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MHRA no: 884

Walrus crowns

Tusk at the impression stage
Patient's tusk at impression taking stage
Walrus tusk with crown
The same tusk after fitting.
Walrus tusk with crown
One of the tusks after fitting. The rate of eruption may be seen from the space that has opened between the casting and the gingival margin
Yuri the Walrus
One of the patients

In the winter of 2004, we completed a set of crowns for five walruses belonging to the Parque Oceanográfico de Valencia, the largest oceanographic park in Europe. The animals had been wearing away their tusks on the edge of their pool and the crowns were supplied to protect the tips from further damage.

Set of walrus crowns
The complete set of crowns

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Double hinged sectional denture

Double hinge sectional denture framework, open

This case required a small unilateral denture to replace the patient's upper right 5 and 6. It was decided to use a two-part or sectional technique to ensure positive retention. There are numerous types of two-part denture designs, but this one may be unique to Creative Chrome, having been devised by Steve to fully engage all of the available undercuts when locked together with a P.W bolt (figs 1 & 2).

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