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Dang AT, Ono M, Wang Z, Tosa I, Hara ES, Mikai A, Kitagawa W, Yonezawa T, Kuboki T, Oohashi T. Local E-rhBMP-2/β-TCP Application Rescues Osteocyte Dendritic Integrity and Reduces Microstructural Damage in Alveolar Bone Post-Extraction in MRONJ-like Mouse Model. Int J Mol Sci 2024; 25:6648. [PMID: 38928355 PMCID: PMC11203997 DOI: 10.3390/ijms25126648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/27/2024] [Accepted: 05/30/2024] [Indexed: 06/28/2024] Open
Abstract
The pathology of medication-related osteonecrosis of the jaw (MRONJ), often associated with antiresorptive therapy, is still not fully understood. Osteocyte networks are known to play a critical role in maintaining bone homeostasis and repair, but the exact condition of these networks in MRONJ is unknown. On the other hand, the local application of E-coli-derived Recombinant Human Bone Morphogenetic Protein 2/β-Tricalcium phosphate (E-rhBMP-2/β-TCP) has been shown to promote bone regeneration and mitigate osteonecrosis in MRONJ-like mouse models, indicating its potential therapeutic application for the treatment of MRONJ. However, the detailed effect of BMP-2 treatment on restoring bone integrity, including its osteocyte network, in an MRONJ condition remains unclear. Therefore, in the present study, by applying a scanning electron microscope (SEM) analysis and a 3D osteocyte network reconstruction workflow on the alveolar bone surrounding the tooth extraction socket of an MRONJ-like mouse model, we examined the effectiveness of BMP-2/β-TCP therapy on the alleviation of MRONJ-related bone necrosis with a particular focus on the osteocyte network and alveolar bone microstructure (microcrack accumulation). The 3D osteocyte dendritic analysis showed a significant decrease in osteocyte dendritic parameters along with a delay in bone remodeling in the MRONJ group compared to the healthy counterpart. The SEM analysis also revealed a notable increase in the number of microcracks in the alveolar bone surface in the MRONJ group compared to the healthy group. In contrast, all of those parameters were restored in the E-rhBMP-2/β-TCP-treated group to levels that were almost similar to those in the healthy group. In summary, our study reveals that MRONJ induces osteocyte network degradation and microcrack accumulation, while application of E-rhBMP-2/β-TCP can restore a compromised osteocyte network and abrogate microcrack accumulation in MRONJ.
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Affiliation(s)
- Anh Tuan Dang
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Japan; (I.T.); (T.K.)
| | - Mitsuaki Ono
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
- Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 700-8558, Japan
| | - Ziyi Wang
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
| | - Ikue Tosa
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Japan; (I.T.); (T.K.)
- Cartilage Biology and Regenerative Medicine Laboratory, Section of Growth and Development, Division of Orthodontics, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Emilio Satoshi Hara
- Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan;
| | - Akihiro Mikai
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
| | - Wakana Kitagawa
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Japan; (I.T.); (T.K.)
| | - Tomoko Yonezawa
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
| | - Takuo Kuboki
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Japan; (I.T.); (T.K.)
- Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 700-8558, Japan
| | - Toshitaka Oohashi
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
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Yoon Y, Kang I, Noh G, Kwon YD. Biomechanical analysis of alveolar bones with compromised quality supporting a 4-unit implant bridge; a possible association with implant-related sequestration (IRS). Clin Oral Investig 2024; 28:197. [PMID: 38448748 DOI: 10.1007/s00784-024-05589-3] [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: 12/21/2023] [Accepted: 02/25/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVES This study aimed to investigate the strain in the bone surrounding dental implants supporting a 4-unit bridge and assess the role of excessive strain as a possible risk factor for implant related sequestration (IRS) or peri-implant medication-related osteonecrosis of the jaw (PI-MRONJ). MATERIALS AND METHODS A 3D-mandibular model was constructed using computed tomography and segmented it into cortical and cancellous bones. The 4-unit implant-supported bridges replacing the mandibular posteriors were constructed, and each featuring two, three, and four implants, respectively. The Young's modulus was assigned based on the quality of the bone. A maximum occlusal force of 200 N was applied to each implant in the axial and in a 30-degree oblique direction. RESULTS The maximum principal strain of the fatigue failure range (> 3000 µε) in the bone was analyzed. The volume fraction of fatigue failure was higher in poor-quality bone compared to normal bone and oblique load than in axial load. An increasing number of implants may dissipate excessive strain in poor-quality bones. CONCLUSIONS Occlusal force applied to poor-quality bone can result in microdamage. Given that unrepaired microdamage may initiate medication-related osteonecrosis of the jaw, long-term occlusal force on fragile bones might be a risk factor. CLINICAL RELEVANCE When planning implant treatment for patients with compromised bone status, clinical modifications such as strategic placement of implants and optimization of restoration morphology should be considered to reduce excessive strain which might be associated with IRS or PI-MRONJ.
