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An impression body, made from alginate impression material. A custom dental model or plaster cast. A dental impression is a negative imprint of hard and soft tissues in the mouth from which a positive reproduction, such as a cast or model, can be formed. It is made by placing an appropriate material in a dental impression tray which is designed ...
Impression materials are designed to be liquid or semi-solid when first mixed, then set hard in a few minutes, leaving imprints of oral structures. Common dental impression materials include sodium alginate, polyether and silicones. Historically, plaster of Paris, zinc oxide eugenol and agar were used.
A dental impression of a section of teeth which records the bite, which can be used to replicate how the teeth bite together. Bite registration is a technique carried out in dental procedures, where an impression is taken of the teeth while biting together, to capture the way they meet together in a bite.
A horse wearing an English bridle with a snaffle bit, the end of which can be seen just sticking out of the mouth. The bit is not the metal ring. Horse skull showing the large gap between the front teeth and the back teeth. The bit sits in this gap, and extends beyond from side to side. The bit is an item of a horse's tack.
Horse teeth often wear in specific patterns, based on the way the horse eats its food, and these patterns are often used to conjecture on the age of the horse after it has developed a full mouth. As with aging through observing tooth eruption, this can be imprecise, and may be affected by diet, natural abnormalities, and vices such as cribbing .
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Examples include specific locations and sizes of cavities, cracked teeth, excessive erosion, abrasion and many more. Conventional dental impressions are made by placing an impression material loaded on an impression tray over the dental arches. As it sets a negative imprint of the soft and hard tissues in the mouth.
Vacuum form mouthguard made from an impression using dental alginate. An impression of the user's teeth is used to create a best-fit mouth protector. The impression may be obtained by using a specially designed impression kit that uses dental putty, or from a dentist who will take an impression in dental alginate material.
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