Estudo cefalométrico-radiográfico individualizado do posicionamento da maxila em indivíduos com oclusão normal / Individual radiographic-cephalometric study of the position of the maxilla in normal occlusion subjects

AUTOR(ES)

FERNANDO PENTEADO LOPES DA SILVA

DATA DE PUBLICAÇÃO

2006

RESUMO

The position of the maxilla in the skull is subject of investigation by many authors along the time. Transmitting their ideas trough linear and angular measurements, they defined what considered as ideal, normal or acceptable position of the maxilla, relating it in most of the time with the cranial base. By the study of subjects with considered normal occlusion and with good facial balance, it was calculated mean values and standard deviations of some measurements, which were considered as parameters to evaluate all kinds of malocclusions. Considering the divergences found in the literature, the purpose of the present study was to evaluate the vertical and horizontal position of the maxilla and its inclination, in 94 subjects with normal occlusion. Considering this, it was determined some correlations between measurements of the own subjects: OPI-N with OPI-ENA and N-ENA with ENA-ENP. By the strong index of correlation found between these measurements, it was concluded that OPI-N can be take as a reference to establishment of OPI-ENA. In addition, ENA-ENP can be considered a reference to establish the distance N-ENA, so it is possible to determine respectively the position of the maxilla on the horizontal and vertical planes. The inclination of the maxilla, as defined by the angle OPI.ENA.ENP showed a mean value statistically very close of 0o (zero), indicating a strong tendency of the posterior extension of the palatal plane (ENA-ENP) touch the most posterior and inferior region of the occipital bone (OPI point). This was considered an important characteristic of subjects with normal occlusion.

ASSUNTO(S)

oclusão dentária ortodontia maxila individualização do paciente odontologia - teses e dissertações posição da maxila

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