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Asano A, Xavier SP, Silva ER, Morinaga K, Botticelli D, Nakajima Y, Baba S. Critical-sized marginal defects around implants treated with xenografts in rabbits. Oral Maxillofac Surg 2024; 28:827-838. [PMID: 38285089 DOI: 10.1007/s10006-024-01216-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 01/19/2024] [Indexed: 01/30/2024]
Abstract
BACKGROUND Healing of critical-size defects is a well-known problem that has been challenged in several studies. The aim of the experiment was to evaluate bone formation and osseointegration of implants installed in critical defects of the mandibular body simultaneously grafted with Bio-Oss® or Cerabone®. MATERIAL AND METHODS Defects, 10 mm wide and 3 mm deep, were prepared at both lateral aspects of the mandible in 12 rabbits. One implant was installed in the center of the defect, and bovine xenografts produced either at low (Bio-Oss®; Low-T) or high (Cerabone®; High-T) temperatures were used to fill the defects. A collagen membrane was placed to cover the sites. Healing was evaluated 10 weeks after surgery. RESULTS In both groups, most sites showed optimal healing with closure of the coronal entrance of the defects. However, residual defects occupied by soft tissues and biomaterial particles were observed, even though generally limited to some regions of the defect. Osseointegration of the implant surface in the region of the defect was poor in both groups. CONCLUSIONS Circumferential marginal critical-size defects around implants filled with bovine xenografts presented regions with a complete healing in both groups. However, the healing was not complete at all regions in most defects; therefore, a complete optimal healing of critical-size marginal defects cannot be predicted.
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Affiliation(s)
- Akihisa Asano
- Department of Oral Implantology, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, 573-1121, Japan
| | - Samuel Porfirio Xavier
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Av. Do Café - Subsetor Oeste - 11 (N-11), Ribeirão Preto, SP, 14040-904, Brazil
| | - Erick Ricardo Silva
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Av. Do Café - Subsetor Oeste - 11 (N-11), Ribeirão Preto, SP, 14040-904, Brazil
| | - Kenzo Morinaga
- Department of Oral Implantology, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, 573-1121, Japan
| | - Daniele Botticelli
- Department of Oral Implantology, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, 573-1121, Japan.
- ARDEC Academy, 47923, Rimini, Italy.
| | - Yasushi Nakajima
- Department of Oral Implantology, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, 573-1121, Japan
| | - Shunsuke Baba
- Department of Oral Implantology, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, 573-1121, Japan
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Beitlitum I, Rayyan F, Pokhojaev A, Tal H, Sarig R. A novel micro-CT analysis for evaluating the regenerative potential of bone augmentation xenografts in rabbit calvarias. Sci Rep 2024; 14:4321. [PMID: 38383533 PMCID: PMC10881464 DOI: 10.1038/s41598-024-54313-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 02/11/2024] [Indexed: 02/23/2024] Open
Abstract
Guided Bone Regeneration is a common procedure, yet, as new grafting materials are being introduced into the market, a reliable evaluation method is required. Critical size defect in animal models provides an accurate simulation, followed by histological sections to evaluate the new bone formation. However, histology is destructive, two-dimensional and technique-sensitive. In this study we developed a novel volumetric Micro-CT analysis to quantify new bone formation characteristics. Eight adult female New Zealand white rabbits were subjected to calvarial critical-size defects. Four 8 mm in diameter circular defects were preformed in each animal, to allow random allocation of four treatment modalities. All calvarias were scanned using Micro-CT. Each defect was segmented into four equal parts: pristine bone, outer, middle, and inner. Amira software (v. 6.3, www.fei.com ) was used to calculate the new bone volume in each region and compare it to that of the pristine bone. All grafting materials demonstrated that new bone formation decreased as it moved inward. Only the inner region differed across grafting materials (p = 0.001). The new Micro-CT analysis allowed us to divide each defect into 3D regions providing better understanding of the bone formation process. Amongst the various advantages of the Micro-CT, it enables us to quantify the graft materials and the newly formed bone independently, and to describe the defect morphology in 3D (bi- vs. uni-cortical defects). Providing an insight into the inner region of the defect can better predict the regenerative potential of the bone augmentation graft material. Therefore, the suggested Micro-CT analysis is beneficial for further developing of clinical approaches.
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Affiliation(s)
- Ilan Beitlitum
- Department of Periodontology and Dental Implantology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Fatma Rayyan
- Department of Periodontology and Dental Implantology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Ariel Pokhojaev
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Haim Tal
- Department of Periodontology and Dental Implantology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Rachel Sarig
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel.
- Shmunis Family Anthropology Institute, the Dan David Center for Human Evolution and Biohistory Research, Faculty of Medicine, Tel-Aviv University, Tel Aviv, 6997801, Israel.
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Zahedi L, Mohammadi M, Kalantari M, Arabsolghar M, Ranjbar H. Horizontal ridge augmentation with particulate cortico-cancellous freeze-dried bone allograft alone or combined with injectable-platelet rich fibrin in a randomized clinical trial. Clin Implant Dent Relat Res 2024; 26:127-137. [PMID: 38093400 DOI: 10.1111/cid.13295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 11/08/2023] [Accepted: 11/11/2023] [Indexed: 02/09/2024]
Abstract
OBJECTIVES The objective of this study is to assess the effectiveness of horizontal ridge augmentation using FDBA in combination with injectable-platelet rich fibrin (i-PRF) versus FDBA alone. To fulfill this aim, the radiographic and histomorphometric outcomes are compared. METHOD The study involved 41 patients who had horizontal alveolar ridge defects categorized as either B (2.5-7 mm) or C (0-2.5 mm). The control group received FDBA alone (n = 20), while the test group received FDBA in combination with i-PRF (n = 21). The horizontal dimensions of the alveolar ridge were measured at 0, 2, 4, and 6 mm from the bone crest using CBCT before and 6 months after alveolar ridge augmentation. In the second-stage surgery, 24 biopsies were taken from the augmented bone - 13 from the control group and 11 from the test group, and were examined histologically and histomorphometrically. The data were analyzed using Pearson correlation coefficient, chi-square, paired-t, and two-sample t tests. RESULTS There was no significant difference (p > 0.05) in the increase of mean ridge width between the test group and the control group after 6 months at distances of 0, 2, 4, and 6 mm from the crest, with differences of -0.28, 0.12, 0.52, and 1.04 mm, respectively. However, the amount of newly formed bone and material residues was significantly higher in the FDBA + i-PRF group compared to the FDBA alone group (45.01% and 13.06% vs 54.03% and 8.48%, respectively). There was no significant difference in the amount of soft tissue between the two groups (41.02% and 37.5%, p > 0.05). CONCLUSION The study found that there was no statistically significant difference in the increase of horizontal ridge width between the FDBA + i-PRF group and the FDBA group. However, the histomorphometric analysis revealed that the FDBA + i-PRF group had a higher proportion of newly formed bone, less connective tissue, and fewer residual particles. This suggests a superior quality of bone formation compared to the FDBA group.
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Affiliation(s)
- Leili Zahedi
- Oral and Dental Diseases Research Center, Department of Periodontics, Kerman Dental School, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Mohammadi
- Oral and Dental Diseases Research Center, Department of Periodontics, Kerman Dental School, Kerman University of Medical Sciences, Kerman, Iran
| | - Mahsa Kalantari
- Department of Oral and Maxillofacial Pathology, Oral and Dental Diseases Research Center, Kerman Dental School, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohaddeseh Arabsolghar
- Oral and Dental Diseases Research Center, Department of Periodontics, Kerman Dental School, Kerman University of Medical Sciences, Kerman, Iran
| | - Hadi Ranjbar
- Mental Health Research Center, Psychosocial Health Research Institute, Iran University of Medical Sciences, Tehran, Iran
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Esfandiari S, Amid R, Kadkhodazadeh M, Kheiri A. Comparison of the Volume and Histological Properties of Newly Formed Bone after the Application of Three Types of Bone Substitutes in Critical-Sized Bone Defects. J Long Term Eff Med Implants 2024; 34:17-27. [PMID: 38305367 DOI: 10.1615/jlongtermeffmedimplants.2023046281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
This study aimed to compare the volume and quality of the newly formed bone following application of two types of xenografts and one synthetic material in bone defects in rabbit calvaria from histological and micro-CT aspects. Four 8-mm defects were created in 12 rabbit calvaria. Three defects were filled with bone substitutes and one was left unfilled as the control group. The newly formed bone was evaluated histologically and also by micro-CT at 8 and 12 weeks after the intervention. The percentage of osteogenesis was comparable in histomor-phometric assessment and micro-CT. Histological analysis showed that the percentage of the newly formed bone was 10.92 ± 5.17%, 14.70 ± 11.02%, 11.47 ± 7.04%, and 9.45 ± 5.18% in groups bovine 1, bovine 2, synthetic, and negative control, respectively after 8 weeks. These values were 33.70 ± 11.48%, 26.30 ± 18.05%, 22.92 ± 6.30%, and 14.82 ± 8.59%, respectively at 12 weeks. The difference in the percentage of the new bone formation at 8 and 12 weeks was not significant in any group (P > 0.05) except for bovine 1 group (P < 0.05). Micro-CT confirmed new bone formation in all groups but according to the micro-CT results, the difference between the control and other groups was significant in this respect (P < 0.05). All bone substitutes enhanced new bone formation compared with the control group. Micro-CT assessment yielded more accurate and different results compared with histological assessment.
