scholarly journals Alveolar Ridge Preservation Using Xenogeneic Collagen Matrix and Bone Allograft

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Andreas O. Parashis ◽  
Charalampos J. Kalaitzakis ◽  
Dimitris N. Tatakis ◽  
Konstantinos Tosios
Keyword(s):  
Bone Allograft ◽  
Immunohistochemical Analysis ◽  
Collagen Matrix ◽  
Normal Mucosa ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Keratinized Tissue ◽  
Alveolar Ridge Preservation ◽  
Freeze Dried ◽  
Atraumatic Extraction

Alveolar ridge preservation (ARP) has been shown to prevent postextraction bone loss. The aim of this report is to highlight the clinical, radiographic, and histological outcomes following use of a bilayer xenogeneic collagen matrix (XCM) in combination with freeze-dried bone allograft (FDBA) for ARP. Nine patients were treated after extraction of 18 teeth. Following minimal flap elevation and atraumatic extraction, sockets were filled with FDBA. The XCM was adapted to cover the defect and 2-3 mm of adjacent bone and flaps were repositioned. Healing was uneventful in all cases, the XCM remained in place, and any matrix exposure was devoid of further complications. Exposed matrix portions were slowly vascularized and replaced by mature keratinized tissue within 2-3 months. Radiographic and clinical assessment indicated adequate volume of bone for implant placement, with all planned implants placed in acceptable positions. When fixed partial dentures were placed, restorations fulfilled aesthetic demands without requiring further augmentation procedures. Histological and immunohistochemical analysis from 9 sites (4 patients) indicated normal mucosa with complete incorporation of the matrix and absence of inflammatory response. The XCM + FDBA combination resulted in minimal complications and desirable soft and hard tissue therapeutic outcomes, suggesting the feasibility of this approach for ARP.

Prospective Clinical and Radiographic Study of Alveolar Ridge Preservation Combining Freeze-Dried Bone Allograft With Two Xenogeneic Collagen Matrices

2016 ◽  
Vol 87 (4) ◽  
pp. 416-425 ◽  
Author(s):  
Andreas O. Parashis ◽  
Charles E. Hawley ◽  
Paul C. Stark ◽  
Rumpa Ganguly ◽  
James B. Hanley ◽  
...  
Keyword(s):  
Bone Allograft ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Radiographic Study ◽  
Collagen Matrices ◽  
Alveolar Ridge Preservation ◽  
Freeze Dried

scholarly journals A Comparison between Primary and Secondary Flap Coverage in Ridge Preservation Procedures: A Pilot Randomized Controlled Clinical Trial

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Majdi A. Aladmawy ◽  
Zuhair S. Natto ◽  
Bjorn Steffensen ◽  
Paul Levi ◽  
Wai Cheung ◽  
...  
Keyword(s):  
Bone Allograft ◽  
Mean Difference ◽  
Controlled Clinical Trial ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Dimensional Changes ◽  
Flap Technique ◽  
Keratinized Tissue ◽  
Freeze Dried ◽  
Significant Difference

Aims. To assess the bone dimensional changes after extraction and alveolar ridge preservation (ARP) using primary coverage (closed flap technique, CFT) or healing by secondary intention (open flap technique, OFT). Materials and Methods. Ten patients (split mouth design) were planned for extraction and ARP. All sites received ARP with freeze-dried bone allograft (FDBA) and nonresorbable membrane after extraction. Clinical standardized measurements were used to assess the dimensional alterations of the alveolar ridge. Results. All patients completed the study, and a total of 20 sites were randomized to CFT or OFT group. Center height (mean difference of 8.1 mm, SD =1.9 CFT, and 7.5 mm, SD= 1.8 OFT) and buccal height (mean difference of 0.8 mm, SD =1.0 CFT, and 0.3 mm, SD= 1.1 OFT) were significantly different within the same group. However, there was no statistically significant difference between groups. In the OFT group, the keratinized tissue width was higher and the pain VAS scores at 24 hours were lower compared with the CFT (p = 0.004 and p = 0.006, respectively). Conclusions. Leaving the flap open did not have any effects on the dimensional changes of bone height or width. However, there was a wider band of keratinized tissue and less pain with the CFT compared with the OFT. The study protocol was registered at ClinicalTrials.gov, Identifier NCT03136913.

