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Table 3 Shows the standard deviation (mm) of changes 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 for 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 STD 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 1.18 0.69 0.48 0.66 0.01 0.03 0.03
Puros 1.83 0.44 0.29 0.73 0.02 0.03 0.03
ABC-D STD in mm
 Maxgraft 1.35 0.89 0.33 0.73 0.03 0.03 0.04
 Puros 1.88 0.79 0.32 0.55 0.04 0.04 0.03
ABC-BL STD in mm
 Maxgraft 0.91 0.67 0.66     
 Puros 0.86 0.88 0.88     
ABC-B STD in mm
 Maxgraft 2.03 0.17 0.1     
 Puros 1.59 0.09 0.03     
ABC-O STD in mm
 Maxgraft 1.81 0.31 0.08     
 Puros 1.18 0.04 0.01     
  1. STD standard deviation