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Affiliation(s)
- Shiva Esfandiari
- Department of Biology, School of Science, Shahid Beheshti University, Tehran, Iran
| | - Reza Amid
- Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahdi Kadkhodazadeh
- Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Aida Kheiri
- Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Zhu G, Zhou Y, Xu Y, Wang L, Han M, Xi K, Tang J, Li Z, Kou Y, Zhou X, Feng Y, Gu Y, Chen L. Functionalized acellular periosteum guides stem cell homing to promote bone defect repair. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023; 34:2000-2020. [PMID: 37071056 DOI: 10.1080/09205063.2023.2204779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 04/17/2023] [Indexed: 04/19/2023]
Abstract
The periosteum plays a key role in bone tissue regeneration, especially in the promotion and protection of new bones. However, among the bone repair materials, many biomimetic artificial periosteum lack the natural periosteal structure, stem cells, and immunoregulation required for bone regeneration. In this study, we used natural periosteum to produce acellular periosteum. To retain the appropriate cell survival structure and immunomodulatory proteins, we grafted the functional polypeptide SKP on the surface collagen of the periosteum via an amide bond, providing the acellular periosteum with the ability to recruit mesenchymal stem cells. Thus, we developed a biomimetic periosteum (DP-SKP) with the ability to promote stem cell homing and immunoregulation in vivo. Compared to the blank and simple decellularized periosteum groups, DP-SKP was more conducive to stem cell adhesion, growth, and osteogenic differentiation in vitro. Additionally, compared with the other two groups, DP-SKP significantly promoted mesenchymal stem cell homing to the periosteal transplantation site, improved the bone immune microenvironment, and accelerated new lamellar bone formation in the critical size defect of rabbit skulls in vivo. Therefore, this acellular periosteum with a mesenchymal stem cell homing effect is expected to be used as an extracellular artificial periosteum in clinical practice.
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Affiliation(s)
- Guoqing Zhu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
- Department of Orthopedics, Suzhou Municipal Hospital, Suzhou, China
| | - Yidi Zhou
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yichang Xu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Lingjun Wang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Meng Han
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
- Department of Orthopedics, Xuzhou Central Hospital, Xuzhou, China
| | - Kun Xi
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jincheng Tang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ziang Li
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yu Kou
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xindie Zhou
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou, China
| | - Yu Feng
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yong Gu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Liang Chen
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
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Mantovani R, Fernandes Y, Meza-Mauricio J, Reino D, Gonçalves LS, Sousa LG, Almeida AL, Faveri M, Scombatti de Souza S. Influence of Different Porosities of Titanium Meshes on Bone Neoformation: Pre-Clinical Animal Study with Microtomographic and Histomorphometric Evaluation. J Funct Biomater 2023; 14:485. [PMID: 37888150 PMCID: PMC10607573 DOI: 10.3390/jfb14100485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/12/2023] [Accepted: 09/18/2023] [Indexed: 10/28/2023] Open
Abstract
The aim of this study was to evaluate the influence of different types of porosity of titanium meshes on the bone neoformation process in critical defects surgically created in rat calvaria, by means of microtomographic and histomorphometric analyses. Defects of 5 mm in diameter were created in the calvaria of 36 rats, and the animals were randomly treated and divided into the following groups (6 animals per group): NCOG (negative control, only blood clot), TEMG (Polytetrafluoroethylene-PTFE-membrane), SPTMG (small pore titanium mesh), SPMMG (small pore mesh + PTFE), LPTMG (large pore titanium mesh), and LPMMG (large pore mesh + PTFE). After 60 days, the animals were sacrificed, and the bone tissue formed was evaluated with micro-CT and histomorphometry. The data were compared using an ANOVA followed by the Tukey post-test (p ≤ 0.05). The microtomographic results showed that the SPTMG group presented the highest numerical value for bone volume/total volume (22.24 ± 8.97), with statistically significant differences for all the other groups except LPTMG. Considering the histomorphometric evaluation, groups with only porous titanium meshes showed higher values compared to the groups that used the PTFE membrane and the negative control. The SPTMG group presented higher values in the parameters of area (0.44 mm2 ± 0.06), extension (1.19 mm2 ± 0.12), and percentage (7.56 ± 1.45%) of neoformed bone. It was concluded that titanium mesh with smaller pores showed better results and that the association of PTFE membranes with titanium meshes did not improve the outcomes, suggesting a correlation between mesh porosity and underlying bone repair.
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Affiliation(s)
- Rafael Mantovani
- Department of Basic and Oral Biology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto 14040-904, SP, Brazil; (R.M.); (L.G.S.)
| | - Ytalo Fernandes
- Department of Dentistry, Faculty Unicamps Goiânia, Rua 210, Setor Coimbra 386, Goiânia 74535-280, GO, Brazil;
| | - Jonathan Meza-Mauricio
- Department of Periodontology, Universidad Cientifica del Sur, Calle Cantuarias 398, Lima 15048, Miraflores, Peru;
| | - Danilo Reino
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Av do Café, s/n., Ribeirao Preto 14040-904, SP, Brazil; (D.R.); (L.S.G.); (A.L.A.)
| | - Laura Sanches Gonçalves
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Av do Café, s/n., Ribeirao Preto 14040-904, SP, Brazil; (D.R.); (L.S.G.); (A.L.A.)
| | - Luiz Gustavo Sousa
- Department of Basic and Oral Biology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto 14040-904, SP, Brazil; (R.M.); (L.G.S.)
| | - Adriana Luisa Almeida
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Av do Café, s/n., Ribeirao Preto 14040-904, SP, Brazil; (D.R.); (L.S.G.); (A.L.A.)
| | - Marcelo Faveri
- Independent Researcher, Guarulhos 07072-000, SP, Brazil;
| | - Sergio Scombatti de Souza
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Av do Café, s/n., Ribeirao Preto 14040-904, SP, Brazil; (D.R.); (L.S.G.); (A.L.A.)
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Ma Z, Guo X, Zhang J, Jiang Q, Liang W, Meng W, Chen S, Zhu Y, Ye C, Jia K. Evaluation of safety and efficacy of the bone marrow mesenchymal stem cell and gelatin-nano-hydroxyapatite combination in canine femoral defect repair. Front Vet Sci 2023; 10:1162407. [PMID: 37415965 PMCID: PMC10320857 DOI: 10.3389/fvets.2023.1162407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 06/06/2023] [Indexed: 07/08/2023] Open
Abstract
Femoral shaft fracture is a common bone trauma in dogs. The limitation of mesenchymal stem cells in bone defect applications is that the cell suspension cannot be fixed to the bone defect site. In the study, our objective was to substantiate the combined application of canine bone marrow mesenchymal stem cells (cBMSCs) and gelatin-nano-hydroxyapatite (Gel-nHAP) and evaluate its therapeutic effect on bone defect diseases in dogs. Experiments were performed to evaluate the following: (1) the porosity of Gel-nHAP; (2) the adhesion of cBMSCs to Gel-nHAP; and (3) the effect of Gel-nHAP on cBMSC proliferation. The efficacy and safety of the combination of cBMSC and Gel-nHAP in the repair of femoral shaft defects were evaluated in animal experiments. The results showed that Gel-nHAP supported the attachment of cBMSCs and exhibited good biocompatibility. In the animal bone defect repair experiment, significant cortical bone growth was observed in the Gel-nHAP group at week 8 (p < 0.05) and in the cBMSCs-Gel-nHAP group at week 4 (p < 0.01). We demonstrated that Gel-nHAP could promote the repair of bone defects, and the effect of cBMSC-Gel-nHAP on the repair of bone defects was profound.