scholarly journals Alveolar Ridge Preservation Using Autogenous Dentin Graft versus Demineralized Freeze-dried Bone Allograft (DFDBA): A Case Report

2021 ◽  
Vol 2 (2) ◽  
pp. 18-22
Author(s):  
César Esquivel-Chirino ◽  
Vanessa Vargas-Romero ◽  
Gerardo Rodríguez-Torres ◽  
Verónica Villatoro-Ugalde ◽  
María Guadalupe Rivas-Fonseca ◽  
...  
Keyword(s):  
Case Report ◽  
Tooth Extraction ◽  
Bone Allograft ◽  
Ceramic Materials ◽  
Ridge Preservation ◽  
Allogeneic Bone ◽  
Alveolar Ridge ◽  
Alveolar Ridge Preservation ◽  
Freeze Dried ◽  
Immunogenic Properties

Tooth extraction is a surgical procedure that is performed due to pulp and periapical pathology, periodontal disease, or teeth that are not deemed to be prosthetically or endodontically restorable. Following tooth extraction, bone resorption and vertical or horizontal defects occur. Traditionally, ridge preservation warrants the use of different agents such as autografts, allografts, xenografts, and mineral or ceramic materials. Autogenous dentin grafts are alternative to ridge preservation with osteoconductive, osteoinductive, and non-immunogenic properties to generate bone formation. The aim of the case report was to evaluate and compare clinical and histological outcomes using an autogenous dentin graft versus an allogeneic bone graft (DFDBA) as an alternative for ridge preservation.

Soft Tissue changes after using Collagen Matrix Seal or Collagen Sponge with Allograft in Ridge Preservation:A Randomized Controlled Volumetric Study

2020 ◽  
Author(s):  
Zuhair Natto ◽  
Andreas Parashis ◽  
Y. Natalie Jeong
Keyword(s):  
Soft Tissue ◽  
Soft Tissues ◽  
Collagen Matrix ◽  
Collagen Sponge ◽  
Tissue Loss ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Alveolar Ridge Preservation ◽  
Freeze Dried ◽  
Significant Difference

The objective of this study is to assess alterations in buccal soft tissue contour after alveolar ridge preservation (ARP) using either a collagen matrix seal (CMS) or a collagen sponge (CS) as barriers with freeze-dried bone allograft (FDBA). Participants (28 total) were randomly assigned into the CMS group or the CS group (14 each). The same clinical steps were used in both barriers. Cast models were taken at the baseline and at 4 months, then both models were optically scanned and digitally superimposed. Volumetric, surface, and distance-adjusted measurements were calculated to assess buccal soft tissues alterations. Surface area and volume loss in the CMS group were observed to be 71.44±1189.09 mm 2 and 239.58±231.89 mm 3 . The CS group showed measurements of 139.56±557.92 mm 2 and 337.23±310.18 mm 3, . Mean buccal soft tissue loss and minimum-maximum distance loss were less in the CMS (0.88±0.52 mm, and 0.2-2.15 mm respectively), compared with the CS group (1.63±1.03 mm and 0.3-3.68 mm respectively) with no statistically significant difference between the groups (p=0.2742). Both alveolar ridge preservation barriers were unable to entirely prevent soft tissue contour changes after extraction. However, collagen matrix seal application was slightly better in minimizing the amount of soft tissue reduction compared to the collagen sponge. ClinicalTrials.gov (NCT02697890).

