2021
DOI: 10.3390/jdb9010008
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Timing of Mouse Molar Formation Is Independent of Jaw Length Including Retromolar Space

Abstract: For humans and other mammals to eat effectively, teeth must develop properly inside the jaw. Deciphering craniodental integration is central to explaining the timely formation of permanent molars, including third molars which are often impacted in humans, and to clarifying how teeth and jaws fit, function and evolve together. A factor long-posited to influence molar onset time is the jaw space available for each molar organ to form within. Here, we tested whether each successive molar initiates only after a mi… Show more

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Cited by 6 publications
(13 citation statements)
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References 43 publications
(75 reference statements)
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“…At P0 (birth), the second third of the M1 crown began to mineralize, the first third of the M2 crown was starting to mineralize, and M3 had not yet initiated. The timing of these molar formation stages for both soft diet groups was consistent with that of a normal control (Ko et al, 2021).…”
Section: Resultssupporting
confidence: 78%
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“…At P0 (birth), the second third of the M1 crown began to mineralize, the first third of the M2 crown was starting to mineralize, and M3 had not yet initiated. The timing of these molar formation stages for both soft diet groups was consistent with that of a normal control (Ko et al, 2021).…”
Section: Resultssupporting
confidence: 78%
“…Coronal and sagittal planes were used to compare developing molars to classic stages of mammalian tooth organ initiation and morphogenesis: placode, bud, early/late cap, and early/late bell (Jernvall & Thesleff, 2012). As a reference for timing of mouse molar formation, we used a recent high‐resolution 3D study of wildtype mouse odontogenesis from E10 to P32 (Ko et al, 2021), where M1, M2, and M3 tooth organs begin to form by E12, E14, and P4, respectively. EVA and JCB independently staged the development of all visible molar organs, comparing results to ensure accuracy, precision, and replicability.…”
Section: Methodsmentioning
confidence: 99%
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“…This paper is the first evidence that R-spondin signaling promotes the normal process of odontogenesis in mammals. Ko et al [ 8 ] investigated the mechanism by which teeth and jaws fit, function, and evolve together. They tested whether molar teeth only begin to grow once the jaw develops enough space from the previously erupted tooth.…”
mentioning
confidence: 99%
“…La etapa de iniciación y morfogénesis de la corona dental comienza con la señalización de diversos factores de crecimiento (e.g., SHH, BMP, FGF), los cuales regulan la proliferación del epitelio en torno de un centro de señalización temprana en la lámina dental, dando lugar a la formación de una yema (primera etapa). En este sentido, la yema dental puede verse como una consecuencia de la lámina dental (considerada por algunos, como un estadío inicial previo al de yema) que luego crece y atraviesa por un proceso de morfogénesis hasta el estadio de órgano (Jernvall y Thesleff, 2000;Zhao et al, 2000;Catón y Tucker, 2009;Balic y Thesleff, 2015;Matalova et al, 2015;Morita et al, 2020;Ko et al, 2021).…”
Section: Desarrollo De La Dentición Heterodonteunclassified