A 64-year-old woman with known aortic insufficiency presented to our hospital with dyspnoea on exertion and chest pain. These symptoms had become progressively worse over several months. Her past medical history was otherwise notable for rheumatoid arthritis, treated with minocycline 100 mg PO BID and prednisone, as well as atrial fibrillation. She had started minocycline approximately 9 years ...

The aim of this study was to examine whether brownish crown and root discoloration of wisdom teeth was related to treatment of acne with tetracyclines. For this purpose, 17 discolored third molars from nine patients were embedded without being decalcified, ground along the tooth axis, and examined using fluorescence microscopy. A thorough medical history served to determine the start and durati...

provided the original work is properly cited. CC Propofol is a hypnotic agent that is widely used for the induction and maintenance of general anesthesia and sedation in critically ill patients. Its properties of fast action and fast recovery allows for frequent neurological evaluations and assessments during sedation in the intensive care unit (ICU). Here, we report 3 cases of green discolorat...

PURPOSE Oral rinses are widely used to promote periodontal health with provisional restorations during the interim period. The aim of this study was to compare the discoloration of provisional restoration materials with different oral rinses. MATERIAL AND METHODS A total of 140 disc-shaped specimens (shade A2) (10 mm x 2 mm) were prepared from one PMMA-based (TemDent Classic(®)) and three dif...

A healthy 2-year-old girl was referred for toenail thickening and yellow discoloration; she was otherwise asymptomatic. The patient had no history of diabetes, infection, or trauma to her toenails. Physical examination revealed both great toenails to have marked thickening of the nail plate with closely spaced transverse superficial ridging, lack of luster, and dark tanyellowish discoloration (...

A 65-year old patient developed a sacral decubitus ulcer with osteomyelitis after a jaw reconstruction for osteonecrosis of the jaw. (Figure 1B illustrates the skin color just before start of tigecycline treatment). Based on cultures, the unfavourable evolution of the wounds, and her β-lactam allergy, tigecycline was given for a total of 102 days. After 2.5 months of treatment, a progressive br...

An assay to detect UO(2)(2+) complexation was developed based on the chrome azurol S (CAS) assay for siderophores (B. Schwyn and J. B. Neilands, Anal. Biochem. 160:47-56, 1987) and was used to investigate the ability of fungal metabolites to complex actinides. In this assay the discoloration of two dyed agars (one containing a CAS-Fe(3+) dye and the other containing a CAS-UO(2)(2+) dye) caused ...

By EXECUTIVE SUMMARY Hardwood lumber drying in the South is subject to hot and humid weather that promotes enzymatic stain in sapwood. Research has long studied the problem and certain remedies have been proposed. Chemical dipping is the most commonly used method of preventing enzymatic stain. However, its application is only topical and does not prevent stain. A private operator, Danny Elder o...

INTRODUCTION Hydroquinone is the best studied andmost widely used topical depigmenting agent, and represents the gold standard for treatment of disorders of pigmentation. Although ochronosis is a known sequela of long-term hydroquinone use, pigmentation of the nails is rarely a reported side effect. We present a case of identical twins who developed hyperpigmentation of identical nails after th...

Parylene films loaded with TiO2 are reported as photocatalysts in azo dye discoloration processes. The TiO2 loading of the parylene film was 0.32% (w/w) and the amount of TiO2 on the film was about two orders of magnitude below the TiO2 added in suspension to discolore the same solution of Methyl Orange used as a probe. The parylene/TiO2 films showed a similar activity in the presence of O2 or ...