Location of the Mandibular Canal and Thickness of the Occlusal Cortical Bone at Dental Implant Sites in the Lower Second Premolar and First Molar

Table 1

Measurements of TC, MC, MD, and CD at the second premolar and first molar.

		Mean (mm)		SD (mm)	CV (%)	Max (mm)	Min (mm)
Lower second premolar	TC	2.38	±	0.49	20.49	3.42	1.60
	MC	15.88	±	3.41	21.50	23.75	10.56
	MD	3.92	±	1.05	26.76	6.34	1.65
	CD	4.08	±	0.98	24.90	6.43	2.63
Lower first molar	TC	1.72	±	0.39	22.62	2.60	1.00
	MC	16.15	±	2.71	16.75	23.64	11.25
	MD	4.00	±	0.90	22.46	5.52	1.86
	CD	4.72	±	1.27	26.82	8.52	2.56

SD: standard deviation; CV: coefficient of variation (100 × SD/mean); MC: the distance from the mandibular canal to the upper border of the mandible; CD: the distance from the mandibular canal to the buccal border of the mandible; MD: the distance from the mandibular canal to the lingual border of the mandible; TC: the thickness of the cortical bone at the occlusal side.
All variables were normally distributed (Shapiro-Wilk test, 𝑃>.05).