A comparison of the fit of spark-eroded titanium copings and cast gold alloy copings.

The fit of spark-eroded titanium and cast gold alloy copings was compared by assessment of retrieved cement film analogues. This technique was chosen for its simplicity, nondestructive nature, and for the information it provided on overall fit. The present study showed that the overall fit of titanium copings was comparable to that of gold copings. In marginal areas, the space between die and coping was found to be larger for spark-eroded than cast copings.