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Li YF, Luo QP, Yang YX, Li AQ, Zhang XC. A novel bi-layered asymmetric membrane incorporating demineralized dentin matrix accelerates tissue healing and bone regeneration in a rat skull defect model. Biomater Sci 2024; 12:4226-4241. [PMID: 38984522 DOI: 10.1039/d4bm00350k] [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: 07/11/2024]
Abstract
Objectives: The technique of guided bone regeneration (GBR) has been widely used in the field of reconstructive dentistry to address hard tissue deficiency. The objective of this research was to manufacture a novel bi-layered asymmetric membrane that incorporates demineralized dentin matrix (DDM), a bioactive bone replacement derived from dentin, in order to achieve both soft tissue isolation and hard tissue regeneration simultaneously. Methods: DDM particles were harvested from healthy, caries-free permanent teeth. The electrospinning technique was utilized to synthesize bi-layered DDM-loaded PLGA/PLA (DPP) membranes. We analyzed the DPP bilayer membranes' surface topography, physicochemical properties and degradation ability. Rat skull critical size defects (CSDs) were constructed to investigate in vivo bone regeneration. Results: The synthesized DPP bilayer membranes possessed suitable surface characteristics, acceptable mechanical properties, good hydrophilicity, favorable apatite forming ability and suitable degradability. Micro-computed tomography (CT) showed significantly more new bone formation in the rat skull defects implanted with the DPP bilayer membranes. Histological evaluation further revealed that the bone was more mature with denser bone trabeculae. In addition, the DPP bilayer membrane significantly promoted the expression of the OCN matrix protein in vivo. Conclusions: The DPP bilayer membranes exhibited remarkable biological safety and osteogenic activity in vivo and showed potential as a prospective candidate for GBR applications in the future.
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Affiliation(s)
- Yan-Fei Li
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
- Department of Stomatology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, China
| | - Qi-Pei Luo
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
| | - Yu-Xin Yang
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
| | - An-Qi Li
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
| | - Xin-Chun Zhang
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
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Bizelli VF, Alécio Viotto AH, Delamura IF, Baggio AMP, Ramos EU, Faverani LP, Bassi APF. Inflammatory Profile of Different Absorbable Membranes Used for Bone Regeneration: An In Vivo Study. Biomimetics (Basel) 2024; 9:431. [PMID: 39056872 PMCID: PMC11275136 DOI: 10.3390/biomimetics9070431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 07/06/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024] Open
Abstract
BACKGROUND Guided bone regeneration (GBR) has become a necessary practice in implantology. Absorbable membranes have shown advantages over non-absorbable membranes, such as blood support of bone tissue. This study aimed to evaluate five collagen membranes in rat calvaria critical-size defects through a histomorphometric analysis of the inflammatory profile during the initial phase of bone repair. MATERIALS AND METHODS A total of 72 Albinus Wistar rats were used for the study, divided into six groups, with 12 animals per group, and two experimental periods, 7 and 15 days. The groups were as follows: the CG (clot), BG (Bio-Gide®), JS (Jason®), CS (Collprotect®), GD (GemDerm®), and GDF (GemDerm Flex®). RESULTS Data showed that the BG group demonstrated an inflammatory profile with an ideal number of inflammatory cells and blood vessels, indicating a statistically significant difference between the JS and CS groups and the BG group in terms of the number of inflammatory cells and a statistically significant difference between the JS and CS groups and the GD group in terms of angiogenesis (p < 0.05). CONCLUSIONS We conclude that different origins and ways of obtaining them, as well as the thickness of the membrane, can interfere with the biological response of the material.
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Affiliation(s)
- Vinícius Ferreira Bizelli
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University, UNESP, Araçatuba 16015-050, SP, Brazil; (A.H.A.V.); (I.F.D.); (A.M.P.B.); (E.U.R.); (L.P.F.); (A.P.F.B.)
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3
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Wang Y, Xia Y, Qian J, Xie Y, Shu R, Lin Z. Native vs. ribosome-crosslinked collagen membranes for periodontal regeneration: A randomized clinical trial. J Periodontal Res 2024. [PMID: 38962931 DOI: 10.1111/jre.13321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 06/18/2024] [Accepted: 06/21/2024] [Indexed: 07/05/2024]
Abstract
AIM To evaluate whether the ribosome-crosslinked collagen membrane (RCCM) is non-inferior to the natural collagen membrane (NCM) used in regeneration surgery in terms of clinical attachment level (CAL) gain at 6 months. METHODS Eighty patients diagnosed as generalized periodontitis presenting with isolated infrabony defect (≥4 mm deep) were enrolled and randomized to receive regenerative surgery, either with NCM or RCCM, both combined with deproteinized bovine bone mineral (DBBM). CAL, pocket probing depth (PPD), and gingival recession (GR) were recorded at baseline, 3, and 6 months postoperatively. Periapical radiographs were taken at baseline, immediately, and 6 months after surgery. Early wound healing index (EHI) and patients' responses were recorded at 2 weeks postoperatively. RESULTS At 6 months post-surgery, the mean CAL gain was 3.1 ± 1.5 mm in the NCM group and 2.9 ± 1.5 mm in the RCCM group, while the mean PPD was 4.3 ± 1.1 mm in the NCM group and 4.2 ± 1.0 mm in the RCCM group. Both groups demonstrated a statistically significant improvement from the baseline (p < .01). RCCM was non-inferior to NCM concerning the primary outcome (CAL gain at 6 months). The GR at 6 months postoperatively was 1.3 ± 1.2 and 1.2 ± 1.1 mm, which showed no difference compared with baseline. At 6 months follow-up, the radiographic linear bone fill (RLBF) was 6.5 ± 2.8 and 5.5 ± 2.6 mm (p > .05), while the bone fill percentage (BF%) was 102.3 ± 53.5% and 92.3 ± 40.1% (p > .05), in the NCM and RCCM groups, respectively. There was no significant difference in EHI and postoperative responses between two groups. CONCLUSION RCCM + DBBM resulted in no-inferior clinical and radiographic outcomes to NCM + DBBM for the treatment of isolated infrabony defect in 6 months.
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Affiliation(s)
- Yiwei Wang
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yiru Xia
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
- Department of Periodontology, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Jielei Qian
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yufeng Xie
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
- Department of Periodontology, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Rong Shu
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Zhikai Lin
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
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Watanabe T, Hasuike A, Wakuda S, Kogure K, Min S, Watanabe N, Sakai R, Chaurasia A, Arai Y, Sato S. Resorbable bilayer membrane made of L-lactide-ε-caprolactone in guided bone regeneration: an in vivo experimental study. Int J Implant Dent 2024; 10:1. [PMID: 38270674 PMCID: PMC10811307 DOI: 10.1186/s40729-024-00520-7] [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: 08/16/2023] [Accepted: 01/04/2024] [Indexed: 01/26/2024] Open
Abstract
PURPOSE Guided bone regeneration (GBR) is an accepted method in dental practice that can successfully increase the bone volume of the host at sites chosen for implant placement; however, existing GBR membranes exhibit rapid absorption and lack of adequate space maintenance capabilities. We aimed to compare the effectiveness of a newly developed resorbable bilayer membrane composed of poly (L-lactic acid) and poly (-caprolactone) (PLACL) with that of a collagen membrane in a rat GBR model. METHODS The rat calvaria was used as an experimental model, in which a plastic cylinder was placed. We operated on 40 male Fisher rats and subsequently performed micro-computed tomography and histomorphometric analyses to assess bone regeneration. RESULTS Significant bone regeneration was observed, which was and similar across all the experimental groups. However, after 24 weeks, the PLACL membrane demonstrated significant resilience, and sporadic partial degradation. This extended preservation of the barrier effect has great potential to facilitate optimal bone regeneration. CONCLUSIONS The PLACL membrane is a promising alternative to GBR. By providing a durable barrier and supporting bone regeneration over an extended period, this resorbable bilayer membrane could address the limitations of the current membranes. Nevertheless, further studies and clinical trials are warranted to validate the efficacy and safety of The PLACL membrane in humans.
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Affiliation(s)
- Taito Watanabe
- Department of Periodontology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, 101-8310, Japan
| | - Akira Hasuike
- Department of Periodontology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan.
- Dental Research Center, Nihon University School of Dentistry, Tokyo, 101-8310, Japan.
| | - Shin Wakuda
- Department of Periodontology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, 101-8310, Japan
| | - Keisuke Kogure
- Department of Periodontology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, 101-8310, Japan
| | - Seiko Min
- Department of Periodontics and Dental Hygiene, The University of Texas Health Science Center at Houston School of Dentistry, 7500 Cambridge Street, Houston, TX, 77054, USA
| | - Norihisa Watanabe
- Department of Periodontology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
| | - Ryo Sakai
- Department of Periodontology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
- Dental Research Center, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Akhilanand Chaurasia
- Department of Oral Medicine and Radiology, Faculty of Dental Sciences, King George's Medical University, Chowk, 226003, India
| | - Yoshinori Arai
- Dental Research Center, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
- Department of Oral and Maxillofacial Radiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Shuichi Sato
- Department of Periodontology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
- Dental Research Center, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
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Han HS, Lee JT, Oh S, Cho YD, Kim S. Effectiveness of a collagen matrix seal and xenograft in alveolar ridge preservation: an experimental study in dogs. Sci Rep 2024; 14:163. [PMID: 38168516 PMCID: PMC10762190 DOI: 10.1038/s41598-023-50370-3] [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: 09/22/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024] Open
Abstract
Majority of previous studies on alveolar ridge preservation (ARP) used collagen membranes as barrier membranes, and further evidence for ARP in dehiscent extraction sockets with a deproteinized bovine bone mineral (DBBM) and matrix is needed. The aim of this study is to assess the impact of non-cross linked collagen membranes (membrane) and crosslinked collagen matrices (matrix) on ARP using DBBM in extraction sockets with buccal dehiscence. In six mongrel dogs, the mesial roots of three mandibular premolars (P2, P3, and P4) were extracted 1 month after dehiscence defect induction. Two experimental groups were randomly assigned: (1) DBBM with a membrane (DBBM/membrane group) and (2) DBBM with a matrix (DBBM/matrix group). Three-dimensional (3D) volumetric, microcomputed tomography (μCT), and histologic analyses were performed to assess the ridge preservation. Both groups were effective to maintain the ridge width (p > 0.05), and the DBBM/matrix group showed more favorable soft tissue regeneration and bone quality in the histological analysis (p = 0.05). Based on these results, DBBM/matrix could be better choice for ARP in cases of buccal dehiscence defects.
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Affiliation(s)
- Hee-Seung Han
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, 101 Daehak-no, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Jung-Tae Lee
- One-Stop Specialty Center, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Seunghan Oh
- Department of Dental Biomaterials, The Institute of Biomaterial and Implant, School of Dentistry, Wonkwang University, Iksan, Republic of Korea
| | - Young-Dan Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, 101 Daehak-no, Jongno-gu, Seoul, 03080, Republic of Korea.
| | - Sungtae Kim
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, 101 Daehak-no, Jongno-gu, Seoul, 03080, Republic of Korea.
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Zhou WH, Li YF. A bi-layered asymmetric membrane loaded with demineralized dentin matrix for guided bone regeneration. J Mech Behav Biomed Mater 2024; 149:106230. [PMID: 37976993 DOI: 10.1016/j.jmbbm.2023.106230] [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: 10/06/2023] [Revised: 11/02/2023] [Accepted: 11/07/2023] [Indexed: 11/19/2023]
Abstract
OBJECTIVES Guided bone regeneration (GBR) is a well-established method for repairing hard tissue deficiency in reconstructive dentistry. The aim of this study was to investigate the barrier function, osteogenic activity and immunomodulatory ability of a novel bi-layered asymmetric membrane loaded with demineralized dentin matrix (DDM). METHODS DDM particles were harvested from healthy, caries-free permanent teeth. Electrospinning technique was utilized to prepare bi-layered DDM-loaded poly(lactic-co-glycolic acid) (PLGA)/poly(lactic acid) (PLA) membranes (abbreviated as DPP bilayer membranes). We analyzed the membranes' surface properties, cytocompatibility and barrier function, and evaluated their osteogenic activity in vitro. In addition, its effects on the osteogenic immune microenvironment were also investigated. RESULTS Synthetic DPP bilayer membranes presented suitable surface characteristics and satisfactory cytocompatibility. Transwell assays showed significant fewer migrated cells by the DPP bilayer membranes compared with blank control, with or without in vitro degradation (all P < 0.001). In vitro experiments indicated that our product elevated messenger ribonucleic acid (mRNA) expression levels of osteogenic genes alkaline phosphatase (ALP), osteopontin (OPN), osteocalcin (OCN) and runt-related transcription factor 2 (Runx2). Among all groups, 20% DPP bilayer membrane displayed highest ALP activity (P < 0.001). Furthermore, DPP bilayer membranes enhanced the mRNA expression of M2 macrophage markers and increased the proportion of CD206+ M2 macrophages by 100% (20% DPP: P < 0.001; 30% DPP: P < 0.001; 40% DPP: P < 0.05), thus exerting an inflammation suppressive effect. CONCLUSIONS DPP bilayer membranes exhibited notable biological safety and osteogenic activity in vitro, and have potential as a prospective candidate for GBR approach in the future.
