contact dermatitis is an inflammatory reaction of the skin and mucosa to either external or internal factors. it can be divided to two forms of irritant contact dermatitis and allergic contact dermatitis. nickel is one of the most common materials that causes allergic contact dermatitis and is widely used in orthodontic appliances. the inflammatory reaction to this metal in orthodontics is usua...

conclusions the results of the current study suggest that long term use of dentures can cause a wide range of candida species colonization, resulting angular cheilitis. there was a need for an oral manifestation management-based strategy focusing on clinical and preventative treatment. angular cheilitis can be prevented by changing and replacing a new denture to modify the face vertical dimensi...

Inflammatory lesions of the lips are usually a cosmetic complaint, but may also be a relevant manifestation of systemic diseases. Cheilitis and angular cheilitis are usually considered as distinct entities as there are different underlying causes of the two conditions. However, they may also coexist with each other. Cheilitis may also coexist with or precede the onset of numerous systemic disor...

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We study the mechanical properties of a broad class of multimode and polarization light patterns, resulting from the interference and superposition of waves in helical modes. General local and global properties of energy and angular momentum (AM) are identified, in order to define the conditions to optimize the AM with increasing beam complexity. We show the possibility to engineer independentl...