Effects of rapid-slow maxillary expansion on the dentofacial structures

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dc.authorid0000-0001-7862-2983
dc.contributor.authorKılıç, Nihat
dc.contributor.authorOktay, Hüsamettin
dc.date.accessioned2020-05-20T12:40:03Z
dc.date.available2020-05-20T12:40:03Z
dc.date.issued2010
dc.departmentİstanbul Medipol Üniversitesi, Diş Hekimliği Fakültesi, Ortodonti Ana Bilim Dalı
dc.description.abstractBackground: To date, no study has determined if rapid followed by slow maxillary expansion (also termed 'semi-rapid' expansion) has the same effects on the dentofacial skeleton as rapid maxillary expansion.Objective: To determine the vertical and sagittal changes in the facial skeleton during and following rapid then slow maxillary expansion (R-SME).Methods: Bonded maxillary expansion appliances were used to separate the maxillae over six days by activating the midline screws twice a day. The screws were then activated three times a week until sufficient expansion was obtained (Mean: 3.4 months) and used as retainers for six months. Cephalometric measurements at the start of expansion (T1), end of expansion (T2) and end of retention (T3) were compared with paired t-tests. Pearson correlation coefficients were used to determine the associations between the expansion (dental and skeletal) and the cephalometric changes.Results: The maxillae moved forward a small, but statistically significant, extent during expansion. The upper molars were extruded and the mandible 'rotated' downward and backward. Although the vertical height of the facial skeleton (SN/GoMe, S-Go, N-Me, ANS-Me) increased significantly during expansion, the changes were small and highly variable. Some dimensions (SN/GoMe) relapsed during retention, while others (S-Go, N-Me) increased.Conclusions: Rapid then slow maxillary expansion caused a small, but statistically significant, forward movement of the upper facial skeleton, a small downward and backward rotation of the mandible and a small increase in face height. The changes were similar to those found during rapid maxillary expansion. (Aust Orthod J 2010; 178-183)
dc.identifier.citationKılıç, N. ve Oktay, H. (2010). Effects of rapid-slow maxillary expansion on the dentofacial structures. Australasian Orthodontic Journal, 26(2), 178-183.
dc.identifier.endpage183
dc.identifier.issn0587-3908
dc.identifier.issue2
dc.identifier.scopusqualityN/A
dc.identifier.startpage178
dc.identifier.urihttps://hdl.handle.net/20.500.12511/5227
dc.identifier.volume26
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherAustralian Society of Orthodontists Inc.
dc.relation.ispartofAustralasian Orthodontic Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectOrthodontic Treatment
dc.subjectPalatal Expansion
dc.subjectMixed Dentition
dc.subjectDental Changes
dc.subjectSkeletal
dc.subjectInclination
dc.subjectAdolescents
dc.subjectAppliances
dc.subjectExpanders
dc.subjectChildren
dc.titleEffects of rapid-slow maxillary expansion on the dentofacial structures
dc.typeArticle

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