It was concluded that skin staples are better alternatives to conventional sutures in head and neck cancer surgery as they offer ten times faster wound closure, cost effectiveness, and similar results to sutures in terms of patient comfort, aesthetic outcome and complication rate.
Peak absorbance changes correlated to changes in species concentration have been the norm in applied spectroscopy, while baseline shifts have been more of an inconvenience. Taking the first or second derivative of the spectra eliminates these baseline shifts. However, with multivariate techniques becoming more readily available, repeatable baseline changes may now be monitored and correlated to specific physical changes. This concept has been studied by monitoring the concentration of titanium dioxide (TiO2), a white inorganic filler, in molten poly(ethylene terepthalate) (PET). Various mixtures of filled and unfilled PET resins were run through a single‐screw extruder, and near infrared spectra were collected in‐line by using a flow cell, housing two fiber‐optic probes, and mounted downstream of the extruder. The presence of titanium dioxide caused the scattering of light that resulted in a systematic baseline shift. The baseline shifts were correlated to the TiO2 concentration data. Multivariate techniques involving the use of singular value decomposition (SVD) to perform partial least squares regression (PLS) were applied to quantitatively determine TiO2 content in the PET melt stream. Standard error of prediction (SEP) values of about 1% were obtained for a model based on two factors.
Introduction Oral submucous fibrosis (OSF) is an insidious disease affecting the oral cavity, pharynx, and upper digestive tract. It is characterized by a juxtaepithelial inflammatory reaction followed by fibroelastic change in the lamina propria and associated epithelial atrophy. Higher levels of TGF-b present in patients with OSF could be responsible for impetus to remnants of Reichert's cartilage present in styloid complex leading to partial or complete ossification of associated ligaments. So, a study was conducted to evaluate the elongation of the styloid process in patients with OSF by using panoramic radiographs. Materials and Methods Panoramic radiographs of patients with OSF were studied from 2007-2011. The apparent lengths of styloid process were measured with the help of divider and steel metric ruler. The length of the styloid process and/or ossification of stylomandibular ligaments which were longer than 30 mm were considered. Results Out of 47 patients, 35 patients (34 males & 1 female) met the inclusion criteria. Eleven patients (31.4%) were found to have elongated styloid processes which included 10 male patients and 1 female patient. Conclusion It had been estimated that between 2 % and 4% of the general population presents radiographic evidence of an ossified portion of the styloid complex. The high incidence of elongation of styloid process (31.4 %) in patients with oral submucous fibrosis highlights that progressive OSF might have some influence on elongation of styloid process.
Neuroendocrine tumors of the oral cavity and jaws are exceedingly rare. They include paragangliomas, a melanotic neuroectodermal tumor of infants, small cell carcinomas, and Merckel cell carcinomas. Most have been non-functional in nature. Breast, lung, liver, colon, and prostate are the most common reported primary malignancies which can metastasize to the oral cavity. In most cases, oral metastases involve maxilla and mandible rather than soft tissues. The premolar-molar region is the most common localization. The purpose of this article is to describe a rare case of a high grade neuroendocrine tumor of the mandible which metastasized from the cervix.
Condylar hyperplasia of the mandible is a clinical condition of over-development and growth because of excessive cellular growth of one condylar part of the mandible leading to facial asymmetry, mandibular deviation and enlargement of condyle. The elongation of the condylar neck in turn leads to malocclusion and articular dysfunction. In the past the interceptive and corrective procedures of growth and deformity in condylar hyperplasia were either condylectomy or high condylotomy. However, the deformity ceases after growth is completed. Therefore, other surgical procedures have to be undertaken to correct the manifested deformity of condylar hyperplasia. Further it has to be stressed that no single procedure can completely correct the deformity. So in addition to condylectomy, other orthognathic surgical procedures both on body and ramus and also on maxilla can be undertaken to correct the canting of occlusion. Two rare cases of unilateral hyperplasia encountered in our hospital are presented which required different lines of treatment.
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