Correlation between mandibular incisor crown morphologic index and postretention stability.

Marcos Roberto de Freitas; Renata Cristina Faria Ribeiro de Castro; Guilherme Janson; Karina Maria Salvatore Freitas; José Fernando Castanha Henriques

doi:10.1016/j.ajodo.2005.10.019

PubMed · 16627185

Correlation between mandibular incisor crown morphologic index and postretention stability.

Marcos Roberto de Freitas·Renata Cristina Faria Ribeiro de Castro·Guilherme Janson·Karina Maria Salvatore Freitas·José Fernando Castanha Henriques

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Abstract

INTRODUCTION: Considering postretention stability as a result of successful orthodontic treatment, we aimed to verify the influence of mandibular-incisor-crown morphology in the relapse of mandibular anterior crowding. METHODS: The sample comprised 56 white subjects of both sexes with Class I and Class II malocclusions at pretreatment, treated with extraction of 4 first premolars and edgewise mechanics. No patient underwent interproximal stripping during or after treatment. Mean pretreatment age was 13.23 years. Mean treatment time was 2.11 years, and mean posttreatment evaluation time was 5.12 years. Mandibular anterior crowding was measured with the Little irregularity index, and the mesiodistal and buccolingual proportion of the mandibular incisor crowns was measured with the Peck and Peck index. The measurements were obtained from dental casts at the pretreatment, posttreatment, and postretention stages. The Pearson correlation coefficient was calculated to determine the correlation between mandibular-incisor-crown morphology and the amount of postretention-crowding relapse. RESULTS: The mandibular-incisor-crown morphologic index was not significantly correlated with the amount of mandibular-anterior-crowding relapse. CONCLUSIONS: Mandibular-incisor-crown morphology is not correlated with the amount of mandibular-anterior-crowding relapse.

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Adolescent Algorithms Female Humans Incisor Male Malocclusion Mandible Models, Dental Odontometry Orthodontic Retainers Recurrence Tooth Crown Journal Article Validation Study

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Marcos Roberto de Freitas, Renata Cristina Faria Ribeiro de Castro, Guilherme Janson, Karina Maria Salvatore Freitas, José Fernando Castanha Henriques. 2006. Correlation between mandibular incisor crown morphologic index and postretention stability.. https://doi.org/10.1016/j.ajodo.2005.10.019

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