Efficacy of Alveolar Ridge Preservation after Maxillary Molar Extraction in Reducing Crestal Bone Resorption and Sinus Pneumatization: A Multicenter Prospective Case-Control Study

Table 3

Vertical resorption of the alveolar bone six months after dental extraction.

	Control	Test	Difference	Diff.
	(mm)	(mm)	(mm)
RHm	2.52 ± 1.52	1.45 ± 0.64	1.07	0.20; NS
RHd	1.75 ± 1.24	1.74 ± 0.57	0.01	0.97; NS
RHp	2.31 ± 1.50	1.67 ± 1.02	0.64	0.14; NS
Total	2.01 ± 0.84	1.62 ± 0.49	0.39	0.08; NS

Measures are presented as mean±standard deviation. RHm, RHd, RHp, vertical reduction of the alveolar bone expressed as the difference between the most coronal positions of the ridge at T0 and T1 and the root apex at T0, measured following the axis of the mesial (RHm), distal (RHd) and palatal (RHp) roots. Diff. significance of the difference between the groups. NS, no significant difference.