Table 3 Different parts of measurements of the screws.

From: Biomechanical effects of original equipment manufacturer and aftermarket abutment screws in zirconia abutment on dental implant assembly

  

Model

N

Mean

SD

p-value

a

Head height

I

5

1.000 mm

0.001

< 0.001

II

5

0.900 mm

0.001

b

Neck height

I

5

1.160 mm

0.001

< 0.001

II

5

1.261 mm

0.002

c

Shank length

I

5

2.350 mm

0.001

< 0.001

II

5

2.298 mm

0.003

d

Thread length

I

5

2.749 mm

0.004

< 0.001

II

5

2.841 mm

0.002

e

Thread spacing

I

5

0.393 mm

0.001

0.012

II

5

0.399 mm

0.004

f

Overall length

I

5

7.259 mm

0.004

< 0.001

II

5

7.301 mm

0.006

g

Hex angle

I

5

55.223\(^\circ\)

0.136

< 0.001

II

5

52.404\(^\circ\)

0.266

h

Thread angle

I

5

59.036\(^\circ\)

0.009

0.002

II

5

59.638\(^\circ\)

0.298

  1. Models I (OEM) and II (aftermarket CAD/CAM) exhibit statistical differences in the measurements of ‘a’ to ‘h’ (p < 0.05).
  2. SD standard deviation.
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