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Affiliation(s)
- Wan-Hang Zhou
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Yan-Fei Li
- Department of Stomatology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518033, China.
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Mizraji G, Davidzohn A, Gursoy M, Gursoy U, Shapira L, Wilensky A. Membrane barriers for guided bone regeneration: An overview of available biomaterials. Periodontol 2000 2023; 93:56-76. [PMID: 37855164 DOI: 10.1111/prd.12502] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/21/2023] [Accepted: 05/29/2023] [Indexed: 10/20/2023]
Abstract
Dental implants revolutionized the treatment options for restoring form, function, and esthetics when one or more teeth are missing. At sites of insufficient bone, guided bone regeneration (GBR) is performed either prior to or in conjunction with implant placement to achieve a three-dimensional prosthetic-driven implant position. To date, GBR is well documented, widely used, and constitutes a predictable and successful approach for lateral and vertical bone augmentation of atrophic ridges. Evidence suggests that the use of barrier membranes maintains the major biological principles of GBR. Since the material used to construct barrier membranes ultimately dictates its characteristics and its ability to maintain the biological principles of GBR, several materials have been used over time. This review, summarizes the evolution of barrier membranes, focusing on the characteristics, advantages, and disadvantages of available occlusive barrier membranes and presents results of updated meta-analyses focusing on the effects of these membranes on the overall outcome.
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Affiliation(s)
- Gabriel Mizraji
- Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - Mervi Gursoy
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland
- Oral Health Care, Welfare Division, City of Turku, Turku, Finland
| | - Ulvi Gursoy
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland
| | - Lior Shapira
- Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Asaf Wilensky
- Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
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Pla R, Sanz-Esporrin J, Noguerol F, Vignoletti F, Gamarra P, Sanz M. A Synthetic Bio-Absorbable Membrane in Guided Bone Regeneration in Dehiscence-Type Defects: An Experimental In Vivo Investigation in Dogs. Bioengineering (Basel) 2023; 10:841. [PMID: 37508867 PMCID: PMC10376221 DOI: 10.3390/bioengineering10070841] [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: 05/04/2023] [Revised: 06/15/2023] [Accepted: 06/21/2023] [Indexed: 07/30/2023] Open
Abstract
This study aimed to determine the performance and characteristics of a synthetic barrier membrane of polylactic acid and acetyl butyl citrate (PLAB) for the lateral bone augmentation of peri-implant dehiscence defects (mean height × depth = 3 mm × 1 mm). In eight dogs, three treatment groups were randomly allocated at each chronic peri-implant dehiscence-type defect: (i) a deproteinized bovine bone mineral covered by a synthetic barrier membrane (test group), (ii) a deproteinized bovine bone mineral covered by a natural collagen membrane (positive control), and (iii) a synthetic barrier membrane (negative control). After 4 and 12 weeks of submerged healing, dissected tissue blocks were processed for calcified and decalcified histological analysis. Histometric measurements for tissue and bone width were performed, and bone-to-implant contact and alkaline phosphatase expression where measured. After 4 and 12 weeks of healing, no statistical differences between the groups were observed for the histometric measurements. The expression of alkaline phosphatase was higher in the positive control group after 4 weeks followed by the positive and negative controls (5.25 ± 4.09, 4.46 ± 3.03, and 4.35 ± 2.28%, p > 0.05) and 12 weeks followed by the negative and positive controls (4.3 ± 2.14, 3.21 ± 1.53, and 2.39 ± 1.03%, p > 0.05). Concerning the bone-to-implant contact, after 4 weeks, the test group obtained the highest results (39.54 ± 48.7) vs. (31.24 ± 42.6) and (20.23 ± 36.1), respectively, while after 12 weeks, the positive control group obtained the highest Bone to imaplant contact (BIC) results, followed by the test and negative controls, (35.91 ± 24.9) vs. (18.41 ± 20.5) and (24.3 ± 32.1), respectively; no statistically significant differences were obtained. Within the limitations of the study, new bone formation can be achieved in guided bone regeneration procedures simultaneously with implant placement either with the use of a PLAB membrane or a native collagen membrane, although these differences were not statistically significant.
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Affiliation(s)
- Rafael Pla
- Faculty of Dentistry, University Complutense of Madrid (UCM), 28040 Madrid, Spain
| | - Javier Sanz-Esporrin
- Faculty of Dentistry, University Complutense of Madrid (UCM), 28040 Madrid, Spain
| | - Fernando Noguerol
- Faculty of Dentistry, University Complutense of Madrid (UCM), 28040 Madrid, Spain
| | - Fabio Vignoletti
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, Faculty of Dentistry, University Complutense of Madrid (UCM), 28040 Madrid, Spain
| | - Pablo Gamarra
- Faculty of Dentistry, University Complutense of Madrid (UCM), 28040 Madrid, Spain
| | - Mariano Sanz
- Faculty of Dentistry, University Complutense of Madrid (UCM), 28040 Madrid, Spain
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, Faculty of Dentistry, University Complutense of Madrid (UCM), 28040 Madrid, Spain
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Almogy M, Moses O, Schiffmann N, Weinberg E, Nemcovsky CE, Weinreb M. Addition of Resolvins D1 or E1 to Collagen Membranes Mitigates Their Resorption in Diabetic Rats. J Funct Biomater 2023; 14:jfb14050283. [PMID: 37233393 DOI: 10.3390/jfb14050283] [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: 04/15/2023] [Revised: 05/14/2023] [Accepted: 05/16/2023] [Indexed: 05/27/2023] Open
Abstract
Uncontrolled diabetes is characterized by aberrant inflammatory reactions and increased collagenolysis. We have reported that it accelerates the degradation of implanted collagen membranes (CM), thus compromising their function in regenerative procedures. In recent years, a group of physiological anti-inflammatory agents called specialized pro-resolving lipid mediators (SPMs) have been tested as a treatment for various inflammatory conditions, either systemically or locally, via medical devices. Yet, no study has tested their effect on the fate of the biodegradable material itself. Here, we measured the in vitro release over time of 100 or 800 ng resolvin D1 (RvD1) incorporated into CM discs. In vivo, diabetes was induced in rats with streptozotocin, while buffer-injected (normoglycemic) rats served as controls. Resolvins (100 or 800 ng of RvD1 or RvE1) were added to biotin-labeled CM discs, which were implanted sub-periosteally over the calvaria of rats. Membrane thickness, density, and uniformity were determined by quantitative histology after 3 weeks. In vitro, significant amounts of RvD1 were released over 1-8 days, depending on the amount loaded. In vivo, CMs from diabetic animals were thinner, more porous, and more variable in thickness and density. The addition of RvD1 or RvE1 improved their regularity, increased their density, and reduced their invasion by the host tissue significantly. We conclude that addition of resolvins to biodegradable medical devices can protect them from excessive degradation in systemic conditions characterized by high degree of collagenolysis.
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Affiliation(s)
- Michal Almogy
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel Aviv-Yafo 6997801, Israel
- Department of Periodontology and Implant Dentistry, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel Aviv-Yafo 6997801, Israel
| | - Ofer Moses
- Department of Periodontology and Implant Dentistry, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel Aviv-Yafo 6997801, Israel
| | - Nathan Schiffmann
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel Aviv-Yafo 6997801, Israel
| | - Evgeny Weinberg
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel Aviv-Yafo 6997801, Israel
- Department of Periodontology and Implant Dentistry, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel Aviv-Yafo 6997801, Israel
| | - Carlos E Nemcovsky
- Department of Periodontology and Implant Dentistry, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel Aviv-Yafo 6997801, Israel
| | - Miron Weinreb
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel Aviv-Yafo 6997801, Israel
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Gil ACK, Prado MM, Rocha LRD, Benfatti C, Schuldt Filho G, Almeida JD. In vitro evaluation of membranes for regenerative procedures against oral bacteria. Braz Dent J 2023; 34:57-65. [PMID: 37466526 PMCID: PMC10355258 DOI: 10.1590/0103-6440202305060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 03/20/2023] [Indexed: 07/20/2023] Open
Abstract
The current literature on guided bone regeneration (GBR) and guided tissue regeneration (GTR) membrane contamination reports that the physicochemical characteristics of these biomaterials might influence affinity to bacteria, which appears to be a major drawback for the clinical outcome of the regenerative procedures. Thus, this study aimed to evaluate, in vitro, a multispecies biofilm adherence and passage of bacteria through different types of commercially available membranes for GTR/GBR. Four types of membranes were tested (n=12): LC) Lumina Coat®; JS) Jason®; BG) Biogide®; and LP) Lumina PTFE®. Aluminum foil (AL) simulated an impermeable barrier and was used as the control. The membranes were adapted to specific apparatus and challenged with a mixed bacterial culture composed of A. actinomycetemcomitans b, S. mutans, S. mitis, and A. israelii. After 2 h or 7 days, bacterial adhesion and passage of bacteria were evaluated through CFU counting, which was analyzed by two-way ANOVA e post hoc Tukey, at a 5% significance level. Representative areas of two membranes of each group were analyzed through scanning electron microscopy (SEM) to assess the morphology and organization of the biofilm over the membrane fibers. LC and LP presented similar values of adhered bacterial cells (p > 0.05), significantly inferior when compared to the other groups, in both time points (p < 0.05). All the tested groups were permeable to bacterial cells, with no significant difference between the trial period of 2 h and 7 days (p > 0.05). SEM analyses demonstrated that adhered bacteria number increased throughout the time points (2 h < 7 days). Commercially available biological membranes demonstrated intense bacterial adherence and passage of bacteria, which increased throughout the trial period.
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Affiliation(s)
- Ana Clara Kuerten Gil
- Department of Implant Dentistry, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Maick Meneguzzo Prado
- Department of Chemical Engineering, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Laura Rhoden da Rocha
- Department of Endodontics, University of Southern Santa Catarina (UNISUL), Palhoça, Santa Catarina, Brazil
| | - César Benfatti
- Department of Implant Dentistry, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Guenther Schuldt Filho
- Department of Implant Dentistry, University of Southern Santa Catarina (UNISUL), Palhoça, Santa Catarina, Brazil
| | - Josiane de Almeida
- Department of Endodontics, University of Southern Santa Catarina (UNISUL), Palhoça, Santa Catarina, Brazil
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Park WB, Crasto GJ, Han JY, Kang P, Lim HC. Bone Regenerative Potential of Cross-Linked Collagen Membrane in Peri-Implant Osseous Defect: Case Series with Histologic/Micro-Computed Tomographic Findings. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59010176. [PMID: 36676800 PMCID: PMC9861024 DOI: 10.3390/medicina59010176] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/18/2023]
Abstract
The role of a barrier membrane is crucial in guided bone regeneration (GBR) for space creation and cell occlusiveness. Those properties of the membrane should be sustained for a sufficient period. For such purpose, several cross-linked collagen membranes were introduced and demonstrated favorable clinical outcomes. However, histologic data were not sufficient to support the effect of cross-linked collagen membranes. In the present case series, healing after GBR using a cross-linked collagen membrane was investigated in-depth via histologic and micro-computed tomographic (micro-CT) analyses. 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide cross-linked collagen membrane was used in GBR for treating various peri-implant bone defects in seven patients. After 4-7 months of healing, newly formed tissue of hard consistency was observed over the implant platform. This tissue was carefully harvested and assessed. In micro-CT and histological analyses, evident new bone formation was revealed, especially in the vicinity of the collagen membrane. Moreover, it was histologically found that some newly formed bone was in intimate contact with the membrane. Although the exact mechanism of bone regeneration in the present cases was not clearly elucidated, the cross-linked collagen membrane appeared to contribute to ossification in GBR. Further studies are needed to confirm the findings of the present case series.
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Affiliation(s)
- Won-Bae Park
- Private Practice in Periodontics and Implant Dentistry, Seoul 02771, Republic of Korea
| | - Gazelle Jean Crasto
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, Columbia University, #PH7E-110, 630 W. 168 St., New York, NY 10032, USA
| | - Ji-Young Han
- Department of Periodontology, Division of Dentistry, College of Medicine, Hanyang University, Seoul 04763, Republic of Korea
| | - Philip Kang
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, Columbia University, #PH7E-110, 630 W. 168 St., New York, NY 10032, USA
- Correspondence: (P.K.); (H.-C.L.); Tel.: +82-2-958-9382 (H.-C.L.)
| | - Hyun-Chang Lim
- Department of Periodontology, Kyung Hee University College of Dentistry, Periodontal-Implant Clinical Research Institute, Kyung Hee University Medical Center, Seoul 02447, Republic of Korea
- Correspondence: (P.K.); (H.-C.L.); Tel.: +82-2-958-9382 (H.-C.L.)
