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Zhang Y, Li Z, Guo H, Wang Q, Guo B, Jiang X, Liu Y, Cui S, Wu Z, Yu M, Zhu L, Chen L, Du N, Luo D, Lin Y, Di P, Liu Y. A Biomimetic Multifunctional Scaffold for Infectious Vertical Bone Augmentation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2310292. [PMID: 38704674 PMCID: PMC11234421 DOI: 10.1002/advs.202310292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 04/04/2024] [Indexed: 05/06/2024]
Abstract
The regenerative treatment of infectious vertical bone defects remains difficult and challenging today. Current clinical treatments are limited in their ability to control bacteria and infection, which is unfavorable for new bone formation and calls for a new type of material with excellent osteogenic and antibacterial properties. Here a multifunctional scaffold is synthesized that mimics natural bone nanostructures by incorporating silver nanowires into a hierarchical, intrafibrillar mineralized collagen matrix (IMC/AgNWs), to achieve the therapeutic goals of inhibiting bacterial activity and promoting infectious alveolar bone augmentation in rats and beagle dogs. An appropriate concentration of 0.5 mg mL-1 AgNWs is selected to balance biocompatibility and antibacterial properties. The achieved IMC/AgNWs exhibit a broad spectrum of antimicrobial properties against Gram-negative Porphyromonas gingivalis and Gram-positive Streptococcus mutans. When the IMC/AgNWs are cocultured with periodontal ligament stem cells, it possesses excellent osteoinductive activities under both non-inflammatory and inflammatory conditions. By constructing a rat mandibular infected periodontal defect model, the IMC/AgNWs achieve a near-complete healing through the canonical BMP/Smad signaling. Moreover, the IMC/AgNWs enhance vertical bone height and osseointegration in peri-implantitis in beagle dogs, indicating the clinical translational potential of IMC/AgNWs for infectious vertical bone augmentation.
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Affiliation(s)
- Yifan Zhang
- Department of Oral ImplantologyNational Center for StomatologyNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital StomatologyTranslational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Zixin Li
- Department of StomatologyPeking University People's HospitalBeijing100044PR China
| | - Houzuo Guo
- Department of Oral ImplantologyNational Center for StomatologyNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital StomatologyTranslational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Qibo Wang
- Department of Oral ImplantologyNational Center for StomatologyNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital StomatologyTranslational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Bowen Guo
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
| | - Xi Jiang
- Department of Oral ImplantologyNational Center for StomatologyNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital StomatologyTranslational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Yishu Liu
- Department of StomatologyBeijing Chao‐Yang Hospital of Capital Medical UniversityBeijing100020China
| | - Shengjie Cui
- Department of General DentistryLaboratory of Biomimetic NanomaterialsPeking University School and Hospital of StomatologyBeijing100081China
| | - Zhengda Wu
- Department of Oral ImplantologyNational Center for StomatologyNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital StomatologyTranslational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Min Yu
- Central LaboratoryDepartment of Orthodontics, National Center for Stomatology,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology,Translational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Lisha Zhu
- Central LaboratoryDepartment of Orthodontics, National Center for Stomatology,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology,Translational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Liyuan Chen
- Central LaboratoryDepartment of Orthodontics, National Center for Stomatology,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology,Translational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Ning Du
- Central LaboratoryDepartment of Orthodontics, National Center for Stomatology,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology,Translational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Dan Luo
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
| | - Ye Lin
- Department of Oral ImplantologyNational Center for StomatologyNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital StomatologyTranslational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Ping Di
- Department of Oral ImplantologyNational Center for StomatologyNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital StomatologyTranslational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
| | - Yan Liu
- Central LaboratoryDepartment of Orthodontics, National Center for Stomatology,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology,Translational Research Center for Oro‐craniofacial Stem Cells and Systemic HealthPeking University School and Hospital of StomatologyBeijing100081China
