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Table 2 Shows the radiographically detectable mean changes (mm) from the mesial (ABC-M) and distal (ABC-D) alveolar bone crest to the cemento-enamel junction (CEJ) or restorative margin (RM) between the different time points at T1–T2, T2–T3, T3–T4, T5–T6, at 1 (T5–T6), 2 (T5–T7), and 3 years (T5–T8) of clinical functioning as well as the clinically detectable mean changes of alveolar crest width (ABC-BL) and for alveolar bone crest height (ABC-B and ABC-O) for T1–T4 compared by bone-grafting material

From: A 3-year prospective randomized clinical trial of alveolar bone crest response and clinical parameters through 1, 2, and 3 years of clinical function of implants placed 4 months after alveolar ridge preservation using two different allogeneic bone-grafting materials

ABC-M mean change in mm
Timepoints T 1–2 T 2–3 T 3–4 T 4–5 T 5–6 T 5–7 T 5–8
Maxgraft + 1.11 − 0.6  + 0.1  + 0.01 − 0.04 − 0.06 − 0.07
Puros + 1.48 − 0.21  + 0.07 − 0.24 − 0.03 − 0.04 − 0.05
ABC-D mean change in mm
 Maxgraft + 1.18 − 0.25 − 0.09 − 0.25 − 0.06 − 0.07 − 0.08
 Puros + 1.34 − 0.28 − 0.01 − 0.07 − 0.03 − 0.05 − 0.06
ABC-BL mean change in mm
 Maxgraft + 4.1 − 1.81  + 0.56     
 Puros + 3.4 − 0.49  ± 0     
ABC-B mean change in mm
 Maxgraft + 2.36 − 0.36 − 0.01     
 Puros + 2.6 − 0.05 + 0.01     
ABC-O mean change in mm
 Maxgraft + 2.24 − 0.23 − 0.11     
 Puros + 3.91 + 0.13 − 0.08