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Previous issue date: 2016-08-09 / Mudan?as nos segmentos maxilo mandibulares s?o executadas apenas depois da predic??o dos movimentos cir?rgicos atrav?s da an?lise cefalom?trica e determina??o esperada do posicionamento ideal dos tecidos faciais duros e moles. O objetivo deste estudo foi avaliar a correla??o entre o movimento do tecido duro no tecido mole no sentido antero ? posterior utilizando LVV como uma refer?ncia, em pacientes submetidos ? cirurgia ortogn?tica. A amostra consistiu em analisar 54 radiografias de 27 pacientes (09 do sexo masculino e 18 do sexo feminino) com idade m?dia de 29 anos. Os estudos de imagem foram realizados antes e 6 meses ap?s a cirurgia ortogn?tica. Nove pontos (PALS, PALI, Pg?, EST, PA, PB, Pg, PAICS e PAICI) foram marcados e medidos em rela??o a LVV usando um software, Meazure 2.0. O sexo masculino, apesar de representar 33.3 % da nossa amostra, tiveram movimentos mais significantes comparando pr? e p?s (PALI ? LVV, PAICI ? LVV, PALI ? EST; p<,005) em rela??o ao sexo feminino. Mudan?as no PAICI n?o alteram significativamente as proje??es do PALS (? = ,232; p = ,244), mas altera de forma significativa a posi??o do PAICS (? = , 546; p = ,003) e do PALI (? =, 502; p = ,008). Altera??es no PAICS provocaram altera??es significantes no ter?o inferior em pontos como PB (? = ,462; p = ,015), PALI (? = ,383; p = ,049), Pg? (? = ,498; p = ,008) , Pg (? = ,426; p = ,027) e PAICI (? = ,667; p < ,001). J? maior m?dia de movimento do tecido mole foi a espessura do l?bio inferior (PALI ? EST) com 1,14mm de movimento (p < 0,05). A maior altera??o de movimento registrada para a espessura labial inferior foi em um avan?o mandibular de 5,9mm juntamente com recuo maxilar de 4,5mm. A propor??o do movimento mandibular e maxilar para este ponto ? de 1: 0.65 e 1:0.3, respectivamente. Para o tecido duro o PAICI obteve a maior m?dia de movimento em rela??o ? LVV, sendo: 1,37mm (p = ,163). Sendo assim, conclui-se que a espessura labial inferior n?o acompanham em correla??o significativas altera??es na proje??o dos l?bios inferiores e superiores. Movimentos no PAICI n?o alteram de forma significativa as proje??es do PALS, mas altera a posi??o do PAICS. Movimentos nos PAICS provocam altera??es mais significativas no ter?o inferior e para se fazer avalia??es de predic??es dos pontos de tecido mole s?o necess?rios avaliarem no m?nimo tr?s pontos correlatos no mesmo segmento. / Changes in maxillary mandibular segments are performed only after prediction of surgical movements through cephalometric analysis and expected determination of optimal positioning of hard and soft facial tissues. The objective of this study was to evaluate the correlation between the movement of soft tissue in the anteroposterior direction using TVL as reference in patients submitted to orthognathic surgery. The sample consisted of analyzing 54 radiographs of 27 patients (09 males and 18 females) with a mean age of 29 years. Imaging studies were performed before and 6 months after orthognathic surgery. Nine points (PALS, PALI, Pg ', EST, PA, PB, Pg, PAICS and PAICI) were labeled and measured against TVL using a Meazure 2.0 software. Males, although representing 33.3% of our sample, had more significant movements comparing pre and post (PALI - LVV, PAICI - LVV, PALI - EST, p <.005) in relation to the female sex. Changes in the PAICI do not significantly change the PALS projections (? =, 232; p =, 244), but significantly change the position of the PAICS (? =, 546; p =, 003) and PALI (? =, 502 ; P = 0.008). Changes in PAICS caused significant changes in the lower third in points such as PB (? =, 462, p =, 015), PALI (? =, 383; p =, 049), Pg '(? =, 498; ), Pg (? =, 426, p =, 027) and PAICI (? =, 667, p <.001). Already higher mean soft tissue movement was the thickness of the lower lip (PALI - EST) with 1.14 mm of movement (p <0.05). The greatest change in movement recorded for the lower lip thickness was in a mandibular advancement of 5.9 mm along with a maxillary recoil of 4.5 mm. The ratio of mandibular and maxillary movement to this point is 1: 0.65 and 1: 0.3, respectively. For the hard tissue PAICI obtained the highest mean of movement in relation to LVV, being: 1.37mm (p =, 163). Therefore, it is concluded that the lower lip thickness does not accompany significant changes in the projection of the lower and upper lips. Movements in the PAICI do not significantly alter the PALS projections, but change the position of the PAICS. Movements in PAICS cause more significant alterations in the lower third and to make evaluations of predictions of soft tissue points it is necessary to evaluate at least three correlated points in the same segment.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/23615 |
| Date | 09 August 2016 |
| Creators | Souza J?nior, Francisco de Assis de |
| Contributors | 59241144653, http://lattes.cnpq.br/7625795408417124, Germano, Adriano Rocha, 91405963468, http://lattes.cnpq.br/9542712980723391, Sales, Marcelo Augusto de Oliveira, 70317933434, http://lattes.cnpq.br/9070705545715779, Silva, Jos? Sandro Pereira da |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM SA?DE COLETIVA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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