Alveolar Ridge Preservation Using Allografts and Dense Polytetrafluoroethylene Membranes With Open Membrane Technique in Unhealthy Extraction Socket

2017 ◽  
Vol 43 (4) ◽  
pp. 267-273 ◽  
Author(s):  
Gi-Beom Cheon ◽  
Kyung Lhi Kang ◽  
Mi-Kyung Yoo ◽  
Jeoung-A Yu ◽  
Dong-Woon Lee
Keyword(s):  
Fibrous Tissue ◽  
Control Group ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Alveolar Ridge Preservation ◽  
Membrane Technique ◽  
Freeze Dried ◽  
The Mean ◽  
Open Membrane

We evaluated the effectiveness of the open membrane technique using a high-density polytetrafluoroethylene (dPTFE) membrane with freeze-dried bone allografts in damaged sockets for alveolar ridge preservation (ARP). This retrospective study included 26 sites from 20 patients who had received ARP for the placement of dental implants. ARP was conducted using dPTFE membrane with allografts on the day of extraction without primary closure. When the membrane was removed after 4 weeks, the newly formed reddish tissue at the grafted site was checked (first outcome, clinical evaluation). Four months after membrane removal, a core biopsy was performed from the center of the grafted site before implant placement (second outcome, histomorphometric evaluation). Radiographic measurements of alveolar bone changes between implant prosthesis delivery and the 1-year follow-up were obtained (third outcome, radiographic evaluation). A total of 23 sites from 18 patients had no complications during the follow-up period. Three sites from two patients were excluded because of early membrane removal. Newly formed reddish tissue was found at 15 sites, and partially formed tissue was found at 8 sites. Although we were unable to harvest bone core from all sites, histomorphometric analysis in 11 patients indicated that the mean area of new bone was 28.48% ± 6.60%, that of the remaining graft particle was 27.68% ± 9.18%, and that of fibrous tissue was 43.84% ± 6.98%. The mean loss of marginal bone was 0.13 ± 0.06 mm at the mesial area and 0.15 ± 0.06 mm at the distal area, as assessed using radiographic evaluations. The results of this nonrandomized study suggest that this technique may be an appropriate procedure for ARP. Further studies with a control group and more subjectives can be designed based on this study.

scholarly journals The effect of different soft-tissue management techniques for alveolar ridge preservation: a randomized controlled clinical trial

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Colline Papace ◽  
Christopher Büsch ◽  
Oliver Ristow ◽  
Martin Keweloh ◽  
Jürgen Hoffmann ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Connective Tissue ◽  
Collagen Matrix ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Soft Tissue Management ◽  
Gingival Thickness ◽  
Connective Tissue Graft ◽  
Alveolar Ridge Preservation ◽  
Management Techniques

Abstract Purpose For alveolar ridge preservation, various treatment protocols have been described. While most studies focus on the effect of the bone graft material, the aim of this study was to analyze the influence of different soft-tissue management techniques on the soft and hard tissue. Methods A total of 20 maxillary extraction sockets were grafted with an anorganic xenogenic bone graft and then randomly treated with either a combined epithelialized-subepithelial connective tissue graft (CECG) or a porcine collagen matrix (CM) placed in labial and palatal tunnels. Measurements of soft-tissue thickness were performed at tooth extraction (T0), implant insertion (T1) and second stage surgery (T2). Results In the CECG group, gingival thickness was 1.18 ± 0.56 mm (T0), 1.29 ± 0.26 mm (T1) and 1.2 ± 0.32 mm (T3). In the CM group, the measurements were 1.24 ± 0.50 mm (T0), 1.6 ± 0.6 mm (T1) and 1.7 ± 1.06 mm. Thus, there was an overall increase in gingival thickness from T0 to T2 of 0.02 ± 0.66 mm (CECG) compared to 0.46 ± 0.89 mm (CM). The thickness of keratinized soft-tissue was 3.91 ± 1.11 mm (CECG) and 4.76 ± 1.48 mm (CM) before extraction and 3.93 ± 1.17 mm (CECG) and 4.22 mm ± 1.26 mm (CM) at implant follow-up. Mean peri-implant probing depths were 3.15 ± 1.39 mm (CECG) and 3.41 ± 0.99 mm (CM). Conclusions After ridge preservation, comparable soft-tissue parameters were observed in both groups, whether treated with a collagen matrix or a combined autologous connective tissue graft.

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