Retreatment Predictions in Odontology by means of CBR Systems

Table 6

Relevant variables.

Variable	value
	Chi-squared test		Exact Fisher test
	Yates	Monte Carlo
Allergy	0.01908788	0.02098951	0.01739722
Mechanical/manual instrumentation	0.0035934	0.001999	0.0029985
Anesthetic	0.00306269	0.0029985	0.00149925
Ranking difficulty level		0.00049975	0.00049975
Tooth number	0.00465514	0.00649675	0.00449775
Root anatomy		0.00049975	0.00049975
Type of restoration: Perno		0.00049975	0.00049975
Perno	0.00017239	0.00049975
Type	0.00537458	0.003998	0.00385604
Time endodontics-restoration		0.00049975	0.00049975
Length	0.00601985	0.00549725	0.00549725
Number of roots	0.02352122	0.02598701	0.02198901
Curvatures yes/no	0.02317278	0.02998501	0.02240645
Adjacent remaining	0.00109389	0.0029985	0.00149925