without castings IN A WORLD


Could Cavities Be Filled?


Although some


disagree on who is most responsible for its inven-


tion, the dental inlay has had an undeniably profound impact on modern dentistry. Barnabas F.


Philbrook introduced a pressure casting method for producing gold fi llings for cavities in 1896 that featured a wax pattern,


sprue pin and metal ring inserted directly into the patient’s mouth. T e pattern was removed, the wax was melted and the inlay was cast with air


pressure. T e industry didn’t take notice until a decade later, when William H. Taggart invented a centrifugal casting process in 1907, though he eventually lost a patent due to Philbrook’s previous work. Still, the process developed by these two dentists, with minor alterations, is still used to fi ll cavities today. 


Jan/Feb 2014 | METAL CASTING DESIGN & PURCHASING | 13


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