Extra oral digital scanning and imaging superimposition for volume analysis of bone remodeling after tooth extraction with and without 2 types of particulate porcine mineral insertion: A randomized controlled trial

Abstract

At the 4-month analysis both test groups showed reduced bone loss when compared to naturally healing sockets. However, the 2 grafting materials were not able to preserve the alveolar crest, and a reduction close to 30% in the estimates was registered after healing.

Ridge preservation following tooth extraction using bovine xenograft compared with porcine xenograft: A randomized controlled clinical trial

“…Both studies used cancellous porcine xenografts that were processed from the same tissue processor, and ridge preserved sites were allowed approximately the same amount of healing time. The difference between the two studies is that Guarnieri et al . included premolar‐ molar sites and used a resorbable collagen membrane over the graft material, whereas the current study used a d‐PTFE membrane and only included anterior and premolar sites.…”

Evaluation of volumetric dimensional changes in posterior extraction sites with and without ARP using a novel imaging device

“…As regards the advantages seen from our study, we can cite that the present technique is a noninvasive procedure for patients, as a 3‐dimensional optical scanner is employed without any source of X‐ray radiation for the volumetric survey; moreover, data acquisition appears acceptable for patients and easy for the clinician, consisting of an impression being made of the arch and the production of a model cast. The semi‐automaticity of further digital steps (voxelization, fusion, and VOI detection) guarantees, as has been proven by previous studies, a high degree of accuracy due to the single file production (from baseline to 4 months' survey), in which the changes in volume and area of treated and untreated sockets can be easily investigated.…”

“…The STL files were read by a matrix elaborator (MatLab 7.11, The MathWorks, Natick, Massachusetts). Full‐arch digital models of each patient were voxelized and superimposed by using best‐fit algorithm as described by Barone and colleagues; each file was then saved as dicom images with the following acquisition parameters: ∅FOV 102.4 mm, voxel dimension 0.1 mm.…”

“…Postextraction sockets were filled with different bone substitute materials, such as synthetic fillers, xenografts, or allografts; however, biomaterials did not show any significant differences when they were compared to each other . Two systematic reviews investigating posterior alveolar ridges attested that postextraction sockets subject to ARP showed significantly less horizontal and vertical contraction when compared with tooth extraction alone …”

“…A volume analysis was performed by Pang and colleagues, who filled postextraction sockets with particulate anorganic BBM, and they recorded a mean bone resorption of less than 0.3 cc after 6 months of healing . Some researchers investigating volume remodeling using optical scanners on cast models have suggested that a complete ridge preservation was not possible . The authors of 3 reviews and meta‐analyses demonstrated significantly less vertical and horizontal shrinkage of the alveolar crest when postextraction sites were preserved.…”