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12
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Bang JY, Youn KE, Kim RH, Song M. Effect of the amnion-chorion or collagen membrane as a matrix on the microenvironment during a regenerative endodontic procedure. J Endod 2022; 48:1285-1293.e2. [PMID: 35850299 DOI: 10.1016/j.joen.2022.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/13/2022] [Accepted: 07/06/2022] [Indexed: 12/29/2022]
Abstract
INTRODUCTION During regenerative endodontic procedures, the microenvironment of the canal is formed by the degree of disinfection and release of ions from the applied materials onto the top surface. This study aimed to characterize the effects of amnion-chorion membrane (ACM) and collagen membrane (CM) on pulp-dentin regeneration compared to calcium silicate cements (CSCs), focusing on cell migration, mineralization potential, anti-inflammation, and angiogenesis. METHODS Two CSCs and two membranes were used: ProRoot® MTA (PM; Dentsply, Tulsa, OK, USA), RetroMTA® (RM; BioMTA, Seoul, Korea), Collagen Membrane® (CM; Genoss, Suwon, Korea), and BioXclude® (ACM; Snoasis Medical, Colorado, USA). Transwell and scratch assays were used to evaluate cell migration and wound healing. Mineralization potential was evaluated using alkaline phosphatase (ALP) activity, alizarin red S staining, and quantitative real-time-polymerase chain reaction (qRT-PCR) for the expression of marker genes. qRT-PCR was used to measure the levels of angiogenic genes and inflammatory mediators. An endothelial tube formation assay was used to assess angiogenesis. RESULTS The membranes showed superior migration and wound healing compared with CSCs. Except for RM, PM and the two membranes showed high ALP activity and mineralization nodule formation and upregulated mRNA expression of markers for mineralization. Membranes upregulated the mRNA of angiogenesis genes and increased the capillary tube formation of endothelial cells compared to CSCs. Furthermore, the membrane matrix decreased the expression of inflammatory genes. CONCLUSIONS CM and ACM showed prominent cell migration, angiogenesis, and healing effects against inflammation, as well as comparable mineralization potential compared to CSCs, recommending the use of membrane as a matrix.
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Affiliation(s)
- Ji Young Bang
- Department of Conservative Dentistry, College of Dentistry, Dankook University, Cheonan, Korea
| | - Kyeong Eun Youn
- Department of Conservative Dentistry, College of Dentistry, Dankook University, Cheonan, Korea
| | - Reuben H Kim
- The Shapiro Family Laboratory of Viral Oncology and Aging Research, UCLA School of Dentistry, Los Angeles, CA, USA; Section of Restorative Dentistry, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Minju Song
- Department of Conservative Dentistry, College of Dentistry, Dankook University, Cheonan, Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Korea.
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Vallecillo C, Toledano-Osorio M, Vallecillo-Rivas M, Toledano M, Osorio R. In Vitro Biodegradation Pattern of Collagen Matrices for Soft Tissue Augmentation. Polymers (Basel) 2021; 13:polym13162633. [PMID: 34451173 PMCID: PMC8399555 DOI: 10.3390/polym13162633] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 02/06/2023] Open
Abstract
Collagen matrices have become a great alternative to the use of connective tissue grafts for soft tissue augmentation procedures. One of the main problems with these matrices is their volume instability and rapid degradation. This study has been designed with the objective of examining the degradation of three matrices over time. For this purpose, pieces of 10 × 10 mm2 of Fibro-Gide, Mucograft and Mucoderm were submitted to three different degradation tests-(1) hydrolytic degradation in phosphate buffer solution (PBS); (2) enzyme resistance, using a 0.25% porcine trypsin solution; and (3) bacterial collagenase resistance (Clostridium histolyticum)-over different immersion periods of up to 50 days. Weight measurements were performed with an analytic microbalance. Thickness was measured with a digital caliper. A stereomicroscope was used to obtain the matrices' images. ANOVA and Student-Newman-Keuls tests were used for mean comparisons (p < 0.05), except when analyzing differences between time-points within the same matrix and solution, where pair-wise comparisons were applied (p < 0.001). Fibro-Gide attained the highest resistance to all degradation challenges. The bacterial collagenase solution was shown to constitute the most aggressive test as all matrices presented 100% degradation before 14 days of storage.
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Affiliation(s)
- Cristina Vallecillo
- Faculty of Dentistry, Colegio Máximo de Cartuja s/n, University of Granada, 18071 Granada, Spain; (C.V.); (M.V.-R.); (M.T.); (R.O.)
- Medicina Clínica y Salud Pública PhD Programme, University of Granada, 18071 Granada, Spain
| | - Manuel Toledano-Osorio
- Faculty of Dentistry, Colegio Máximo de Cartuja s/n, University of Granada, 18071 Granada, Spain; (C.V.); (M.V.-R.); (M.T.); (R.O.)
- Medicina Clínica y Salud Pública PhD Programme, University of Granada, 18071 Granada, Spain
- Correspondence: ; Tel.: +34-958-243-789
| | - Marta Vallecillo-Rivas
- Faculty of Dentistry, Colegio Máximo de Cartuja s/n, University of Granada, 18071 Granada, Spain; (C.V.); (M.V.-R.); (M.T.); (R.O.)
- Medicina Clínica y Salud Pública PhD Programme, University of Granada, 18071 Granada, Spain
| | - Manuel Toledano
- Faculty of Dentistry, Colegio Máximo de Cartuja s/n, University of Granada, 18071 Granada, Spain; (C.V.); (M.V.-R.); (M.T.); (R.O.)
| | - Raquel Osorio
- Faculty of Dentistry, Colegio Máximo de Cartuja s/n, University of Granada, 18071 Granada, Spain; (C.V.); (M.V.-R.); (M.T.); (R.O.)
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Gueldenpfennig T, Houshmand A, Najman S, Stojanovic S, Korzinskas T, Smeets R, Gosau M, Pissarek J, Emmert S, Jung O, Barbeck M. The Condensation of Collagen Leads to an Extended Standing Time and a Decreased Pro-inflammatory Tissue Response to a Newly Developed Pericardium-based Barrier Membrane for Guided Bone Regeneration. In Vivo 2021; 34:985-1000. [PMID: 32354884 DOI: 10.21873/invivo.11867] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/18/2020] [Accepted: 02/25/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND/AIM A new manufacturing process has been established for the condensation of collagen derived from porcine pericardium to develop a new dental barrier membrane (CPM) that can provide a long barrier functionality. A native collagen membrane (PM) was used as control. MATERIALS AND METHODS Established in vitro procedures using L929 and MC3T3 cells were used for cytocompatibility analyses. For the in vivo study, subcutaneous implantation of both membrane types in 40 BALB/c mice and established histological, immuno histochemical and histomorphometrical methods were conducted. RESULTS Both the in vitro and in vivo results revealed that the CPM has a biocompatibility profile comparable to that of the control membrane. The new CPM induced a tissue reaction including more M2-macrophages. CONCLUSION The CPM is fully biocompatible and seems to support the early healing process. Moreover, the new biomaterial seems to prevent cell ingrowth for a longer period of time, making it ideally suited for GBR procedures.
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Affiliation(s)
- Tristan Gueldenpfennig
- University Hospital Hamburg-Eppendorf, Hamburg, Germany.,Werner Forßmann Hospital Eberswalde, Eberswalde, Germany
| | | | - Stevo Najman
- Department for Cell and Tissue Engineering Institute of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Sanja Stojanovic
- Department for Cell and Tissue Engineering Institute of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia
| | | | - Ralf Smeets
- University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Martin Gosau
- University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | | | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Ole Jung
- University Hospital Hamburg-Eppendorf, Hamburg, Germany.,Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Mike Barbeck
- University Hospital Hamburg-Eppendorf, Hamburg, Germany .,BerlinAnalytix GmbH, Berlin, Germany
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Hong I, Khalid AW, Pae HC, Song YW, Cha JK, Lee JS, Paik JW, Choi SH. Diverse patterns of bone regeneration in rabbit calvarial defects depending on the type of collagen membrane. J Periodontal Implant Sci 2021; 51:40-52. [PMID: 33634614 PMCID: PMC7920838 DOI: 10.5051/jpis.2004180209] [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: 07/05/2020] [Revised: 08/25/2020] [Accepted: 11/09/2020] [Indexed: 12/15/2022] Open
Abstract
PURPOSE Various crosslinking methods have been introduced to increase the longevity of collagen membranes. The aim of this study was to compare and evaluate the degradation and bone regeneration patterns of 3 collagen membranes. METHODS Four 8-mm-diameter circular bone defects were created in the calvaria of 10 rabbits. In each rabbit, each defect was randomly allocated to 1) the sham control group, 2) the non-crosslinked collagen sponge (NS) group, 3) the chemically crosslinked collagen membrane (CCM) group, or 4) the biphasic calcium phosphate (BCP)-supplemented ultraviolet (UV)-crosslinked collagen membrane (UVM) group. Each defect was covered with the allocated membrane without any graft material. Rabbits were sacrificed at either 2 or 8 weeks post-surgery, and radiographic and histologic analyses were done. RESULTS New bone formed underneath the membrane in defects in the CCM and UVM groups, with a distinctive new bone formation pattern, while new bone formed from the base of the defect in the NS and control groups. The CCM maintained its shape until 8 weeks, while the UVM and NS were fully degraded at 8 weeks; simultaneously, sustained inflammatory infiltration was found in the margin of the CCM, while it was absent in the UVM. In conclusion, the CCM showed longer longevity than the UVM, but was accompanied by higher levels of inflammation. CONCLUSIONS Both the CCM and UVM showed distinctive patterns of enhancement in new bone formation in the early phase. UV crosslinking can be a biocompatible alternative to chemical crosslinking.
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Affiliation(s)
- Inpyo Hong
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Alharthi Waleed Khalid
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Hyung Chul Pae
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Young Woo Song
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jae Kook Cha
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jung Seok Lee
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jeong Won Paik
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Seong Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea.
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The Impact of Double Layer Membrane Technique on Bone Regeneration in Postextraction Alveoli – A Pathohistological Experimental Study in Dogs. ACTA VET-BEOGRAD 2020. [DOI: 10.2478/acve-2020-0033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Post extraction alveolar ridge preservation is a preventive oral surgical procedure aimed to preserve the dimensions of the alveolar ridge after removal of the teeth. According to literature data, the utilization of guided bone regeneration for this purpose is absolutely justified. The aim of this study was to examine the effect of resorbable collagen membranes placed in two layers in respect to the application of membranes placed in one layer to the degree of bone regeneration after a tooth extraction. This experimental study was conducted on six adult dogs. In the first phase all four premolars were extracted on both sides in the lower jaw. After the volume-standardisation with bone drill, three post extraction alveoli were filled with bone substitute of equine origin and then covered with: collagen bioresor bable membrane of porcine origin; collagen bioresorbable membrane of equine origin; pericardial bioresorbable membrane of equine origin. The membranes on the left side were placed in single-layer and on the right side in double-layer manner. After different monitoring periods, histopathological analysis of the samples taken from the experimental regions was performed. A different degree of bone regeneration was achieved between experimental regions in which membranes were placed in one layer and those where membranes were placed in two layers. There was no difference between regions where membranes of different origin were placed in the same manner. The procedure of covering the post extraction alveoli, filled with bone substitute and with resorbable membranes placed in two layers resulted in a higher degree of bone regeneration compared to those where resorbable membranes were placed in one layer.
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Neto AMD, Sartoretto SC, Duarte IM, Resende RFDB, Neves Novellino Alves AT, Mourão CFDAB, Calasans-Maia J, Montemezzi P, Tristão GC, Calasans-Maia MD. In Vivo Comparative Evaluation of Biocompatibility and Biodegradation of Bovine and Porcine Collagen Membranes. MEMBRANES 2020; 10:membranes10120423. [PMID: 33333940 PMCID: PMC7765348 DOI: 10.3390/membranes10120423] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 02/07/2023]
Abstract
Mechanical barriers prevent the invasion of the surrounding soft tissues within the bone defects. This concept is known as Guided Bone Regeneration (GBR). The knowledge about the local tissue reaction and the time of degradation of absorbable membranes favors the correct clinical indication. This study aimed to evaluate the biocompatibility and biodegradation of a bovine collagen membrane (Lyostypt®, São Gonçalo, Brazil) and compare it to a porcine collagen membrane (Bio-Gide®) implanted in the subcutaneous tissue of mice, following ISO 10993-6:2016. Thirty Balb-C mice were randomly divided into three experimental groups, LT (Lyostypt®), BG (Bio-Gide®), and Sham (without implantation), and subdivided according to the experimental periods (7, 21, and 63 days). The BG was considered non-irritant at seven days and slight and moderate irritant at 21 and 63 days, respectively. The LT presented a small irritant reaction at seven days, a mild reaction after 21, and a reduction in the inflammatory response at 63 days. The biodegradation of the LT occurred more rapidly compared to the BG after 63 days. This study concluded that both membranes were considered biocompatible since their tissue reactions were compatible with the physiological inflammatory process; however, the Bio-Gide® was less degraded during the experimental periods, favoring the guided bone regeneration process.
