Biomedical subjects
Publications and source records attributed to A Gennai.
The Authors, after a short description of the characteristics of composite materials used for restoration of anterior teeth, present clinical cases to demonstrate the improvement of such filling materials. The use of composite is increased even if the dentists should proceed with caution in order to obtain good and lasting results.
In this work the problems due to shortage of proper or adherent gum have been analyzed, further has been referred the clinical cases corresponding to the periodontal indications, which foresee the reconstruction of an insufficient superficial periodontium. Moreover have been described the surgical techniques of the free graft.
Odontoma is a typical tumor without eclatant symptoms and the case described from the Authors do not exception. This case is particular because the first time it is found in an adult age and in an unusual sit.
In this prospective study, we assessed the diagnostic capabilities of multidetector computed tomography (CT) in various esophageal pathologic conditions. Thirty-three patients underwent a multidetector CT study after esophageal distention by means of effervescent powder administered after induction of pharmacologic esophageal hypotonia. All acquired images were post-processed with two- and three-dimensional software tools. The CT data were compared with the results of conventional radiology (33), endoscopy (28), endoscopy ultrasonography (14), or surgery (14). Follow-up ranged between 4 and 15 months. Esophageal distention in the upper and middle thirds was classified as "good" in 32 of 33 cases (97%); in the lower third, esophageal distention was "good" in 21 of 33 cases (64%). Final diagnoses were leiomyoma (six cases), squamous cell carcinoma (six), adenocarcinoma (four), esophageal infiltration by thyroid cancer (two), benign polyposis (two), chronic esophagitis (five), post-sclerotherapy stenosis (one), no abnormalities (seven). When good distention was achieved, the thickness of unaffected esophageal wall was less than 3 mm (range, 1.5-2.4 mm; mean, 1.9 mm). Pathologic wall thickening was observed in 25 of 33 cases (76%), with values ranging between 3.6 and 36 mm (mean, 9.6 mm). Spiral CT demonstrated 21 true positive cases, and seven true negative cases. There were four false negative cases and one false positive case. Sensitivity was 84%, specificity was 87%, diagnostic accuracy was 85%, positive predictive value was 95%, and negative predictive value was 64%. Evaluation of the esophagus with multidetector CT is a promising technique and easy to use, allowing panoramic exploration, virtual endoluminal visualization, accurate longitudinal and axial evaluations, and simultaneous evaluation of T and N parameters.
The present paper briefly outlines the pathogenesis of cleft palate and proposes a classification system for cleft palate since both are considered essential for the understanding and assessment of its sequelae. The Authors describe one case of cleft palate. Cleft palate patients present functional and aesthetic alterations in the maxillomandibular area that often require prosthetic correction. Given the features of these malformations therapy and rehabilitation should be programmed as soon as possible after birth and the plastic surgeon should be informed of the factors that cause the malformations and influence the growth of such patients.
Pregnancy represent a particular sistemic condition able to induce, because the tissutal metabolism is upset, an increase replay of the gingival tissues, caused by local factors as plaque and tartar. In this study are described effects determined from the increment ormone on the periodontal tissues, the alterations of the salivar components in pregnancy and the therapy to follow to reach as soon as possible the recovery.