 2020
ObjectivesThis study was performed to assess the anatomy of mandibular first molars.Materials and MethodsIn this in vivo study, cone-beam computed tomography (CBCT) volumes of 312 bilateral intact first mandibular molars from 156 patients (79 men and 77 ...
Aria Chuppani Dastgerdi   +2 more
doaj   +1 more source

Molar morphology and occlusion of the Early Jurassic mammaliaform Erythrotherium parringtoni [PDF]

open access: yesActa Palaeontologica Polonica, 2022
The South African Early Jurassic morganucodontan Erythrotherium is considered by some authors to be potentially synonymous with Morganucodon, due to similar tooth morphology.
KAI R.K. JÄGER   +3 more
doaj   +1 more source

Morphometric analysis of three-rooted mandibular first molars in a Slovene population: a macroscopic and cone-beam computed tomography analysis

open access: yesFolia Morphologica, 2022
BACKGROUND: This study examined the root morphology of mandibular first molars (MFMs) with radix entomolaris (RE), which presents diagnostic and therapeutic challenges for clinicians. MATERIALS AND METHODS: A total of 17 three-rooted MFMs were taken from
L. Strmšek, I. Štamfelj
doaj   +1 more source

Expression of CD31, CD34, and smooth muscle actin (SMA) in endothelial cells of dental pulp vessels

open access: yesBiomolecules & Biomedicine, 2023
The dental pulp is a highly vascularized and innervated loose connective tissue surrounded by hard dental tissues – enamel and dentine. With the primary dentin formation and the closure of the root apex, the conditions in the dental pulp change and pulp
Ana Tenyi   +2 more
doaj   +1 more source

The role of clinical examination in the detection of permanent maxillary molars with two palatal roots

open access: yesFolia Morphologica, 2020
Background: The aim of the study was to determine whether the presence of two palatal roots (2PR) in permanent maxillary molars (PMMs) could be predicted by observing dental morphological traits during the clinical examination.
T. Hitij, I. Štamfelj
doaj   +1 more source

New material of the trechnotherian mammal Lactodens from the Early Cretaceous Jehol Biota: Comparison with Origolestes and implications for mammal evolution [PDF]

open access: yesActa Palaeontologica Polonica, 2022
A new specimen of Lactodens sheni, the only known spalacolestine from the Early Cretaceous Jehol Biota, is reported from the Jiufotang Formation, Liaoning, China.
FANGYUAN MAO, CUNYU LIU, JIN MENG
doaj   +1 more source

Carnassiform notches improve the functional efficiency of bat molar shearing crests [PDF]

open access: yesActa Palaeontologica Polonica, 2022
We surveyed molar surface morphology of bats of 281 extant and extinct species in 5 archaic and 19 extant families using scanning microscopy. We note the occurrence of structural features on talonid crests, the cristid obliqua, postcristid, and ...
NICHOLAS J. CZAPLEWSKI, CHARLES G. BAKER
doaj   +1 more source

Genes and tooth development: reviewing the structure and function of some key players.

open access: yesBrazilian Journal of Oral Sciences, 2015
Similar to many other embryonic organs, the mammalian tooth development relies largely on epithelial-mesenchymal interactions. Tooth development may be divided in multiple stages, where the number, size and type of teeth are sequentially determined ...
Raquel Mantuaneli S. Caminaga   +3 more
doaj   +1 more source

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