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Affiliation(s)
- Youngjae Yoon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Inyeong Kang
- School of Mechanical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Gunwoo Noh
- School of Mechanical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Yong-Dae Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
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Jiang A, Zhang Z, Qiu X, Guo Q. Medication-related osteonecrosis of the jaw (MRONJ): a review of pathogenesis hypothesis and therapy strategies. Arch Toxicol 2024; 98:689-708. [PMID: 38155341 DOI: 10.1007/s00204-023-03653-7] [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: 11/04/2023] [Accepted: 11/22/2023] [Indexed: 12/30/2023]
Abstract
Medication-related osteonecrosis of the jaw (MRONJ), a severe side effect caused by antiresorptive antiangiogenic medication, particularly bisphosphonates (BPs), has become a challenging disease with serious and profound effects on the physical and mental health of patients. Although it occurs with high frequency and is harmful, the exact mechanism of MRONJ remains unknown, and systematic and targeted approaches are still lacking. Maxillofacial surgeons focus on the etiology of osteonecrosis in the mandible and maxilla as well as the appropriate oral interventions for high-risk patients. Adequate nursing care and pharmacotherapy management are also crucial. This review provides a current overview of the clinicopathologic feature and research of MRONJ caused by BPs, with an emphasis on the potential mechanisms and current therapy and prevention strategies of the disease. We are of the opinion that an in-depth comprehension of the mechanisms underlying MRONJ will facilitate the development of more precise and efficacious therapeutic approaches, resulting in enhanced clinical outcomes for patients.
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Affiliation(s)
- Aiming Jiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, No. 14, Section 3, South Renmin Road, Chengdu, China
| | - Zhuoyuan Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, No. 14, Section 3, South Renmin Road, Chengdu, China
- Department of Head and Neck Cancer Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xutong Qiu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, No. 14, Section 3, South Renmin Road, Chengdu, China.
- Department of Head and Neck Cancer Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
| | - Qiang Guo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, No. 14, Section 3, South Renmin Road, Chengdu, China.
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Coropciuc R, Moreno-Rabié C, De Vos W, Van de Casteele E, Marks L, Lenaerts V, Coppejans E, Lenssen O, Coopman R, Walschap J, Nadjmi N, Jacobs R, Politis C, Van den Wyngaert T. Navigating the complexities and controversies of medication-related osteonecrosis of the jaw (MRONJ): a critical update and consensus statement. Acta Chir Belg 2024; 124:1-11. [PMID: 38059301 DOI: 10.1080/00015458.2023.2291295] [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: 10/24/2023] [Accepted: 11/29/2023] [Indexed: 12/08/2023]
Abstract
OBJECTIVES To provide a critical update identifying the knowledge gaps and controversies in medication-related osteonecrosis of the jaw (MRONJ) within the Belgian healthcare context and outline opportunities for improvement and research in these areas. METHODS A literature review was performed to identify guidelines from international clinical societies in oncology or oral and maxillofacial surgery on diagnosing, preventing, and treating MRONJ. The recommendations were critically assessed in light of recent developments in the field and confronted with the clinical experience of experts. RESULTS Despite progress in the diagnostic criteria of MRONJ, the continued need for an 8-week timeout period should be reconsidered. Furthermore, 3D imaging techniques should be introduced to improve diagnosis and staging. The staging system remains ambiguous regarding Stage 0 MRONJ, and ongoing confusion exists regarding the term non-exposed MRONJ. The prevention of MRONJ should be tailored, considering the individual patient's risk of MRONJ, frailty, and life expectancy. More research seems needed into the efficacy and safety of drug holidays, considering the risks of rebound remodeling on fractures. With renewed interest in surgical and adjunct management techniques, adequately designed clinical studies are needed to help translate trial outcomes into universally applicable treatment guidelines taking into account individual patient characteristics. CONCLUSIONS Important knowledge gaps remain and hamper the development of clinical guidelines. Several controversies were identified where consensus is lacking, and further harmonization between stakeholders is necessary. Finally, the need for randomized controlled comparative clinical trials in MRONJ resonates harder than ever to identify the best treatment for individual patients.
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Affiliation(s)
- Ruxandra Coropciuc
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Catalina Moreno-Rabié
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
- Department of Imaging and Pathology, OMFS-IMPATH Research Group, Faculty of Medicine, University of Leuven, Leuven, Belgium
| | - Wouter De Vos
- Department of Oral and Maxillofacial Surgery, Antwerp University Hospital, Antwerp, Belgium
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Elke Van de Casteele
- Department of Oral and Maxillofacial Surgery, Antwerp University Hospital, Antwerp, Belgium
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Luc Marks
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Special Care Dentistry, Antwerp University Hospital, Antwerp, Belgium
| | - Vincent Lenaerts
- Department of Oral and Maxillofacial Surgery, VITAZ, Sint-Niklaas, Belgium
| | - Evy Coppejans
- Department of Oral and Maxillofacial Surgery, VITAZ, Sint-Niklaas, Belgium
| | - Olivier Lenssen
- Department of Oral and Maxillofacial Surgery, ZNA Middelheim, Antwerpen, Belgium
| | - Renaat Coopman
