Radiographic and histologic observations of sequential healing processes following ridge augmentation after tooth extraction in buccal‐bone‐deficient extraction sockets in beagle dogs

Abstract

Objectives:To evaluate dimensional ridge alterations and sequential healing processes following ridge augmentation after tooth extraction in damaged extraction sockets with buccal-bone-deficiency. Material and methods:Bilateral dental roots of three mandibular premolars were extracted with entire removal of the buccal-bone plate in eight beagle dogs. Unilateral sites were grafted with biomaterials (test group) and contralateral sites were healed without grafting (control group). Observations were made after 1, 2, 4, and 8 weeks, and all sites were distributed evenly (n = 6 for each group and period). Radiographic/ histomorphometric analyses were performed.

Soft Tissue Dimensions Following Tooth Extraction in the Posterior Maxilla: A Randomized Clinical Trial Comparing Alveolar Ridge Preservation to Spontaneous Healing

“…Alveolar ridge preservation (ARP) following tooth extraction is a well-documented clinical procedure with a number of reported benefits including: limiting morphologic changes of the ridge contour, preserving the integrity of hard and soft tissues [ 1 ], optimizing the ridge contour in extraction sites with a loss of the buccal bone plate [ 2 , 3 ], preventing shrinkage of the keratinized tissue [ 4 ], and resisting maxillary sinus floor pneumatization in case of extractions in the posterior maxilla [ 5 , 6 ]. Moreover, ARP can compensate for alveolar bone resorption and changes of the soft tissue contour that spontaneously occur following tooth extraction [ 7 , 8 , 9 ].…”

Ridge Augmentation Using β-Tricalcium Phosphate and Biphasic Calcium Phosphate Sphere with Collagen Membrane in Chronic Pathologic Extraction Sockets with Dehiscence Defect: A Pilot Study in Beagle Dogs

“…This result is due to immature trabecular bone formation at 4 weeks, whereas mature trabecular bone formation occurs by 3 months. Moreover, it takes approximately 3 months for bone maturation in the tooth-extraction or ridge-preservation sites [6,19]. On the other hand, BS/BV, an indicator of bone complexity [20], did not show significant intergroup differences in contrast to a previous study that undertook ridge preservation using a non-resorbable xenograft [10].…”

“…Recently, various studies have been published on extraction sockets with periodontal defects. The initial models were presented in the literature with surgically-created defects, which were far from clinical conditions, in that these models had no chronic pathology due to the absence of bacterial infection [6,7]. The next model suggested in the literature was the endodontic-periodontic combined lesion model, which was more advanced, in that it reflected an inflammatory condition [9,10].…”

“…The residual root of each distal site was used as a reference alveolar ridge when calculating the ridge contraction. To investigate the change after tooth extraction and/or ridge augmentation, each middle section of the mesial root was superimposed with reference sections (distal root) as previously described [6,11]. The area was demarcated into three regions at each superimposed image: coronal 1/3, middle 1/3 and apical 1/3, and then the dimensional changes of the experimental area compared to the reference area were calculated and expressed as percentages in these three areas ( Figure 4).…”

“…Ridge preservation can significantly reduce ridge contraction, as compared to sites that have spontaneously healed. Moreover, ridge augmentation to reduce ridge contraction can be carried out when the extraction socket wall is damaged [6,7]. However, the effect of the flapless ridge preservation/augmentation and/or extraction socket healing at the infected site could not be ascertained in the model used in the abovementioned studies.…”