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As a result, dental analysis is applied to both the recent and long-dead. It is a crucial part of forensic anthropology in terms of identifying the deceased, [ 6 ] and can be applied to archaeological remains to learn about an individual from a burial, or track larger changes in diet of a population if more data is available.
As Pearson had once been a ward of the court in Wichita, his dental records were available to be compared with the skull found in Berdella's backyard. [30] Berdella would be formally charged with the murder by dismemberment of Larry Wayne Pearson in July after the head discovered in his backyard was formally identified as Pearson's on May 12. [30]
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 to roughly fit over the dental arches.
Zinc phosphate was the very first dental cement to appear on the dental marketplace and is seen as the “standard” for other dental cements to be compared to. The many uses of this cement include permanent cementation of crowns, orthodontic appliances, intraoral splints, inlays, post systems, and fixed partial dentures.
The post on the left is a tapered post, the one on the right is a parallel post. In post and core fabrication, it is desirable that the post descend at least two-thirds of the length of root canal (or not less than the height of the crown) in order to provide sufficient retention.
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