Table 3 Comparison of bone loss and PTV by variable

Bone quality

0.967

<0.001

 Soft

13

0.15 mm (0.376)

−2.323 (0.208)^a

 Normal

37

0.15 mm (0.423)

−3.273 (0.266)^b

 Hard

48

0.13 mm (0.375)

−3.562 (0.335)^c

Location

0.402

<0.001

 Maxilla

42

0.18 mm (0.439)

−2.979 (0.514)

 Mandible

56

0.11 mm (0.351)

−3.522 (0.335)

Loading period

0.715

0.014

 Over 1 year

22

0.08 mm (0.282)

−3.125 (0.518)^a

 Over 2 years

19

0.21 mm (0.535)

−3.095 (0.424)^a

 Over 3 years

34

0.16 mm (0.439)

−3.409 (0.452)^b

 Over 4 years

23

0.11 mm (0.259)

−3.465 (0.508)^b

Splinting status

0.407

0.968

 Yes

68

0.16 mm (0.418)

−3.295 (0.519)

 No

30

0.08 mm (0.245)

−3.290 (0.406)

Reason for tooth loss

0.314

0.559

 Periodontitis

89

0.13 mm (0.384)

−3.285 (0.514)

 Caries

9

0.29 mm (0.488)

−3.400 (0.224)