- Department of Oral and Maxillofacial and Plastic Surgery, University Hospital of Ghent, Ghent, Belgium
| | | | - Nasser Nadjmi
- Department of Oral and Maxillofacial Surgery, Antwerp University Hospital, Antwerp, Belgium
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Reinhilde Jacobs
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
- Department of Imaging and Pathology, OMFS-IMPATH Research Group, Faculty of Medicine, University of Leuven, Leuven, Belgium
- Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Constantinus Politis
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Tim Van den Wyngaert
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Department of Nuclear Medicine, Antwerp University Hospital, Edegem, Belgium
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Quintão Manhanini Souza E, Felipe Toro L, Franzão Ganzaroli V, de Oliveira Alvarenga Freire J, Matsumoto MA, Casatti CA, Tavares Ângelo Cintra L, Leone Buchaim R, Mardegan Issa JP, Gouveia Garcia V, Theodoro LH, Ervolino E. Peri-implantitis increases the risk of medication-related osteonecrosis of the jaws associated with osseointegrated implants in rats treated with zoledronate. Sci Rep 2024; 14:627. [PMID: 38182598 PMCID: PMC10770413 DOI: 10.1038/s41598-023-49647-4] [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: 07/30/2023] [Accepted: 12/11/2023] [Indexed: 01/07/2024] Open
Abstract
This study evaluated the peri-implant tissues under normal conditions and under the influence of experimental peri-implantitis (EPI) in osseointegrated implants installed in the maxillae of rats treated with oncologic dosage of zoledronate. Twenty-eight senescent female rats underwent the extraction of the upper incisor and placement of a titanium dental implant (DI). After eight weeks was installated a transmucosal healing screw on DI. After nine weeks, the following groups were formed: VEH, ZOL, VEH-EPI and ZOL-EPI. From the 9th until the 19th, VEH and VEH-EPI groups received vehicle and ZOL and ZOL-EPI groups received zoledronate. At the 14th week, a cotton ligature was installed around the DI in VEH-EPI and ZOL-EPI groups to induce the EPI. At the 19th week, euthanasia was performed, and the maxillae were processed so that at the implanted sites were analyzed: histological aspects and the percentage of total bone tissue (PTBT) and non-vital bone tissue (PNVBT), along with TNFα, IL-1β, VEGF, OCN and TRAP immunolabeling. ZOL group presented mild persistent peri-implant inflammation, higher PNVBT and TNFα and IL-1β immunolabeling, but lower for VEGF, OCN and TRAP in comparison with VEH group. ZOL-EPI group exhibited exuberant peri-implant inflammation, higher PNVBT and TNFα and IL-1β immunolabeling when compared with ZOL and VEH-EPI groups. Zoledronate disrupted peri-implant environment, causing mild persistent inflammation and increasing the quantity of non-vital bone tissue. Besides, associated with the EPI there were an exacerbated inflammation and even greater increase in the quantity of non-vital bone around the DI, which makes this condition a risk factor for medication-related osteonecrosis of the jaws.
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Affiliation(s)
| | - Luan Felipe Toro
- Department of Basic Sciences, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
- Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | - Vinícius Franzão Ganzaroli
- Department of Diagnostic and Surgery, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Jéssica de Oliveira Alvarenga Freire
- Department of Basic Sciences, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
- Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | - Mariza Akemi Matsumoto
- Department of Basic Sciences, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Cláudio Aparecido Casatti
- Department of Basic Sciences, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | | | - Rogério Leone Buchaim
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo (USP), Bauru, SP, Brazil
| | - João Paulo Mardegan Issa
- Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Valdir Gouveia Garcia
- Latin American Institute of Dental Research and Education (ILAPEO), Curitiba, PR, Brazil
| | - Leticia Helena Theodoro
- Department of Diagnostic and Surgery, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Edilson Ervolino
- Department of Basic Sciences, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil.
- Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil.
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Koizumi G, Hayashi A, Takigawa A, Yamada R, Murata T, Shimizu K, Watanabe M, Arai N. Novel Histopathological Findings of Micro Bone Fragments and Epithelial Response in the Oral Mucosa in Bisphosphonate-Related Osteonecrosis of the Jaw. J Investig Med High Impact Case Rep 2024; 12:23247096241258076. [PMID: 38818904 PMCID: PMC11143842 DOI: 10.1177/23247096241258076] [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: 02/21/2024] [Revised: 04/22/2024] [Accepted: 05/11/2024] [Indexed: 06/01/2024] Open
Abstract
Bisphosphonate-related osteonecrosis of the jaw (BRONJ) occurs in the jawbone and interfacing oral mucosa of patients treated with bisphosphonates. Herein, we report novel histopathological findings in the oral mucosa of a surgical specimen obtained from a 61-year-old man with BRONJ. The resected jawbone and adjacent oral mucosa were separated for histological examination. The mucosal tissue was examined using Von Kossa staining and immunohistochemical (CK5/6, p63) staining of non-decalcified paraffin sections. Pseudoepitheliomatous hyperplasia (PEH), a microscopic feature of the mucosal epithelium in BRONJ, was observed in soft tissue specimens, concomitant with inflammatory cell infiltration. Von Kossa staining revealed small fragments of necrotic bone, tens to hundreds of micrometers in size, scattered within the connective tissues; the PEH forefront contacted some of the bone fragments. Immunohistochemical staining demonstrated that occasionally, the PEH not only contacted but also encompassed the bone fragments. To our knowledge, this is the first report of presence of micro bone fragments and their association with PEH in the oral mucosa in BRONJ.
