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1.
Dental press j. orthod. (Impr.) ; 25(4): 75-84, July-Aug. 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1133674

ABSTRACT

ABSTRACT Adult patients with anterior open bite and hyperdivergent retrognathic phenotype demand complex treatments, as premolar extractions, molar intrusion or orthognathic surgery. In the present clinical case, a young adult patient without significant growth, with Class I and anterior open bite, was treated with four premolar extractions. The therapeutic result shows good intercuspation, good facial esthetic, good function balance, and stability in a two-year post-fixed treatment follow-up.


RESUMO Pacientes adultos com mordida aberta anterior e fenótipo hiperdivergente retrognata demandam tratamentos complexos, com extrações de pré-molares, intrusão de molares ou cirurgia ortognática. No presente caso clínico, uma jovem adulta sem potencial significativo de crescimento, apresentando Classe I e mordida aberta anterior, foi tratada com extrações de quatro primeiros pré-molares. O resultado terapêutico alcançou boa intercuspidação, boa estética facial e bom equilíbrio funcional, e mostrou-se estável depois de dois anos da remoção do aparelho fixo.


Subject(s)
Humans , Young Adult , Open Bite , Open Bite/therapy , Orthodontic Anchorage Procedures , Orthognathic Surgical Procedures , Phenotype , Tooth Movement Techniques , Cephalometry
2.
Rev. Fac. Odontol. Univ. Antioq ; 23(2): 225-239, jun. 2012. graf, tab
Article in English | LILACS | ID: lil-641189

ABSTRACT

Introducción: el objetivo del estudio fue determinar y comparar cefalométricamente la variación de la dimensión vertical dentoalveolar posterior en pacientes tratados ortodóncicamente con y sin extracciones de primeros bicúspides en maloclusiones clases I y II y establecer su relación con el indicador de displasia anteroposterior (APDI). Métodos: 76 pacientes de la Fundación CIEO, entre 22 y 45 años, con TeleRx lateral de cráneo pre- (T1) y postratamiento (T2) de ortodoncia, clasificados esqueléticamente (APDI) y tipo de tratamiento hecho, independientemente del sexo, conformando cuatro grupos: clase I con exodoncias y sin exodoncias, clase II conexodoncias y sin exodoncias. La dimensión vertical dentoalveolar posterior se midió linealmente y se analizó estadísticamente su variaciónentre las maloclusiones, así como la correlación múltiple entre las alturas dentoalveolares y APDI en T1 y T2. Resultados: el análisis intragrupo, evidenció el aumento significativo entre la dimensión vertical dentoalveolar posterior en clases I y II con extracciones en T1 y T2, a nivel del segundo premolar inferior (5i) y segundo molar superior (7s), respectivamente. El análisis intergrupo, mostró aumento significativo al comparar la dimensión vertical dentoalveolar posterior, según la clasificación esquelética en tratamientos con extracciones a nivel del segundo premolar (5s), primer molar (6s) y segundo molar (7s) superiores y primer molar (6i) inferior. Conclusiones: se encontró aumento en la dimensión vertical dentoalveolar posterior en todos los grupos en T1 y T2, siendo significativo en los grupos clases I y IIcon exodoncias de primeros bicúspides pero sin evidenciar cambios en la clasificación esquelética (APDI).


Introduction: the purpose of this study was to determine and to cephalometrically compare the variation of posterior dentoalveolar vertical dimension in orthodontic patients treated with and without extraction of first premolars in Class I and Class IImalocclusions and to establish its correlation by means of the Anteroposterior Dysplasia Indicator (APDI). Mehods: pre (T1) and post(T2) treatment lateral cephalograms of 76 patients from Fundación CIEO, aged 22 to 45 years, were skeletally classified according to APDI and the type of treatment received, regardless of gender, forming four groups: Class I with and without extractions, and Class II with and without extractions. The posterior dentoalveolar vertical dimension was calculated with linear measurements and its variationamong the malocclusion groups was statistically analyzed; also, a multiple correlation analysis between dentoalveolar heights and APDIwas performed at T1 and T2. Results: the intragroup analysis showed a significant increase of posterior dentoalveolar vertical dimensionat T1 and T2 in both Class I and Class II groups with first premolar extractions at the lower second premolar (5i) and upper second molar (7s), respectively. The intergroup analysis showed a significant increase in posterior dentoalveolar vertical dimension, according to skeletal malocclusion class, in treatments with first premolar extractions, at the upper second premolar (5s), upper first molar (6s), upper second molar (7s), and lower first molar (6i). Conclusions: there was an increase of posterior dentoalveolar vertical dimension at T1 and T2 inall the groups, being statistically significant in Class I and Class II patients treated with first premolar extractions without altering theskeletal classification (APDI).


Subject(s)
Humans , Malocclusion , Orthodontics , Surgery, Oral , Bicuspid
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