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Song YW, Park JY, Na JY, Kwon YH, Cha JK, Jung UW, Thoma DS, Jung RE. Does an untreated peri-implant dehiscence defect affect the progression of peri-implantitis?: A preclinical in vivo experimental study. Clin Oral Implants Res 2024. [PMID: 38949573 DOI: 10.1111/clr.14324] [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: 12/01/2023] [Revised: 05/18/2024] [Accepted: 06/18/2024] [Indexed: 07/02/2024]
Abstract
OBJECTIVE To investigate the early impact of plaque accumulation in a buccal dehiscence defect on peri-implant marginal bone resorption. MATERIALS AND METHODS In six male Mongrel dogs, four dental implants were placed in the posterior maxilla on both sides (two implants per side). Based on the group allocation, each implant was randomly assigned to one of the following four groups to decide whether buccal dehiscence defect was prepared and whether silk ligation was applied at 8 weeks post-implant placement for peri-implantitis induction: UC (no defect without ligation); UD (defect without ligation); LC (no defect with ligation); and LD (defect with ligation) groups. Eight weeks after disease induction, the outcomes from radiographic and histologic analyses were statistically analyzed (p < .05). RESULTS Based on radiographs, the exposed area of implant threads was smallest in group UC (p < .0083). Based on histology, both the distances from the implant platform to the first bone-to-implant contact point and to the bone crest were significantly longer in the LD group (p < .0083). In the UD group, some spontaneous bone fill occurred from the base of the defect at 8 weeks after implant placement. The apical extension of inflammatory cell infiltrate was significantly more prominent in the LD and LC groups compared to the UC group (p < .0083). CONCLUSION Plaque accumulated on the exposed implant surface had a negative impact on maintaining the peri-implant marginal bone level, especially when there was a dehiscence defect around the implant.
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Affiliation(s)
- Young Woo Song
- Department of Periodontology, Dental Hospital, Veterans Health Service Medical Center, Seoul, South Korea
| | - Jin-Young Park
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, South Korea
| | - Ji-Yeong Na
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, South Korea
| | - Yoon-Hee Kwon
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, South Korea
| | - Jae-Kook Cha
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, South Korea
| | - Ui-Won Jung
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, South Korea
| | - Daniel S Thoma
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, South Korea
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Ronald E Jung
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
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Boldeanu LC, Popa-Wagner A, Boariu M, Stratul SI, Rusu D, Vela O, Roman A, Surlin P, Kardaras G, Chinnici S, Vaduva A. Influence of Section Thickness on the Accuracy and Specificity of Histometric Parameters Using Confocal Laser Scanning Microscopy in a Canine Model of Experimental Peri-Implantitis-A Proof of Concept. J Clin Med 2023; 12:jcm12072462. [PMID: 37048546 PMCID: PMC10095515 DOI: 10.3390/jcm12072462] [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: 02/14/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 04/14/2023] Open
Abstract
OBJECTIVES Tissue breakdown was assessed by confocal laser scanning microscopy (CLSM) using autofluorescence around implants with ligatures, on a dog hemimandible. Influence of section thickness on the accuracy of histometrical observations was also evaluated, in comparison with thin sections in light microscopy. MATERIAL AND METHODS Three months after tooth extraction, implants were placed. Two months after abutment placement, ligatures were placed with no plaque control. 11 months post-implantation, the animal was sacrificed. Undecalcified thin (30 µm) sections were cut, stained and evaluated by light microscopy to be used as a reference. Additional sections were performed, so that another pair of unstained thick sections resulted (250-300 µm). Tissue loss was assessed using histomorphometric parameters under CLSM and was compared to the light microscopy reference ones. RESULTS Morphometry confirmed tissue loss more pronounced on the "thick" and quick sections, when compared to the time-consuming and technique-sensitive "thin" ones. CONCLUSIONS Within the limits of the present study, the adequacy of histometrical observations under CLSM reveal commensurable information about soft-tissue-bone-implant details, when compared to traditional light microscopy histological protocols. The CLSM investigation may seem demanding, yet the richness of data acquired may justify this approach, provided seatbacks caused by improper manipulation of "thick" sections are avoided.
