The effect of hypoxia on the formation of mouse incisor enamel

Archives of Oral Biology
Rivan SidalyAmer Sehic

Abstract

The permanently growing mouse incisors exhibit all stages of tooth development along their inciso-apical axis at any time. Any disturbance or injury of the ameloblasts during enamel formation or maturation may result in permanent defects in the finished enamel since the enamel does not undergo repair or remodeling after formation. In order to increase our understanding of how hypoxia affects enamel formation, we induced severe acute hypoxia in adult mice and observed its effects on the enamel in incisors. Incisors from hypoxic mice were obtained 5 and 49 days after the hypoxic insult. Hypoxic and control incisors were dissected out and observed by scanning electron microscopy (SEM). Incisors were subsequently ground longitudinally or transversely, etched, and observed again by SEM. The nature and position of defects were considered in relation to the configuration and dynamics of the incisors. The effect of hypoxia varied considerably, among mice, among incisors, and among ameloblasts. Affected enamel showed hypoplasia with hypomineralization or hypomineralization without hypoplasia. Vascular endothelial growth factor (VEGF) showed considerably stronger labeling in hypoxic compared to control ameloblasts. The present study demo...Continue Reading

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Citations

Oct 28, 2016·European Journal of Oral Sciences·Sanja PetronijevicTrond S Halstensen
Mar 5, 2021·Frontiers in Cell and Developmental Biology·Eun-Jung KimHan-Sung Jung
Sep 22, 2018·Archives of Oral Biology·Amela TulekAmer Sehic
Jun 25, 2021·European Archives of Paediatric Dentistry : Official Journal of the European Academy of Paediatric Dentistry·E GarotN A Lygidakis
Oct 21, 2021·European Archives of Paediatric Dentistry : Official Journal of the European Academy of Paediatric Dentistry·N A LygidakisF S L Wong
Oct 31, 2021·European Archives of Paediatric Dentistry : Official Journal of the European Academy of Paediatric Dentistry·A J SchmalfussI J Brusevold

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