Table 2

Distance	Non-atrophic mandibles	Atrophic mandibles
Distance	Mean (SD), mm	Mean (SD), mm
AM-MF right^a	19.18 (1.84)	14.54 (2.9)
PM-MF righta	14.69 (2.61)	11.83 (1.47)
SM-MF right^a	23.26 (3)	21.2 (3.78)
IM-MF right^a	25.89 (3.94)	23.6 (3.39)
AM-MF left^a	19.48 (1.82)	14.51 (2.7)
PM-MF left^a	14.18 (2.44)	11.73 (1.46)
SM-MF left	22.24 (3.3)	21.65 (3.58)
IM-MF left^a	25.95 (3.44)	22.2 (3.47)

^aStatistically significant at level P < 0.0001 (t-test).
AM = anterior margin of the ramus; IM = inferior margin of the ramus; MF = mandibular foramen; PM = posterior margin of the ramus; SM = superior margin of the ramus; SD = standard deviation.