1999
DOI: 10.1111/j.1600-9657.1999.tb00743.x
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The effect of mechanical trauma on the tooth germ of rat molars at various developmental stages: a histopathological study

Abstract: Intrusive trauma was experimentally applied to the tooth germ at different developmental stages in the rat first molar. The tooth germ at the earliest (postnatal day 1, initiating stage of enamel matrix formation) and the latest (postnatal day 10, calcifying stage of preformed enamel matrix) developmental stages studied showed localized enamel hypoplasia as a direct sequela of trauma. The tooth germs in which enamel matrix was rapidly thickening (postnatal days 3, 5, 7) and had not yet started to calcify showe… Show more

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Cited by 14 publications
(11 citation statements)
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“…It has long been known that severe dental trauma may result in excessive formation of hard tissue in the pulp [1,19,30]. This also occurred in the advanced stages in the present study, where irregular and regular dentin were formed and filled a large part of the pulpal cavity.…”
Section: Discussionsupporting
confidence: 58%
“…It has long been known that severe dental trauma may result in excessive formation of hard tissue in the pulp [1,19,30]. This also occurred in the advanced stages in the present study, where irregular and regular dentin were formed and filled a large part of the pulpal cavity.…”
Section: Discussionsupporting
confidence: 58%
“…[6] in developing tooth germ of Sprague–Dawley rats with a dental k file showed localized enamel hypoplasia as a direct sequelae of trauma to the tooth germ, dislocation Results in ankylosis as a indirect effect of trauma.…”
Section: Discussionmentioning
confidence: 99%
“…The period from P1 to P10 is crucial for the development of the tooth germ. At this stage, the molars have minimal mineralization and are still surrounded by the dental follicle . In this period (e.g., P9 rats), the tooth structures can be recognized by VIS bright‐field imaging.…”
Section: Discussionmentioning
confidence: 99%