Table 1.

Radiographic and histologic analyses between groups*.

Measurement	Experimental (n = 25)	Control (n = 24)	P value
Increase in root wall thickness	0.64 ± 0.48	0.75 ± 0.43	0.41
Apical closure	0.64 ± 0.48	0.54 ± 0.50	0.49
Periapical healing	0.84 ± 0.37	0.67 ± 0.47	0.17
New hard tissue deposition	0.64 ± 0.48	0.75 ± 0.43	0.41
Decrease in apical diameter	0.92 ± 0.27	0.67 ± 0.47	0.03

*No significant differences were observed between groups in any parameters analyzed, except the apical diameter.