scholarly journals The implant‐supported Cad Cam milled bar in the severely atrophic maxilla after horizontal ridge augmentation with autogenous bone blocks

2019 ◽  
Vol 30 (S19) ◽  
pp. 528-528
Author(s):  
Andreas Papandreou ◽  
Maria Sykara ◽  
Panagiotis Ntovas ◽  
Frank Zastrow
Keyword(s):  
Autogenous Bone ◽  
Ridge Augmentation ◽  
Atrophic Maxilla ◽  
Cad Cam

scholarly journals Horizontal Ridge Augmentation Using a Xenograft Bone Substitute for Implant-Supported Fixed Rehabilitation: A Case Report with Four Years of Follow-Up

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Bruno Freitas Mello ◽  
Márcio de Carvalho Formiga ◽  
Luiz Fernando de Souza da Silva ◽  
Gustavo dos Santos Coura ◽  
Jamil Awad Shibli
Keyword(s):  
Case Report ◽  
Bone Tissue ◽  
Dental Implant ◽  
Bone Biopsy ◽  
Histological Evaluation ◽  
Autogenous Bone ◽  
High Survival ◽  
Ridge Augmentation ◽  
Implant Placement ◽  
Atrophic Maxilla

The guided bone regeneration (GBR) technique has been used to achieve optimal bone volume augmentation and allow dental implant placement in atrophic maxilla and mandible, with predictable results and high survival rates. The use of bone substitutes has reduced the necessity of autogenous bone grafts, reducing the morbidity at the donor areas and thus improving the patients’ satisfaction and comfort. This clinical case report shows a clinical and histological evaluation of the bone tissue behavior, in a case that required the horizontal augmentation of the alveolar ridge, with the use of xenograft biomaterial and further dental implant placement. After six months of healing time, six implants were placed, and a bone biopsy was done. The histological analysis depicted some fragments of the xenograft bone graft, integrated with the new-formed bone tissue.

scholarly journals Xeno-Hybrid Composite Scaffold Manufactured with CAD/CAM Technology for Horizontal Bone-Augmentation in Edentulous Atrophic Maxilla: A Short Communication

2020 ◽  
Vol 10 (8) ◽  
pp. 2659 ◽  
Author(s):  
Maria Paola Cristalli ◽  
Gerardo La Monaca ◽  
Nicola Pranno ◽  
Susanna Annibali ◽  
Giovanna Iezzi ◽  
...  
Keyword(s):  
Short Communication ◽  
Bone Structure ◽  
Bovine Bone ◽  
Ridge Augmentation ◽  
Additional Surgery ◽  
Custom Made ◽  
Atrophic Maxilla ◽  
Computer Aided ◽  
Cad Cam ◽  
Deproteinized Bovine Bone

The present short communication described a new procedure for the reconstruction of the horizontal severely resorbed edentulous maxilla with custom-made deproteinized bovine bone block, fabricated using three-dimensional imaging of the patient and computer-aided design/computer-aided manufacturing (CAD/CAM) technology. The protocol consisted of three phases. In the diagnosis and treatment planning, cone-beam computed tomographic scans of the patient were saved in DICOM (digital imaging and communication in medicine) format, anatomic and prosthetic data were imported into a dedicated diagnostic and medical imaging software, the prosthetic-driven position of the implants, and the graft blocks perfectly adapted to the residual bone structure were virtually planned. In the manufacturing of customized graft blocks, the CAD-CAM technology and the bovine-derived xenohybrid composite bone (SmartBone® on Demand - IBI SA - Industrie Biomediche Insubri SA Switzerland) were used to fabricate the grafts in the exact shape of the 3D planning virtual model. In the surgical and prosthetic procedure, the maxillary ridge augmentation with custom-made blocks and implant-supported full-arch screw-retained rehabilitation were performed. The described protocol offered some advantages when compared to conventional augmentation techniques. The use of deproteinized bovine bone did not require additional surgery for bone harvesting, avoided the risk of donor site morbidity, and provided unlimited biomaterial availability. The customization of the graft blocks reduced the surgical invasiveness, shorting operating times because the manual shaping of the blocks and its adaptation at recipient sites are not necessary and less dependent on the clinician’s skill and experience.