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Affiliation(s)
- Zihang Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Xiaoying Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Jun Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
- Guangdong Polytechnic of Science and Trade, Guangzhou, China
| | - Qifeng Jiang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Wuying Liang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Wenxin Meng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Shuaijiang Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Yufan Zhu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Cundong Ye
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
- College of Tropical Agriculture and Forestry, Guangdong Agriculture Industry Business Polytechnic, Guangzhou, China
| | - Kun Jia
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
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Bone Regeneration Effect of Nanochitosan with or without Temporally-controlled Release of Dexamethasone. J Endod 2023; 49:496-503. [PMID: 36898664 DOI: 10.1016/j.joen.2023.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/18/2023] [Accepted: 03/02/2023] [Indexed: 03/12/2023]
Abstract
INTRODUCTION Chitosan is a cationic biopolymer and its modification as a nanoparticle, as well as loading a corticosteroid on it, may enhance its bone regenerative effect. The aim of this study was to investigate the bone regenerative effect of nanochitosan with or without dexamethasone. METHODS Under general anesthesia, four cavities were created in the calvarium of 18 rabbits and filled with either nanochitosan, nanochitosan with a temporally-controlled release of dexamethasone (nanochitosan+dexamethasone), an autograft, or left unfilled (control). The defects were then covered with a collagen membrane. The rabbits were randomly divided into 2 groups and were sacrificed at 6 or 12 weeks post-surgery. The new bone type, osteogenesis pattern, foreign body reaction, as well as the type and severity of the inflammatory response were evaluated histologically. The amount of new bone was determined using histomorphometry and cone-beam computed tomography (CBCT). A one-way ANOVA with repeated-measures was performed to compare results between the groups at each interval. A T-test and Chi-square were also conducted to analyze changes in variables between the two intervals. RESULTS Nanochitosan and the combination of nanochitosan and dexamethasone significantly increased the combination of woven and lamellar bone (P=0.007). No sample showed a foreign body reaction or any acute or severe inflammation. Chronic inflammation was significantly decreased in number (P=0.002) and severity (P=0.003) over time. There was no significant difference between the extent and pattern of osteogenesis amongst the four groups, as evaluated by histomorphometry and CBCT at each interval. CONCLUSION Nanochitosan and nanochitosan+dexamethasone were comparable to the gold standard of autograft regarding the type and severity of inflammation, as well as the level and pattern of osteogenesis, yet they induced more woven and lamellar bone.
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Zhang S, Zhang X, Li Y, Mao X, Liu R, Qi Y, Lee ES, Jiang HB. Clinical Reference Strategy for the Selection of Treatment Materials for Maxillofacial Bone Transplantation: A Systematic Review and Network Meta-Analysis. Tissue Eng Regen Med 2022; 19:437-450. [PMID: 35532735 PMCID: PMC9130380 DOI: 10.1007/s13770-022-00445-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/27/2021] [Accepted: 11/01/2021] [Indexed: 10/18/2022] Open
Abstract
Bone graft materials have mixed effects of bone repair in the field of oral maxillofacial surgery. The qualitative analyses performed by previous studies imply that autogenous odontogenic materials and autogenous bone have similar effects on bone repair in clinical jaw bone transplantation. This retrospective systematic assessment and network meta-analysis aimed to analyze the best effect of clinical application of autogenous odontogenic materials and autogenous, allogeneic, and xenogeneic bone grafts in bone defect repair. A systematic review was performed by searching the PubMed, Cochrane Library, and other journal databases using selected keywords and Medical Subject Headings search terms. 10 Papers (n = 466) that met the inclusion criteria were selected. The assessment of heterogeneity did not reveal any overall statistical difference or heterogeneity (P = 0.051 > 0.05), whereas the comparison between autogenous and allogeneic bone grafts revealed local heterogeneity (P = 0.071 < 0.1). Risk of bias revealed nine unclear studies and one high-risk study. The overall consistency was good (P = 0.065 > 0.05), and the local inconsistency test did not reveal any inconsistency. The publication bias was good. The confidence regarding the ranking of bone graft materials after GRADE classification was moderate. The effects on bone repair in the descending order were as follows: autogenous odontogenic materials, xenogeneic bone, autogenous bone, and allogeneic bone. This result indicates that the autogenous odontogenic materials displayed stronger effects on bone repair compared to other bone graft materials. Autogenous odontogenic materials have broad development prospects in oral maxillofacial surgery.
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Affiliation(s)
- Shuxin Zhang
- The CONVERSATIONALIST club, School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, 271016, Shandong, China
| | - Xinyi Zhang
- The CONVERSATIONALIST club, School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, 271016, Shandong, China
| | - Yanli Li
- The CONVERSATIONALIST club, School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, 271016, Shandong, China
| | - Xuran Mao
- The CONVERSATIONALIST club, School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, 271016, Shandong, China
| | - Rui Liu
- The CONVERSATIONALIST club, School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, 271016, Shandong, China
| | - Yanxin Qi
- The CONVERSATIONALIST club, School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, 271016, Shandong, China
| | - Eui-Seok Lee
- Department of Oral and Maxillofacial Surgery, Graduate School of Clinical Dentistry, Korea University, Seoul, 08308, Korea.
| | - Heng Bo Jiang
- The CONVERSATIONALIST club, School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, 271016, Shandong, China.
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10
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Malagón-Escandón A, Hautefeuille M, Jimenez-Díaz E, Arenas-Alatorre J, Saniger JM, Badillo-Ramírez I, Vazquez N, Piñón-Zarate G, Castell-Rodríguez A. Three-Dimensional Porous Scaffolds Derived from Bovine Cancellous Bone Matrix Promote Osteoinduction, Osteoconduction, and Osteogenesis. Polymers (Basel) 2021; 13:4390. [PMID: 34960941 PMCID: PMC8705055 DOI: 10.3390/polym13244390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/28/2021] [Accepted: 12/01/2021] [Indexed: 11/30/2022] Open
Abstract
The use of three-dimensional porous scaffolds derived from decellularized extracellular matrix (ECM) is increasing for functional repair and regeneration of injured bone tissue. Because these scaffolds retain their native structures and bioactive molecules, in addition to showing low immunogenicity and good biodegradability, they can promote tissue repair and regeneration. Nonetheless, imitating these features in synthetic materials represents a challenging task. Furthermore, due to the complexity of bone tissue, different processes are necessary to maintain these characteristics. We present a novel approach using decellularized ECM material derived from bovine cancellous bone by demineralization, decellularization, and hydrolysis of collagen to obtain a three-dimensional porous scaffold. This study demonstrates that the three-dimensional porous scaffold obtained from bovine bone retained its osteoconductive and osteoinductive properties and presented osteogenic potential when seeded with human Wharton's jelly mesenchymal stromal cells (hWJ-MSCs). Based on its characteristics, the scaffold described in this work potentially represents a therapeutic strategy for bone repair.
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Affiliation(s)
- Alda Malagón-Escandón
- Facultad de Medicina, UNAM, Mexico City C.P. 04510, Mexico; (A.M.-E.); (N.V.); (G.P.-Z.)
| | | | - Edgar Jimenez-Díaz
- Facultad de Ciencias, UNAM, Mexico City C.P. 04510, Mexico; (M.H.); (E.J.-D.)
| | | | - José Manuel Saniger
- Instituto de Ciencias Aplicadas y Tecnología (ICAT), UNAM, Mexico City C.P. 04510, Mexico; (J.M.S.); (I.B.-R.)
| | - Isidro Badillo-Ramírez
- Instituto de Ciencias Aplicadas y Tecnología (ICAT), UNAM, Mexico City C.P. 04510, Mexico; (J.M.S.); (I.B.-R.)
| | - Nadia Vazquez
- Facultad de Medicina, UNAM, Mexico City C.P. 04510, Mexico; (A.M.-E.); (N.V.); (G.P.-Z.)
| | - Gabriela Piñón-Zarate
- Facultad de Medicina, UNAM, Mexico City C.P. 04510, Mexico; (A.M.-E.); (N.V.); (G.P.-Z.)