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Affiliation(s)
- Abdu Mansur Dacache Neto
- Graduate Program, Dentistry School, Universidade Federal Fluminense, Niteroi 24020-140, RJ, Brazil;
| | - Suelen Cristina Sartoretto
- Oral Surgery Department, Dentistry School, Universidade Veiga de Almeida, Rio de Janeiro 20271-020, RJ, Brazil;
- Oral Surgery Department, Dentistry School, Universidade Iguaçu, Nova Iguaçu 26260-045, RJ, Brazil;
- Clinical Research Laboratory in Dentistry, Universidade Federal Fluminense, Niteroi 24020-140, RJ, Brazil
| | - Isabelle Martins Duarte
- Post-Graduation Program in Dentistry, Universidade Veiga de Almeida, Rio de Janeiro 20271-020, RJ, Brazil;
| | - Rodrigo Figueiredo de Brito Resende
- Oral Surgery Department, Dentistry School, Universidade Iguaçu, Nova Iguaçu 26260-045, RJ, Brazil;
- Oral Surgery Department, Universidade Federal Fluminense, Niteroi 24020-140, RJ, Brazil
| | | | | | - Jose Calasans-Maia
- Orthodontics Department, Universidade Federal Fluminense, Niteroi 24020-140, RJ, Brazil;
| | | | | | - Mônica Diuana Calasans-Maia
- Clinical Research Laboratory in Dentistry, Universidade Federal Fluminense, Niteroi 24020-140, RJ, Brazil
- Oral Surgery Department, Universidade Federal Fluminense, Niteroi 24020-140, RJ, Brazil
- Correspondence: ; Tel.: +55-21-98153-5884
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Wongpairojpanich J, Kijartorn P, Suwanprateeb J, Buranawat B. Effectiveness of bilayer porous polyethylene membrane for alveolar ridge preservation: A randomized controlled trial. Clin Implant Dent Relat Res 2020; 23:73-85. [PMID: 33230978 DOI: 10.1111/cid.12965] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/27/2020] [Accepted: 10/31/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Porous polyethylene has been successfully used in several medical applications with good outcomes. Based on this, a new bilayer porous polyethylene membrane (B-PPM) was developed for possibly being used as a membrane in alveolar ridge preservation. PURPOSE To evaluate the clinical efficacy of a new B-PPM in comparison to high-density polytetrafluoroethylene membrane (d-PTFE) in alveolar ridge preservation. MATERIALS AND METHODS Thirty patients were randomized into two groups according to the membranes used to cover the socket (B-PPM or d-PTFE). Wound healing was monitored at day 1, 3, 7, 14, 28, and 4 months postoperatively. Dimensional changes of alveolar ridge were measured immediately after tooth extraction and at 4 months later using intraoral scanner and cone beam computed tomography. Bone cores were harvested before implant placement. Implant stability at insertion and prior to prosthesis delivery were also measured. RESULTS No significant difference in socket wound closure between groups was observed excepting at day 14 that B-PPM showed a faster wound closure than d-PTFE (P = .03). Greater bone resorptions were seen on buccal than lingual side and on coronal than apical part of the alveolar ridge. No significant difference in dimensional changes of alveolar ridge, new bone formation, connective tissue content, residual bone grafts, and implant stability between two groups. CONCLUSION B-PPPM was safe and effective for alveolar ridge preservation.
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Affiliation(s)
- Jirapa Wongpairojpanich
- Department of Implantology, Faculty of Dentistry, Thammasat University, Khlong Luang, Pathum Thani, Thailand
| | - Pennapa Kijartorn
- Department of Implantology, Faculty of Dentistry, Thammasat University, Khlong Luang, Pathum Thani, Thailand
| | - Jintamai Suwanprateeb
- Biofunctional Materials and Devices Research Group, National Metal and Materials Technology Center, National Science and Technology Development Agency, Khlong Luang, Pathum Thani, Thailand
| | - Borvornwut Buranawat
- Department of Implantology, Faculty of Dentistry, Thammasat University, Khlong Luang, Pathum Thani, Thailand
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吴 唯, 李 博, 刘 玉, 王 新. [Biodegradation properties of multi-laminated small intestinal submucosa]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2020; 52:564-569. [PMID: 32541993 PMCID: PMC7433422 DOI: 10.19723/j.issn.1671-167x.2020.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To study the biodegradation properties of multi-laminated small intestinal submucosa (mSIS) through in vitro and in vivo experiments, comparing with Bio-Gide, the most widely used collagen membrane in guided bone regeneration (GBR) technique, for the purpose of providing basis to investigate whether mSIS meets the requirements of GBR in dental clinics. METHODS The degradation properties were evaluated in vitro and in vivo. In vitro degradation was performed using prepared collagenase solution. Morphology of mSIS and Bio-Gide in degradation solution were observed and the degradation rate was calculated at different time points. In in vivo experiments, nine New Zealand rabbits were used for subcutaneous implantation and were divided into three groups according to observation intervals. Six unconnected subcutaneous pouches were made on the back of each animal and were embedded with mSIS and Bio-Gide respectively. At the end of weeks 4, 8, and 12 after operation, gross observation and HE staining were used to evaluate the degree of degradation and histocompatibility. RESULTS In vitro degradation experiments showed that mSIS membrane was completely degraded at the end of 12 days, while Bio-Gide was degraded at the end of 7 days. Besides, mSIS maintained its shape for longer time in the degradation solution than Bio-Gide, indicating that mSIS possessed longer degradation time, and had better ability to maintain space than Bio-Gide. In vivo biodegradation indicated that after 4 weeks of implantation, mSIS remained intact. Microscopic observation showed that collagen fibers were continuous with a few inflammatory cells that infiltrated around the membrane. Bio-Gide was basically intact and partially adhered with the surrounding tissues. HE staining showed that collagen fibers were partly fused with surrounding tissues with a small amount of inflammatory cells that infiltrated as well. Eight weeks after operation, mSIS was still intact, and was partly integrated with connective tissues, whereas Bio-Gide membrane was mostly broken and only a few residual fibers could be found under microscope. Only a small amount of mSIS debris could be observed 12 weeks after surgery, and Bio-Gide could hardly be found by naked eye and microscopic observation at the same time. CONCLUSION In vitro degradation time of mSIS is longer than that of Bio-Gide, and the space-maintenance ability of mSIS is better. The in vivo biodegradation time of subcutaneous implantation of mSIS is about 12 weeks and Bio-Gide is about 8 weeks, both of which possess good biocompatibility.
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Affiliation(s)
- 唯伊 吴
- />北京大学口腔医学院·口腔医院,修复科 国家口腔疾病临床医学研究中心 口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室, 北京 100081Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - 博文 李
- />北京大学口腔医学院·口腔医院,修复科 国家口腔疾病临床医学研究中心 口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室, 北京 100081Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - 玉华 刘
- />北京大学口腔医学院·口腔医院,修复科 国家口腔疾病临床医学研究中心 口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室, 北京 100081Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - 新知 王
- />北京大学口腔医学院·口腔医院,修复科 国家口腔疾病临床医学研究中心 口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室, 北京 100081Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Toledano M, Asady S, Toledano-Osorio M, García-Godoy F, Serrera-Figallo MA, Benítez-García JA, Osorio R. Differential Biodegradation Kinetics of Collagen Membranes for Bone Regeneration. Polymers (Basel) 2020; 12:polym12061290. [PMID: 32512861 PMCID: PMC7362079 DOI: 10.3390/polym12061290] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/21/2020] [Accepted: 06/02/2020] [Indexed: 02/07/2023] Open
Abstract
Native collagen-based membranes are used to guide bone regeneration; but due to their rapid biodegradation, this treatment is often unpredictable. The purpose of this study was to investigate the biodegradability of natural collagen membranes. Three non-cross-linked resorbable collagen barrier membranes were tested: Derma Fina (porcine dermis), Evolution Standard (equine pericardium) and Duo-Teck (equine lyophilized collagen felt). 10 × 10 mm2 pieces of membranes were submitted to three different degradation procedures: (1) hydrolytic degradation in phosphate buffer solution, (2) enzyme resistance, using a 0.25% porcine trypsin solution, and (3) bacterial (Clostridium histolyticum) collagenase resistance test. Weight measurements were performed with an analytic microbalance. Thickness was measured with a digital caliper. Membranes were analyzed at different time-points, up to 21 d of immersion. A stereomicroscope was used to obtain membranes’ images. ANOVA and Student Newman Keuls were used for mean comparisons (p < 0.05), except when analyzing differences between time-points within the same membrane and solution where pair-wise comparisons were applied (p < 0.001). Derma Fina attained the highest resistance to all degradation challenges. Duo-Teck was the most susceptible membrane to degradation, complete degradation occurred as soon as 8 h. The bacterial collagenase solution performed as the most aggressive test as all membranes presented 100% degradation before 21 d.
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Affiliation(s)
- Manuel Toledano
- Faculty of Dentistry, Dental Materials Section, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.T.); (S.A.); (J.A.B.-G.); (R.O.)
| | - Samara Asady
- Faculty of Dentistry, Dental Materials Section, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.T.); (S.A.); (J.A.B.-G.); (R.O.)
| | - Manuel Toledano-Osorio
- Faculty of Dentistry, Dental Materials Section, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.T.); (S.A.); (J.A.B.-G.); (R.O.)
- Correspondence: ; Tel.: +34-958-243-789
| | - Franklin García-Godoy
- College of Dentistry, Health Science Center, University of Tennessee, 875 Union Avenue, Memphis, TN 381632110, USA;
| | | | - José A. Benítez-García
- Faculty of Dentistry, Dental Materials Section, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.T.); (S.A.); (J.A.B.-G.); (R.O.)
| | - Raquel Osorio
- Faculty of Dentistry, Dental Materials Section, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.T.); (S.A.); (J.A.B.-G.); (R.O.)
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21
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Di Raimondo R, Sanz-Esporrín J, Plá R, Sanz-Martín I, Luengo F, Vignoletti F, Nuñez J, Sanz M. Alveolar crest contour changes after guided bone regeneration using different biomaterials: an experimental in vivo investigation. Clin Oral Investig 2019; 24:2351-2361. [PMID: 31707629 DOI: 10.1007/s00784-019-03092-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 09/22/2019] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To evaluate the changes in alveolar contour after guided bone regeneration (GBR) with two different combinations of biomaterials in dehiscence defects around implants. MATERIAL AND METHODS Chronic alveolar ridge defects were created bilaterally in the mandible of eight Beagle dogs. Once implants were placed, three treatment groups were randomly allocated to each peri-implant dehiscence defect: (i) test group received a bone substitute composed of hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP) covered by a cross-linked collagen membrane, (ii) positive control group with placement of deproteinized bovine bone mineral (DBBM) plus a porcine natural collagen membrane, and (iii) a negative control with no treatment. Two healing periods (8 and 16 weeks) were evaluated. Dental casts were optically scanned, the obtained files were uploaded into an image analysis software and superimposed to evaluate the linear changes. RESULTS In both healing periods, the gains in linear contours were higher in the test group and at the intermediate level (3 mm below the gingival margin). While at 8 weeks, no significant differences were found between the groups; at 16 weeks, the test and positive control groups demonstrated significant gains in contour compared with negative control. CONCLUSIONS GBR using different biomaterials significantly increased the buccal contours of the alveolar crest when used at dehiscence defects around dental implants. CLINICAL RELEVANCE Particulate highly porous synthetic bone substitute and a cross-linked collagen membrane demonstrated similar outcomes in terms of contour augmentation when compared to bovine xenograft (DBBM) and a collagen membrane.
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Affiliation(s)
- R Di Raimondo
- Section of Graduate Periodontology, University Complutense, Madrid, Spain
| | - J Sanz-Esporrín
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain
| | - R Plá
- Section of Graduate Periodontology, University Complutense, Madrid, Spain
| | - I Sanz-Martín
- Section of Graduate Periodontology, University Complutense, Madrid, Spain
| | - F Luengo
- Section of Graduate Periodontology, University Complutense, Madrid, Spain
| | - F Vignoletti
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain
| | - J Nuñez
- Section of Graduate Periodontology, University Complutense, Madrid, Spain
| | - Mariano Sanz
- Section of Graduate Periodontology, University Complutense, Madrid, Spain.
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain.
- Facultad de Odontología, Plaza Ramón y Cajal s/n (Ciudad Universitaria), 28040, Madrid, Spain.
