Table 2: Mean bone loss in height related to the type of tooth.

Number of
teeth extracted
Mean (SD) height loss
3 months
after extraction (mm)
Mean (SD)height loss
3 months
after extraction (%)
Upper incisor 22 0.6 (0.61) 6.3 (5.06)
Upper canine 12 0.8 (0.73) 7.19 (6.80)
Upper premolar 31 0.8 (1.11) 5.91 (6.71)
Upper molar 11 0.7 (0.74) 5.38 (5.42)
Lower incisor 8 0.5 (0.17) 4.17 (1.55)
Lower canine 2 0.6 (0.07) 4.57 (0.61)
Lower premolar 7 0.5 (0.51) 4.28 (6.47)
Lower molar 2 0.6 (0.84) 5.9 (6.07)

SD = standard deviation.
Mean bone loss for each type of teeth. The measurements are presented as an average with a 95% standard deviation.