Platinum soldering for dental crowns
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Platinum soldering with the 'combination' blowpipe and bellows, or compressed air (Fig. 21), or with a gasoline blowpipe (Fig. 22) manufactured by Dr R C Brophy (Chicago, Illinois). Page 32, 'Principles and practice of crowning teeth : a practical, systematic and modern treatise upon the requirements and technique of artificial crown work, including some incidental reference to bridgework' by Hart John Goslee, 1903.