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11
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Zhang S, Li X, Qi Y, Ma X, Qiao S, Cai H, Zhao BC, Jiang HB, Lee ES. Comparison of Autogenous Tooth Materials and Other Bone Grafts. Tissue Eng Regen Med 2021; 18:327-341. [PMID: 33929713 PMCID: PMC8169722 DOI: 10.1007/s13770-021-00333-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/25/2021] [Accepted: 01/31/2021] [Indexed: 10/21/2022] Open
Abstract
Autogenous odontogenic materials are a new, highly biocompatible option for jaw restoration. The inorganic component of autogenous teeth acts as a scaffold to maintain the volume and enable donor cell attachment and proliferation; the organic component contains various growth factors that promote bone reconstruction and repair. The composition of dentin is similar to that of bone, which can be a rationale for promoting bone reconstruction. Recent advances have been made in the field of autogenous odontogenic materials, and studies have confirmed their safety and feasibility after successful clinical application. Autogenous odontogenic materials have unique characteristics compared with other bone-repair materials, such as the conventional autogenous, allogeneic, xenogeneic, and alloplastic bone substitutes. To encourage further research into odontogenic bone grafts, we compared the composition, osteogenesis, and development of autogenous odontogenic materials with those of other bone grafts. In conclusion, odontogenic bone grafts should be classified as a novel bone substitute.
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Affiliation(s)
- Shuxin Zhang
- Stomatological Materials Laboratory, School of Stomatology, Shandong First Medical University, Tai’an, 271016 Shandong China
| | - Xuehan Li
- Stomatological Materials Laboratory, School of Stomatology, Shandong First Medical University, Tai’an, 271016 Shandong China
| | - Yanxin Qi
- Stomatological Materials Laboratory, School of Stomatology, Shandong First Medical University, Tai’an, 271016 Shandong China
| | - Xiaoqian Ma
- Stomatological Materials Laboratory, School of Stomatology, Shandong First Medical University, Tai’an, 271016 Shandong China
| | - Shuzhan Qiao
- Stomatological Materials Laboratory, School of Stomatology, Shandong First Medical University, Tai’an, 271016 Shandong China
| | - HongXin Cai
- Stomatological Materials Laboratory, School of Stomatology, Shandong First Medical University, Tai’an, 271016 Shandong China
| | - Bing Cheng Zhao
- Stomatological Materials Laboratory, School of Stomatology, Shandong First Medical University, Tai’an, 271016 Shandong China
| | - Heng Bo Jiang
- Stomatological Materials Laboratory, School of Stomatology, Shandong First Medical University, Tai’an, 271016 Shandong China
| | - Eui-Seok Lee
- Department of Oral and Maxillofacial Surgery, Graduate School of Clinical Dentistry, Korea University, Seoul, 02841 Republic of Korea
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12
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Brito MA, Mecca LEA, Sedoski TDS, Mroczek T, Claudino M, Araujo MRD. Histological Comparison between Biphasic Calcium Phosphate and Deproteinized Bovine Bone on Critical-Size Bone Defects. Braz Dent J 2021; 32:26-33. [PMID: 33913998 DOI: 10.1590/0103-6440202103583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 07/15/2020] [Indexed: 11/21/2022] Open
Abstract
The limited options for bone repair have led to an extensive research of the field and the development of alloplastic and xenogeneic grafts. The purpose of this study was to evaluate bone repair with two bone substitutes: deproteinized bovine bone (DBB) and biphasic calcium phosphate ceramic (BCP) in critical-size defect. A total of 8-mm defects were made in the parietal bones of rabbits (n=12). The animals were divided into three experimental groups: sham (defect filled with a blood clot), DBB (defect filled with DBB), and BCP (defect filled with BCP). After the experimental periods of 15 and 45 days, the animals were euthanized and submitted to histomorphometric analysis. The total defect area, mineralized tissue area, biomaterial area, and soft tissue area were evaluated. A greater amount of immature bone tissue and biomaterial particles were observed in the BCP group compared to DBB and sham at 45 days (p<0.05). There was no difference in the qualitative pattern of bone deposition between DBB and BCP. However, the sham group did not show osteoid islands along with the defect, presenting a greater amount of collagen fibers as well in relation to the DBB and BCP groups. There was a greater number of inflammatory cells in the DBB at 45 days compared to BCP and sham groups. In conclusion, BCP and DBB are options for optimizing the use of bone grafts for maxillofacial rehabilitation. Bone defects treated with BCP showed greater deposition of bone tissue at 45 days.
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Affiliation(s)
| | | | | | - Tayline Mroczek
- Departament of Pharmaceutical Sciences, UEPG - Universidade Estadual de Ponta Grossa, PR, Brazil
| | - Marcela Claudino
- Departament of Dentistry, UEPG - Universidade Estadual de Ponta Grossa, PR, Brazil
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13
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Baek HJ, Kim IH, Yun PY, Kim YK. Prognosis of single tooth implants following alveolar ridge preservation with two recombinant human bone morphogenetic protein-2 delivery systems. BMC Oral Health 2021; 21:201. [PMID: 33879162 PMCID: PMC8059292 DOI: 10.1186/s12903-021-01565-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/13/2021] [Indexed: 11/18/2022] Open
Abstract
Background
We previously reported similar efficacies of alveolar ridge preservation (ARP) on single extraction socket with two different E. coli derived recombinant human bone morphogenetic protein-2 (rhBMP-2) delivery systems (Cowell BMP, Cowell medi Co, Busan, Korea; β-tricalcium phosphate and hydroxyapatite particle & O-BMP, Osstem Implant Co, Busan, Korea; absorbable collagen sponge). After the trial, we completed implant therapy and observed over an average of 3 years. This follow-up study was performed retrospectively to compare result of implant treatment at the preserved alveolar ridge site. Methods
Patients who underwent extraction of single tooth and received ARP with one of two rhBMP-2 delivery systems from October 2015 to October 2016 were enrolled. Twenty-eight patients (Group 1: Cowell BMP 14; Group 2: O-BMP 14) who underwent implant therapy and prosthetic treatment were included in study. Stability and marginal bone loss (MBL) of each implant were collected from medical charts and radiographs, and analyzed. The survival and success rates of implants were calculated. Results The primary implant stability represented by implant stability quotient (ISQ) for Groups 1 and 2 was 69.71 and 72.86, respectively. The secondary implant stability for Groups 1 and 2 was 78.86 and 81.64, respectively. Primary and secondary stabilities were not statistically different (P = 0.316 and 0.185, respectively). MBL at the latest follow-up was 0.014 mm in Group 1 over 33.76 ± 14.31 months and 0.021 mm in Group 2 over 40.20 ± 9.64 months, with no significant difference (P = 0.670). In addition, the success rate of implants was 100% (14/14) in Group 1 and 92.9% (13/14) in Group 2, with survival rate of 100% (14/14) in Group 1 and 92.9% (13/14) in Group 2. Conclusions We confirmed good prognosis in both groups as a result of implant therapy after ARP with each of two rhBMP-2 carriers.
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Affiliation(s)
- Hyeong-Jin Baek
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, 82 Gumi-ro 173beon-gil, Bundang-gu, 13620, Seongnam, Korea
| | - Il-Hyung Kim
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, 82 Gumi-ro 173beon-gil, Bundang-gu, 13620, Seongnam, Korea.,Office of Human Resources Development, Armed Forces Capital Hospital, Armed Forces Medical Command, Seongnam, Korea
| | - Pil-Young Yun
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, 82 Gumi-ro 173beon-gil, Bundang-gu, 13620, Seongnam, Korea
| | - Young-Kyun Kim
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, 82 Gumi-ro 173beon-gil, Bundang-gu, 13620, Seongnam, Korea. .,School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea.