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Affiliation(s)
- Lucia-Camelia Boldeanu
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Aurel Popa-Wagner
- Department of Neurology, Chair of Vascular Neurology and Dementia, University Hospital Essen, 45147 Essen, Germany
- Center for Experimental and Clinical Medicine, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania
| | - Marius Boariu
- Department of Endodontics, Faculty of Dental Medicine, TADERP Research Center, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Stefan-Ioan Stratul
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Darian Rusu
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Octavia Vela
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Alexandra Roman
- Applicative Periodontal Regeneration Research Unit, Department of Peridontology, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj Napoca, Romania
| | - Petra Surlin
- Department of Periodontology, Faculty of Dental Medicine, University of Medicine and Pharmacy, 200349 Craiova, Romania
| | - Georgios Kardaras
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Salvatore Chinnici
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Adrian Vaduva
- Department of Pathology, Faculty of Medicine, ANAPATMOL Research Center, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
- County Emergency Hospital, L. Rebreanu Street, nr. 156, 300723 Timisoara, Romania
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Solderer A, de Boer M, Wiedemeier DB, Solderer M, Liu CC, Schmidlin PR. Bone defect development in experimental canine peri-implantitis models: a systematic review. Syst Rev 2022; 11:202. [PMID: 36131319 PMCID: PMC9494778 DOI: 10.1186/s13643-022-02075-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 09/12/2022] [Indexed: 11/10/2022] Open
Abstract
PURPOSE To provide a systematic overview of preclinical research regarding bone defect formation around different implant surfaces after ligature-induced peri-implantitis models in dogs. Two focused questions were formulated: 'How much bone loss can be expected after a certain time of ligature induced peri-implantitis?' and 'Do different implant types, dog breeds and study protocols differ in their extent of bone loss?' MATERIALS AND METHODS A systematic literature search was conducted on four databases (MEDLINE, Web of Science, EMBASE and Scopus). Observations, which consisted of bone defects measured directly after ligature removal in canine models, were included and analysed. Two approaches were used to analyse the relatively heterogeneous studies that fulfilled the inclusion criteria. First, separate simple linear regressions were calculated for each study and implant surface, for which observations were available across multiple time points. Second, a linear mixed model was specified for the observations at 12 weeks after ligature initiation, and assessing the potential influencing factors on defect depth was explored using lasso regularisation. RESULTS Thirty-six studies with a total of 1082 implants were included after. Bone loss was determined at different time points, either with clinical measurements radiographically or histologically. Different implant groups [e.g. turned, sand-blasted-acid-etched (SLA), titanium-plasma-sprayed (TPS) and other rough surfaces] were assessed and described in the studies. A mean incremental defect depth increase of 0.08 mm (SD: -0.01-0.28 mm) per week was observed. After 12 weeks, the defect depths ranged between 0.7 and 5 mm. Based on the current data set, implant surface could not be statistically identified as an essential factor in defect depth after 12 weeks of ligature-induced peri-implantitis. CONCLUSION Expectable defect depth after a specific time of ligature-induced peri-implantitis can vary robustly. It is currently impossible to delineate apparent differences in bone loss around different implant surfaces.
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Affiliation(s)
- A Solderer
- Clinic of Conservative and Preventive Dentistry, Division of Periodontology and Peri-implant Diseases, Center of Dental Medicine, University of Zurich, 8032, Zurich, Switzerland. .,Private Practice, 39100, Bolzano, Italy.
