STATEMENT OF PROBLEM Flexural strength, hardness, surface roughness, discoloration, and abrasion resistance are important properties of veneering composite resins. Recently introduced veneering resins are purported to have enhanced mechanical properties due to their composition, but their long-term durability is not known. PURPOSE The purpose of this study was to test the impact of aging on 3...

We conducted gross and microscopic characterizations of lesions in Cnidaria from Palmyra Atoll, Central Pacific. We found growth anomalies (GA) to be the most commonly encountered lesion. Cases of discoloration and tissue loss were rare. GAs had a focal or multi-focal distribution and were predominantly nodular, exophytic, and umbonate. In scleractinians, the majority of GAs manifested as hyper...

Case: A 54-year-old woman was visited with a history of asymptomatic gray-brown discoloration of the facial skin at our dermatology clinic. The lesions first appeared on her chin and then became progressively darker and extended to her nose and, to a lesser extent, to the periphery of her face over a period of five years. She mentioned that the lesions worsened with heat and sun exposure. Her p...

BACKGROUND We describe a rare case of diffuse macroscopic discoloration and chemical gastritis due to chronic bromazepam intake. The chemical composition of pharmaceuticals has to be considered at endoscopy and it is evident that some chemical substances damage the epithelial tissue and lead to clinical symptoms. CASE PRESENTATION Endoscopy was performed in an 82-year-old patient due to gastr...

Forensic nursing experts and other health professionals often testify regarding the injuries women and men receive from violence. Bruise discoloration can provide an opportunity for health professionals to grossly estimate the age of impact and determine if it is consistent with a given reported history. However, there is much confusion in the literature and clinical practice as to the accuracy...

Full face ablative resurfacing and fractional ablative resurfacing techniques are treatments of choice for facial rejuvenation of aged and photoaged skin. Both techniques were shown to be highly effective for dyschromia, fine lines and wrinkles [1-3]. Although better results are obtained with full resurfacing procedures, it comes with more downtime and more serious risks, when compared to fract...

This in-Vitro study was conducted to investigate the stain resistance of direct composite resin restorative materials with different polishing systems (diamond finishing and polishing burs, aluminium oxide disks and abrasive impregnated disks) in comparison to the material cured against a mylar strip. The composite resin materials investigated included Clearfil AP-X (hybrid), Filtek Z-250 (hybr...

Introduction: The aim of this study was to compare a one-year clinical performance of two composites (Ariston PHC with Tetric) in class II cavity preparations. Materials & Methods: Ninety-six class I and II modified cavity preparations in identical patients were prepared. Metallic matrix was used for restoration of class II preparations. Ariston PHC and Tetric were used for restorations. The cl...

background: nail disorders comprise approximately 10% of all dermatological conditions. abnormalities in the color of nails are called ungal dyschromia or chromonychia. ungual dyschromia may be endogenous or exogenous. yellow discoloration of the nails has been reported during the last years as separate observation related to drug administration, during hemodialysis and associated with pulmonar...