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Affiliation(s)
- Gaku Koizumi
- Department of Oral and Maxillofacial Surgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Akinobu Hayashi
- Department of Oncologic Pathology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Akira Takigawa
- Department of Oral and Maxillofacial Surgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Rina Yamada
- Department of Oral and Maxillofacial Surgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Taku Murata
- Department of Oral and Maxillofacial Surgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Kasumi Shimizu
- Department of Oral and Maxillofacial Surgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masatoshi Watanabe
- Department of Oncologic Pathology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Naoya Arai
- Department of Oral and Maxillofacial Surgery, Mie University Graduate School of Medicine, Tsu, Japan
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Ha JY, Eo MY, Sodnom-Ish B, Mustakim KR, Myoung H, Kim SM. Electron microscopic analysis of necrotic bone and failed implant surface in a patient with medication-related osteonecrosis of the jaw. Maxillofac Plast Reconstr Surg 2023; 45:34. [PMID: 37789223 PMCID: PMC10547673 DOI: 10.1186/s40902-023-00402-9] [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: 07/02/2023] [Accepted: 09/17/2023] [Indexed: 10/05/2023] Open
Abstract
BACKGROUND Bisphosphonates (BP), a commonly used medication for various bone diseases, have been known to have severe complications such as bisphosphonate-related osteonecrosis of the jaw (BRONJ). Failure of dental implants has also been found in patients with medication-related osteonecrosis of the jaw (MRONJ). In this study, we analyzed the necrotic bone tissues and the surface of the failed implants removed from the jaw in patients treated with BPs and antiresorptive agents. RESULTS Chronic inflammatory cells with collagen and fibrous tissues and bone sequestrum were shown at 5.0 × , 10.0 × , 20.0 × , and 40.0 × magnified histologic sections in the bone and fibrotic scar tissues removed from patients with MRONJ due to osteonecrosis. Hardened bone tissues with microcracked bony resorbed lacunae were observed in SEM. Unlike the previously published comparative data where immune cells, such as dendritic cells, were found in the failed implant surface, these immune cells were not identified in the BRONJ-related peri-implantitis tissues through the TEM investigations. Furthermore, EDS revealed that in addition to the main titanium element, gold, carbon, oxygen, calcium, phosphorus, silicon, and sulfur elements were found. CONCLUSION Hardened bone tissues with microcracked bony resorbed lacunae were observed in the SEM findings, which were considered as the main characteristic of the osteonecrosis of the jaw. Immune cells, such as dendritic cells were not identified in the TEM. EDS showed that in addition to the main titanium element, gold, carbon, oxygen, calcium, phosphorus, and silicon elements were found. Furthermore, it was revealed that sulfur was found, which was considered to be one of the complicated causes of implant failure in patients with BRONJ.
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Affiliation(s)
- Ji Young Ha
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Mi Young Eo
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Buyanbileg Sodnom-Ish
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Kezia Rachellea Mustakim
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Hoon Myoung
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Soung Min Kim
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea.
- Oral and Maxillofacial Microvascular Reconstruction Lab, Brong Ahafo Regional Hospital, Ghana Health Service, P.O. Box 27, Sunyani, Brong Ahafo, Ghana.
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Clinical, CT profile of wistar rats receiving therapeutic doses of alendronate alone and in combination with cyclophosphamide and dexamethasone. ADVANCES IN ORAL AND MAXILLOFACIAL SURGERY 2022. [DOI: 10.1016/j.adoms.2022.100314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Kim JW, Kwak MK, Han JJ, Lee ST, Kim HY, Kim SH, Jung J, Lee JK, Lee YK, Kwon YD, Kim DY. Medication Related Osteonecrosis of the Jaw: 2021 Position Statement of the Korean Society for Bone and Mineral Research and the Korean Association of Oral and Maxillofacial Surgeons. J Bone Metab 2021; 28:279-296. [PMID: 34905675 PMCID: PMC8671025 DOI: 10.11005/jbm.2021.28.4.279] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 11/15/2021] [Indexed: 12/27/2022] Open
Abstract
Antiresorptives are the most widely prescribed drugs for the treatment of osteoporosis. They are also used in malignant bone metastases, multiple myeloma, and Paget's disease, and provide therapeutic efficacy on those diseases. However, it was reported that the occurrence of osteonecrosis of the jaw (ONJ) could be related to antiresorptive exposures, and there have been many cases regarding this issue. Therefore, a clearer definition and treatment guidelines were needed for this disease. The American Society for Bone and Mineral Research and the Amnerican Association of Oral and Maxillofacial Surgeons reported statements on bisphosphonate-related ONJ (BRONJ), and a revised version was recently presented. In the revised edition, the diagnosis BRONJ was changed to medication-related ONJ (MRONJ), which reflects consideration of the fact that ONJ also occurs for denosumab, a bone resorption inhibitor of the receptor activator of the nuclear factor-κB ligand antibody family, and bevacizumab, an anti-angiogenesis inhibitor. The Korean Society for Bone and Mineral Research and the Korean Association of Oral and Maxillofacial Surgeons had collectively formed a task force for the preparation of an official statement on MRONJ based on a previous position paper in 2015. The task force reviewed current knowledge and coordinated dental and medical opinions to propose the guideline customized for the local Korean situation.