| | - M de Boer
- Clinic of Conservative and Preventive Dentistry, Division of Periodontology and Peri-implant Diseases, Center of Dental Medicine, University of Zurich, 8032, Zurich, Switzerland
| | - D B Wiedemeier
- Statistical Services, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | | | - C C Liu
- Clinic of Conservative and Preventive Dentistry, Division of Periodontology and Peri-implant Diseases, Center of Dental Medicine, University of Zurich, 8032, Zurich, Switzerland
| | - P R Schmidlin
- Clinic of Conservative and Preventive Dentistry, Division of Periodontology and Peri-implant Diseases, Center of Dental Medicine, University of Zurich, 8032, Zurich, Switzerland
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Xu L, Qin X, Mozaffari MS, Yan D, Sun X, Cao Y. Hybrid system with stable structure of hard/soft tissue substitutes induces re-osseointegration in a rat model of biofilm-mediated peri-implantitis. J Biomed Mater Res B Appl Biomater 2022; 110:2452-2463. [PMID: 35620882 DOI: 10.1002/jbm.b.35102] [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: 12/03/2021] [Revised: 03/19/2022] [Accepted: 05/09/2022] [Indexed: 11/07/2022]
Abstract
Re-osseointegration of an infected/contaminated dental implant poses major clinical challenges. We tested the hypothesis that the application of an antibiotic-releasing construct, combined with hard/soft tissue replacement, increases the efficacy of reconstructive therapy. We initially fabricated semi-flexible hybrid constructs of β-TCP/PHBHHx, with tetracycline (TC) (TC amounts: 5%, 10%, and 15%). Thereafter, using in vitro assays, TC release profile, attachment to rat bone marrow-derived stem cells (rBMSCs) and their viability as well as anti-bacterial activity were determined. Thereafter, regenerative efficacies of the three hybrid constructs were assessed in a rat model of peri-implantitis induced by Aggregatibacter actinomycetemcomitans biofilm; control animals received β-TCP/Bio-Gide and TC injection. Eight weeks later, maxillae were obtained for radiological, histological, and histomorphometric analyses of peri-implant tissues. Sulcus bleeding index was chronologically recorded. Serum cytokines levels of IL-6 and IL-1β were also evaluated by enzyme-linked immunosorbent assay. Substantial amounts of tetracycline, from hybrid constructs, were released for 2 weeks. The medium containing the released tetracycline did not affect the adhesion or viability of rBMSCs; however, it inhibited the proliferation of A. actinomycetemcomitans. Osteogenesis and osseointegration were more marked for the 15% hybrid construct group than the other two groups. The height of attachment and infiltration of inflammatory cells within fibrous tissue was significantly reduced in the experimental groups than the control group. Our protocol resulted in re-osseointegration on a biofilm-contaminated implant. Thus, an antibiotic releasing inorganic/organic construct may offer a therapeutic option to suppress infection and promote guided tissue regeneration thereby serving as an integrated multi-layer substitute for both hard/soft tissues.
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Affiliation(s)
- Lianyi Xu
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xu Qin
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mahmood S Mozaffari
- Department of Oral Biology, Dental College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Di Yan
- Department of Oral and Maxillofacial Surgery, General Hospital, Ningxia Medical University, Yinchuan, China
| | - Xiaojuan Sun
- Department of Oral and Maxillofacial Surgery, General Hospital, Ningxia Medical University, Yinchuan, China
| | - Yingguang Cao
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Blanc-Sylvestre N, Bouchard P, Chaussain C, Bardet C. Pre-Clinical Models in Implant Dentistry: Past, Present, Future. Biomedicines 2021; 9:1538. [PMID: 34829765 PMCID: PMC8615291 DOI: 10.3390/biomedicines9111538] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/11/2021] [Accepted: 10/15/2021] [Indexed: 12/23/2022] Open
Abstract
Biomedical research seeks to generate experimental results for translation to clinical settings. In order to improve the transition from bench to bedside, researchers must draw justifiable conclusions based on data from an appropriate model. Animal testing, as a prerequisite to human clinical exposure, is performed in a range of species, from laboratory mice to larger animals (such as dogs or non-human primates). Minipigs appear to be the animal of choice for studying bone surgery around intraoral dental implants. Dog models, well-known in the field of dental implant research, tend now to be used for studies conducted under compromised oral conditions (biofilm). Regarding small animal models, research studies mostly use rodents, with interest in rabbit models declining. Mouse models remain a reference for genetic studies. On the other hand, over the last decade, scientific advances and government guidelines have led to the replacement, reduction, and refinement of the use of all animal models in dental implant research. In new development strategies, some in vivo experiments are being progressively replaced by in vitro or biomaterial approaches. In this review, we summarize the key information on the animal models currently available for dental implant research and highlight (i) the pros and cons of each type, (ii) new levels of decisional procedures regarding study objectives, and (iii) the outlook for animal research, discussing possible non-animal options.
