Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Dental Journal |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402012000400021 |
Resumo: | The purpose of this study was to compare the effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors during leveling phase. Twenty-three subjects with Class I and Class II malocclusion were treated with first premolars extraction using preadjusted appliances (MBT 0.022-inch brackets). The leveling phase was performed with stainless steel archwires only. The sample was divided into 2 groups: 14 subjects received active lacebacks (Group 1) and 9 subjects received passive lacebacks (Group 2). Lacebacks were made from 0.008-inch ligature wire. Lateral cephalometric radiographs were taken pre- and post-leveling phase. Student's t-test was applied to determine the differences between pre- and post-leveling mean values and to determine the mean differences between groups. In Group I, the first molars showed a significant mesial movement, whereas no change was observed in Group 2. In both groups, maxillary central incisor crowns moved to lingual side. In conclusion, active laceback produced anchorage loss of maxillary first molars whereas passive laceback did not affect the position of these teeth. Active and passive lacebacks were effective in preventing central incisor proclination. |
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Brazilian Dental Journal |
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Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisorscorrective orthodonticsorthodontic anchorage procedurecephalometryThe purpose of this study was to compare the effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors during leveling phase. Twenty-three subjects with Class I and Class II malocclusion were treated with first premolars extraction using preadjusted appliances (MBT 0.022-inch brackets). The leveling phase was performed with stainless steel archwires only. The sample was divided into 2 groups: 14 subjects received active lacebacks (Group 1) and 9 subjects received passive lacebacks (Group 2). Lacebacks were made from 0.008-inch ligature wire. Lateral cephalometric radiographs were taken pre- and post-leveling phase. Student's t-test was applied to determine the differences between pre- and post-leveling mean values and to determine the mean differences between groups. In Group I, the first molars showed a significant mesial movement, whereas no change was observed in Group 2. In both groups, maxillary central incisor crowns moved to lingual side. In conclusion, active laceback produced anchorage loss of maxillary first molars whereas passive laceback did not affect the position of these teeth. Active and passive lacebacks were effective in preventing central incisor proclination.Fundação Odontológica de Ribeirão Preto2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402012000400021Brazilian Dental Journal v.23 n.4 2012reponame:Brazilian Dental Journalinstname:Fundação Odontológica de Ribeirão Preto (FUNORP)instacron:FUNORP10.1590/S0103-64402012000400021info:eu-repo/semantics/openAccessMoresca,Ricardo CesarVigorito,Julio WilsonDominguez,Gladys CristinaTortamano,AndréMoraes,Danielle RodriguesMoro,AlexandreCorrer,Gisele Mariaeng2012-11-29T00:00:00Zoai:scielo:S0103-64402012000400021Revistahttps://www.scielo.br/j/bdj/https://old.scielo.br/oai/scielo-oai.phpbdj@forp.usp.br||sergio@fosjc.unesp.br1806-47600103-6440opendoar:2012-11-29T00:00Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)false |
dc.title.none.fl_str_mv |
Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors |
title |
Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors |
spellingShingle |
Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors Moresca,Ricardo Cesar corrective orthodontics orthodontic anchorage procedure cephalometry |
title_short |
Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors |
title_full |
Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors |
title_fullStr |
Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors |
title_full_unstemmed |
Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors |
title_sort |
Effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors |
author |
Moresca,Ricardo Cesar |
author_facet |
Moresca,Ricardo Cesar Vigorito,Julio Wilson Dominguez,Gladys Cristina Tortamano,André Moraes,Danielle Rodrigues Moro,Alexandre Correr,Gisele Maria |
author_role |
author |
author2 |
Vigorito,Julio Wilson Dominguez,Gladys Cristina Tortamano,André Moraes,Danielle Rodrigues Moro,Alexandre Correr,Gisele Maria |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Moresca,Ricardo Cesar Vigorito,Julio Wilson Dominguez,Gladys Cristina Tortamano,André Moraes,Danielle Rodrigues Moro,Alexandre Correr,Gisele Maria |
dc.subject.por.fl_str_mv |
corrective orthodontics orthodontic anchorage procedure cephalometry |
topic |
corrective orthodontics orthodontic anchorage procedure cephalometry |
description |
The purpose of this study was to compare the effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors during leveling phase. Twenty-three subjects with Class I and Class II malocclusion were treated with first premolars extraction using preadjusted appliances (MBT 0.022-inch brackets). The leveling phase was performed with stainless steel archwires only. The sample was divided into 2 groups: 14 subjects received active lacebacks (Group 1) and 9 subjects received passive lacebacks (Group 2). Lacebacks were made from 0.008-inch ligature wire. Lateral cephalometric radiographs were taken pre- and post-leveling phase. Student's t-test was applied to determine the differences between pre- and post-leveling mean values and to determine the mean differences between groups. In Group I, the first molars showed a significant mesial movement, whereas no change was observed in Group 2. In both groups, maxillary central incisor crowns moved to lingual side. In conclusion, active laceback produced anchorage loss of maxillary first molars whereas passive laceback did not affect the position of these teeth. Active and passive lacebacks were effective in preventing central incisor proclination. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402012000400021 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402012000400021 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-64402012000400021 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Fundação Odontológica de Ribeirão Preto |
publisher.none.fl_str_mv |
Fundação Odontológica de Ribeirão Preto |
dc.source.none.fl_str_mv |
Brazilian Dental Journal v.23 n.4 2012 reponame:Brazilian Dental Journal instname:Fundação Odontológica de Ribeirão Preto (FUNORP) instacron:FUNORP |
instname_str |
Fundação Odontológica de Ribeirão Preto (FUNORP) |
instacron_str |
FUNORP |
institution |
FUNORP |
reponame_str |
Brazilian Dental Journal |
collection |
Brazilian Dental Journal |
repository.name.fl_str_mv |
Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP) |
repository.mail.fl_str_mv |
bdj@forp.usp.br||sergio@fosjc.unesp.br |
_version_ |
1754204092228435968 |