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Affiliation(s)
- Jin-Woo Kim
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Mi Kyung Kwak
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
| | - Sung-Tak Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Ha Young Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Se Hwa Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea
| | - Junho Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Jeong Keun Lee
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Science, Ajou University Dental Hospital, Ajou University School of Medicine, Suwon, Korea
| | - Young-Kyun Lee
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Yong-Dae Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Deog-Yoon Kim
- Department of Nuclear Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea
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10
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Aguirre JI, Castillo EJ, Kimmel DB. Preclinical models of medication-related osteonecrosis of the jaw (MRONJ). Bone 2021; 153:116184. [PMID: 34520898 PMCID: PMC8743993 DOI: 10.1016/j.bone.2021.116184] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 08/15/2021] [Accepted: 09/07/2021] [Indexed: 01/20/2023]
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is a potentially severe adverse event affecting patients with cancer and patients with osteoporosis who have been treated with powerful antiresorptives (pARs) or angiogenesis inhibitors (AgIs). pARs, including nitrogen-containing bisphosphonates (N-BPs; e.g., zoledronic acid, alendronate) and anti-RANKL antibodies (e.g., denosumab), are used to manage bone metastases in patients with cancer or to prevent fragility fractures in patients with osteoporosis. Though significant advances have been made in understanding MRONJ, its pathophysiology is still not fully elucidated. Multiple species have been used in preclinical MRONJ research, including the rat, mouse, rice rat, rabbit, dog, sheep, and pig. Animal research has contributed immensely to advancing the MRONJ field, particularly, but not limited to, in developing models and investigating risk factors that were first observed in humans. MRONJ models have been developed using clinically relevant doses of systemic risk factors, like N-BPs, anti-RANKL antibodies, or AgIs. Specific local oral risk factors first noted in humans, including tooth extraction and inflammatory dental disease (e.g., periodontitis, periapical infection, etc.), were then added. Research in rodents, particularly the rat, and, to some extent, the mouse, across multiple laboratories, has contributed to establishing multiple relevant and complementary preclinical models. Models in larger species produced accurate clinical and histopathologic outcomes suggesting a potential role for confirming specific crucial findings from rodent research. We view the current state of animal models for MRONJ as good. The rodent models are now reliable enough to produce large numbers of MRONJ cases that could be applied in experiments testing treatment modalities. The course of MRONJ, including stage 0 MRONJ, is characterized well enough that basic studies of the molecular or enzyme-level findings in different MRONJ stages are possible. This review provides a current overview of the existing models of MRONJ, their more significant features and findings, and important instances of their application in preclinical research.
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Affiliation(s)
- J I Aguirre
- Department of Physiological Sciences, University of Florida (UF), Gainesville, FL, United States of America.
| | - E J Castillo
- Department of Physiological Sciences, University of Florida (UF), Gainesville, FL, United States of America.
| | - D B Kimmel
- Department of Physiological Sciences, University of Florida (UF), Gainesville, FL, United States of America
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Kim HY. Review and Update of the Risk Factors and Prevention of Antiresorptive-Related Osteonecrosis of the Jaw. Endocrinol Metab (Seoul) 2021; 36:917-927. [PMID: 34674506 PMCID: PMC8566140 DOI: 10.3803/enm.2021.1170] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/23/2021] [Indexed: 12/21/2022] Open
Abstract
Antiresorptive-related osteonecrosis of the jaw (ARONJ) is a rare but serious adverse event of bisphosphonate or denosumab administration; it is associated with severe pain and a deteriorated quality of life. Since its first report in 2003, there have been many studies on its definition, epidemiology, pathophysiology, diagnosis, and treatment. Nevertheless, the epidemiology and mechanisms underlying this condition have not yet been fully delineated and several risk factors are known. Moreover, as there is no effective treatment currently available for osteonecrosis of the jaw, prevention is essential. Furthermore, close cooperation between prescribing physicians and dentists is important. The aim of this review was to provide up-to-date information regarding the risk factors and prevention of ARONJ from a physician's perspective.
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Affiliation(s)
- Ha Young Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
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12
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Medication-Related Osteonecrosis of the Jaw: A Critical Narrative Review. J Clin Med 2021; 10:jcm10194367. [PMID: 34640383 PMCID: PMC8509366 DOI: 10.3390/jcm10194367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/15/2021] [Accepted: 09/20/2021] [Indexed: 12/24/2022] Open
Abstract
Background: Nearly two decades have passed since a paradoxical reaction in the orofacial region to some bone modifying agents and other drugs was recognized, namely medication-related osteonecrosis of the jaw (MRONJ). Purpose: The aim of this manuscript was to critically review published data on MRONJ to provide an update on key terminology, concepts, and current trends in terms of prevention and diagnosis. In addition, our objective was to examine and evaluate the therapeutic options available for MRONJ. Methods: The authors perused the most relevant literature relating to MRONJ through a search in textbooks and published articles included in several databases for the years 2003–2021. Results and conclusions: A comprehensive update of the current understanding of these matters was elaborated, addressing these topics and identifying relevant gaps of knowledge. This review describes our updated view of the previous thematic blocks, highlights our current clinical directions, and emphasizes controversial aspects and barriers that may lead to extending the accumulating body of evidence related to this severe treatment sequela.
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Reier S, Turyanskaya A, Heimel P, Frischauf N, Meusburger D, Heuser T, Drexler N, Janovszky Á, Streli C, Slezak P, Plochberger B, Dungel P, Szabó A, Walter A. Cross-modality imaging of bisphosphonate-treated murine jawbones. Analyst 2021; 146:4683-4699. [PMID: 34195707 DOI: 10.1039/d0an02373f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this proof-of-principle study, we established and implemented a cross-modality imaging (CMI) pipeline to characterize and compare bisphosphonate (BIS)-treated jawbones of Sprague-Dawley rats after tooth extraction after physical therapies (photobiomodulation and extracorporeal shockwave therapy (PBMT and ESWT)). We showcase the feasibility of such a CMI approach and its compatibility across imaging modalities to probe the same region of interest (ROI) of the same jawbone. Jawbones were imaged in toto in 3D using micro-Computed Tomography to identify ROIs for subsequent sequential 2D analysis using well-established technologies such as Atomic Force Microscopy and Scanning Electron Microscopy, and recent imaging approaches in biomedical settings, such as micro-X-Ray Fluorescence Spectroscopy. By combining these four modalities, multiscale information on the morphology, topography, mechanical stiffness (Young's modulus), and calcium, zinc and phosphorus concentrations of the bone was collected. Based on the CMI pipeline, we characterized and compared the jawbones of a previously published clinically relevant rat model of BIS-related osteonecrosis of the jawbone (BRONJ) before and after treatment with BISs, PBMT and ESWT. While we did not find that physical therapies altered the mechanical and elemental jawbone parameters with significance (probably due to the small sample size of only up to 5 samples per group), both ESWT and PBMT reduced pore thicknesses and bone-to-enamel distances significantly compared to the controls. Although focused on BIS-treated jawbones, the established CMI platform can be beneficial in the study of bone-related diseases in general (such as osteoarthritis or -porosis) to acquire complementary hallmarks and better characterize disease status and alleviation potentials.