scholarly journals Design Techniques to Optimize the Scaffold Performance: Freeze-dried Bone Custom-made Allografts for Maxillary Alveolar Horizontal Ridge Augmentation

2020 ◽  
Author(s):  
Felice Roberto Grassi ◽  
Roberta Grassi ◽  
Leonardo Vivarelli ◽  
Dante Dallari ◽  
Marco Govoni ◽  
...  
Keyword(s):  
Clinical Success ◽  
Secondary Site ◽  
Autogenous Bone ◽  
Ridge Augmentation ◽  
Implant Placement ◽  
Freeze Dried ◽  
Custom Made ◽  
Atrophic Maxilla ◽  
Bone Level ◽  
Density Analysis

Background: The aim of the present investigation was to evaluate the clinical success of horizontal ridge augmentation in the severely atrophic maxilla (Cawood and Howell class IV) using freeze-dried custom made bone harvested from cadaver donors tibial hemiplateau and to analyze the marginal bone level gain prior dental implants placement at 9 months after bone grafting and before prosthetic rehabilitation. Methods: A 52-year-old woman received custom made bone grafts. Patient underwent CT scans 2 weeks prior and 9 months after surgery for graft volume and density analysis. Results: The clinical and radiographic bone observations showed a very low rate of resorption after bone graft and implant placement. Conclusions: The custom-made allograft material was a highly effective modality for restoring the alveolar horizontal ridge, resulting in this way to reduce the need to obtain autogenous bone from a secondary site with predictable procedure. Further studies are needed to investigate its behavior at longer time points.

scholarly journals Design Techniques to Optimize the Scaffold Performance: Freeze-dried Bone Custom-made Allografts for Maxillary Alveolar Horizontal Ridge Augmentation

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1393 ◽  
Author(s):  
Felice Roberto Grassi ◽  
Roberta Grassi ◽  
Leonardo Vivarelli ◽  
Dante Dallari ◽  
Marco Govoni ◽  
...  
Keyword(s):  
Clinical Success ◽  
Secondary Site ◽  
Autogenous Bone ◽  
Ridge Augmentation ◽  
Implant Placement ◽  
Freeze Dried ◽  
Custom Made ◽  
Atrophic Maxilla ◽  
Bone Level ◽  
Density Analysis

The purpose of the current investigation was to evaluate the clinical success of horizontal ridge augmentation in severely atrophic maxilla (Cawood and Howell class IV) using freeze-dried custom made bone harvested from the tibial hemiplateau of cadaver donors, and to analyze the marginal bone level gain prior to dental implant placement at nine months subsequent to bone grafting and before prosthetic rehabilitation. A 52-year-old woman received custom made bone grafts. The patient underwent CT scans two weeks prior and nine months after surgery for graft volume and density analysis. The clinical and radiographic bone observations showed a very low rate of resorption after bone graft and implant placement. The custom-made allograft material was a highly effective modality for restoring the alveolar horizontal ridge, resulting in a reduction of the need to obtain autogenous bone from a secondary site with predictable procedure. Further studies are needed to investigate its behavior at longer time periods.

scholarly journals Comparison of Calcium Sulfate and Bovine Collagen Barriers for Alveolar Ridge Augmentation

2014 ◽  
Vol 4 (3) ◽  
pp. 129-138
Author(s):  
Robert Spears ◽  
Ibtisam Al-Hashimi ◽  
Eric S Solomon ◽  
David G Kerns ◽  
William W Hallmon ◽  
...  
Keyword(s):  
Bone Graft ◽  
Calcium Sulfate ◽  
Autogenous Bone ◽  
Collagen Membrane ◽  
Alveolar Ridge ◽  
Bone Augmentation ◽  
Alveolar Ridge Augmentation ◽  
Ridge Augmentation ◽  
Bovine Collagen ◽  
Bone Gain

