The temperature increase of the ring grooves as a result of using aluminum alloy crowns can always be counteracted by the adoption of a cocktil shaking chamber behind the ring grooves where the cooling effectiveness by cocktail shaking is much higher than with solid flow.
1991, American Philosophical Society, Yearbook, page 128:
The Tu-GDP-affinity resin was first converted into Tu-GTP-affinity resin by a standard phosphoenolpyruvate-pyruvate kinase cocktil.