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Affiliation(s)
- Nicolas Blanc-Sylvestre
- Université de Paris, Institut des Maladies Musculo-Squelettiques, Orofacial Pathologies, Imaging and Biotherapies Laboratory URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), 92120 Montrouge, France; (N.B.-S.); (P.B.); (C.C.)
- AP-HP, Department of Periodontology, Rothschild Hospital, European Postgraduate in Periodontology and Implantology, Université de Paris, 75012 Paris, France
| | - Philippe Bouchard
- Université de Paris, Institut des Maladies Musculo-Squelettiques, Orofacial Pathologies, Imaging and Biotherapies Laboratory URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), 92120 Montrouge, France; (N.B.-S.); (P.B.); (C.C.)
- AP-HP, Department of Periodontology, Rothschild Hospital, European Postgraduate in Periodontology and Implantology, Université de Paris, 75012 Paris, France
| | - Catherine Chaussain
- Université de Paris, Institut des Maladies Musculo-Squelettiques, Orofacial Pathologies, Imaging and Biotherapies Laboratory URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), 92120 Montrouge, France; (N.B.-S.); (P.B.); (C.C.)
- AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Dental Medicine Department, Bretonneau Hospital, GHN-Université de Paris, 75018 Paris, France
| | - Claire Bardet
- Université de Paris, Institut des Maladies Musculo-Squelettiques, Orofacial Pathologies, Imaging and Biotherapies Laboratory URP2496 and FHU-DDS-Net, Dental School, and Plateforme d’Imagerie du Vivant (PIV), 92120 Montrouge, France; (N.B.-S.); (P.B.); (C.C.)
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Park SY, Kim KH, Kim S, Rhee SH, Yeo IS, Heo SJ, Lee YM, Seol YJ. Comparison of experimental peri-implantitis models after application of ex vivo BMP2 gene therapy using periodontal ligament stem cells. Sci Rep 2020; 10:3590. [PMID: 32108172 PMCID: PMC7046768 DOI: 10.1038/s41598-020-60341-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 02/11/2020] [Indexed: 11/21/2022] Open
Abstract
Peri-implantitis is an inflammatory disease that results in bone destruction around dental implants. A preclinical study using beagle models is frequently performed prior to clinical application in dentistry. Previously, we proposed an immediate peri-implantitis experimental model with a shorter experimental duration and less expense than the conventional experimental model. However, the differences in the regenerative outcomes between the immediate and conventional models were not fully revealed. In this study, we aimed to compare the regenerative outcomes between both models when ex vivo BMP2 gene therapy using autologous periodontal ligament stem cells (B2/PDLSCs) was applied to peri-implantitis defects. The results showed that the defect depths were significantly different between both models. New bone formation occurred in both models, but there were significant differences between the models. More than 70% of the defects were filled with newly formed bone in the conventional model, whereas 30-40% of the defects were filled in the immediate model. However, after adjustment for the differences in the defect depths between the models, the statistically significant differences in the regenerative outcomes between the models were lost. In conclusion, the inferior regenerative outcome of an immediate peri-implantitis model at B2/PDLSCs transplantation resulted from the defect depths, not the model itself.
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Affiliation(s)
- Shin-Young Park
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Korea
- Department of Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Korea
| | - Kyoung-Hwa Kim
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Korea
| | - Sungtae Kim
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Korea
| | - Sang-Hoon Rhee
- Department of Dental Biomaterials Science, School of Dentistry, Seoul National University, Seoul, 03080, Korea
| | - In-Sung Yeo
- Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Korea
| | - Seong-Joo Heo
- Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Korea
| | - Yong-Moo Lee
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Korea
| | - Yang-Jo Seol
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Korea.
