Vertical Ridge Augmentation of the Atrophic Posterior Mandible with Sandwich Technique: Bone Block from the Chin Area versus Corticocancellous Bone Block Allograft—Clinical and Histological Prospective Randomized Controlled Study

Table 1

Group	Obs.	Mean	Std. error	Std. deviation	95% conf. I.
Group Ctrl	12	31.47	7155495	2.262.766	29.85131; 33.08868
Group test	12	30.6	117.936	3.729.462	27.9321; 33.2679

Newly formed bone, t value = 0.6307, and P value = 0.5362. There is no statistically significant difference.