Navegando por Palavras-chave "Maxillofacial abnormalities"

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    Analysis of the cephalometric pattern of Brazilian achondroplastic adult subjects
    (Dental Press International, 2012-12-01) Cardoso, Renato; Ajzen, Sergio Aron [UNIFESP]; Andriolo, Aline Ribeiro; Oliveira, Jefferson Xavier de; Andriolo, Adagmar [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Universidade de São Paulo (USP)
    OBJECTIVE: The aim of this study was to assess the position of the cranial base, maxilla, and mandible of Brazilian achondroplastic adult subjects through cephalometric measurements of the cranio-dento-facial complex, and to compare the results to normal patterns established in literature. METHODS: Fourteen achondroplastic adult subjects were evaluated based on their radiographic cephalometric measurements, which were obtained using the tracings proposed by Downs, Steinner, Bjork, Ricketts and McNamara. Statistical comparison of the means was performed with Student's t test. RESULTS: When compared to normal patterns, the cranial base presented a smaller size in both its anterior and posterior portions, the cranial base angle was acute and there was an anterior projection of the porion; the maxilla was found to be smaller in size in both the anteroposterior and transversal directions, it was inclined anteriorly with anterior vertical excess, and retropositioned in relation to the cranial base and to the mandible; the mandible presented a normal-sized ramus, a decreased body and transverse dimension, a tendency towards vertical growth and clockwise rotation, and it was slightly protruded in relation to the cranial base and maxilla. CONCLUSION: Although we observed wide individual variation in some parameters, it was possible to identify significant differences responsible for the phenotypical characteristics of achondroplastic patients.
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    Efetividade da expansão rápida da maxila assistida cirurgicamente utilizando técnica de osteotomias em dois e três segmentos: ensaio clinico randomizado
    (Universidade Federal de São Paulo (UNIFESP), 2017-06-01) Prado, Gabriela Pereira Ribeiro [UNIFESP]; Pereira, Max Domingues [UNIFESP]; Furtado, Fabianne Magalhães Girardin Pimentel [UNIFESP]; http://lattes.cnpq.br/5809529650066993; http://lattes.cnpq.br/9679136417299816; http://lattes.cnpq.br/9612434112678451; Universidade Federal de São Paulo (UNIFESP)
    Introduction: The treatment of choice for adult transversal maxillary deficiency (TMD) ≥ 5mm is surgically assisted rapid maxillary expansion (SARME). There is no consensus in the literature on the best operatory technique, type and location of the osteotomies. Objective: Comparing 2- and 3-segment SARME effectiveness concerning quality of life (QL), maxillary expansion symmetry, stability of changes in palate area and volume, changes in nose width and topology of the paranasal area. Methods: 32 adult patients with TMD ≥ 5mm were randomly assigned to groups 2S (n=16) and 3S (n=16). Physical and psychological assessments were carried out before SARME (PREVIOUS) and in one of the following points in time: expansion accomplishment (EA), and four, six and ten months after EA (4M, 6M and 10M, respectively). QL was assessed according to Oral Health Impact Profile (OHIP-49) and Brazilian Orthognatic Quality of Life Questionaire (B-OQLQ). Symmetry of maxillary expansion was determined by superposing PRE and FE tomographs; stability of palate volume changes was assessed on 3D digital images produced from scanning PRE, 4M and 10M plaster casts; changes in nose width was established by superimposing PRE and 6M digital images obtained from scanning of patients faces; and clinical complications. Results: Results: There was statistical differences in the domains of Deficiency and Social Inability of OHIP-49 between 2S and 3S techniques. None of the tools assessing QL showed any statistically significant difference in total scoring when comparing groups 2S and 3S. There was an asymmetry of the expansion between the two techniques, however no differences were detected between the groups. The 2S and 3S techniques showed a significant increase in the area and volume of the A b s t r a c t | 161 palate at 4M, and at 10M the area measurement was stable while the volume showed a significant increase. The mean increase in nose width was greater (p=0.17) in group 2S (2.73mm) as compared with group 3S (1.92mm). There were no differences between the techniques regarding total, anteroposterior (Z axis) and vertical (Y axis) displacements, excepting for changes along X-axis (transversal) which were greater for 3S technique (p=0.014). The clinical postoperative complications were low and did not differ statistically between groups. Conclusion: Both SARME techniques produced the same positive quality-of-life impact on groups 2S and 3S as assessed 6 months after intervention; in the parameters used, the maxillary expansion asymmetry is similar in the 2S and 3S techniques; stable increase in palate area and volume as assessed in 10-month followup; similar forward changes in the topology of paranasal areas and 2S technique produced a larger nose width as compared with 3S intervention; postoperative complications were similar in 2S and 3S techniques .