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Table 1 The percentage changes in grey-scale values over six weeks

From: A comparison of mandibular and maxillary alveolar osteogenesis over six weeks: a radiological examination

 

Grey-scale values

Per Cent Change over Time

 

Pre-operative

Post-operativea

Three weeksb

Six weeksc

Three to Six weeksd

Maxilla

98 ± 26

54 ± 19

4.3 ± 2.7

11.7 ± 8.0

8.0 ± 6.9

Mandible

72 ± 22

53 ± 18

8.9 ± 7.6

15.0 ± 8.1

12.5 ± 9.7

  1. aPost-operative change = (preoperative - postoperative) ÷ preoperative x 100.
  2. bThree weeks = (3 weeks - postoperative) ÷ preoperative x 100.
  3. cSix weeks = (6 weeks - postoperative) ÷ preoperative x 100.
  4. dThree/six weeks = (3/6 weeks - postoperative) ÷ preoperative x 100.
  5. Values are given as a mean ± 1SD.