Table 3: Bone loss in height 3 months after dental extraction according to smoking habit or provisional prosthesis.

Number of
teeth extracted
Mean (SD) height loss
3 months
after extraction (mm)
Mean height loss
3 months
after extraction (%)
P-valuea
Smokers 17 0.39 (0.68) 4.06 (6.51) 0.2
Non smokers 78 0.84 (0.59) 6.23 (5.49)
Immediate prosthesis 16 0.85 (0.56) 5.18 (3.17) 0.786
No immediate
prosthesis
79 0.67 (0.62) 6.53 (6.47)

a Statistical significance level was defined at P = 0.05.
Number of teeth extracted for each categories of patient, and the mean bone loss according to the smoking habit or provisional prosthesis.
Student’s t test was performed to determine if tobacco use or the provisional removable prosthesis had any effect on bone loss.