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Limoee M, Moradipour P, Godarzi M, Arkan E, Behbood L. Fabrication and in-vitro Investigation of Polycaprolactone - (Polyvinyl Alcohol/Collagen) Hybrid Nanofiber as Anti-Inflammatory Guided Tissue Regeneration Membrane. Curr Pharm Biotechnol 2019; 20:1122-1133. [DOI: 10.2174/1389201020666190722161004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/23/2019] [Accepted: 07/13/2019] [Indexed: 01/03/2023]
Abstract
Background:
Periodontal disease is the most common oral condition that affects the tissue
surrounding the teeth. The oral cavity is colonized by an impressive array of micro-organisms, many of
which can colonize the implants such as Guided Tissue Regeneration (GTR) often utilized in recovering
procedures that result in inflammation interfering with the bone regeneration.
Methods:
In the current study, a nano-hybrid GTR membrane is developed as a heliacal structure scaffold
with localized drug delivery function (Ibuprofen) as an anti-inflammatory agent. Polycaprolactone
(PCL) and a blend of Polyvinyl alcohol (PVA)/collagen (Col) (50/50) were electrospun by electrospinning.
Ibuprofen (Ibu) was loaded once in the PCL context and once in the hydrophilic portion
(PVA/Col).
Results:
The in vitro release behavior was investigated in each case. Chemical and physical properties
were studied for each item. Morphology investigation indicated a heliacal structure with the total average
diameter of 1266 nm consististing of porous pores with the average diameter of 256nm.
Conclusion:
The membranes indicated proper mechanical properties and appropriate biodegradation
rate as a potential GTR membrane. The controlled and sustained release of Ibu was obtained from both
PCL and PVA/COL loaded membranes. Kinetic model study indicated the following zero-order and
Higuchi models for the optimum case of PCL loaded and PVA/Col Ibu loaded scaffolds respectively.
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Affiliation(s)
- Mazdak Limoee
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Pouran Moradipour
- Nano Drug Delivery research center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mahnaz Godarzi
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Elham Arkan
- Nano Drug Delivery research center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Leila Behbood
- Nano Drug Delivery research center, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Guided Bone Regeneration Using BioGlue As a Barrier Material With and Without Biphasic Calcium Phosphate. J Craniofac Surg 2019; 30:1308-1313. [PMID: 31163569 DOI: 10.1097/scs.0000000000005428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The aim of this study was to investigate the effects of Bioglue as a mechanical barrier with or without biphasic calcium phosphate (BCP) in a rat tibia model. Sixty Sprague Dawley male rats weighing 250 ± 20 g and 10 to 12 weeks of age were studied. Unicortical defects were created on the right tibia of all rats. Subjects were randomly divided into 3 groups. BioGlue group (24 rats); BioGlue alone, Graft group (24 rats); BioGlue + BCP and Control group; unfilled and uncovered (12 rats). Animals were euthanized at 7th, 21st, and 45th days postoperatively for histological and histomorphometric analyses. BioGlue material exhibited no adverse effects until the end of observation period. Bone-healing scores did not differ statistically between Control and BioGlue group, but found to be lower in Graft group on 21st and 45th days, (P < 0.001 and P < 0.01 on the 21st day and P < 0.01 and P < 0.05 on the 45th day, respectively). New bone formation in Graft group was found to be statistically different from Control group on the 7th and 21st days (P < 0.01 and P < 0.05 respectively), whereas no statistical difference was observed between BioGlue and Control group at all times. The present analysis indicates that BioGlue functioned well as a mechanical barrier allowing new bone formation. No additional benefit of combination treatment was detected in this study design and BCP did not offer any advantage for bone regeneration, thus it can serve as only a space maintainer.
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Kim YS, Na YC, Yoon HS, Huh WH, Kim JM. Short-term changes of human acellular dermal matrix (Megaderm) in a mouse model. Arch Craniofac Surg 2019; 20:10-16. [PMID: 30840814 PMCID: PMC6411522 DOI: 10.7181/acfs.2018.02243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 12/17/2018] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Physicians tend to overcorrect when applying the acellular dermal matrix for reconstructive option because of volume decrement problem after absorption comparing with initial volume. However, there are no studies on the exact volume decrement and absorption rate with commercial products in South Korea. To figure out absorption rate of acellular dermal matrix product in South Korea (Megaderm), authors designed this experiment. METHODS Nine mice were used and randomly divided into three groups by the time with sacrificing. The implant (Megaderm) was tailored to fit a cuboid form (1.0 cm× 1.0 cm in length and width and 2.0 mm in thickness). A skin incision was made at anterior chest with blade #15 scalpel with exposing the pectoralis major muscle. As hydrated Megaderm was located upon the pectoralis major muscle, the skin was sutured with Ethilon #5-0. After the surgical procedure, each animal group was sacrificed at 4, 8, and 12 weeks, respectively, for biopsies and histological analysis of the implants. All samples were stained with routine hematoxylin and eosin staining and Masson's trichrome staining and the thickness were measured. A measurements were analyzed using Friedman test. Statistically, the correlation between thicknesses of Megaderm before and after implantation was analyzed. RESULTS After sacrificing the animal groups at postoperative 4, 8, 12 weeks, the mean tissue thickness values were 2.10± 1.03 mm, 2.17± 0.21 mm, and 2.40± 0.20 mm (p= 0.368), respectively. The remaining ratios after absorption comparing with after initial hydrated Megaderm were 82.7%, 85.4%, and 94.5%, respectively. In histopathological findings, neovascularization and density of collagenous fiber was increased with time. CONCLUSION Author's hypothesis was absorption rate of implant would be increased over time. But in this experiment, there is no statistical significance between mean absorption thickness of implant and the time (p= 0.368). Also it can be affected by graft site, blood supply, and animals that were used in the experiment.
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Affiliation(s)
- Yang Seok Kim
- Department of Plastic and Reconstructive Surgery, Wonkwang University Hospital, Iksan, Korea
| | - Young Cheon Na
- Department of Plastic and Reconstructive Surgery, Wonkwang University Hospital, Iksan, Korea
| | - Hyun Sik Yoon
- Department of Plastic and Reconstructive Surgery, Wonkwang University Hospital, Iksan, Korea
| | - Woo Hoe Huh
- Department of Plastic and Reconstructive Surgery, Wonkwang University Hospital, Iksan, Korea
| | - Ji Min Kim
- Department of Plastic and Reconstructive Surgery, Wonkwang University Hospital, Iksan, Korea
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Gavazzoni A, Filho LI, Hernandes L. Analysis of bone formation and membrane resorption in guided bone regeneration using deproteinized bovine bone mineral versus calcium sulfate. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:167. [PMID: 30392111 DOI: 10.1007/s10856-018-6167-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 10/11/2018] [Indexed: 06/08/2023]
Abstract
Guided Bone Regeneration (GBR) is a technique based on the use of a physical barrier that isolates the region of bone regeneration from adjacent tissues. The objective of this study was to compare GBR, adopting a critical-size defect model in rat calvaria and using collagen membrane separately combined with two filling materials, each having different resorption rates. A circular defect 8 mm in diameter was made in the calvaria of Wistar rats. The defects were then filled with calcium sulfate (CaS group) or deproteinized bovine bone mineral (DBBM group) and covered by resorbable collagen membrane. The animals were killed 15, 30, 45 and 60 days after the surgical procedure. Samples were collected, fixed in 4% paraformaldehyde and processed for paraffin embedding. The resultant sections were stained with H&E for histological and histomorphometric study. For the histomorphometric study, the area of membrane was quantified along with the amount of bone formed in the region of the membrane. Calcium sulfate was reabsorbed more rapidly compared to DBBM. The CaS group had the highest percentages of remaining membrane at 15, 30, 45 and 60 days, compared to the DBBM group. The DBBM group had the highest amount of new bone at 45 and 60 days compared to the CaS group. Based on these results, it was concluded that the type of filling material may influence both the resorption of collagen membrane and amount of bone formed.
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Affiliation(s)
| | - Liogi Iwaki Filho
- Department of Dentistry, State University of Maringá, Maringá, Paraná, Brazil
| | - Luzmarina Hernandes
- Department of Morphological Sciences, State University of Maringá, Maringá, Paraná, Brazil.
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Efficacy of Collagen-Based Membranes in Alveolar Bone Augmentation. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8112048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Collagen-based membranes (CBMs) have similar permissive bone formation capabilities when compared to non-absorbable membranes. CBMs have been classified as non-cross-linked membranes (NCLMs) and cross-linked membranes (CLMs) depending on whether the cross-linking between the collagen fibers was artificially increased. The purpose of this study is to evaluate the bone maintenance capacity between NCLMs and CLMs by comparing resorption of regenerated bone. The inclusion criteria consisted of: (1) The use of a CBM, either being an NCLM or CLM for coverage of grafted bone; (2) follow-up for more than one year; (3) the presence of the patient's orthopantomographic X-ray (OPTG) immediately following the installation of implants and one year after. The bone resorption observed in the OPTG was determined by measuring the number of exposed threads of the implant. The number of thread exposures in the implant was compared according to CBM types. OPTGs taken immediately following the installation of implants and at one year after installation were compared. The subject of the measurement was always the implant in which the greatest number of exposed threads were present in each patient. A total of 56 subjects and 97 implants were used in this study. There was no significant difference between NCLM and CLM groups (p > 0.05). However, there was a statistically significant difference (p = 0.02) between the groups when a bone graft was applied to both the maxilla and the mandible. The average number of thread exposures was less than 1.5. In this study, no comparison was made between commonly known causes of bone loss and membrane types.
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Delayed bone healing by collagen membrane in early phase of 4 weeks. Oral Surg Oral Med Oral Pathol Oral Radiol 2018; 126:469-476. [PMID: 30274734 DOI: 10.1016/j.oooo.2018.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/12/2018] [Accepted: 06/24/2018] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Barrier membranes are important in maintaining space in guided bone regeneration process by preventing downgrowth of epithelial or connective tissue. In this study, the effects of resorbable membranes during the early stages of bone regeneration in rats with impaired bone healing capacity were investigated. STUDY DESIGN Twenty-eight rats were selected for this study. Half of the animals were selected for radiation therapy before surgical procedure (G3, G4). Animals were assigned into 4 groups (G1-G4). A circular defect was created in the central parietal bone. It was covered with resorbable membrane in G2 and G4. After 4 weeks, the animals were sacrificed. RESULTS At week 4, the new bone formation was observed around the margin of old bone in G1, G2 and G4 groups. Osteoclast was most abundant in the G1 group (18.3 ± 7.7) and least abundant in the G4 group (7.9 ± 4.7). The mean of osteocalcin levels in blood was the highest in the G2 group and lowest in the G3 group. Only G4 group showed significant difference in Runx2 levels between before-treatment and after- treatment. CONCLUSIONS Bone healing is adversely affected after radiation therapy. In addition, resorbable membranes can delay healing in the early stages of bone regeneration.
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Ma Z, Zheng J, Yang C, Xie Q, Liu X, Abdelrehem A. A new modified bone grafting technique for periodontally accelerated osteogenic orthodontics. Medicine (Baltimore) 2018; 97:e12047. [PMID: 30212935 PMCID: PMC6156025 DOI: 10.1097/md.0000000000012047] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The aim of this study was to introduce an improved surgical technique using a pouch design and tension-free wound closure for periodontally accelerated osteogenic orthodontics (PAOO) in the anterior alveolar region of the mandible.Patients with bone dehiscence and fenestrations on the buccal surfaces of the anterior mandible region underwent the modified PAOO technique (using a pouch design and tension-free closure). Postoperative symptoms were evaluated at 1 and 2 weeks intervals following the procedure. Probing depth (PD), gingival recession depth (GRD), and clinical attachment level (CAL) were assessed at the gingival recession sites at baseline, postoperative 6 and 12 months. Cone-beam computerized tomography (CBCT) was used for quantitative radiographic analyses at baseline, 1 week and 12 months after bone-augmentation procedure.The sample was composed of a total of 12 patients (2 males and 10 females; mean age, 21.9 years) with 72 teeth showing dehiscence/fenestrations and 17 sites presenting with gingival recessions. Clinical evaluations revealed a statistically significant reduction in swelling, pain, and clinical appearance from postoperative week 1 to week 2 (P < .05). Moreover, gingival recession sites exhibited a significant reduction in the GRD and an increase in CAL after surgery with mean root coverage of 69.8% at the end of observation period (P < .01). Both alveolar bone height and width increased after surgery (P < .01) and decreased during the 12-month follow-up (P < .01). However, compared with the baseline records, there was still a significant increase in alveolar bone volume (P < .01).This modified PAOO technique may have advantages in terms of soft and hard tissue augmentation, facilitating extensive bone augmentation and allowing the simultaneous correction of vertical and horizontal defects in the labial aspect of the mandibular anterior area.
