Mandibular anterior bony support and incisor crowding: Is there a relationship?

  • Eser Sahibi İLKNUR VELİ
  • Tür Makale
  • Yayın Tarihi 2012
  • Yayıncı AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS
  • Dergi Adı AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS 142, ( 5 ), pp.645 - 653
  • Tek Biçim Adres Http://hdl.handle.net/11469/128
  • Konu Başlıkları Mandibular incisors

INTRODUCTION:
The aim of this study was to test the null hypothesis that increased irregularity of the mandibular incisors is associated with a reduction in the alveolar support on cone-beam computed tomographic sections.
METHODS:
From a sample of 1100 digital volumetric tomographs, 125 tomographs of subjects with Class I malocclusion (mean age, 21.6 ± 4.8 years) were selected for this study. An irregularity index was used to categorize these tomographs as having mild, moderate, or severe crowding. All tomographs were taken by using an iCAT (Imaging Sciences International, Hatfield, Pa) imaging device. The following parameters were measured on the sections corresponding to the 4 mandibular incisors with the iCAT software: height, thickness, and area of the entire symphysis; height, thickness, and area of the cancellous bone of the symphysis; and distance between the vestibular and lingual cortices. For the statistical evaluation, independent samples t test, analysis of variance, and the Tukey HSD test were used at an alpha level 0.05. The Pearson correlation coefficient and a simple linear regression were calculated to determine the relationship between mandibular anterior bony support and incisor crowding.
RESULTS:
Almost all mandibular anterior bone measurements were greater in the male subjects than in the female subjects (height of the mandibular symphysis, P <0.001; cancellous bone height, P <0.001). Female subjects with mild crowding had higher values for cancellous bone height (P = 0.025) and vestibular cancellous bone thickness (P = 0.004) than did those with severe crowding. However, no differences were detected in the male subjects. Additionally, significant correlations were determined between incisor crowding and thickness of the mandibular symphysis, cancellous bone thickness, and the vestibular part of cancellous bone thickness in female subjects.
CONCLUSIONS:
Significant relationships were found between the measures of mandibular incisor crowding and basal bone dimensions in female subjects. Except for the vestibular part of cancellous bone thickness, all mandibular incisor bone measurements were greater in the male subjects than in the female subjects.

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Eser Adı
(dc.title)
Mandibular anterior bony support and incisor crowding: Is there a relationship?
Eser Sahibi
(dc.contributor.author)
İLKNUR VELİ
Yayın Tarihi
(dc.date.issued)
2012
Diğer Yazarlar
(dc.contributor.authors)
AHMET YAĞCI
Diğer Yazarlar
(dc.contributor.authors)
TANCAN UYSAL
Diğer Yazarlar
(dc.contributor.authors)
TÖRÜN ÖZER
Diğer Yazarlar
(dc.contributor.authors)
AHMET ÖZTÜRK
Yayıncı
(dc.publisher)
AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS
Tür
(dc.type)
Makale
Açıklama
(dc.description)
.
Özet
(dc.description.abstract)
INTRODUCTION: The aim of this study was to test the null hypothesis that increased irregularity of the mandibular incisors is associated with a reduction in the alveolar support on cone-beam computed tomographic sections. METHODS: From a sample of 1100 digital volumetric tomographs, 125 tomographs of subjects with Class I malocclusion (mean age, 21.6 ± 4.8 years) were selected for this study. An irregularity index was used to categorize these tomographs as having mild, moderate, or severe crowding. All tomographs were taken by using an iCAT (Imaging Sciences International, Hatfield, Pa) imaging device. The following parameters were measured on the sections corresponding to the 4 mandibular incisors with the iCAT software: height, thickness, and area of the entire symphysis; height, thickness, and area of the cancellous bone of the symphysis; and distance between the vestibular and lingual cortices. For the statistical evaluation, independent samples t test, analysis of variance, and the Tukey HSD test were used at an alpha level 0.05. The Pearson correlation coefficient and a simple linear regression were calculated to determine the relationship between mandibular anterior bony support and incisor crowding. RESULTS: Almost all mandibular anterior bone measurements were greater in the male subjects than in the female subjects (height of the mandibular symphysis, P <0.001; cancellous bone height, P <0.001). Female subjects with mild crowding had higher values for cancellous bone height (P = 0.025) and vestibular cancellous bone thickness (P = 0.004) than did those with severe crowding. However, no differences were detected in the male subjects. Additionally, significant correlations were determined between incisor crowding and thickness of the mandibular symphysis, cancellous bone thickness, and the vestibular part of cancellous bone thickness in female subjects. CONCLUSIONS: Significant relationships were found between the measures of mandibular incisor crowding and basal bone dimensions in female subjects. Except for the vestibular part of cancellous bone thickness, all mandibular incisor bone measurements were greater in the male subjects than in the female subjects.
Kayıt Giriş Tarihi
(dc.date.accessioned)
10.06.2014
Açık Erişim Tarihi
(dc.date.available)
2014-06-10
Yayın Dili
(dc.language.iso)
eng
Konu Başlıkları
(dc.subject)
Mandibular incisors
Atıf için Künye
(dc.identifier.citation)
Yagci, A., Ozer, T., Veli, I., Uysal, T., Ozturk, A. (2012). Mandibular anterior bony support and incisor crowding: Is there a relationship?. Ajo-Do, 142 (5), 645–653. DOI: 10.1016/j.ajodo.2012.05.017
ISSN
(dc.identifier.issn)
0889-5406
Yayının ilk sayfa sayısı
(dc.identifier.startpage)
645
Yayının son sayfa sayısı
(dc.identifier.endpage)
653
Dergi Adı
(dc.relation.journal)
AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS
Dergi Sayısı
(dc.identifier.issue)
5
Dergi Cilt
(dc.identifier.volume)
142
Veritabanı
(dc.source.database)
Hiçbiri
Haklar
(dc.rights)
Open access
Tek Biçim Adres
(dc.identifier.uri)
Http://hdl.handle.net/11469/128
Analizler
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