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Affiliation(s)
- Susanne Reier
- Austrian BioImaging/CMI, Vienna BioCenter Core Facilities GmbH (VBCF), Vienna, Austria.
| | | | - Patrick Heimel
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Trauma Research Center, Austrian BioImaging/CMI, Vienna, Austria and Core Facility Hard Tissue and Biomaterial Research, Karl Donath Laboratory, University Clinic of Dentistry, Medical University Vienna, Vienna, Austria
| | - Nikolaus Frischauf
- University of Applied Sciences Upper Austria, Austrian BioImaging/CMI, Vienna, Austria
| | - Daria Meusburger
- Austrian BioImaging/CMI, Vienna BioCenter Core Facilities GmbH (VBCF), Vienna, Austria.
| | - Thomas Heuser
- Austrian BioImaging/CMI, Vienna BioCenter Core Facilities GmbH (VBCF), Vienna, Austria.
| | - Nicole Drexler
- Austrian BioImaging/CMI, Vienna BioCenter Core Facilities GmbH (VBCF), Vienna, Austria.
| | - Ágnes Janovszky
- Department of Oral and Maxillofacial Surgery, University of Szeged, Hungary
| | | | - Paul Slezak
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Trauma Research Center, Austrian BioImaging/CMI, Vienna, Austria
| | - Birgit Plochberger
- University of Applied Sciences Upper Austria, Austrian BioImaging/CMI, Vienna, Austria
| | - Peter Dungel
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Trauma Research Center, Austrian BioImaging/CMI, Vienna, Austria
| | - Andrea Szabó
- Institute of Surgical Research, Faculty of Medicine, University of Szeged, Hungary
| | - Andreas Walter
- Austrian BioImaging/CMI, Vienna BioCenter Core Facilities GmbH (VBCF), Vienna, Austria.
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Schoenhof R, Munz A, Yuan A, ElAyouti A, Boesmueller H, Blumenstock G, Reinert S, Hoefert S. Microarchitecture of medication-related osteonecrosis of the jaw (MRONJ); a retrospective micro-CT and morphometric analysis. J Craniomaxillofac Surg 2021; 49:508-517. [PMID: 33707134 DOI: 10.1016/j.jcms.2021.02.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 01/13/2021] [Accepted: 02/18/2021] [Indexed: 12/14/2022] Open
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is a severe side effect of antiresorptive (AR) drugs such as bisphosphonates (BP) and denosumab (Dmab). Although several risk factors are described, the etiology of MRONJ is still not fully elucidated. Bone-strengthening is the primary aim of antiresorptive therapy; however, overly increased bone mass and microcrack accumulation are also discussed in MRONJ etiologies. The aim of this study is to evaluate the microarchitecture of jaw bones with micro-computed tomography (micro-CT) in AR-treated patients with or without MRONJ. Human jaw bone samples of AR-treated patients were separated into 11 groups by AR treatment bisphosphonate (BP), denosumab (Dmab), both (M) and control groups. Subgroups were divided according to the clinical localization as AR-exposed vital jaw bone (BPexp, Dmabexp, Mexp), osteonecrosis-margin of a sequestrum (BPOmar, DmabOmar, MOmar) and osteonecrosis-sequestrum (BPOseq, DmabOseq, MOseq). Healthy jaw bone (CHB) and osteoporotic jaw bone (COP) represent control groups. Samples underwent retrospective micro-CT and morphometric analysis in representative units by bone volume fraction (BV/TV), bone surface density (BS/BV), trabecular thickness (Tr.Th.), trabecular number (Tr.N.), trabecular space (Tr.Sp.), Euler characteristic for bone connectivity, bone mineral density (BMD) and tissue mineral density (TMD). A total of 141 samples from 78 patients were analyzed. BV/TV of Mexp group (mean: 0.46 ± 0.27) was significantly higher than in the COP group (mean: 0.14 ± 0.05; p = 0.0053). Tr.Th. differed significantly between the BPexp group (mean: 0.32 ± 0.15) and the Mexp group (mean: 0.57 ± 0.20; p = 0.0452) as well as between the BPOseq group (mean: 0.25 ± 0.10) and the MOseq group (mean: 0.39 ± 0.18; p = 0.0417). Signs of trabecular thickening and unorganized trabecular microarchitecture from AR-exposed- to sequestrum groups, were analyzed in 3D reconstructions. However, BS/BV, Tr.N., and Tr.Sp. showed no significant differences. Euler characteristic of the BPOseq group (median: 7.46) doubled compared to that of the BPexp group (median: 14.97; p = 0.0064). Mineralization parameters BMD and TMD were similar in all groups. Findings show evidence of enhanced bone mass and suspect microarchitecture in some AR-treated jaw bone compared to osteoporotic jaw bone. Despite increased bone mass, some MRONJ samples showed decreased trabecular connectivity by Euler characteristic compared to AR-treated jaw bone. These samples may indicate extensive ossification and ineffective bone mass with superficially higher bone mass without existing or even reduced mechanical stability, indicated by connectivity loss. This result might also suggest a high risk to microcrack accumulation. At some point, possibly some kind of over-ossification could lead to under-nourishment and microarchitectural weakness, creating instability, subsequently increasing vulnerability to MRONJ.