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14
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Hashemipoor M, Asghari N, Mohammadi M, Kalantari M, Arabsolghar M, Ranjbar H. Radiological and histological evaluation of horizontal ridge augmentation using corticocancellous freeze-dried bone allograft with and without autogenous bone: A randomized controlled clinical trial. Clin Implant Dent Relat Res 2020; 22:582-592. [PMID: 32902105 DOI: 10.1111/cid.12935] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 11/30/2022]
Abstract
PURPOSE The purpose of this study was radiological and histological evaluation of horizontal ridge augmentation using corticocancellous freeze-dried bone allograft (FDBA) with and without autogenous bone (AB). MATERIALS AND METHODS The present research was conducted on 42 patients (27 females and 15 males) with insufficient width of edentulous ridge. The patients were randomly assigned into two groups, FDBA alone + collagen membrane (n = 21) and the combined FDBA and AB + collagen membrane (n = 21). The horizontal alveolar ridge dimensions were measured using cone-beam computerized tomography before and 6 months after alveolar ridge augmentation. At the time of insertion of implants, biopsy of new bone was taken from 11 patients in each group and was analyzed histologically. The obtained data were statistically analyzed with paired t test and two-sample t test. The registration number was IRCT201109165305N3. RESULTS The mean ± SD ridge width gain after 6 months at the distance of 0, 2, 4, and 6 mm from crest of alveolar ridge was 2.78 ± 1.44, 3.05 ± 1.21, 2.82 ± 1.62, and 2.23 ± 1.95 mm in the FDBA group and 2.40 ± 1.60, 3.10 ± 1.80, 3.60 ± 1.87, and 2.65 ± 2.39 mm in the combined group, respectively, which was statistically significant in both groups using paired t test (P < .001). However, the difference between two groups analyzed by two-sample t test was not statistically significant (P > .05). Amount of new bone generation, remained particles, and connective tissue was not statistically different between two groups (P = .367, P = .428, and P = .598, respectively). CONCLUSION Based on the results of this study, corticocancellous FDBA granules along with collagen membrane can successfully be used for horizontal augmentation of edentulous ridge, and adding AB to the granules of FDBA does not significantly increase the quality and quantity of regenerated bone.
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Affiliation(s)
- Mahtab Hashemipoor
- Department of Periodontics, Kashan Dental School, Kashan University of Medical Sciences, Kashan, Iran
| | - Najmeh Asghari
- Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA
| | - Mohammad Mohammadi
- Oral and Dental Diseases Research Center and Department of Periodontics, Kerman Dental School, Kerman University of Medical Sciences, Kerman, Iran
| | - Mahsa Kalantari
- Department of Oral and Maxillofacial Pathology, and Oral and Dental Diseases Research Center, Kerman Dental School, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohaddese Arabsolghar
- Oral and Dental Diseases Research Center and Department of Periodontics, Kerman Dental School, Kerman University of Medical Sciences, Kerman, Iran
| | - Hadi Ranjbar
- Mental Health Research Center, Psychosocial Health Research Institute, Iran University of Medical Sciences, Tehran, Iran
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15
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KADİROĞLU ET, KARAYÜREK F, AKBALIK ME. Evaluation of the effects of bone morphogenetic protein-2 on the healing of bone calvarial defects in ovariectomized rats. TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES 2020. [DOI: 10.3906/vet-1911-24] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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16
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Comparative Evaluation of Bone Repair with Four Different Bone Substitutes in Critical Size Defects. Int J Biomater 2020; 2020:5182845. [PMID: 32528537 PMCID: PMC7262656 DOI: 10.1155/2020/5182845] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 05/11/2020] [Indexed: 02/02/2023] Open
Abstract
This study evaluated the osteoconductive potential of four biomaterials used to fill bone defects. For this, 24 male Albino rabbits were submitted to the creation of a bilateral 8 mm calvarial bone defect. The animals were divided into four groups-bovine hydroxyapatite, Bio-Oss® (BIO); Lumina-Bone Porous® (LBP); Bonefill® (BFL); and an alloplastic material, Clonos® (CLN)-and were euthanized at 14 and 40 days. The samples were subjected to histological and histometric analysis for newly formed bone area. Immunohistochemical analysis for Runt-related transcription factor 2 (Runx2), vascular endothelial growth factor (VEGF), and osteocalcin (OC) was performed. After statistical analysis, the CLN group showed greater new bone formation (NB) in both periods analyzed (p < 0.05). At 14 days, the NB showed greater values in BIO in relation to LBP and BFL groups; however, after 40 days, the LBP group surpassed the results of BIO (p < 0.001). The immunostaining showed a decrease in Runx2 intensity in BIO after 40 days, while it increased for LBP (p < 0.05). The CLN showed increased OC compared to the other groups in both periods analyzed (p < 0.05). Therefore, CLN showed the best osteoconductive behavior in critical defects in rabbit calvaria, and BFL showed the lowest osteoconductive property.
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17
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Akita K, Fukuda N, Kamada K, Kudoh K, Kurio N, Tsuru K, Ishikawa K, Miyamoto Y. Fabrication of porous carbonate apatite granules using microfiber and its histological evaluations in rabbit calvarial bone defects. J Biomed Mater Res A 2019; 108:709-721. [PMID: 31756282 DOI: 10.1002/jbm.a.36850] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 02/06/2023]
Abstract
Carbonate apatite (CO3 Ap) granules are known to show good osteoconductivity and replaced to new bone. On the other hand, it is well known that a porous structure allows bone tissue to penetrate its pores, and the optimal pore size for bone ingrowth is dependent on the composition and structure of the scaffold material. Therefore, the aim of this study was to fabricate various porous CO3 Ap granules through a two-step dissolution-precipitation reaction using CaSO4 as a precursor and 30-, 50-, 120-, and 205-μm diameter microfibers as porogen and to find the optimal pore size of CO3 Ap. Porous CO3 Ap granules were successfully fabricated with pore size 8.2-18.7% smaller than the size of the original fiber porogen. Two weeks after the reconstruction of rabbit calvarial bone defects using porous CO3 Ap granules, the largest amount of mature bone was seen to be formed inside the pores of CO3 Ap (120) [porous CO3 Ap granules made using 120-μm microfiber] followed by CO3 Ap (50) and CO3 Ap (30). At 4 and 8 weeks, no statistically significant difference was observed based on the pore size, even though largest amount of mature bone was formed in case of CO3 Ap (120). It is concluded, therefore, that the optimal pore size of the CO3 Ap is that of CO3 Ap (120), which is 85 μm.
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Affiliation(s)
- Kazuya Akita
- Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Naoyuki Fukuda
- Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kumiko Kamada
- Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Keiko Kudoh
- Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Naito Kurio
- Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kanji Tsuru
- Section of Bioengineering, Fukuoka Dental College, Fukuoka, Japan
| | - Kunio Ishikawa
- Department of Biomaterials, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Youji Miyamoto
- Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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Effect of Electrohydraulic Extracorporeal Shockwave Therapy on the Repair of Bone Defects Grafted With Particulate Allografts. J Craniofac Surg 2019; 30:1298-1302. [PMID: 31166268 DOI: 10.1097/scs.0000000000005213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This study determined the effect of electrohydraulic extracorporeal shockwave therapy (ESWT) on the healing of mandible defects repaired using particulate allogenic bone grafts. This study included 20 male Wistar rats aged 12 weeks. In all the animals, a critical-sized defect of 4-mm diameter was created in the mandible and the defect area was filled with particulate allograft. Next, the rats were divided into 2 groups, allograft (G) (n = 10) and allograft + ESWT (GE) (n = 10). On days 3, 5, and 7 after the grafting, rats in the GE group received ESWT involving 200 pulses with an energy flux density of 0.19 mJ/mm. Five rats in each group were sacrificed at the end of week 4 and at the end of week 8. Defect areas were examined radiologically by performing high-resolution computed tomography and stereologically by using the Cavalieri method. Obtained data were compared by performing statistical analysis. Radiological evaluation showed that bone density was higher in rats in the G group than in those in the GE group at week 4. In contrast, bone density was higher in rats in the GE group than in those in the G group at week 8. Stereological examination showed that new bone, connective tissue, and capillary volumes were higher in rats in the GE group than in those in the G group at both weeks 4 and 8. The authors' results indicate that repeated doses of ESWT accelerate the healing of bone defects repaired using allogenic bone grafts.
