homepage: www.intl.elsevierhealth.com/journals/jden Review The bleaching of teeth: A review of the literature Andrew Joiner * Unilever Oral Care‚ Quarry Road East‚ Bebington‚ Wirral‚ CH63 3JW‚ UK article info Article history: Received 15 December 2005 Accepted 16 February 2006 abstract Objectives: To review current knowledge of tooth whitening with respect to external bleaching methods. Data: The scope is the external bleaching of vital teeth and focuses on mechanisms; in vivo and in vitro
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decided to explore this biological component of the ocean environment. In the following paper‚ I will provide a general overview of coral reefs and examine the alarming depletion of coral and their ecological symbionts in a process known as coral bleaching. As mentioned earlier‚ coral reefs are among the most diverse and productive of all communities on Earth. They are also the largest biological structures on the planet. The Great Barrier Reef‚ along the eastern coast of Australia‚ covers over
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According to The Encyclopedia of Skin and Skin Disorders‚ an insect bite is a puncture wound in the skin by any variety of insects. Some people have more reactions to bites or stings. Babies are usually more affected by bites and stings than adults. Severe allergic or toxic reactions are not common but can be life-threatening and require emergency care. Common stinging or biting insects that cause mild reactions are: mosquitoes‚ flies‚ fleas‚ bedbugs and kissing bugs‚ chiggers‚ nonpoisonous spiders
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SKIN • Largest and heaviest organ of the body; accounts for about 15% of the total body weight • Also called as cutaneous membrane • Skin contains two layers‚ the epidermis and the dermis. • The hypodermis is the layer underneath the skin. FUNCTIONS • Skin is a protective covering that prevents harmful substances from entering the body. • It helps regulate body temperature and water loss. • It houses sensory receptors and contains immune system cells. • It synthesizes chemicals and excretes
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| |INTEGUMENTARY SYSTEM - SKIN IS IN! | Integumentary? That’s a big word to describe something as simple as our skin. First‚ the skin is not all that simple. Second‚ integumentary systems are the parts in humans that include the basic types of skin‚ hair‚ fingernails‚ oil‚ and sweat glands. They are found in integument layers called the epidermis (top)‚ dermis
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Layers of the skin The skin is an ever-changing organ that contains many specialized cells and structures. The skin functions as a protective barrier that interfaces with a sometimes-hostile environment. It is also very involved in maintaining the proper temperature for the body to function well. It gathers sensory information from the environment‚ and plays an active role in the immune system protecting us from disease. Understanding how the skin can function in these many ways starts with understanding
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SKIN I. INTRODUCTION Skin‚ outer body covering of an animal. The term skin is commonly used to describe the body covering of any animal but technically refers only to the body covering of vertebrates (animals that have a backbone). The skin has the same basic structure in all vertebrates‚ including fish‚ reptiles‚ birds‚ and humans and other mammals. This article focuses primarily on human skin. The skin is essential to a person’s survival. It forms a barrier that helps prevent harmful microorganisms
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Many may believe the skin is the most obsolete organ that humans have‚ but that is far from the truth. Scientists‚ just recently‚ have come to the conclusion that human skin is equipped with the strongest‚ most convoluted defense system that the body can produce. To the naked eye‚ the surface of the skin may seem like a calm‚ untouched wasteland scattered with grass-like follicles‚ but‚ magnified‚ it is a battle zone of the body’s defenses fending off unwanted‚ invading bacteria (Metaphor). With
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How Anthony Fabian uses CAMELS to present Sandra’s search for her identity. It should be half a page (two paragraphs) in length. Anthony Fabian’s film ‘Skin’ explores themes of identity and belonging through exposing the true story of Sandra Laing. Her struggle‚ particularly during her frantic attempt to ‘whiten’ herself is a key scene that allows viewers to understand her confusion and discomfort sprouted within her at a young age. Sandra as this stage in the film begins her search for identity
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As the climate changes‚ coral bleaching is predicted to become more frequent and severe. Sea temperature increases and coral stress from other impacts may increase corals’ vulnerability to bleaching. As part of its Reef Health Incident Response System‚ the Great Barrier Reef Marine Park Authority has a Coral Bleaching Response Plan for detecting and responding to coral bleaching on the Great Barrier Reef. What is coral bleaching Many types of coral have a special symbiotic relationship with a
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