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Affiliation(s)
- Zhigui Ma
- Department of Oral Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, PR China
| | - Jisi Zheng
- Department of Oral Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, PR China
| | - Chi Yang
- Department of Oral Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, PR China
| | - Qianyang Xie
- Department of Oral Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, PR China
| | - Xiaohan Liu
- Department of Oral Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, PR China
| | - Ahmed Abdelrehem
- Department of Craniomaxillofacial and Plastic Surgery, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
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Effect of Multilaminate Small Intestinal Submucosa as a Barrier Membrane on Bone Formation in a Rabbit Mandible Defect Model. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3270293. [PMID: 30018978 PMCID: PMC6029487 DOI: 10.1155/2018/3270293] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 04/19/2018] [Accepted: 05/20/2018] [Indexed: 12/14/2022]
Abstract
A barrier membrane (BM) is essential for guided bone regeneration (GBR) procedures. Absorbable BMs based on collagen have been widely applied clinically due to their excellent biocompatibility. The extracellular matrix (ECM) provides certain advantages that can compensate for the rapid degradation and insufficient mechanical strength of pure collagen membrane due to the porous scaffold structure. Recently, small intestinal submucosa (SIS), one of the most widely used ECM materials, has drawn much attention in bone tissue engineering. In this study, we adopted multilaminate SIS (mSIS) as a BM and evaluated its in vivo and in vitro properties. mSIS exhibited a multilaminate structure with a smooth upper surface and a significantly coarser bottom layer according to microscopic observation. Tensile strength was 13.10 ± 2.56 MPa. In in vivo experiments, we selected a rabbit mandibular defect model and subcutaneous implantation to compare osteogenesis and biodegradation properties with one of the most commonly used commercial collagen membranes. mSIS was retained for up to 3 months and demonstrated longer biodegradation time than commercial collagen membrane. Quantification of bone regeneration revealed significant differences in each group. Micro-computed tomography (micro-CT) revealed that the quantity and maturity of bones in the mSIS group were significantly higher than those in the blank control group (P < 0.05) and were similar to those in a commercial collagen membrane group (P > 0.05) at 4 and 12 weeks after surgery. Hematoxylin and eosin staining revealed large amounts of mature lamellar bone at 12 weeks in mSIS and commercial collagen membrane groups. Therefore, we conclude that mSIS has potential as a future biocompatible BM in GBR procedures.
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Martin-Thomé H, Bourdin D, Strube N, Saffarzadeh A, Morlock JF, Campard G, Evanno C, Hoornaert A, Layrolle P. Clinical Safety of a New Synthetic Resorbable Dental Membrane: A Case Series Study. J ORAL IMPLANTOL 2018; 44:138-145. [DOI: 10.1563/aaid-joi-d-17-00042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Dental membranes are commonly used in oral and maxillofacial surgery for the regeneration of small osseous defects. A new synthetic resorbable membrane has recently demonstrated its biocompatibility and bone regeneration capacity in preclinical studies. This membrane is made of poly(D,L-lactic/glycolic acid 85/15), has a bi-layered structure with a dense film to prevent gingival epithelial cell invasion, and a microfibrous layer to support osteogenic cells and bone healing. This membrane completely degrades by hydrolysis in 4 to 6 months without signs of inflammation. Based on this research, a clinical study was conducted to evaluate the safety of the new membrane in guided tissue regeneration (GTR). In total, 26 patients (age: 50.5 ± 12.4, min-max 31–72 years; male/female 42/58%) were operated on at 7 independent private dental practices. Dental surgeons used the membrane together with various bone fillers in GTR for immediate and delayed implant placement (23 cases, 88%) and, to a lesser extent, socket preservation (2 cases, 8%) and alveolar crest augmentation (1 case, 4%). Surgeons reported an easy placement of the membrane (satisfaction index: 3.8/5). Fourteen days postsurgery, 15 patients had no pain while the others declared minimal pain (verbal rating scale: 2.2/10), and none had minor or serious complications related to the membrane. Exposure of the membrane without loosening the biomaterial granules was observed in 3 cases while mucosa healed normally over time. At 4 months postimplantation, no infection or mucosal inflammation was reported, and the overall dentist satisfaction with the clinical performance of the membrane was 4.5/5 on average. This clinical study demonstrated that the new synthetic resorbable membrane is safe for guided bone tissue regeneration in various dental surgery indications.
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Affiliation(s)
| | | | | | | | | | | | | | - Alain Hoornaert
- CHU Nantes, Department of Implantology, Faculty of Dentistry, University of Nantes, France
| | - Pierre Layrolle
- Inserm, UMR 1238, Laboratory of Bone Sarcomas and Remodelling of Calcified Tissues, Faculty of Medicine, University of Nantes, France
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Jung UW, Cha JK, Vignoletti F, Nuñez J, Sanz J, Sanz M. Simultaneous lateral bone augmentation and implant placement using a particulated synthetic bone substitute around chronic peri-implant dehiscence defects in dogs. J Clin Periodontol 2017; 44:1172-1180. [DOI: 10.1111/jcpe.12802] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Ui-Won Jung
- Department of Periodontology; Research Institute for Periodontal Regeneration; College of Dentistry; Yonsei University; Seoul South Korea
| | - Jae-Kook Cha
- Department of Periodontology; Research Institute for Periodontal Regeneration; College of Dentistry; Yonsei University; Seoul South Korea
- Faculty of Odontology; Department of Periodontology; University Complutense of Madrid; Madrid Spain
| | - Fabio Vignoletti
- Faculty of Odontology; Department of Periodontology; University Complutense of Madrid; Madrid Spain
| | - Javier Nuñez
- Faculty of Odontology; Department of Periodontology; University Complutense of Madrid; Madrid Spain
| | - Javier Sanz
- Faculty of Odontology; Department of Periodontology; University Complutense of Madrid; Madrid Spain
| | - Mariano Sanz
- Faculty of Odontology; Department of Periodontology; University Complutense of Madrid; Madrid Spain
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Ozaki M, Takayama T, Yamamoto T, Ozawa Y, Nagao M, Tanabe N, Nakajima A, Suzuki N, Maeno M, Yamano S, Sato S. A collagen membrane containing osteogenic protein-1 facilitates bone regeneration in a rat mandibular bone defect. Arch Oral Biol 2017; 84:19-28. [PMID: 28938197 DOI: 10.1016/j.archoralbio.2017.09.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 08/31/2017] [Accepted: 09/07/2017] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Osteogenic protein-1 (OP-1) has shown osteoinductive activities and is useful for clinical treatments, including bone regeneration. Regenerative procedures using a bioabsorbable collagen membrane (BCM) are well established in periodontal and implant dentistry. We evaluated the subsequent effects of the BCM in combination with OP-1 on bone regeneration in a rat mandibular circular critical-sized bone defect in vivo. DESIGN We used 8 rats that received surgery in both sides of the mandible, and created the total 16 defects which were divided into 4 groups: Group 1; no treatment, as a control, Group 2; BCM alone, Group 3; BCM containing low dose 0.5μg of OP-1 (L-OP-1), and Group 4; BCM containing high dose 2.0μg of OP-1 (H-OP-1). Newly formed bone was evaluated by micro computed tomography (micro-CT) and histological analyses at 8 weeks postoperatively. In quantitative and qualitative micro-CT analyses of the volume of new bone formation, bone density, and percentage of new bone area was evaluated. RESULTS BCM with rhOP-1 significantly increased and accelerated bone volume, bone mineral density, and percentage of new bone area compared to control and BCM alone at 8 weeks after surgery; these enhancements in bone regeneration in the OP-1-treated groups were dose-dependent. CONCLUSIONS OP-1 delivered with a BCM may have effective osteoinductive potency and be a good combination for bone regeneration. The use of such a combination device for osteogenesis may result in safer and more predictable bone regenerative outcomes in the future.
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Affiliation(s)
- Manami Ozaki
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Tadahiro Takayama
- Department of Periodontology, Nihon University School of Dentistry, Tokyo, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan.
| | - Takanobu Yamamoto
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Yasumasa Ozawa
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Mayu Nagao
- Department of Periodontology, Nihon University School of Dentistry, Tokyo, Japan
| | - Natsuko Tanabe
- Department of Biochemistry, Nihon University School of Dentistry, Tokyo, Japan; Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Akira Nakajima
- Department of Orthodontics, Nihon University School of Dentistry, Tokyo, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Naoto Suzuki
- Department of Biochemistry, Nihon University School of Dentistry, Tokyo, Japan; Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Masao Maeno
- Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo, Japan; Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Seiichi Yamano
- Department of Prosthodontics, New York University College of Dentistry, NY, U.S.A
| | - Shuichi Sato
- Department of Periodontology, Nihon University School of Dentistry, Tokyo, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
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Dehydrothermally Cross-Linked Collagen Membrane with a Bone Graft Improves Bone Regeneration in a Rat Calvarial Defect Model. MATERIALS 2017; 10:ma10080927. [PMID: 28796152 PMCID: PMC5578293 DOI: 10.3390/ma10080927] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 07/29/2017] [Accepted: 08/05/2017] [Indexed: 11/17/2022]
Abstract
In this study, the bone regeneration efficacy of dehydrothermally (DHT) cross-linked collagen membrane with or without a bone graft (BG) material was evaluated in a critical-sized rat model. An 8-mm-diameter defect was created in the calvaria of 40 rats, which were randomized into four groups: (1) control; (2) DHT; (3) BG; and, (4) DHT + BG. Evaluations were made at 2 and 8 weeks after surgery using micro-computed tomographic (micro-CT), histological, and histomorphometric analyses. Micro-CT analysis showed an increase in the new bone volume (NBV) of the BG and DHT + BG groups at 2 weeks after surgery, representing a significant difference (p < 0.05). At 8 weeks after surgery, the NBV increased in all four groups. However, larger NBVs were observed in the BG and DHT + BG groups, and a significant difference was no longer observed between the two groups. Histologic analysis demonstrated that the graft materials sustained the center of the defect in the BG and DHT + BG groups, which was shown in histomorphometric analysis as well. These results suggest that DHT membrane is a safe biomaterial with adequate tissue integration, and has a positive effect on new bone formation. Moreover, the best effects were achieved when DHT was used in conjunction with BG materials.
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Teo L, Woo YJ, Kim DK, Kim CY, Yoon JS. Surgical Outcomes of Porcine Acellular Dermis Graft in Anophthalmic Socket: Comparison with Oral Mucosa Graft. KOREAN JOURNAL OF OPHTHALMOLOGY 2017; 31:9-15. [PMID: 28243018 PMCID: PMC5327181 DOI: 10.3341/kjo.2017.31.1.9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 12/01/2015] [Indexed: 11/23/2022] Open
Abstract
Purpose We describe our experience with the Permacol graft in anophthalmic socket reconstruction, and compare it to the autologous buccal mucosal graft, emphasizing the postoperative vascularization and contraction of each graft. Methods This was a retrospective comparative study. We measured the time necessary for the graft surface to be completely vascularized, as well as the fornix depth of the conjunctival sac in anophthalmic patients. Results Ten patients underwent Permacol graft reconstruction, with 44 undergoing buccal mucosal graft reconstruction. Seven eyelids (70%) in the Permacol group had a good outcome, with improvement in lower eyelid position and prosthesis retention. Nine out of 10 eyelids (90%) in this group showed complete vascularization of the graft at 2.6 ± 1.9 months postoperatively, while the grafted buccal mucosa was fully vascularized at 1.1 ± 0.3 months postoperatively (p < 0.01). Postoperative fornix depth in the Permacol group was 9.1 ± 2.2 mm, compared to 14.9 ± 4.5 mm in the buccal mucosal graft group (p < 0.01). Mean increases in fornix depth were 33.1% and 67.9% of the mean vertical length of the implanted graft. Conclusions The Permacol graft can be useful as spacer graft material in anophthalmic socket patients. It takes longer to vascularize, and undergoes greater graft shrinkage with time, compared to the buccal mucosal graft.
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Affiliation(s)
- Livia Teo
- Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.; Singapore National Eye Centre, Singapore, Singapore
| | - Young Jun Woo
- Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Dong Kyu Kim
- Yonsei University College of Medicine, Seoul, Korea
| | - Chang Yeom Kim
- Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jin Sook Yoon
- Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Fabrication of Novel Hydrogel with Berberine-Enriched Carboxymethylcellulose and Hyaluronic Acid as an Anti-Inflammatory Barrier Membrane. BIOMED RESEARCH INTERNATIONAL 2016; 2016:3640182. [PMID: 28119926 PMCID: PMC5227121 DOI: 10.1155/2016/3640182] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/01/2016] [Indexed: 01/29/2023]
Abstract
An antiadhesion barrier membrane is an important biomaterial for protecting tissue from postsurgical complications. However, there is room to improve these membranes. Recently, carboxymethylcellulose (CMC) incorporated with hyaluronic acid (HA) as an antiadhesion barrier membrane and drug delivery system has been reported to provide excellent tissue regeneration and biocompatibility. The aim of this study was to fabricate a novel hydrogel membrane composed of berberine-enriched CMC prepared from bark of the P. amurense tree and HA (PE-CMC/HA). In vitro anti-inflammatory properties were evaluated to determine possible clinical applications. The PE-CMC/HA membranes were fabricated by mixing PE-CMC and HA as a base with the addition of polyvinyl alcohol to form a film. Tensile strength and ultramorphology of the membrane were evaluated using a universal testing machine and scanning electron microscope, respectively. Berberine content of the membrane was confirmed using a UV-Vis spectrophotometer at a wavelength of 260 nm. Anti-inflammatory property of the membrane was measured using a Griess reaction assay. Our results showed that fabricated PE-CMC/HA releases berberine at a concentration of 660 μg/ml while optimal plasticity was obtained at a 30 : 70 PE-CMC/HA ratio. The berberine-enriched PE-CMC/HA had an inhibited 60% of inflammation stimulated by LPS. These results suggest that the PE-CMC/HA membrane fabricated in this study is a useful anti-inflammatory berberine release system.
