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Björk-Jarabak cephalometric analysis on CBCT synthesized cephalograms with different dentofacial sagittal skeletal patterns
Rodriguez-Cardenas, Yalil Augusto; Arriola-Guillen, Luis Ernesto; Flores-Mir, Carlos.
  • Rodriguez-Cardenas, Yalil Augusto; Universidad Peruana Cayetano Heredia.
  • Arriola-Guillen, Luis Ernesto; Universidad Peruana Cayetano Heredia.
  • Flores-Mir, Carlos; Universidad Peruana Cayetano Heredia.
Dental press j. orthod. (Impr.) ; 19(6): 46-53, Nov-Dec/2014. tab, graf
Article in English | LILACS | ID: lil-732440
ABSTRACT
OBJECTIVE: The objective of this study was to evaluate the Björk and Jabarak cephalometric analysis generated from cone-beam computed tomography (CBCT) synthesized lateral cephalograms in adults with different sagittal skeletal patterns. METHODS: The sample consisted of 46 CBCT synthesized cephalograms obtained from patients between 16 and 40 years old. A Björk and Jarabak cephalometric analysis among different sagittal skeletal classes was performed. Analysis of variance (ANOVA), multiple range test of Tukey, Kruskal-Wallis test, and independent t-test were used as appropriate. RESULTS: In comparison to the standard values: Skeletal Class III had increased gonial and superior gonial angles (P < 0.001). This trend was also evident when sex was considered. For Class I males, the sella angle was decreased (P = 0.041), articular angle increased (P = 0.027) and gonial angle decreased (P = 0.002); whereas for Class III males, the gonial angle was increased (P = 0.012). For Class I females, the articular angle was increased (P = 0.029) and the gonial angle decreased (P = 0.004). Björk's sum and Björk and Jabarak polygon sum showed no significant differences. The facial biotype presented in the three sagittal classes was mainly hypodivergent and neutral. CONCLUSIONS: In this sample, skeletal Class III malocclusion was strongly differentiated from the other sagittal classes, specifically in the mandible, as calculated through Björk and Jarabak analysis. .
RESUMO
OBJETIVO: o objetivo deste estudo foi avaliar a análise cefalométrica de Björk-Jarabak realizada com base em telerradiografias sintetizadas a partir de tomografia computadorizada de feixe cônico (TCFC) em adultos com diferentes padrões esqueléticos sagitais. MÉTODOS: a amostra foi composta de 46 telerradiografias sintetizadas a partir de TCFC obtidas de pacientes entre 16 e 40 anos de idade. A análise cefalométrica de Björk-Jarabak foi conduzida entre as diferentes classes esqueléticas sagitais. Análise de variância (ANOVA), teste de Tukey, de Kruskal-Wallis e teste t independente também foram realizados. RESULTADOS: em comparação a valores padrão, a má oclusão de Classe III esquelética apresentava ângulos goníacos aumentados (p < 0,001). Essa tendência também foi evidente quando o sexo dos pacientes foi considerado. Pacientes Classe I do sexo masculino tiveram o ângulo sela diminuído (p = 0,041), o ângulo articular aumentado (p = 0,027) e o ângulo goníaco também diminuído (p = 0,002). Já os pacientes Classe III tiveram o ângulo goníaco aumentado (p = 0,012). Pacientes Classe I do sexo feminino tiveram o ângulo articular aumentado (p = 0,029) e o ângulo goníaco diminuído (p = 0,004). A soma de Björk e a soma dos polígonos de Björk-Jarabak não revelaram diferenças significativas. O biótipo facial presente nas três classes sagitais foi hipodivergente e neutro. CONCLUSÕES: na amostra do presente estudo, a má oclusão esquelética de Classe III foi fortemente diferenciada de outras classes sagitais, ...
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Full text: Available Index: LILACS (Americas) Main subject: Cephalometry / Cone-Beam Computed Tomography / Malocclusion Limits: Adolescent / Adult / Female / Humans / Male Language: English Journal: Dental press j. orthod. (Impr.) Journal subject: Orthodontics Year: 2014 Type: Article Affiliation country: Peru

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Full text: Available Index: LILACS (Americas) Main subject: Cephalometry / Cone-Beam Computed Tomography / Malocclusion Limits: Adolescent / Adult / Female / Humans / Male Language: English Journal: Dental press j. orthod. (Impr.) Journal subject: Orthodontics Year: 2014 Type: Article Affiliation country: Peru