ABSTRACT Calcium sulfate is a biologically compatible osteoconductive graft material that binds underlying bone graft and provide space maintenance. The purpose of this study was to evaluate calcium sulfate as a barrier compared to a collagen membrane for augmentation of a standardized surgically created ridge defect. For this purpose, bilateral extraction of mandibular premolars was performed on six foxhounds (Canis familiaris). Eight weeks later, a standardized osseous ridge defects (24 total) were created using a 6 mm trephine. The study was approved by the Institutional Animal Care and Use Committee (IACUC) at Baylor College of Dentistry. The osseous defects were allocated into three groups (8 defects each): group 1 received autogenous bone graft covered with collagen membrane (CM); group 2 received autogenous bone graft covered with calcium sulfate barrier (CS), and group 3 was used as control and did not receive bone augmentation and was used as control. The animals were sacrificed after 12 weeks following bone augmentation and sites were evaluated histologically for total ridge width, percentage of bone gain and cortical bone thickness. Results All sites exhibited bony fill within the defect. Analysis of variance did not reveal statistically significant difference in the mean total bone gain among CM, CS, and control groups (12.2,11.6, and 11.9) mm2, respectively, p = 0.875. Conclusion Calcium sulfate does not appear to improve bone regeneration in an osseous defect. How to cite this article Heaton ML, Kerns DG, Hallmon WW, Kessler HP, Spears R, Solomon ES, Al-Hashimi I. Comparison of Calcium Sulfate and Bovine Collagen Barriers for Alveolar Ridge Augmentation. J Contemp Dent 2014;4(3):129-138.

scholarly journals Horizontal-guided Bone Regeneration using a Titanium Mesh and an Equine Bone Graft

2015 ◽  
Vol 16 (2) ◽  
pp. 154-162 ◽  
Author(s):  
Danilo Alessio Di Stefano ◽  
Gian Battista Greco ◽  
Lorenzo Cinci ◽  
Laura Pieri
Keyword(s):  
Bone Graft ◽  
Bone Regeneration ◽  
Guided Bone Regeneration ◽  
Bone Sample ◽  
Successful Outcome ◽  
Autogenous Bone ◽  
Titanium Mesh ◽  
Ridge Augmentation ◽  
Stereolithographic Model ◽  
Equine Bone

ABSTRACT Aim The present work describes a horizontal ridge augmentation in which a titanium mesh was preshaped by adapting it to a stereolithographic model of the patient's jaw that was fabricated from CT scans. Background Guided bone regeneration (GBR) involves covering the augmentation site with a long-lasting barrier to protect it from the invasion of surrounding soft tissues. Among barriers, titanium meshes may provide a successful outcome, but the intraoperatory time needed to shape them is a disadvantage. Case description The 54-year-old patient, missing the right mandibular second bicuspid, first molar, and second molar, had her atrophic ridge augmented with a 30:70 mixture of autogenous bone and equine, enzyme-deantigenic collagenpreserved bone substitute. Two conical implants were inserted concomitantly in the second bicuspid and first molar positions, and the site was protected with the preshaped mesh. Four months later, the titanium mesh was retrieved, a bone sample was collected, and histological and histomorphometric analyses were performed. Provisional and definitive prostheses were then delivered, and follow-up controls were performed for up to 24 months. Conclusion Preshaping the mesh on a model of the patient's mandible shortened the surgical time and enabled faster mesh placement. Two years after surgery, the implants were perfectly functional, and the bone width was stable over time as shown by radiographic controls. Histological analysis of the bone sample showed the heterologous biomaterial to be biocompatible and undergoing advanced remodeling and replacement with newly formed bone. Clinical significance Preshaping a titanium mesh over a stereolithographic model of the patient's jaw allowed for a significant reduction of the intraoperative time and may be therefore, advisable in routine practice. How to cite this article Di Stefano DA, Greco GB, Cinci L, Pieri L. Horizontal-guided Bone Regeneration using a Titanium Mesh and an Equine Bone Graft. J Contemp Dent Pract 2015;16(2):154-162.

Sign in / Sign up

Export Citation Format

Share Document