Table 1.

Comparison of edema to cavity size change for specific values. Chart demonstrates the number of cavities with or without 15 mm of edema, versus if the cavity diameter decreased by 10% from the post-operative exam to a follow-up study within 30 days. Both of these cut-off values were determined by post-hoc analysis.

Edema	Cavity Size Decrease, ≥10%	<10%
≥ 15 mm	22	6
< 15 mm	1	11

Table 1 demonstrates the number of cavities with or without 15 mm of edema versus if the cavity diameter decreased by 10% from the post-operative examination to a follow-up study within 30 days. Both of these cutoff values were determined using the post hoc analysis.