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Bone Remineralization around Dental Implants following Conservative Treatment after Peri-Implantitis. Case Rep Dent 2019; 2019:7210837. [PMID: 31583138 PMCID: PMC6748190 DOI: 10.1155/2019/7210837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/08/2019] [Indexed: 11/17/2022] Open
Abstract
The aim of this case report is to show that bone remineralization around dental implants with a history of peri-implantitis is possible after irritant factors are removed and only conservative treatment is performed. Patient came to the clinic after three years of dental implant placement complaining about swelling, sensitivity and gingiva color changes at the posterior part of the maxilla. During radiographic and intraoral examinations peri-implantitis of the #24 implant site was diagnosed. The surgical treatment method was rejected and performed conservative treatment instead. The outcome is promising; periapical radiographs three months later showed bone remineralization as well as stable bone after 10 years. A key clinical message: Bone remineralization around dental implants with a history of peri-implantitis is possible after irritant factors are removed and conservative treatment performed.
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Huang B, Piao M, Zhang L, Wang X, Xu L, Zhu W, Meng H. Ligature-induced peri-implant infection in crestal and subcrestal implants: a clinical and radiographic study in dogs. PeerJ 2015; 3:e1139. [PMID: 26246975 PMCID: PMC4525689 DOI: 10.7717/peerj.1139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 07/07/2015] [Indexed: 11/20/2022] Open
Abstract
Objective. The aim of this study was to assess the influence of implant–abutment interface (IAI) placement depths on peri-implant tissues in the presence of ligature-induced peri-implant inflammation. Materials and Methods. Two implants with screwed-in IAIs (SI) and two implants with tapped-in IAIs (TI) were inserted in one side of the mandible in six dogs eight weeks after tooth extraction. Four experimental groups were constituted: SI placed crestally, SI placed 1.5 mm subcrestally, TI placed crestally and TI placed 1.5 mm subcrestally. After 12 weeks, the healing abutments were connected. Four weeks later, cotton floss ligatures were placed around the abutments to promote plaque accumulation. Clinical and radiographic examinations were performed at 0, 6 and 12 weeks after ligature placement. The effects of the IAI placement depths on clinical and radiographic parameters were assessed. Results. The alterations of peri-implant probing depths, clinical attachment levels, distances from the IAI to the first bone-implant contact (IAI-fBIC) and depths of infrabony defect were significant larger in the subcrestal groups compared with the crestal groups during the plaque accumulation period. The alterations of clinical attachment levels, IAI-fBIC, depth of the infrabony defect and horizontal bone loss were not significantly different between the SI and TI groups after ligature placement. Conclusion. Tissue destruction in subcrestal implants may be more serious than that in crestal implants in the presence of inflamed peri-implant mucosa.
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Affiliation(s)
- Baoxin Huang
- Department of Oral Implantology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University , Guangzhou , China ; Guangdong Provincial Key Laboratory of Stomatology , Guangzhou , China ; Department of Periodontology, Peking University School and Hospital of Stomatology , Beijing , China
| | - Muzi Piao
- Department of Periodontology, Peking University School and Hospital of Stomatology , Beijing , China ; The Second Dental Center, Peking University School and Hospital of Stomatology , Beijing , China
| | - Li Zhang
- Department of Periodontology, Peking University School and Hospital of Stomatology , Beijing , China
| | - Xian'e Wang
- Department of Periodontology, Peking University School and Hospital of Stomatology , Beijing , China
| | - Li Xu
- Department of Periodontology, Peking University School and Hospital of Stomatology , Beijing , China
| | - Weidong Zhu
- Department of Periodontology, Peking University School and Hospital of Stomatology , Beijing , China
| | - Huanxin Meng
- Department of Periodontology, Peking University School and Hospital of Stomatology , Beijing , China
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