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Article: The relationship between eruption and length of mandibular incisors in young rats

TitleThe relationship between eruption and length of mandibular incisors in young rats
Authors
KeywordsImpeded
Incisors
Time factor
Tooth eruption
Unimpeded
Issue Date2003
PublisherMedical Science International Publishing. The Journal's web site is located at http://www.medscimonit.com
Citation
Medical Science Monitor, 2003, v. 9 n. 1, p. BR47-BR53 How to Cite?
AbstractBackground: Rat incisor teeth exhibit continuous growth, hence they have frequently been used to study the eruption process. The aim of our study was to investigate changes in the eruption rate of impeded and unimpeded rat incisors and to determine if any relationship existed between eruption rate and length of the clinical crown. Material/Methods: An image analysis technique was used to measure the length of the mandibular incisors of 23 young female Sprague-Dawley rats, aged 7 to 8 weeks. Over a four-week period, the mandibular right incisors of the 11 rats in the experimental group were shortened every two or three days. Another group of 12 rats served as the control. Results: The mean unimpeded eruption rate was 1.0±0.1 mm/day, while the impeded eruption rate was 0.6±0.1 mm/day. On day 2, the eruption rate of the unimpeded mandibular incisors accelerated to 163.9% when compared to the controls. The impeded mandibular incisors increased in length by 8.8% and 12.1% for the experimental and control groups respectively. All inverse relationship was identified between the eruption rate and the length of clinical crown of the impeded mandibular incisors, while the unimpeded eruption rate was unrelated to the length difference between the left and right incisors if the length difference exceeded 0.5 mm after accelerated eruption. Conclusions: It was found that the mandibular incisors of young rats need to be shortened every two days in order to study unimpeded tooth eruption, and the shorter the tooth is cut the higher the rate of eruption.
Persistent Identifierhttp://hdl.handle.net/10722/154226
ISSN
2012 Impact Factor: 1.358
2015 SCImago Journal Rankings: 0.512
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLaw, KTen_US
dc.contributor.authorLee, CKen_US
dc.contributor.authorKing, NMen_US
dc.contributor.authorRabie, ABMen_US
dc.date.accessioned2012-08-08T08:24:04Z-
dc.date.available2012-08-08T08:24:04Z-
dc.date.issued2003en_US
dc.identifier.citationMedical Science Monitor, 2003, v. 9 n. 1, p. BR47-BR53en_US
dc.identifier.issn1234-1010en_US
dc.identifier.urihttp://hdl.handle.net/10722/154226-
dc.description.abstractBackground: Rat incisor teeth exhibit continuous growth, hence they have frequently been used to study the eruption process. The aim of our study was to investigate changes in the eruption rate of impeded and unimpeded rat incisors and to determine if any relationship existed between eruption rate and length of the clinical crown. Material/Methods: An image analysis technique was used to measure the length of the mandibular incisors of 23 young female Sprague-Dawley rats, aged 7 to 8 weeks. Over a four-week period, the mandibular right incisors of the 11 rats in the experimental group were shortened every two or three days. Another group of 12 rats served as the control. Results: The mean unimpeded eruption rate was 1.0±0.1 mm/day, while the impeded eruption rate was 0.6±0.1 mm/day. On day 2, the eruption rate of the unimpeded mandibular incisors accelerated to 163.9% when compared to the controls. The impeded mandibular incisors increased in length by 8.8% and 12.1% for the experimental and control groups respectively. All inverse relationship was identified between the eruption rate and the length of clinical crown of the impeded mandibular incisors, while the unimpeded eruption rate was unrelated to the length difference between the left and right incisors if the length difference exceeded 0.5 mm after accelerated eruption. Conclusions: It was found that the mandibular incisors of young rats need to be shortened every two days in order to study unimpeded tooth eruption, and the shorter the tooth is cut the higher the rate of eruption.en_US
dc.languageengen_US
dc.publisherMedical Science International Publishing. The Journal's web site is located at http://www.medscimonit.comen_US
dc.relation.ispartofMedical Science Monitoren_US
dc.subjectImpeded-
dc.subjectIncisors-
dc.subjectTime factor-
dc.subjectTooth eruption-
dc.subjectUnimpeded-
dc.subject.meshAnimalsen_US
dc.subject.meshBody Weighten_US
dc.subject.meshFemaleen_US
dc.subject.meshIncisor - Physiologyen_US
dc.subject.meshMandible - Physiologyen_US
dc.subject.meshModels, Anatomicen_US
dc.subject.meshRatsen_US
dc.subject.meshRats, Sprague-Dawleyen_US
dc.subject.meshTime Factorsen_US
dc.subject.meshTooth Eruptionen_US
dc.titleThe relationship between eruption and length of mandibular incisors in young ratsen_US
dc.typeArticleen_US
dc.identifier.emailKing, NM:hhdbknm@hkucc.hku.hken_US
dc.identifier.emailRabie, ABM:rabie@hku.hken_US
dc.identifier.authorityKing, NM=rp00006en_US
dc.identifier.authorityRabie, ABM=rp00029en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid12552237-
dc.identifier.scopuseid_2-s2.0-0037274298en_US
dc.identifier.hkuros76126-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037274298&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume9en_US
dc.identifier.issue1en_US
dc.identifier.spageBR47en_US
dc.identifier.epageBR53en_US
dc.identifier.isiWOS:000208446000008-
dc.publisher.placePolanden_US
dc.identifier.scopusauthoridLaw, KT=7202563070en_US
dc.identifier.scopusauthoridLee, CK=14527349900en_US
dc.identifier.scopusauthoridKing, NM=7201762850en_US
dc.identifier.scopusauthoridRabie, ABM=7007172734en_US

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