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Kim S, Bark CW, Van Quy H, Seo S, Lim J, Lee J, Suh J, Lee Y, Um H, Kim Y. Photofunctionalizing effects of hydroxyapatite combined with TiO
2
on bone regeneration in rabbit calvarial defects. J Biomed Mater Res B Appl Biomater 2018; 107:1953-1959. [DOI: 10.1002/jbm.b.34288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/12/2018] [Accepted: 11/04/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Shin‐Young Kim
- Department of PeriodontologySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
| | - Chung Wung Bark
- Department of Electrical EngineeringGachon University, Seongnam Gyeonggi 13120 Republic of Korea
| | - Hoang Van Quy
- Department of Electrical EngineeringGachon University, Seongnam Gyeonggi 13120 Republic of Korea
| | - Seung‐Jun Seo
- Department of PeriodontologySchool of Dentistry, A3DI, Kyungpook National University Daegu 41940 Republic of Korea
| | - Jae‐Hong Lim
- Industrial Technology Convergence Center, Pohang Accelerator Laboratory, POSTECH Pohang 37673 Gyeongbuk Republic of Korea
| | - Jae‐Mok Lee
- Department of PeriodontologySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
| | - Jo‐Young Suh
- Department of PeriodontologySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
| | - Youngkyun Lee
- Department of BiochemistrySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
| | - Heung‐Sik Um
- Department of PeriodontologyResearch Institute for Oral Sciences, College of Dentistry, Gangneung‐Wonju National University Gangneung 25457 Republic of Korea
| | - Yong‐Gun Kim
- Department of PeriodontologySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
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20
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Pihlman H, Keränen P, Paakinaho K, Linden J, Hannula M, Manninen IK, Hyttinen J, Manninen M, Laitinen-Vapaavuori O. Novel osteoconductive β-tricalcium phosphate/poly(L-lactide-co-e-caprolactone) scaffold for bone regeneration: a study in a rabbit calvarial defect. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:156. [PMID: 30298429 DOI: 10.1007/s10856-018-6159-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 09/18/2018] [Indexed: 06/08/2023]
Abstract
The advantages of synthetic bone graft substitutes over autogenous bone grafts include abundant graft volume, lack of complications related to the graft harvesting, and shorter operation and recovery times for the patient. We studied a new synthetic supercritical CO2 -processed porous composite scaffold of β-tricalcium phosphate and poly(L-lactide-co-caprolactone) copolymer as a bone graft substitute in a rabbit calvarial defect. Bilateral 12 mm diameter critical size calvarial defects were successfully created in 18 rabbits. The right defect was filled with a scaffold moistened with bone marrow aspirate, and the other was an empty control. The material was assessed for applicability during surgery. The follow-up times were 4, 12, and 24 weeks. Radiographic and micro-CT studies and histopathological analysis were used to evaluate new bone formation, tissue ingrowth, and biocompatibility. The scaffold was easy to shape and handle during the surgery, and the bone-scaffold contact was tight when visually evaluated after the implantation. The material showed good biocompatibility and its porosity enabled rapid invasion of vasculature and full thickness mesenchymal tissue ingrowth already at four weeks. By 24 weeks, full thickness bone ingrowth within the scaffold and along the dura was generally seen. In contrast, the empty defect had only a thin layer of new bone at 24 weeks. The radiodensity of the material was similar to the density of the intact bone. In conclusion, the new porous scaffold material, composed of microgranular β-TCP bound into the polymer matrix, proved to be a promising osteoconductive bone graft substitute with excellent handling properties.
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Affiliation(s)
- Hanna Pihlman
- Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
| | - Pauli Keränen
- Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Kaarlo Paakinaho
- Faculty of Medicine and Life Sciences, Biomeditech, University of Tampere, Tampere, Finland
- Orton Orthopaedic Hospital, Helsinki, Finland
| | - Jere Linden
- Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Markus Hannula
- Faculty of Biomedical Science and Engineering, Tampere University of Technology, Tampere, Finland
| | | | - Jari Hyttinen
- Faculty of Medicine and Life Sciences, Biomeditech, University of Tampere, Tampere, Finland
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Bone Healing Evaluation in Critical-Size Defects Treated With Xenogenous Bone Plus Porcine Collagen. IMPLANT DENT 2018; 26:296-302. [PMID: 28288022 DOI: 10.1097/id.0000000000000572] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE This study aimed to evaluate the osteoconductive features of Bio-Oss Collagen in large critical-size defects (8 mm). MATERIALS AND METHODS Thirty-six adult Wistar Albinus male adult rats were carried out a critical-size defect with a trephine bur of 8 mm in the calvaria. Groups were divided depending on the filling biomaterial as follows: group BO: Bio-Oss (n = 18); group BOC: Bio-Oss Collagen (n = 18). After 7, 30, and 60 days, 6 rats of each group were euthanized with anesthetic overdose. Specimens were laboratory processed for histomorphometric analysis. Histomorphometric data were statistically analyzed by analysis of variance and post-Tukey test (P < 0.05). RESULTS Statistical differences were found in new bone formation just in the intragroup comparison among periods after 7 and 60 postoperative days, indicating more new bone formation after 60 days (Tukey test, P = 0.029). CONCLUSION Under the limitation of this research, it could be concluded that Bio-Oss and Bio-Oss Collagen in this experimental model did not show osteoconductive features.
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22
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Sadeghi R, Najafi M, Semyari H, Mashhadiabbas F. Histologic and histomorphometric evaluation of bone regeneration using nanocrystalline hydroxyapatite and human freeze-dried bone graft : An experimental study in rabbit. J Orofac Orthop 2017; 78:144-152. [PMID: 28130564 DOI: 10.1007/s00056-016-0067-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 10/07/2016] [Indexed: 01/23/2023]
Abstract
PURPOSE Bone regeneration is an important concern in periodontal treatment and implant dentistry. Different biomaterials and surgical techniques have been used for this purpose. The aim of the present study was to compare the effect of nanocrystalline hydroxyapatite and human freeze-dried bone graft (FDBG) in regeneration of rabbit calvarium bony defects by histologic and histomorphometric evaluation. METHODS In this experimental study, three similar defects, measuring 8 mm in diameter, were created in the calvaria of 16 white New Zealand rabbits. Two defects were filled with FDBG and nanocrystalline hydroxyapatite silica gel, while the other one remained unfilled to be considered as control. All the defects were covered with collagen membranes. During the healing period, two animals perished; so 14 rabbits were divided into two groups: half of them were euthanized after 6 weeks of healing and the other half after 12 weeks. The specimens were subjected to histologic and histomorphometric examinations for assessment of the following variables: percentage of bone formation and residual graft material, inflammation scores, patterns of bone formation and type of newly formed bone. RESULTS The percentages of new bone formation after 6 weeks were 14.22 ± 7.85, 21.57 ± 6.91, and 20.54 ± 10.07% in FDBG, NanoBone, and control defects. These values were 27.54 ± 20.19, 23.86 ± 6.27, and 26.48 ± 14.18% in 12-week specimens, respectively. No significant differences were found in the amount of bone formation between the groups. With regard to inflammation, the control and NanoBone groups showed significantly less inflammation compared to FDBG at the 6-week healing phase (P = 0.04); this difference was not significant in the 12-week specimens. CONCLUSIONS Based on the results of this experimental study, both NanoBone and FDBG exhibited a similar effect on bone formation.
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Affiliation(s)
- Rokhsareh Sadeghi
- Department of Periodontics, Faculty of Dentistry, Shahed University, 37, Italia St., Vesal Ave., Tehran, 1417755351, Iran.
| | - Mohammad Najafi
- Department of Periodontics, Faculty of Dentistry, Golestan University of Medical Sciences, Gorgan, Golestan, Iran
| | - Hassan Semyari
- Department of Periodontics, Faculty of Dentistry, Shahed University, 37, Italia St., Vesal Ave., Tehran, 1417755351, Iran
| | - Fatemeh Mashhadiabbas
- Department of Oral and Maxillofacial Pathology, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Valdivia-Gandur I, Engelke W, Beltrán V, Borie E, Fuentes R, Manzanares-Céspedes MC. Novel use of cranial epidural space in rabbits as an animal model to investigate bone volume augmentation potential of different bone graft substitutes. Head Face Med 2016; 12:35. [PMID: 27906068 PMCID: PMC5134093 DOI: 10.1186/s13005-016-0131-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 11/22/2016] [Indexed: 01/03/2023] Open
Abstract
Background The success of bone augmentation to a major degree depends on the biomechanics and biological conditions of the surrounding tissues. Therefore, an animal model is needed providing anatomical sites with similar mechanical pressures for comparing its influence on different biomaterials for bone regeneration. The present report describes the new bone formation associated to biomaterial in a bursa created in the epidural space, between dura mater and cranial calvaria, under the constant pressure of cerebrospinal fluid. Methods Five adult California rabbits were used for the trial. In each animal, two bursae were created in the epidural spaces, in the anterior part of the skull, below both sides of the interfrontal suture. The spaces between dura mater and cranial calvaria were filled with in-situ hardening biphasic calcium phosphate containing hydroxyapatite and beta tricalcium-phosphate (BCP), in-situ hardening phase-pure beta-tricalcium phosphate (β-TCP) or without any biomaterials (sham). After 90 days, the animals were sacrificed, and the defect sites were extracted and processed for histomorphometric analysis by optical and backscattered electron microscopy. Results The cranial epidural spaces created (n = 10) could be preserved by the application both BCP (n = 3) and β-TCP biomaterials (n = 3) in all experimental sites. The sites augmented with BCP showed less new bone formation but a trend to better volume preservation than the sites augmented with β-TCP. However, the bone in the BCP sites seemed to be more mature as indicated by the higher percentage of lamellar bone in the sites. In contrast, the created space could not be preserved, and new bone formation was scarce in the sham-operated sites (n = 4). Conclusion The experimental bursae created bilaterally in the epidural space allows comparing objectively bone formation in relation to biomaterials for bone regeneration under permanent physiological forces from cerebrospinal fluid pressure.
