Table 5.

Adverse reactions during treatment [n (%)]

Groups	n	Gingivitis	Abutment teeth loosing	Periapical periodontitis	Total incidence of adverse events (%)
Observation group	45	1 (2.22)	0 (0.00)	1 (2.22)	2 (4.44)
Control group	45	2 (4.44)	3 (6.67)	3 (6.67)	8 (17.78)
χ2	-	0.345	3.103	1.047	4.050
P	-	0.557	0.078	0.306	0.044