Results 51 to 60 of about 46,767 (261)

Early stages of tooth development in the harbor porpoise Phocoena phocoena

The Anatomical Record, EarlyView.
Abstract Here we describe the stages of tooth development in toothed whales on the basis of the harbor porpoise (Phocoena phocoena). The aim of the study was to find out whether these stages are identical to those of other mammals analyzed so far although toothed whales are homodont and monophyodont.
Lasse M. Mathes, Lennart Müller‐Thomsen, Stefan Huggenberger   +2 more
wiley   +1 more source

Dental anomalies in Pleistocene African hippopotamuses from Olduvai Bed II

The Anatomical Record, EarlyView.
Abstract Hippopotamuses are key palaeoenvironmental indicators in African Pleistocene ecosystems due to their ecological dependence on permanent water bodies and their frequent representation in the fossil record. This study examines dental anomalies in Hippopotamus cf. gorgops from several localities in Bed II of Olduvai Gorge (Tanzania), dated to ca.
Darío Fidalgo, Faysal Bibi, Jean‐Renaud Boisserie, Jackson K. Njau, Ignacio de la Torre   +4 more
wiley   +1 more source

Comparative evaluation of three different toothpastes on remineralization potential of initial enamel lesions: A scanning electron microscopic study

Indian Journal of Dental Research, 2020
Background: The early enamel lesions are reversible as it is a process involving mineral transactions between the teeth and saliva. Aim: To evaluate the efficiency of three different tooth pastes on remineralization potential of initial enamel lesions ...
T P Chandru, M Bazanth Yahiya, Faizal C Peedikayil, N Dhanesh, N Srikant, Soni Kottayi   +5 more
doaj   +1 more source

Monthly mobility inferred from isoscapes and laser ablation strontium isotope ratios in caprine tooth enamel

Scientific Reports, 2021
Strontium isotopic analysis of sequentially formed tissues, such as tooth enamel, is commonly used to study provenance and mobility of humans and animals.
N. Lazzerini, V. Balter, A. Coulon, T. Tacail, C. Marchina, M. Lemoine, N. Bayarkhuu, Ts. Turbat, S. Lepetz, A. Zazzo   +9 more
doaj   +1 more source

Integrated microanatomy and microstructure of the maxillary tooth plate reveal a reinforced feeding system and tougher diet in Late Triassic Hyperodapedontinae (Rhynchosauria, Archosauromorpha)

The Anatomical Record, EarlyView.
Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini, Pedro L. B. Pruciano, Brodsky D. M. Farias, Marina B. Soares   +3 more
wiley   +1 more source

Loss, persistence and reversal of phenotypic traits

Biological Reviews, EarlyView.
ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni, Giuseppe Fusco, Filippo Nicolini, Heather Bruce, Andrea Luchetti   +4 more
wiley   +1 more source

The crucial role of centrioles in tooth growth and development

Journal of the Formosan Medical Association
Background: Tooth development hinged on reciprocal interactions between enamel and dentin, shaping tooth structures. Centrioles influenced cellular direction, critical for stem cell differentiation.
Shan-Li Pei, Rung-Shu Chen, Min-Huey Chen   +2 more
doaj   +1 more source

Efficient induction of functional ameloblasts from human keratinocyte stem cells

Stem Cell Research & Therapy, 2018
Background Although adult human tissue-derived epidermal stem cells are capable of differentiating into enamel-secreting ameloblasts and forming teeth with regenerated enamel when recombined with mouse dental mesenchyme that possesses odontogenic ...
Xuefeng Hu, Jyh-Wei Lee, Xi Zheng, Junhua Zhang, Xin Lin, Yingnan Song, Bingmei Wang, Xiaoxiao Hu, Hao-Hueng Chang, Yiping Chen, Chun-Pin Lin, Yanding Zhang   +11 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

Cdc42 deletion yielded enamel defects by disrupting mitochondria and producing reactive oxygen species in dental epithelium

Genes and Diseases
Developmental defects of enamel are common due to genetic and environmental factors before and after birth. Cdc42, a Rho family small GTPase, regulates prenatal tooth development in mice.
Jinxuan Zheng, Rongcheng Yu, Yiqi Tang, Sihui Su, Sainan Wang, Chenxi Liao, Xuecong Li, Jiabin Liao, Dongsheng Yu, Tingting Ai, Wei Zhao, Vicky Yau, Chufeng Liu, Liping Wu, Yang Cao   +14 more
doaj   +1 more source