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Affiliation(s)
- Rouven Schoenhof
- Department of Oral and Maxillofacial Surgery, University Hospital Tuebingen, Osianderstrasse 2-8, 72076, Tuebingen, Germany
| | - Adelheid Munz
- Department of Oral and Maxillofacial Surgery, University Hospital Tuebingen, Osianderstrasse 2-8, 72076, Tuebingen, Germany
| | - Anna Yuan
- Department of Oral and Maxillofacial Surgery, University Hospital Tuebingen, Osianderstrasse 2-8, 72076, Tuebingen, Germany
| | - Ashraf ElAyouti
- Department of Conservative Dentistry and Periodontology, University Hospital Tuebingen, Osianderstrasse 2-8, 72076, Tuebingen, Germany
| | - Hans Boesmueller
- Institute of Pathology, Liebermeisterstrasse 8, 72076, Tuebingen, Germany
| | - Gunnar Blumenstock
- Institute for Clinical Epidemiology and Applied Biometry, University Hospital Tuebingen, Silcherstrasse 5, 72076, Tuebingen, Germany
| | - Siegmar Reinert
- Department of Oral and Maxillofacial Surgery, University Hospital Tuebingen, Osianderstrasse 2-8, 72076, Tuebingen, Germany
| | - Sebastian Hoefert
- Department of Oral and Maxillofacial Surgery, University Hospital Tuebingen, Osianderstrasse 2-8, 72076, Tuebingen, Germany.
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15
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Rosenberg SA, Migliorati C, Romanos GE. Is medication-related osteonecrosis of the jaw associated with tumor necrosis factor-α inhibition? Oral Surg Oral Med Oral Pathol Oral Radiol 2021; 131:422-427. [PMID: 33408034 DOI: 10.1016/j.oooo.2020.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 12/05/2020] [Accepted: 12/10/2020] [Indexed: 12/22/2022]
Abstract
OBJECTIVE This article reviews the literature and evidence of the association of medication-related osteonecrosis of the jaw with tumor necrosis factor-α inhibition. METHODS A systematic review was performed using electronic databases (PubMed, MEDLINE, and Embase) using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Key terms were used in the search. No restrictions were placed on publication status. Selection criteria comprised all levels of available evidence. Articles in the English language were selected up to and including July 2020. Reference lists of relevant studies were searched for additional articles. Articles were selected on the basis of inclusion and exclusion criteria. Findings from eligible studies were extracted by one reviewer and confirmed by a second. Disagreements were settled through discussion. RESULTS The initial search of the key terms yielded 2107 articles. There were 1192 articles remaining after removal of duplicates and addition of 6 articles that were hand-selected from among reference lists of relevant studies. There were 12 eligible articles after screening. The full texts were read, and 5 articles were included on the basis of inclusion and exclusion criteria. CONCLUSIONS Further research is required to determine an association of medication-related osteonecrosis of the jaw and tumor necrosis factor-α inhibition.
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Affiliation(s)
- Stacy A Rosenberg
- Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Cesar Migliorati
- College of Dentistry, University of Florida, Gainesville, FL, USA
| | - Georgios E Romanos
- Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA.
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Koth VS, Salum FG, de Figueiredo MAZ, Cherubini K. Morphological and immunohistochemical features of tooth extraction sites in rats treated with alendronate, raloxifene, or strontium ranelate. Clin Oral Investig 2020; 25:2705-2716. [PMID: 32968945 DOI: 10.1007/s00784-020-03585-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 09/14/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate morphological and immunohistochemical features of tooth extraction sites in rats subjected to different antiresorptive drugs. MATERIALS AND METHODS Wistar rats were allocated into 4 groups according to the treatment: (1) alendronate, (2) raloxifene, (3) strontium ranelate, and (4) control. The animals underwent tooth extraction (60th day of treatment) and afterwards were euthanized (90th day of treatment). Tooth extraction sites were analyzed by means of scanning electron microscopy (SEM), hematoxylin-eosin staining (H&E), and immunohistochemical staining (RANKL and OPG). RESULTS On H&E analysis, the alendronate group showed greater amounts of non-vital bone, biofilm, inflammatory infiltrate and root fragment, and smaller amount of vital bone. The strontium ranelate group showed great amount of non-vital bone. This group also had lower levels of OPG, while the alendronate group showed lower OPG and RANKL than the other groups. On SEM analysis, the alendronate group showed a considerable number of microcracks on the alveolar bone surface and few Howship lacunae and lack of bone cells as well. The raloxifene, strontium ranelate, and control groups showed a large number of bone cells and Howship lacunae on the bone surface and few microcracks. CONCLUSION Alendronate therapy is associated with macro- and microscopic features of medication-related osteonecrosis of the jaw at tooth extraction sites, whereas raloxifene therapy is not, and strontium ranelate therapy is associated with non-vital bone. CLINICAL RELEVANCE Osteonecrosis of the jaws is a serious side effect of alendronate therapy, where tooth extraction is a major risk factor. Considering the significant number of patients undergoing antiresorptive therapies worldwide, the present study investigated whether raloxifene and strontium ranelate interfere with bone repair after tooth extraction in a similar way to bisphosphonates.