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Silva ECE, Omonte SV, Martins AGV, de Castro HHO, Gomes HE, Zenóbio ÉG, de Oliveira PAD, Horta MCR, Souza PEA. Hyaluronic acid on collagen membranes: An experimental study in rats. Arch Oral Biol 2016; 73:214-222. [PMID: 27776288 DOI: 10.1016/j.archoralbio.2016.10.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 08/17/2016] [Accepted: 10/14/2016] [Indexed: 12/13/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the effect of hyaluronic acid (HA) in the structure and degradation patterns of BioGide® and OsseoGuard™ collagen membranes. HA mediates inflammation and acts in cell migration, adhesion, and differentiation, benefitting tissue remodeling and vascularization. These are desirable effects in guided regeneration procedures, but it is still unknown whether HA alters the barrier properties of absorbable membranes. DESIGN Bone defects were created in the calvaria of rats, which were treated with HA gel 1% (HA group) or simply filled with blood clot (control group), and covered with BioGide® or OsseoGuard™. The animals were euthanized after 1, 30, and 60days, and their calvarias were processed for histological analysis. RESULTS BioGide®, in both HA and control groups, showed vascularization, intense cell colonization, bone formation, and tissue integration at 30 and 60days. In contrast, Osseoguard™ presented minimal cellular colonization, and inflammatory reaction associated to foreign body reaction in both time points and groups. The HA group of BioGide® showed higher cell colonization (574.9±137.6) than the control group (269.1±70.83) at 60days (p<0.05). Despite this finding, the structure and degradation pattern were similar for BioGide® and Osseoguard™ in the HA and control groups. CONCLUSION The results suggest that HA did not interfere with tissue integration and structural degradation of BioGide® and Osseoguard™ membranes.
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Affiliation(s)
- Edson Costa E Silva
- Graduate Program in Dentistry, Department of Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil.
| | - Sheyla Viana Omonte
- Graduate Program in Dentistry, Department of Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Hayder Egg Gomes
- Undergraduate course, Department of Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil
| | - Élton Gonçalves Zenóbio
- Graduate Program in Dentistry, Department of Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Paulo Eduardo Alencar Souza
- Graduate Program in Dentistry, Department of Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil
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Won JY, Park CY, Bae JH, Ahn G, Kim C, Lim DH, Cho DW, Yun WS, Shim JH, Huh JB. Evaluation of 3D printed PCL/PLGA/
β
-TCP versus collagen membranes for guided bone regeneration in a beagle implant model. Biomed Mater 2016; 11:055013. [DOI: 10.1088/1748-6041/11/5/055013] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Hoornaert A, d'Arros C, Heymann MF, Layrolle P. Biocompatibility, resorption and biofunctionality of a new synthetic biodegradable membrane for guided bone regeneration. ACTA ACUST UNITED AC 2016; 11:045012. [PMID: 27509180 DOI: 10.1088/1748-6041/11/4/045012] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Membranes for guided bone regeneration (GBR) were prepared from the synthetic biodegradable polymer poly-D,L-lactic/glycolic acid (PLGA). This GBR membrane has a bi-layered structure with a dense film to prevent gingival fibroblast ingrowth and ensure mechanical function, and a micro-fibrous layer to support colonization by osteogenic cells and promote bone regeneration. Hydrolysis and biodegradation were both studied in vitro through soaking in phosphate buffered saline (PBS) and in vivo by implantation in the subcutis of rats for 4, 8, 16, 26, 48 and 52 weeks. Histology revealed an excellent colonization of the micro-fibrous layer by cells with a minimal inflammatory reaction during resorption. GBR using the synthetic PLGA membrane was evaluated on critical-size calvaria defects in rats for 4 and 8 weeks. Radiographs, micro-computed tomography and histology showed bone regeneration with the PLGA membrane, while the defects covered with a collagen membrane showed a limited amount of mineralized bone, similar to that of the defect left empty. The biofunctionality of the PLGA membranes was also compared to collagen membranes in mandible defects in rabbits, associated or not with beta-tricalcium phosphate granules. This study revealed that the bi-layered synthetic membrane made of PLGA was safer, more biocompatible, and had a greater controlled resorption rate and bone regeneration capacity than collagen membranes. This new PLGA membrane could be used in pre-implantology and peri-odontology surgery.
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Saghiri MA, Asatourian A, Garcia-Godoy F, Sheibani N. The role of angiogenesis in implant dentistry part II: The effect of bone-grafting and barrier membrane materials on angiogenesis. Med Oral Patol Oral Cir Bucal 2016; 21:e526-37. [PMID: 27031074 PMCID: PMC4920468 DOI: 10.4317/medoral.21200] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Accepted: 02/19/2016] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND In implant dentistry, bone substitute materials and barrier membranes are used in different treatments including guided bone regeneration (GBR), socket preservation, alveolar ridge augmentation, maxillary sinus elevation, and filling bony defects around the inserted dental implant. One of the most important factors in prognosis of treatments using these materials is the growth of new blood vessels in applied areas. Present review was performed to evaluate the effect of the bone-grafting and barrier membrane materials on angiogenesis events. MATERIAL AND METHODS An electronic search was performed in PubMed, MEDLINE, and EMBASE databases via OVID using the keywords mentioned in the PubMed and MeSH headings regarding the role of angiogenesis in implant dentistry from January 2000-April 2014. RESULTS Of the 5,622 articles identified in our initial search results, only 33 met the inclusion criteria set for this review. Among bone substitute materials the autogenous bone-grafts, and among the barrier membranes the collagenous membranes, had the highest angiogenic potentials. Other bone-grafting materials or membranes were mostly used with pro-angiogenic factors to enhance their angiogenic properties. CONCLUSIONS Angiogenesis is one of the key factors, which plays a critical role in success rate of GBR technique and is seriously considered in manufacturing bone-grafting and barrier membrane materials. However, there is still lack of clinical and in-vivo studies addressing the effect of angiogenesis in treatments using bone-grafting and barrier membrane materials.
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Affiliation(s)
- M-A Saghiri
- Departments of Ophthalmology &, Visual Sciences and Biomedical Engineering, University of Wisconsin School of Medicine, and Public health, Madison, WI, USA,
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Zhuang H, Bu S, Hua L, Darabi MA, Cao X, Xing M. Gelatin-methacrylamide gel loaded with microspheres to deliver GDNF in bilayer collagen conduit promoting sciatic nerve growth. Int J Nanomedicine 2016; 11:1383-94. [PMID: 27099497 PMCID: PMC4824364 DOI: 10.2147/ijn.s96324] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
In this study, we fabricated glial cell-line derived neurotrophic factor (GDNF)-loaded microspheres, then seeded the microspheres in gelatin-methacrylamide hydrogel, which was finally integrated with the commercial bilayer collagen membrane (Bio-Gide®). The novel composite of nerve conduit was employed to bridge a 10 mm long sciatic nerve defect in a rat. GDNF-loaded gelatin microspheres had a smooth surface with an average diameter of 3.9±1.8 μm. Scanning electron microscopy showed that microspheres were uniformly distributed in both the GelMA gel and the layered structure. Using enzyme-linked immunosorbent assay, in vitro release studies (pH 7.4) of GDNF from microspheres exhibited an initial burst release during the first 3 days (18.0%±1.3%), and then, a prolonged-release profile extended to 32 days. However, in an acidic condition (pH 2.5), the initial release percentage of GDNF was up to 91.2%±0.9% within 4 hours and the cumulative release percentage of GDNF was 99.2%±0.2% at 48 hours. Then the composite conduct was implanted in a 10 mm critical defect gap of sciatic nerve in a rat. We found that the nerve was regenerated in both conduit and autograft (AG) groups. A combination of electrophysiological assessment and histomorphometry analysis of regenerated nerves showed that axonal regeneration and functional recovery in collagen tube filled with GDNF-loaded microspheres (GM + CT) group were similar to AG group (P>0.05). Most myelinated nerves were matured and arranged densely with a uniform structure of myelin in a neat pattern along the long axis in the AG and GM + CT groups, however, regenerated nerve was absent in the BLANK group, left the 10 mm gap empty after resection, and the nerve fiber exhibited a disordered arrangement in the collagen tube group. These results indicated that the hybrid system of bilayer collagen conduit and GDNF-loaded gelatin microspheres combined with gelatin-methacrylamide hydrogels could serve as a new biodegradable artificial nerve guide for nerve tissue engineering.
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Affiliation(s)
- Hai Zhuang
- Department of Stomatology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China; Department of Mechanical Engineering, Biochemistry & Medical Genetics, University of Manitoba, Winnipeg, MB, Canada; Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada
| | - Shoushan Bu
- Department of Stomatology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China
| | - Lei Hua
- Department of Stomatology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China
| | - Mohammad A Darabi
- Department of Mechanical Engineering, Biochemistry & Medical Genetics, University of Manitoba, Winnipeg, MB, Canada; Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada
| | - Xiaojian Cao
- Department of Orthopedics, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China
| | - Malcolm Xing
- Department of Mechanical Engineering, Biochemistry & Medical Genetics, University of Manitoba, Winnipeg, MB, Canada; Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada
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Guided bone regeneration is promoted by the molecular events in the membrane compartment. Biomaterials 2016; 84:167-183. [DOI: 10.1016/j.biomaterials.2016.01.034] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 01/18/2016] [Indexed: 11/18/2022]
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Wang J, Wang L, Zhou Z, Lai H, Xu P, Liao L, Wei J. Biodegradable Polymer Membranes Applied in Guided Bone/Tissue Regeneration: A Review. Polymers (Basel) 2016; 8:E115. [PMID: 30979206 PMCID: PMC6431950 DOI: 10.3390/polym8040115] [Citation(s) in RCA: 176] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 03/20/2016] [Accepted: 03/24/2016] [Indexed: 12/14/2022] Open
Abstract
Polymer membranes have been widely used in guided tissue regeneration (GTR) and guided bone regeneration (GBR). In this review, various commercially available membranes are described. Much attention is paid to the recent development of biodegradable polymers applied in GTR and GBR, and the important issues of biodegradable polymeric membranes, including their classification, latest experimental research and clinical applications, as well as their main challenges are addressed. Herein, natural polymers, synthetic polymers and their blends are all introduced. Pure polymer membranes are biodegradable and biocompatible, but they lack special properties such as antibacterial properties, osteoconductivity, and thus polymer membranes loaded with functional materials such as antibacterial agents and growth factors show many more advantages and have also been introduced in this review. Despite there still being complaints about polymer membranes, such as their low mechanical properties, uncontrollable degradation speed and some other drawbacks, these problems will undoubtedly be conquered and biodegradable polymers will have more applications in GTR and GBR.
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Affiliation(s)
- Jiaolong Wang
- Department of Prosthodontics, Affiliated Stomatological Hospital of Nanchang University, Nanchang 330006, China.
- College of Chemistry, Nanchang University, Nanchang 330031, China.
| | - Lina Wang
- College of Chemistry, Nanchang University, Nanchang 330031, China.
- College of Science, Nanchang Institute of Technology, Nanchang 330029, China.
| | - Ziyu Zhou
- Department of Prosthodontics, Affiliated Stomatological Hospital of Nanchang University, Nanchang 330006, China.
| | - Hanjian Lai
- College of Chemistry, Nanchang University, Nanchang 330031, China.
| | - Pan Xu
- College of Chemistry, Nanchang University, Nanchang 330031, China.
| | - Lan Liao
- Department of Prosthodontics, Affiliated Stomatological Hospital of Nanchang University, Nanchang 330006, China.
| | - Junchao Wei
- College of Chemistry, Nanchang University, Nanchang 330031, China.
