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dc.contributor.CRUESPUniversidade Estadual de Campinaspt
dc.typeArtigo de periódicopt
dc.titleThe effects of local trauma to the enamel-related periodontal tissues in the eruption of the rat incisorpt
dc.contributor.authorMerzel, Jpt
dc.contributor.authorNovaes, PDpt
dc.contributor.authorFurlan, Spt
unicamp.authorUNICAMP, Fac Odontol Piracicaba, Dept Morphol, BR-13414900 Piracicaba, SP, Brazilpt
dc.subjecttooth eruptionpt
dc.subjectrat incisorpt
dc.subjectenamel-related periodontiumpt
dc.subject.wosTooth Eruptionpt
dc.subject.wosRoot Transectionpt
dc.subject.wosDental Folliclept
dc.description.abstractThe periodontal tissues related to enamel (PTE) of the rat incisor comprise a connective tissue derived from the dental follicle and the enamel organ with its successive stages of development. Localized damage to these tissues in rat lower incisors was done surgically in three ways: with an endodontic file introduced into the labial periodontal space through either (i) its basal or (ii) its incisal extremities, or (iii) by the partial removal of the mandibular lower border, at the level of the molar teeth, together with the introduction of an endodontic file into the incisal part of that space. The lesions in the molar region of the PTE produced first a variable period of retarded eruption, and, depending upon their extent or degree were followed by a cessation of the eruptive movement and, in the majority of the operated teeth, a recovery of the normal eruption rate before the end of the experiment (17 weeks after surgery), Access to the PTE through the basal portion of the socket was erratic, but when the tissues were damaged produced similar effects.. Effects on eruption of lesions produced through the alveolar crest were minimal or even absent. Localized injury to the periodontal ligament of either lower or upper incisors did not produce similar effects on tooth eruption. The dental follicle and the enamel organ of teeth of limited growth when their crown is completed are similar to the PTE in the molar region of continuously growing rodent incisors. In teeth of limited growth these tissues play an essential part in the intraosseous stage of eruption. The results here suggest that the PTE may also have a role in the supraosseous stage of eruption, which is continuous in teeth such as rat incisors due to the presence of a continuously functioning odontogenic organ. (C) 2000 Elsevier Science Ltd. All rights
dc.relation.ispartofArchives Of Oral Biologypt_BR
dc.relation.ispartofabbreviationArch. Oral
dc.publisherPergamon-elsevier Science Ltdpt
dc.identifier.citationArchives Of Oral Biology. Pergamon-elsevier Science Ltd, v. 45, n. 4, n. 323, n. 333,
dc.sourceWeb of Sciencept
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