Polarised LM of a cracked ceramic dental crown
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Polarised LM of a cracked ceramic dental crown
Dental crown. Polarised light micrograph (PLM) of a longitudinal section through a cracked dental crown made of metal (multicoloured) and ceramic (above metal). If the top of a tooth is badly cracked, decayed or broken, it must be replaced by an artificial crown. The remaining undamaged part of the tooth is cut down to a peg to receive the hollow crown. This crown is then shaped to form a replica of the original tooth and cemented in place. Here the crown has cracked during firing in a dental furnace. This is because the ceramic and metal parts of the crown have different rates of expansion. New dental ceramics must overcome this problem. Magnification: x20 at 5x7cm size
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6433695
© VOLKER STEGER/SCIENCE PHOTO LIBRARY
Ceramic Cracked Crown Dental Dentistry Metal Oral Condition Disorder Health Care Light Micrograph
EDITORS COMMENTS
This print showcases a polarised light micrograph (PLM) of a cracked ceramic dental crown. The intricate details captured in this image reveal the longitudinal section of a dental crown made from both metal and ceramic materials. Dental crowns are essential when the top portion of a tooth is severely damaged, decayed, or broken beyond repair. In such cases, an artificial crown replaces the compromised area by being cemented onto a peg-like structure created from the remaining undamaged part of the tooth. This process ensures that the new crown replicates the original tooth's shape and function. However, as depicted in this photograph, challenges arise during firing in a dental furnace due to differing rates of expansion between ceramics and metals used in these crowns. The result is visible cracks on the surface caused by stress accumulation. The field of dentistry constantly strives to overcome such issues by developing new dental ceramics that can withstand these challenges without compromising their structural integrity. This mesmerizing PLM image serves as an invaluable resource for medical professionals and researchers alike who seek to understand and improve upon existing dental technologies. Its magnification at 20x provides exceptional clarity even at its compact 5x7cm size, making it an ideal tool for studying various aspects related to oral health care and disorders associated with ceramic or cracked dental crowns.
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