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Mandibular Tissue Engineering: Past, Present, Future. J Oral Maxillofac Surg 2016; 73:S136-46. [PMID: 26608143 DOI: 10.1016/j.joms.2015.05.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 05/27/2015] [Indexed: 12/19/2022]
Abstract
Almost 2 decades ago, the senior author's (M.T.J.) first article was with our mentor, Dr Leonard B. Kaban, a review article titled "Distraction Osteogenesis: Past, Present, Future." In 1998, many thought it would be impossible to have a remotely activated, small, curvilinear distractor that could be placed using endoscopic techniques. Currently, a U.S. patent for a curvilinear automated device and endoscopic techniques for minimally invasive access for jaw reconstruction exist. With minimally invasive access for jaw reconstruction, the burden to decrease donor site morbidity has increased. Distraction osteogenesis (DO) is an in vivo form of tissue engineering. The DO technique eliminates a donor site, is less invasive, requires a shorter operative time than usual procedures, and can be used for multiple reconstruction applications. Tissue engineering could further reduce morbidity and cost and increase treatment availability. The purpose of the present report was to review our experience with tissue engineering of bone: the past, present, and our vision for the future. The present report serves as a tribute to our mentor and acknowledges Dr Kaban for his incessant tutelage, guidance, wisdom, and boundless vision.
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Lee JH, Lee JS, Baek WS, Lim HC, Cha JK, Choi SH, Jung UW. Assessment of dehydrothermally cross-linked collagen membrane for guided bone regeneration around peri-implant dehiscence defects: a randomized single-blinded clinical trial. J Periodontal Implant Sci 2015; 45:229-37. [PMID: 26732806 PMCID: PMC4698950 DOI: 10.5051/jpis.2015.45.6.229] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 12/02/2015] [Indexed: 11/26/2022] Open
Abstract
Purpose The aim of this study was to determine the clinical feasibility of using dehydrothermally cross‐linked collagen membrane (DCM) for bone regeneration around peri-implant dehiscence defects, and compare it with non-cross-linked native collagen membrane (NCM). Methods Dehiscence defects were investigated in twenty-eight patients. Defect width and height were measured by periodontal probe immediately following implant placement (baseline) and 16 weeks afterward. Membrane manipulation and maintenance were clinically assessed by means of the visual analogue scale score at baseline. Changes in horizontal thickness at 1 mm, 2 mm, and 3 mm below the top of the implant platform and the average bone density were assessed by cone-beam computed tomography at 16 weeks. Degradation of membrane was histologically observed in the soft tissue around the implant prior to re-entry surgery. Results Five defect sites (two sites in the NCM group and three sites in the DCM group) showed soft-tissue dehiscence defects and membrane exposure during the early healing period, but there were no symptoms or signs of severe complications during the experimental postoperative period. Significant clinical and radiological improvements were found in all parameters with both types of collagen membrane. Partially resorbed membrane leaflets were only observed histologically in the DCM group. Conclusions These findings suggest that, compared with NCM, DCM has a similar clinical expediency and possesses more stable maintenance properties. Therefore, it could be used effectively in guided bone regeneration around dehiscence-type defects.
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Affiliation(s)
- Jae-Hong Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jung-Seok Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Won-Sun Baek
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Hyun-Chang Lim
- Department of Periodontology, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Jae-Kook Cha
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Ui-Won Jung
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
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Mobini S, Taghizadeh-Jahed M, Khanmohammadi M, Moshiri A, Naderi MM, Heidari-Vala H, Ashrafi Helan J, Khanjani S, Springer A, Akhondi MM, Kazemnejad S. Comparative evaluation of in vivo biocompatibility and biodegradability of regenerated silk scaffolds reinforced with/without natural silk fibers. J Biomater Appl 2015; 30:793-809. [DOI: 10.1177/0885328215601925] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Nowadays, exceptional advantages of silk fibroin over synthetic and natural polymers have impelled the scientists to application of this biomaterial for tissue engineering purposes. Recently, we showed that embedding natural degummed silk fibers in regenerated Bombyx mori silk-based scaffold significantly increases the mechanical stiffness, while the porosity of the scaffolds remains the same. In the present study, we evaluated degradation rate, biocompatibility and regenerative properties of the regenerated 2% and 4% wt silk-based composite scaffolds with or without embedded natural degummed silk fibers within 90 days in both athymic nude and wild-type C57BL/6 mice through subcutaneous implantation. In all scaffolds, a suitable interconnected porous structure for cell penetration was seen under scanning electron microscopy. Compressive tests revealed a functional relationship between fiber reinforcement and compressive modulus. In addition, the fiber/fibroin composite scaffolds support cell attachment and proliferation. On days 30 to 90 after subcutaneous implantation, the retrieved tissues were examined via gross morphology, histopathology, immunofluorescence staining and reverse transcription-polymerase chain reaction as shown in Figure 1 . Results showed that embedding the silk fibers within the matrix enhances the biodegradability of the matrix resulting in replacement of the composite scaffolds with the fresh connective tissue. Fortification of the composites with degummed fibers not only regulates the degradation profile but also increases the mechanical performance of the scaffolds. This report also confirmed that pore size and structure play an important role in the degradation rate. In conclusion, the findings of the present study narrate key role of additional surface area in improving in vitro and in vivo biological properties of the scaffolds and suggest the potential ability of these fabricated composite scaffolds for connective tissue regeneration. [Figure: see text]
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Affiliation(s)
- Sahba Mobini
- Department of Tissue Engineering, Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Masoud Taghizadeh-Jahed
- Department of Tissue Engineering, Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Manijeh Khanmohammadi
- Department of Tissue Engineering, Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Ali Moshiri
- Department of Tissue Engineering, Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Mohammad-Mehdi Naderi
- Department of Tissue Engineering, Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Hamed Heidari-Vala
- Department of Tissue Engineering, Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Javad Ashrafi Helan
- Department of Pathology, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Sayeh Khanjani
- Department of Tissue Engineering, Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Armin Springer
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Medical Faculty of Technische Universität Dresden, Dresden, Germany
| | - Mohammad-Mehdi Akhondi
- Department of Tissue Engineering, Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Somaieh Kazemnejad
- Department of Tissue Engineering, Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
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You H, Lee EU, Kim YK, Kim BC, Park JY, Lim HC, Lee JS, Noh I, Jung UW, Choi SH. Biocompatibility and resorption pattern of newly developed hyaluronic acid hydrogel reinforced three-layer poly (lactide-co-glycolide) membrane: histologic observation in rabbit calvarial defect model. Biomater Res 2014; 18:12. [PMID: 26331063 PMCID: PMC4552410 DOI: 10.1186/2055-7124-18-12] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 08/19/2014] [Indexed: 11/29/2022] Open
Abstract
Background The aim of this study was to evaluate the biocompatibility and resorption pattern in three-layer poly (lactide-co-glycolide) (PLGA) membrane according to the concentrations of hyaluronic acid (HA) hydrogel in rabbit calvarial defect model. Four standardized circular defects with 8 mm diameter were created on the four rabbit calvarium. Three-layer PLGA membranes (5% and 10% HA gel) were used as the test groups, both collagen membrane and monolayer PLGA membrane as the control groups. Results After sacrificing the animals after 4 and 8 weeks, block sections were harvested and histological observation was performed. Pus formation was observed in a site on the three-layer PLGA membranes (with 10% HA gel) of 4 weeks group and initial inflammatory responses were observed on the three-layer PLGA membrane group. However, when compared to both the monolayer PLGA membrane group and collagen membrane group, the HA gel-reinforced three-layer PLGA membrane showed improved cell occlusion and retention period, showing the formation of the capsule-like structure. There was no definite difference between the results of the membranes fabricated with either 5% or 10% HA hydrogel. Conclusion The HA reinforced three-layer PGLA membrane was retained longer than control group and showed good property in cell occlusion. Future study is under process to improve the inflammatory response of the three layer PLGA membranes, which were observed in this study.
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Affiliation(s)
- Hoon You
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, 120-752 Korea
| | - Eun-Ung Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, 120-752 Korea
| | - You-Kyoung Kim
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, 120-752 Korea
| | - Bum-Chul Kim
- Department of Chemical and Biomolecular Engineering, Seoul, 139-743 Korea
| | - Jin-Young Park
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, 120-752 Korea
| | - Hyun-Chang Lim
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, 120-752 Korea
| | - Jung-Seok Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, 120-752 Korea
| | - InSup Noh
- Department of Chemical and Biomolecular Engineering, Seoul, 139-743 Korea ; Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 139-743 Korea
| | - Ui-Won Jung
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, 120-752 Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, 120-752 Korea
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Benic GI, Hämmerle CHF. Horizontal bone augmentation by means of guided bone regeneration. Periodontol 2000 2014; 66:13-40. [DOI: 10.1111/prd.12039] [Citation(s) in RCA: 214] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2013] [Indexed: 12/18/2022]
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Postoperative outcomes of anophthalmic socket reconstruction using an autologous buccal mucosa graft. J Craniofac Surg 2014; 25:1171-4. [PMID: 25006890 DOI: 10.1097/scs.0000000000000807] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Socket contracture is one of the most common and difficult problems in anophthalmic patients. This study intended to evaluate postoperative outcomes of anophthalmic socket reconstruction using an autologous buccal mucosa graft in patients with socket contracture. Medical records and photographs of 44 anophthalmic patients who underwent socket reconstruction surgery using an autologous buccal mucosa graft were reviewed retrospectively. The time necessary for the graft surface to be completely vascularized was assessed, and fornix depth was measured before and 6 months after surgery. Postoperative cosmetic and functional outcomes were evaluated, and the factors that influence postoperative outcomes were investigated. The surgery was performed without any significant complications, and the patients only complained of oral discomfort within 1 week. The graft surface was fully vascularized about 1.1 months after surgery. Mean fornix depth after surgery was significantly deeper than that before surgery (9.1 mm, about 68.2% of the vertical size of the implanted graft). Preoperatively, 50.0% of the patient had cosmetic grades 1 and 2; however, 63.6% of the patients achieved grade 4, and 93.2% had higher than grade 3 after surgery. In functional outcomes, 86.4% of the patients presented functional success. Graft recontracture occurred in only 2 patients. Preoperative severe socket contracture was a factor associated with worse cosmetic outcome (P = 0.001). An autologous buccal mucosa can be a safe and effective graft material for the reconstruction of a contracted socket.
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Kim YK, Yun PY. Risk Factors for Wound Dehiscence after Guided Bone Regeneration in Dental Implant Surgery. Maxillofac Plast Reconstr Surg 2014; 36:116-23. [PMID: 27489821 PMCID: PMC4281900 DOI: 10.14402/jkamprs.2014.36.3.116] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 03/05/2014] [Accepted: 04/30/2014] [Indexed: 11/20/2022] Open
Abstract
Purpose: The purpose of this study was to evaluate risks for wound dehiscence after guided bone regeneration (GBR) in dental implant surgery. Methods: Patients who received dental implant therapy with GBR procedure at Seoul National University Bundang Hospital (Seongnam, Korea) from June 2004 to May 2007 were included. The clinical outcome of interest was complications related to dental implant surgery. The factors influencing wound dehiscence, classified into patient-related factors, surgery-related factors and material-related factors, were evaluated. Results: One hundred and fifteen cases (202 implants) were included in this study. Wound dehiscence (19.1%) was considered a major complication. The risk of wound dehiscence was higher in males than in females (odds ratio=4.279, P =0.014). In the main graft, the allogenic group had the lowest risk of wound dehiscence (odds ratio=0.106, P =0.006). Though the external connection group had a higher risk of wound dehiscence than the internal connection group (odds ratio=2.381), the difference was not significant (P =0.100). Conclusion: In this study, male gender and main graft have the highest risk of wound dehiscence. To reduce wound dehiscence after GBR, instructions on postoperative care with supplementary procedure for the protection of the wound dehiscence is recommended, especially to male patients. A main graft with a gel base can reduce the risk of wound dehiscence.
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Affiliation(s)
- Young-Kyun Kim
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital
| | - Pil-Young Yun
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital
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Liu J, Kerns DG. Mechanisms of guided bone regeneration: a review. Open Dent J 2014; 8:56-65. [PMID: 24894890 PMCID: PMC4040931 DOI: 10.2174/1874210601408010056] [Citation(s) in RCA: 199] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 01/05/2014] [Accepted: 02/12/2014] [Indexed: 01/25/2023] Open
Abstract
Post-extraction crestal bone resorption is common and unavoidable which can lead to significant ridge dimensional changes. To regenerate enough bone for successful implant placement, Guided Bone Regeneration (GBR) is often required. GBR is a surgical procedure that uses barrier membranes with or without particulate bone grafts or/and bone substitutes. There are two approaches of GBR in implant therapy: GBR at implant placement (simultaneous approach) and GBR before implant placement to increase the alveolar ridge or improve ridge morphology (staged approach). Angiogenesis and ample blood supply play a critical role in promoting bone regeneration.
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Affiliation(s)
- Jie Liu
- Department of Periodontics, Baylor College of Dentistry, Texas A&M University, Dallas, TX
| | - David G Kerns
- Department of Periodontics, Baylor College of Dentistry, Texas A&M University, Dallas, TX
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