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Publication Detail
Impression and replica methods for studying hypoplasia and perikymata on human tooth crown surfaces from archaeological sites
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Hillson SW
  • Publication date:
  • Pagination:
    65, 78
  • Journal:
    International Journal of Osteoarchaeology
  • Volume:
  • Issue:
  • Status:
  • Print ISSN:
Perikymata and enamel hypoplasia can be studied most easily by light and scanning electron microscopy of replicas rather than of the original tooth crown surface. Delicate archaeological specimens require special handling. Selection of specimens and cleaning technique are some of the most important factors in producing good replicas, and this paper outlines procedures that have been developed over some years. Several widely available materials produce similarly detailed initial impressions of the crown surface, but an addition‐type silicone dental impression material is recommended here because of its superior stability. The replica itself is cast in the mould of the original impression, and a slow‐curing low‐viscosity Araldite resin‐hardener system is recommended. The paper outlines procedures for taking impressions from a variety of dental remains, together with methods for handling, examining and storing the replicas. The non‐destructive techniques outlined here make it possible to take records of large numbers of crown surfaces in the field, or during a short museum visit, for later study in the laboratory. Many replicas can be produced from one original crown surface impression and the replicas are very robust—they can be mailed easily to other researchers for records or comparative studies. With continuing calls for reburial or repatriation of archaeological human remains, the production of a permanent record for future study is of considerable concern. Copyright © 1992 John Wiley & Sons, Ltd
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