background and aims. the aim of this study was to evaluate the effect of different etching times on enamel color stability after immediate versus delayed exposure to colored artificial saliva (cas). materials and methods. human first premolars were divided into five groups of twenty. a colorimeter was used according to the cie system on the mid-buccal and mid-lingual surfaces to evaluate initia...

Figure 1. Ischemic ulceration and necrosis of left middle finger. DESCRIPTION A 35-year-old man presented with a 3-year history of episodic fingertip pain with associated discoloration triggered by cold exposure. His job required activities in a subzero walk-in freezer, which exacerbated pain and discoloration. The middle fingertip wound began spontaneously 3 months prior and worsened despite m...

although esthetic is a relative issue, depending upon the country and culture, almost all around the world, there is a consensus that a beautiful set of teeth is the one which is white and bright and is aligned regularly. in iran also the main feature of a beautiful tooth is its whiteness. during the past decades and centuries, tooth discoloration was considered as an esthetic issue and differe...

PURPOSE This in vitro study was performed to correlate the presence of discoloration on occlusal surfaces with its histological depth and assess its influence on Diagnodent measurements in a group of permanent and primary teeth. METHODS Ninty-five primary and 95 permanent third molars were randomly selected from a pool of macroscopically intact teeth. One site of the fissure on each occlusal ...

statement of problem: primary teeth discoloration can cause mentally and socially unpleasant effects in children. this can also be a sign of systemic disease. despite the importance of this subject, a comprehensive study has not been performed yet. purpose: the aim of this study was determining the frequency of different types of primary teeth discoloration. materials and methods: in this cross...

introduction: there are numerous factors that can lead to tooth discoloration after endodontic treatment, such as penetration of endodontic materials into the dentinal tubules during root canal treatment. the aim of this in vitro study was to compare discoloration induced by tooth colored mineral trioxide aggregate (mta) and calcium-enriched mixture (cem) cement in extracted human teeth. method...

To the Editor: A 9-year-old girl was admitted with surgical-site infection after triple pelvic osteotomy. Superficial wound exudate culture yielded methicillin-resistant Staphylococcus aureus (MRSA). Ultrasound revealed a soft tissue heterogeneous collection with subcutaneous fistulization. She completed 14 days of intravenous vancomycin and gentamicin with clinical and laboratory improvement. ...

o bjective: to determine the etiology, signs and symptoms, angiography indications and angiography findings in patients with limb penetrating injuries suspected to have arterial injury. m e thods: this was a cross-sectional study being performed in imam reza hospital affiliated with mashhad university of medical sciences, iran between september 2011 and march 2013. we included those patients wi...