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Affiliation(s)
- Ivan Valdivia-Gandur
- Biomedical Department, Universidad de Antofagasta, Antofagasta, Chile.,Odontology Department, Universidad de Antofagasta, Antofagasta, Chile
| | - Wilfried Engelke
- Department of Oral and Maxillofacial Surgery, Georg-August-Universität, Göttingen, Germany
| | - Víctor Beltrán
- Department of Oral and Maxillofacial Surgery, Georg-August-Universität, Göttingen, Germany. .,Faculty of Dentistry, Universidad de La Frontera, Temuco, Chile. .,Clinical Investigation and Dental Innovation Center (CIDIC), Dental School, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile.
| | - Eduardo Borie
- Faculty of Dentistry, Universidad de La Frontera, Temuco, Chile
| | - Ramón Fuentes
- Faculty of Dentistry, Universidad de La Frontera, Temuco, Chile
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Takauti CAY, Futema F, Brito Junior RBD, Abrahão AC, Costa C, Queiroz CS. Assessment of bone healing in rabbit calvaria grafted with three different biomaterials. Braz Dent J 2016; 25:379-84. [PMID: 25517771 DOI: 10.1590/0103-6440201302383] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 07/28/2014] [Indexed: 11/21/2022] Open
Abstract
This study evaluated the bone regeneration process in rabbit calvaria induced by three types of biomaterials: two xenogenous, consisting of deproteinized bovine bone, while the other was alloplastic, based on biphasic calcium phosphate. Five New Zealand white rabbits weighing between 2,900 and 3,500 g were submitted to four standard 8 mm-diameter perforations at the parietal bone. Three perforations were filled with three grafts and biomaterials, two of them received bovine Bio-Oss® and Endobon® Xenograft Granules, and the other consisted of fully alloplastic Straumann® Bone Ceramic. The fourth remaining cavity was used as control with coagulum. After eight weeks, the animals were sacrificed, and the samples were prepared for morphometric and qualitative analysis. The cavities filled with alloplastic biomaterials showed higher percentages of newly formed bone (p<0.05), while the cavities with xenogenous biomaterials showed higher amount of residual graft (p<0.05). Although the results showed greater bone formation with Straumann® Bone Ceramic, further studies are required to prove which is the more effective biomaterial for bone induction process.
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Affiliation(s)
| | - Fabio Futema
- Department of Veterinary Medicine, Paulista University, UNIP, São Paulo, SP, Brazil
| | | | - Aline Corrêa Abrahão
- Department of Dentistry, Federal University of Rio de Janeiro, UFRJ, Rio de Janeiro, RJ, Brazil
| | - Claudio Costa
- Department of Stomatology, School of Dentistry, University of São Paulo, USP, São Paulo, SP, Brazil
| | - Celso Silva Queiroz
- Department of Dentistry, Veiga de Almeida University, Rio de Janeiro, RJ, Brazil
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Bucchi C, Borie E, Arias A, Dias FJ, Fuentes R. Radiopacity of alloplastic bone grafts measured with cone beam computed tomography: An analysis in rabbit calvaria. Bosn J Basic Med Sci 2016; 17:61-66. [PMID: 27968706 DOI: 10.17305/bjbms.2016.1482] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 10/25/2016] [Accepted: 07/30/2016] [Indexed: 01/07/2023] Open
Abstract
Availability of adequate bone structure for dental implants is still a problem in dentistry. Alloplastic grafts, which promote bone regeneration, are used as bone substitutes in orthopedic and oral surgical procedures. The aim of this study was to evaluate the radiopacity of three different synthetic bone grafts in rabbit calvaria, over 3 months, using cone beam computed tomography (CBCT). Four critical-size defects were made on the calvaria of 11 rabbits. The lesions were classified into three groups according to the alloplastic grafts they received: Osteon® 70/30, Osteon collagen®, and Osteon II® groups. The fourth group received blood clot, and served as a control. The bone samples were collected and analyzed with CBCT after the 1st, 2nd, and 3rd month. One month after surgery, the lesions that received Osteon® 70/30 and Osteon collagen® grafts showed the highest radiopacity compared to the lesions with Osteon II® and blood clot. After the 2nd month, the radiopacity values between the three groups that received the grafts were more similar compared to the group with blood clot. After the 3rd month, the lesions with Osteon® 70/30 graft showed the highest radiopacity values, followed by Osteon collagen® and Osteon II® groups. The group that received blood clot showed the lowest radiopacity values. In conclusion, the grafts used in this study had higher radiopacity values compared to blood clot. Among the grafts used, the Osteon® 70/30 graft showed the highest radiopacity values in the 3-month period.
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Affiliation(s)
- Cristina Bucchi
- Department of Integral Dentistry, Research Centre in Dental Sciences (CICO), Universidad de La Frontera, Temuco, Chile.
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Lozano-Carrascal N, Delgado-Ruiz RA, Gargallo-Albiol J, Maté-Sánchez JE, Hernandez Alfaro F, Calvo-Guirado JL. Xenografts Supplemented with Pamindronate placed in postextraction sockets to avoid crestal bone resorption. Experimental study in Fox hound dogs. Clin Oral Implants Res 2016; 27:149-55. [PMID: 25639484 DOI: 10.1111/clr.12550] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/26/2014] [Indexed: 12/19/2022]
Abstract
OBJECTIVES The aim of the study was to compare the effects of porcine xenografts (MP3(®)) with or without pamindronate for the healing of small and large defects of postextraction sockets. MATERIALS AND METHODS Six beagle dogs were used in the study; second premolars and first molars of the mandible were extracted, small defects (SD) and large defects (LD) were identified. Each defect was measured and randomly filled as follows: SC (small control defects filled with MP3(®) alone), ST (small test defects filled with MP3(®) modified with pamindronate), LC (large control defects filled with MP3(®) alone), LT (large test defects filled with MP3(®) modified with pamindronate). After 4 and 8 weeks, the animals were euthanized and the percentages of new bone formation (NB), residual graft (RG) and connective tissue (CT) were analysed by histology and histomorphometry of undecalcified samples. RESULTS After 4 weeks, NB formation was higher for ST compared to all groups and for LT compared to LC (P < 0.05); RG was significantly higher in both control groups compared to tests (P < 0.05); and CT was higher in large defects (LC and LT) compared to small defects. After 8 weeks, NB formation was higher for test groups (ST and LT) compared to controls (P < 0.05); RG was significantly higher in both control groups compared to tests (P < 0.05); and CT was higher in large defects (LC and LT) compared to small defects (P < 0.05). CONCLUSIONS Within the limitations of this experimental study, the findings suggest that porcine xenografts modified with pamindronate favours the new bone formation and increased the porcine xenograft substitution/replacement after 4 and 8 weeks of healing.
