Navegando por Palavras-chave "Asymmetry"

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    Asymmetry of Human Skull Base During Growth
    (Soc Chilena Anatomia, 2011-01-01) Russo, Priscilla Perez [UNIFESP]; Smith, Ricardo Luiz [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Knowledge about human skull asymmetry in normal dry specimens is useful as a parameter for medical and dentistry practice. Skull base was investigated with the objective to validate the method of indirect measurement with digital pictures and to evaluate the degree of asymmetry from human skull base in different ages. We analyzed 176 normal identified human skulls, divided by age in the following groups: Fetuses, newborn, children and adults. Measures were taken from a central point: pharyngeal tubercle and 4 lateral points: foramen ovale, foramen spinosum, carotid canal and stylomastoid foramen using digital biometry after a comparative validation with directed method performed with caliper. Results were presented as asymmetry indexes and data were expressed as percentage. The digital method presented validity in relation to the direct method with caliper. The skulls in all age groups presented asymmetry. The smallest asymmetry index was 2.6% and the largest 6.6%. In the literature, there are no patterns for defined values of asymmetry in normal skulls. The asymmetry of the foramina related to midline was verified in the whole sample and was considered as normal corresponding to an average asymmetry index of 4%. In this study we also observed that in most of the measures there was prevalence of the right side over the left side.
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    Biometria e assimetria do palato ósseo humano em diferentes grupos etários
    (Universidade Federal de São Paulo (UNIFESP), 2006-01-01) Moreira, Rafael Saviolo [UNIFESP]; Smith, Ricardo Luiz [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    The purpose of this study was to evaluate hard palate asymmetry during development. The palates of 248 dry skulls were photographed and the digital images were processed with software. The skulls were divided in 7 groups: fetuses, newborns, infants, children, adolescents, adults and aged. Linear measures were obtained from great palatine foramen (GPF) to incisive fossa (INC) and to posterior nasal spine (PNS). Angular measures were obtained from the former landmarks plus the point on sutures intersection between maxillary and palatine bones (SR). Asymmetry was evaluated intra and inter-groups. All skulls showed some degree of right-left asymmetry in the hard palate. Regardless of hard palate asymmetry, none of the right-left side differences was statistically significant. An asymmetry index was used for inter-groups assessment. From fetuses up to aged group, none of the asymmetry index means were statistically different. The posterior part of palate (PNS x GPF) measures were more asymmetric than the anterior part (INC x GPF), showing respectively 4.6% and 2.8% of mean asymmetry index. Angular measures showed a more symmetric behavior than the linear ones. Hard palate asymmetry occurs even in the absence of masticatory function,showing that this feature begins early in fetal life and persists through development.
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    Magnetic Resonance Images and Linear Measurements in the Surgical Treatment of Breast Asymmetry
    (Springer, 2009-03-01) Vieira, Adriana Cristhina Pozzobon de Oliveira [UNIFESP]; Sabino Neto, Miguel [UNIFESP]; Veiga, Daniela F. [UNIFESP]; Abla, Luiz Eduardo Felipe [UNIFESP]; Pereira, Juliana B. [UNIFESP]; Biasi, Thiago L. [UNIFESP]; Ferreira, Lydia Masako [UNIFESP]; Yamashita, Ligia A. [UNIFESP]; Kawano, Fernando [UNIFESP]; Nakano, Edson M. [UNIFESP]; Shigueoka, David C. [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Objective evaluation of breast asymmetry surgical treatment should consider not only breast shape but also breast volume.For this study, 22 patients with primary breast asymmetry were evaluated by magnetic resonance imaging (MRI) as well as linear measurements preoperatively and 6 months postoperatively. the mean difference between the pre- and postoperative linear measurements was graduated from excellent to poor. Breast volume was estimated by MRI from axial reconstruction for three-dimensional application using the Cavalieri formula and specific software.A strong correlation (r = 0.817) was found between the pre- and postoperative breast volumes, as increased or decreased by the surgical procedure. Patients with less postoperative volume differences tended to have the best ratings with linear measurements. When the same surgical procedure was performed bilaterally or when only one breast was treated by surgery, greater volume symmetry was observed.Linear measurements and MRI are objective methods for evaluating postoperative symmetry, and when used in association, can help plastic surgeons to achieve favorable results in mammary asymmetry treatment.
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    Palatal asymmetry during development: Am anatomical study
    (Wiley-Blackwell, 2008-07-01) Moreira, Rafael Saviolo [UNIFESP]; Sgrott, Emerson Alexandre [UNIFESP]; Stuker, Henri; Alonso, Luis Garcia [UNIFESP]; Smith, Ricardo Luiz [UNIFESP]; Univ Vale Itajai; Universidade Federal de São Paulo (UNIFESP)
    The purpose of this study was to evaluate hard palate asymmetry during development. the palates of 248 dry skulls were photographed and evaluated digitally. the skulls were divided into seven groups: fetus, newborn, infant, child, adolescent, adult, and aged. Linear measures were obtained from great palatine foramen (GPF) to incisive fossa (INC) and to posterior nasal spine (PNS). Angular measures were obtained from the former landmarks plus the point on sutures intersection between maxillary and palatine bones. Asymmetry was evaluated intra and intergroups. All skulls showed some degree of right-left asymmetry in the hard palate. Regardless of hard palate asymmetry, none of the right-left side differences was statistically significant. for the intergroups assessment, none of the asymmetry index means were statistically different. the posterior part of palate (PNS x GPF) measures was more asymmetric than the anterior part (INC x GPF), showing, respectively, 4.6% and 2.8% of mean asymmetry index. Angular measures showed a more symmetric behavior than the linear ones. Hard palate asymmetry occurs even in the absence of masticatory function, showing that this feature begins early in fetal life and persists through development.