Influence of premolar extractions on the facial profile evaluated by the Holdaway analysis
PURPOSE: This retrospective study aimed at assessing patients treated with extraction of premolars through cephalometry in lateral teleradiography, comparing the effect of different tooth extraction protocols on the facial profile. METHODS: For this study, 87 patients (31 boys and 56 girls) were selected from the private practices of three dentists certified by the Brazilian Board of Orthodontics and Facial Orthopedics. These patients were treated with fixed edgewise appliance and divided into three groups, according to the sequence in which premolars were extracted "Group 40" comprised 22 patients treated with extractions of the first two superior premolars, adopted as the control group; "Group 44" comprised 43 patients treated with extractions of the four first premolars; and "Group 45" comprised 22 patients treated with extractions of first superior premolars and second inferior premolars. The Holdaway analysis was used to quantify and compare the group profiles before and after treatment. RESULTS: Student's t-tests showed a profile improvement in all groups. When groups were compared, ANOVA showed that only the Inferior sulcus to the H line showed differences in incremental changes resulting from the treatment. Group 44 showed a significantly higher difference than Group 40. CONCLUSION: We conclude that the protocols produce similar facial appearances.
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Pontifícia Universidade Católica do Rio Grande do Sul
2011
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oai:scielo:S1980-652320110001000072011-08-22Influence of premolar extractions on the facial profile evaluated by the Holdaway analysisAllgayer,SusianeLima,Eduardo M. Santayana deMezomo,Maurício Barbieri Dental extraction premolar tooth corrective orthodontics PURPOSE: This retrospective study aimed at assessing patients treated with extraction of premolars through cephalometry in lateral teleradiography, comparing the effect of different tooth extraction protocols on the facial profile. METHODS: For this study, 87 patients (31 boys and 56 girls) were selected from the private practices of three dentists certified by the Brazilian Board of Orthodontics and Facial Orthopedics. These patients were treated with fixed edgewise appliance and divided into three groups, according to the sequence in which premolars were extracted "Group 40" comprised 22 patients treated with extractions of the first two superior premolars, adopted as the control group; "Group 44" comprised 43 patients treated with extractions of the four first premolars; and "Group 45" comprised 22 patients treated with extractions of first superior premolars and second inferior premolars. The Holdaway analysis was used to quantify and compare the group profiles before and after treatment. RESULTS: Student's t-tests showed a profile improvement in all groups. When groups were compared, ANOVA showed that only the Inferior sulcus to the H line showed differences in incremental changes resulting from the treatment. Group 44 showed a significantly higher difference than Group 40. CONCLUSION: We conclude that the protocols produce similar facial appearances.info:eu-repo/semantics/openAccessPontifícia Universidade Católica do Rio Grande do SulRevista Odonto Ciência v.26 n.1 20112011-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-65232011000100007en10.1590/S1980-65232011000100007 |
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Allgayer,Susiane Lima,Eduardo M. Santayana de Mezomo,Maurício Barbieri |
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Allgayer,Susiane Lima,Eduardo M. Santayana de Mezomo,Maurício Barbieri Influence of premolar extractions on the facial profile evaluated by the Holdaway analysis |
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Allgayer,Susiane Lima,Eduardo M. Santayana de Mezomo,Maurício Barbieri |
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Allgayer,Susiane |
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Influence of premolar extractions on the facial profile evaluated by the Holdaway analysis |
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Influence of premolar extractions on the facial profile evaluated by the Holdaway analysis |
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Influence of premolar extractions on the facial profile evaluated by the Holdaway analysis |
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Influence of premolar extractions on the facial profile evaluated by the Holdaway analysis |
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Influence of premolar extractions on the facial profile evaluated by the Holdaway analysis |
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influence of premolar extractions on the facial profile evaluated by the holdaway analysis |
description |
PURPOSE: This retrospective study aimed at assessing patients treated with extraction of premolars through cephalometry in lateral teleradiography, comparing the effect of different tooth extraction protocols on the facial profile. METHODS: For this study, 87 patients (31 boys and 56 girls) were selected from the private practices of three dentists certified by the Brazilian Board of Orthodontics and Facial Orthopedics. These patients were treated with fixed edgewise appliance and divided into three groups, according to the sequence in which premolars were extracted "Group 40" comprised 22 patients treated with extractions of the first two superior premolars, adopted as the control group; "Group 44" comprised 43 patients treated with extractions of the four first premolars; and "Group 45" comprised 22 patients treated with extractions of first superior premolars and second inferior premolars. The Holdaway analysis was used to quantify and compare the group profiles before and after treatment. RESULTS: Student's t-tests showed a profile improvement in all groups. When groups were compared, ANOVA showed that only the Inferior sulcus to the H line showed differences in incremental changes resulting from the treatment. Group 44 showed a significantly higher difference than Group 40. CONCLUSION: We conclude that the protocols produce similar facial appearances. |
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Pontifícia Universidade Católica do Rio Grande do Sul |
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2011 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-65232011000100007 |
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