RESUMO
This study sought to evaluate changes in the soft tissue contour after chin bone graft harvesting. Thirty selected patients underwent chin bone graft harvesting and evaluations were made using lateral cephalograms preoperatively and postoperatively at 30 and 180 days. Fixed points and lines were established on cephalometric tracings and used to measure the selected vertical and sagittal parameters. Results showed statistically significant alterations to the vertical position values of the vermilion (V-VPV) which increased from 9.70 to 11.01 and the exposure of lower incisors (V-ELI) which increased from 1.85 to 3.5, showing an increase in their distance from the plane of reference and a lowering of their position, the clinical equivalent of a labial ptosis condition. None of the sagittal parameters analysed showed any statistically significant variation in the final evaluation. The study concluded that the alterations to patients' soft tissue contours resulted mainly from failure to ensure precise reattachment of the mentalis muscles and identified the need for further investigation of that aspect.
Assuntos
Transplante Ósseo/métodos , Queixo/cirurgia , Face/anatomia & histologia , Coleta de Tecidos e Órgãos/métodos , Adulto , Idoso , Aumento do Rebordo Alveolar/métodos , Cefalometria/métodos , Queixo/anatomia & histologia , Músculos Faciais/anatomia & histologia , Músculos Faciais/cirurgia , Feminino , Seguimentos , Humanos , Incisivo/anatomia & histologia , Lábio/anatomia & histologia , Masculino , Pessoa de Meia-Idade , Dente Molar/anatomia & histologia , Osteotomia/métodos , Estudos Prospectivos , Fita Cirúrgica , Técnicas de Sutura , Adulto JovemRESUMO
The aim of this study was to quantify the microorganisms Streptococcus mutans and Candida sp in the oral cavity of patients with oropharynx carcinoma, before, during and after radiotherapy, and to correlate the results with salivary factors such as pH, buffer capacity (CT) and flow rate (FS). Saliva samples were collected, diluted and inoculated in SB-20 agar and in Sabouraud agar, for Streptococcus mutans and Candida sp, respectively. Previously to dilution, the concentrated saliva was analyzed, and the salivary factors were determined. After the growth of colonies, the number of microorganisms was determined in CFU/ml. The analysis of the results allowed to conclude that the salivary factors are related to the presence of microorganisms, and that the number of CFU/ml increased as salivary flow rate decreased. The effects of radiation compromised salivary homeostasis and favored the increase of infection by yeasts and bacteria.