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Affiliation(s)
| | - Rafael Arcesio Delgado-Ruiz
- Department of Prosthodontics and Digital Technology, School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA
| | | | | | | | - José Luis Calvo-Guirado
- General & Implant Dentistry, Faculty of Medicine and Dentistry, University of Murcia, Murcia, Spain
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Delgado-Ruiz RA, Calvo Guirado JL, Romanos GE. Bone grafting materials in critical defects in rabbit calvariae. A systematic review and quality evaluation using ARRIVE guidelines. Clin Oral Implants Res 2015; 29:620-634. [DOI: 10.1111/clr.12614] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2015] [Indexed: 11/28/2022]
Affiliation(s)
| | - José Luis Calvo Guirado
- International Dentistry Research Cathedra; San Antonio Catholic University of Murcia (UCAM); Murcia Spain
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Delgado-Ruiz RA, Calvo-Guirado JL, Romanos GE. Critical size defects for bone regeneration experiments in rabbit calvariae: systematic review and quality evaluation using ARRIVE guidelines. Clin Oral Implants Res 2014; 26:915-930. [PMID: 24766503 DOI: 10.1111/clr.12406] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2014] [Indexed: 12/12/2022]
Abstract
OBJECTIVES To perform a systematic review of studies that report the healing of critical size defects (CSDs) in rabbit calvaria and to determine the quality of the studies according to ARRIVE guidelines. MATERIALS AND METHODS An Internet search was made in duplicate between December 2011 and August 2013 using MEDLINE, PubMed and Google Scholar (without restrictions on date of publication) for rabbit studies reporting the healing of CSD in the calvaria. Animal Research Reporting in Vivo Experiment (ARRIVE) guidelines (a list of 20 aspects to score and to ensure comparison between different experimental studies in animals) were used to evaluate the quality of the selected works. RESULTS Twenty-five manuscripts were evaluated. Case-control studies predominated (92.59%). Animal age was not stated in 70.37% of the studies; weight was not reported in 29.62%; most animals weighed 3.5 kg (26.31%). A CSD dimension of 15 mm was common (51.61%), generally located centrally (51.85%), followed by bilateral locations (48.14%). Circular (66.66%), rectangular (14.81%), square (14.81%) and ovoid (1.48%) geometries were used. Histomorphometric data showed incomplete healing in all CSDs and higher percentages of healing in smaller defects (<10 mm). The longer the healing time allowed, the more bone healing took place, for both smaller and larger defects (>15 mm). Minimum quality grades were assigned to ARRIVE items study design (6), experimental animals (8), housing and husbandry (9), sample size (10), allocation (11), statistics (13), results-baseline data (14), numbers analyzed (15), adverse events (17) and funding (20). CONCLUSIONS Data on CSDs in rabbit calvariae lack homogeneity. Smaller defects can be considered critical depending on the time of sacrifice. When new diagnostic technologies are used in addition to histomorphometry, these should be applied with caution to facilitate future comparison with other research. The ARRIVE guidelines should be followed in any animal research protocol to improve the homogeneity, comparison and reproducibility between studies.
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Pelegrine AA, Aloise AC, Zimmermann A, de Mello E Oliveira R, Ferreira LM. Repair of critical-size bone defects using bone marrow stromal cells: a histomorphometric study in rabbit calvaria. Part I: use of fresh bone marrow or bone marrow mononuclear fraction. Clin Oral Implants Res 2013; 25:567-72. [PMID: 23464886 DOI: 10.1111/clr.12117] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2012] [Indexed: 01/16/2023]
Abstract
OBJECTIVES The aim of this study was to compare the bone healing observed after the use of (1) a scaffold enriched with fresh bone marrow, (2) a scaffold enriched with bone marrow mononuclear fraction, and (3) a scaffold alone. MATERIAL AND METHODS Twenty one rabbits were randomly divided into three groups of six animals and 1 group of 3 animals. Bilateral 12-mm diameter defects were created in the animals' parietal bones. In Control Group, the defects were filled with a xenograft alone (n = 6); in Group 1, with a xenograft enriched with fresh bone marrow (n = 6); in Group 2, with a xenograft enriched with bone marrow mononuclear fraction (n = 6) and in Unfilled Group, nothing was grafted (n = 3). In Groups 1, 2, and Control, one of the calvarial defects was randomly covered with a barrier membrane. The rabbits were sacrificed 8 weeks after surgery, and their parietal bones were harvested and analyzed histomorphometrically. RESULTS The histomorphometric analysis showed no difference between Group 1 and the Control Group regarding non-vital mineralized tissue area, but Group 2 showed a statistically significant higher percentage than the Control Group (P < 0.05) for both situations, with membrane (21.24 ± 3.78% and 13.52 ± 3.00%, respectively) and without membrane (20.91 ± 2.01% and 13.08 ± 1.72%, respectively). Group 2 showed the highest percentage of vital mineralized tissue area, followed by Group 1 and the Control Group (P < 0.05) for both situations, with membrane (28.17 ± 3.19%; 21.14 ± 7.38% and 13.06 ± 5.24%, respectively) and without membrane (21.13 ± 0.55%; 12.45 ± 6.34% and 6.56 ± 1.20%, respectively). Group 2 showed the lowest percentage of non-mineralized tissue area, followed by Group 1 and Control Group (P < 0.05) for both situations, with membrane (50.59 ± 6.64%; 58.75 ± 7.14% and 73.41 ± 6.87%, respectively) and without membrane (57.97 ± 1.91%; 71.74 ± 6.63% and 80.37 ± 2.67%, respectively). The sides in which the defects were covered with the barrier membrane showed better bone healing compared with the uncovered sides, in all groups (intragroup comparison, P < 0.05). The Unfilled Group specimens showed no bone formation. CONCLUSIONS Both methods using bone marrow stromal cells contributed to enhancing bone healing, especially that using the bone marrow mononuclear fraction. The use of a barrier membrane seemed to have a synergistic effect.
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Affiliation(s)
- André Antonio Pelegrine
- Department of Plastic Surgery, Paulista Medicine School, Federal University of Sao Paulo, Sao Paulo, Brazil
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Xenograft enriched with autologous bone marrow in inlay reconstructions: a tomographic and histomorphometric study in rabbit calvaria. Int J Biomater 2012; 2012:170520. [PMID: 22973313 PMCID: PMC3437679 DOI: 10.1155/2012/170520] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 07/23/2012] [Indexed: 12/28/2022] Open
Abstract
Objective. The aim of this study was to evaluate the bone healing after the usage of a scaffold enriched with bone marrow. Study Design. Ten rabbits were divided into 2 groups of 5 animals. Bilateral 12 mm diameter defects were created in the parietal bones. In control group Bio-Oss were inserted in both defects and, in experimental group, Bio-Oss enriched with autologous bone marrow were inserted in both defects. In these two groups, one of the calvarial defects was covered with Bio-Gide. The rabbits were sacrified 8 weeks after surgery and both CT and histomorphometric analysis were done. Results. The CT showed a lower remaining defect area in the experimental group covered with Bio-Gide when compared with control group, with and without Bio-Gide. The histomorphometrics showed no difference between groups regarding the non-vital mineralized tissue area. For vital mineralized tissue area, the experimental group covered with Bio-Gide obtained a higher percentage area when compared with control group, with and without Bio-Gide. For non-mineralized tissue area, the experimental group covered with Bio-Gide obtained a lower percentage area when compared with control group, with and without Bio-Gide. Conclusion. Both autologous bone marrow and membrane can contribute to the enhancement of bone healing.
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Evaluation of osteoconductive and osteogenic potential of a dentin-based bone substitute using a calvarial defect model. Int J Dent 2012; 2012:396316. [PMID: 22505899 PMCID: PMC3312261 DOI: 10.1155/2012/396316] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2011] [Revised: 12/28/2011] [Accepted: 01/04/2012] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to assess the osteoconductive and osteogenic properties of processed bovine dentin using a robust rabbit calvarial defect model. In total, 16 New Zealand White rabbits were operated to create three circular defects in the calvaria. One defect was left unfilled, one filled with collected autogenous bone, and the third defect was filled with the dentin-based bone substitute. Following surgery and after a healing period of either 1 or 6 weeks, a CT scan was obtained. Following sacrificing, the tissues were processed for histological examination. The CT data showed the density in the area grafted with the dentin-based material was higher than the surrounding bone and the areas grafted with autologous bone after 1 week and 6 weeks of healing. The area left unfilled remained an empty defect after 1 week and 6 weeks. Histological examination of the defects filled with the dentin product after 6 weeks showed soft tissue encapsulation around the dentin particles. It can be concluded that the rabbit calvarial model used in this study is a robust model for the assessment of bone materials. Bovine dentin is a biostable material; however, it may not be suitable for repairing large 4-wall defects.
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