Table 13.

Primary stability to survival rate

	Number of implant placed	Number of implant failure	Survival rate (%)	p value
Maxilla
< 35 Ncm	113	1	99.1	–
35 Ncm ≤ , < 50 Ncm	334	10	97.0	0.37
50 Ncm ≤	877	11	98.7	0.91
Mandible
< 35 Ncm	31	0	100	–
35 Ncm ≤ , < 50 Ncm	248	3	98.8	0.76
50 Ncm ≤	761	4	99.5	0.37
Total
< 35 Ncm	144	1	99.3	–
35 Ncm ≤ , < 50 Ncm	582	13	97.8	0.23
50 Ncm ≤	1638	15	99.1	0.78

*p < 0.05, **p < 0.01: Chi-square test