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      Dimensões nasofaringeanas e faciais em diferentes padrões morfológicos Translated title: Nasopharyngeal and facial dimensions of different morphological patterns

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          Abstract

          OBJETIVO: o presente estudo propõe-se a comparar as dimensões da nasofaringe e as características esqueléticas avaliadas por exame cefalométrico, em indivíduos com padrões morfológicos distintos. MÉTODOS: foram utilizadas 90 telerradiografias de pacientes de ambos os gêneros, de 12 a 16 anos de idade, as quais foram igualmente divididas em três grupos distintos, referentes aos padrões morfológicos - braquifacial, mesofacial e dolicofacial. Foram realizadas medições específicas da região nasofaringeana (ad1-Ptm, ad2-Ptm, ad1-Ba, ad2-S0, (ad1-ad2-S0-Ba-ad1/Ptm-S 0-Ba-Ptm) X 100, e Ptm-Ba) e relativas ao padrão esquelético da face. RESULTADOS: observou-se que os pacientes dolicofaciais apresentaram menor profundidade sagital óssea (Ptm-Ba) e da via aérea da nasofaringe (ad1-Ptm e ad2-Ptm). Sugere-se que essas diferenças estejam relacionadas a um posicionamento relativamente mais posterior da maxila, comum a esses pacientes. Todavia, não foram detectadas diferenças quanto à espessura de tecido mole na parede posterior nasofaringeana (ad1-Ba e ad2-S0), ou à sua proporção em relação a toda a área delimitada para a nasofaringe [(ad1-ad2-S0-Ba-ad1/Ptm-S 0-Ba-Ptm) X 100]. CONCLUSÃO: sugere-se, portanto, que as características faciais de excesso vertical encontradas em pacientes dolicofaciais podem ocorrer, dentre outros fatores, em virtude da obstrução da via aérea nasofaringeana, uma vez que tais dimensões se apresentaram menores para os dolicofaciais.

          Translated abstract

          OBJECTIVE: The purpose of this study was to compare the dimensions of the nasopharynx and the skeletal features-evaluated by cephalometric examination-of individuals with different morphological patterns. METHODS: Were used cephalometric radiographs of 90 patients of both genders, aged 12 to 16 years, which were also divided into three distinct groups, according to their morphological patterns, i.e., brachyfacials, mesofacials and dolichofacials. Measurements were performed of specific nasopharyngeal regions (ad1-Ptm, ad2-Ptm, ad1-Ba, ad2-S0, (ad1-ad2-S0-Ba-ad1/Ptm-S 0-Ba-Ptm) X 100, and Ptm-Ba), and relative to the facial skeletal patterns. RESULTS: Dolichofacial patients were found to have lower than average bone depth sagittally (Ba-Ptm) and lower nasopharyngeal airway depth (ad1-Ptm and ad2-Ptm). Arguably, these differences are linked to a relatively more posterior position of the maxilla, typical of these patients. No differences were found, however, in the soft tissue thickness of the posterior nasopharyngeal wall (ad1-Ba and ad2-S0), or their proportion in the whole area bounded by the nasopharynx ((ad1-ad2-S0-Ba-ad1/Ptm-S 0-Ba-Ptm) X 100). CONCLUSIONS: We therefore suggest that the excessively vertical facial features found in dolichofacial patients may be the result, among other factors, of nasopharyngeal airway obstruction, since such dimensions were shown to be smaller in dolichofacials.

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          A method of cephalometric evaluation.

          This paper describes a method of cephalometric analysis which is currently used by the author in the evaluation and treatment planning of orthodontic and orthognathic surgery patients. In the analysis of a single film, the positions of the maxilla and mandible are related to cranial structures and to each other. Criteria for evaluation of the anteroposterior and vertical positions of the upper and lower incisors are provided, as is the documentation of the standards for each of the measures. In addition, the analysis of serial films is considered and a step-by-step outline of the cephalometric procedure is presented.
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            The relation of maxillary structures to cranium in malocclusion and in normal occlusion

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              A foundation for cephalometric communication

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                dpjo
                Dental Press Journal of Orthodontics
                Dental Press J. Orthod.
                Dental Press International (Maringá )
                2177-6709
                June 2010
                : 15
                : 3
                : 52-61
                Affiliations
                [1 ] Universidade Federal de São Paulo Brazil
                [2 ] Fundação Odontológica de Ribeirão Preto
                [3 ] Universidade de São Paulo Brazil
                Article
                S2176-94512010000300007
                10.1590/S2176-94512010000300007
                957f54ea-49ce-414e-b909-0a55d7e4ec42

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=2176-9451&lng=en
                Categories
                DENTISTRY, ORAL SURGERY & MEDICINE

                Dentistry
                Mouth breathing,Nasopharynx,Cephalometry,Respiração oral,Nasofaringe,Cefalometria
                Dentistry
                Mouth breathing, Nasopharynx, Cephalometry, Respiração oral, Nasofaringe, Cefalometria

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