ABSTRACT
BACKGROUND: The aim of this study was to evaluate the long-term skeletal stability of counterclockwise maxillomandibular complex rotation in patients undergoing orthognathic surgery for long-face pattern. METHODS: This retrospective study consisted of 10 patients who underwent the procedure between September 2002 and April 2008. To assess the skeletal stability, 30 preoperative (T1), recent postoperative (T2), and late postoperative (T3) cephalometric radiographs of the 10 patients were digitized and traced. To measure the stability in the occlusal plane and mandibular plane, the cephalometric points and planes were determined 3 times. RESULTS: In the long term, on average, the A-point moved 0.21 mm backward (AYT3-AYT2), the B-point moved 0.57 mm backward (BYT3-BYT2), and the posterior nasal spine moved 0.31 mm backward (PNSYT3-PNSYT2). On average, the anterior maxillary area (A-point) moved 0.14 mm downward (AXT3-AXT2), the mandible (B-point) moved 0.07 mm downward (BXT3-BXT2), and the posterior nasal spine moved approximately 0.18 mm upward (PNSXT3-PNSXT2). The occlusal plane increased by 0.75 degrees (OPT3-OPT2), and the mandibular plane increased by 0.45 degrees (MPT3-MPT2). CONCLUSIONS: It was observed that the counterclockwise rotation of the maxillomandibular complex produces stable results in patients with long-face pattern undergoing orthognathic surgery.
Subject(s)
Dentofacial Deformities/surgery , Mandible/surgery , Maxilla/surgery , Orthognathic Surgical Procedures/methods , Adolescent , Adult , Cephalometry/methods , Dental Occlusion , Dentofacial Deformities/pathology , Female , Follow-Up Studies , Genioplasty/methods , Humans , Male , Mandible/pathology , Mandibular Advancement/methods , Maxilla/pathology , Nasal Bone/pathology , Nasal Bone/surgery , Osteotomy, Le Fort/methods , Osteotomy, Sagittal Split Ramus/methods , Retrospective Studies , Rotation , Treatment Outcome , Vertical Dimension , Young AdultABSTRACT
A antibioticoterapia em pacientes pediátricos, assim como qualquer outro tipo de prescrição possui certas particularidades inerentes ao estágio de desenvolvimento orgânico destes pacientes. Diferenças na concentração de proteínas plasmáticas, no peso corporal e na concentração de água nos tecidos alteram de forma direta os processos farmacológicos (farmacocinética e farmacodinâmica) fazendo da prescrição, nos pacientes pediátricos, um momento delicado do tratamento. Portanto, a escolha da droga e sua dosagem devem ser observadas com bastante atenção, levando-se em consideração a imaturidade dos órgãos e sistemas destes pacientes
