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Table 5 Descriptive data for differences recorded between RBH values as bone gains and losses between assessments (n = 34)

From: Spontaneous bone regeneration after surgical extraction of a horizontally impacted mandibular third molar: a retrospective panoramic radiograph analysis

  Assessment period
RBH6W_RBH0 RBH6M_RBH6W RBH6M_RBH0
Bone gains (mm)
 Maximum 7.86 11.24 11.07
 Minimum 0.35 0.22 2.09
 Mean 3.67 3.18 6.36
 Median 3.84 2.94 6.62
 Variance 5.63 4.91 5.83
 SD 2.37 2.22 2.41
n 31 33 34
Bone losses (mm)
 Maximum − 1.02 − 1.10
 Minimum − 0.19 − 1.10
 Mean − 0.48 − 1.10
 Median − 0.23 − 1.10
 Variance 0.22
 SD 0.47
n 3 1 0
  1. Abbreviations: RBH6W_RBH0 difference between the radiographic bone height recorded at 6 months and at baseline, RBH6M_RBH6W difference between the radiographic bone height recorded at 6 months and at 6 weeks, RBH6M_RBH0 difference between the radiographic bone height recorded at 6 months and at baseline
  2. A negative value indicates loss, but the amount of loss is in its absolute value