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Affiliation(s)
- Valesca Sander Koth
- Post-Graduate Program, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
- Serviço de Estomatologia-Hospital São Lucas, PUCRS, Av. Ipiranga, 6690 Sala 231, Porto Alegre, RS, 90610-000, Brazil.
| | - Fernanda Gonçalves Salum
- Post-Graduate Program, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- Serviço de Estomatologia-Hospital São Lucas, PUCRS, Av. Ipiranga, 6690 Sala 231, Porto Alegre, RS, 90610-000, Brazil
| | - Maria Antonia Zancanaro de Figueiredo
- Post-Graduate Program, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- Serviço de Estomatologia-Hospital São Lucas, PUCRS, Av. Ipiranga, 6690 Sala 231, Porto Alegre, RS, 90610-000, Brazil
| | - Karen Cherubini
- Post-Graduate Program, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- Serviço de Estomatologia-Hospital São Lucas, PUCRS, Av. Ipiranga, 6690 Sala 231, Porto Alegre, RS, 90610-000, Brazil
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Risk factors for bisphosphonate-associated osteonecrosis of the jaw in the prospective randomized trial of adjuvant bisphosphonates for early-stage breast cancer (SWOG 0307). Support Care Cancer 2020; 29:2509-2517. [PMID: 32929540 DOI: 10.1007/s00520-020-05748-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 09/04/2020] [Indexed: 12/11/2022]
Abstract
PURPOSE Bisphosphonates reduce bone metastases in postmenopausal women with early-stage breast cancer but carry the risk of bisphosphonate-related osteonecrosis of the jaw (BRONJ). We describe risk factors for BRONJ and compare BRONJ provoked by infection or trauma with spontaneous lesions, which carry a better prognosis. METHODS SWOG 0307 randomized women with stage I-III breast cancer to receive zoledronic acid (ZA), clodronate (CL), or ibandronate (IB) for 3 years, implemented BRONJ prevention guidelines, and collected information about dental health and development of BRONJ. All statistical tests were two-sided. RESULTS Of 6018 women, 48 developed BRONJ. Infection was present in 21 (43.8%). Median time to BRONJ was 2.1 years for ZA, 2.0 years for IB, and 3.4 years for clodronate (p = 0.04). BRONJ was associated with bisphosphonate type (28/2231 (1.26%) for ZA, 8/2235 (0.36%) for CL, 12/1552 (0.77%) for IB), dental calculus (OR 2.03), gingivitis (OR 2.11), moderate/severe periodontal disease (OR 2.87), and periodontitis > 4 mm (OR 2.20) (p < 0.05). Of 57 lesions, BRONJ occurred spontaneously in 20 (35.1%) and was provoked by dental extraction in 20 (35.1%), periodontal disease in 14 (24.6%), denture trauma in 6 (10.5%), and dental surgery in 2 (3.5%). Spontaneous BRONJ occurred more frequently at the mylohyoid ridge. There were no differences in dental disease, infection, or bisphosphonate type between spontaneous and provoked BRONJ. CONCLUSION ZA and worse dental health were associated with increased incidence of BRONJ, with a trend toward additive risk when combined. BRONJ incidence was lower than in similar studies, with prevention strategies likely linked to this. CLINICAL TRIAL NUMBER NCT00127205 REGISTRATION DATE: July 2005.
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18
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Migliorati CA, Brennan MT, Peterson DE. Medication-Related Osteonecrosis of the Jaws. J Natl Cancer Inst Monogr 2020; 2019:5551354. [PMID: 31425596 DOI: 10.1093/jncimonographs/lgz009] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/14/2019] [Accepted: 04/19/2019] [Indexed: 12/13/2022] Open
Abstract
Medication-related osteonecrosis of the jaw is an oral complication in cancer patients being treated with either antiresorptive or antiangiogenic drugs. The first reports of MRONJ were published in 2003. Hundreds of manuscripts have been published in the medical and dental literature describing the complication, clinical and radiographic signs and symptoms, possible pathophysiology, and management. Despite this extensive literature, the pathobiological mechanisms by which medication-related osteonecrosis of the jaw develops have not yet been fully delineated. The aim of this manuscript is to present current knowledge about the complication ragarding to the definition, known risk factors, and clinical management recommendations. Based on this current state of the science, we also propose research directions that have potential to enhance the management of future oncology patients who are receiving these agents.
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Affiliation(s)
- Cesar A Migliorati
- Department of Oral and Maxillofacial Diagnostic Sciences, University of Florida College of Dentistry, Gainesville, FL
| | - Michael T Brennan
- Department of Oral Medicine, Carolinas Medical Center, Charlotte, NC
| | - Douglas E Peterson
- Department of Oral Health and Diagnostic Sciences, School of Dental Medicine, and Head & Neck Cancer/Oral Oncology Program, Neag Comprehensive Cancer Center, UConn Health, Farmington, CT
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19
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Skeletal Site-Specific Response of Jawbones and Long Bones to Surgical Interventions in Rats Treated with Zoledronic Acid. BIOMED RESEARCH INTERNATIONAL 2020; 2019:5138175. [PMID: 31930124 PMCID: PMC6942746 DOI: 10.1155/2019/5138175] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Accepted: 08/01/2019] [Indexed: 11/24/2022]
Abstract
Bisphosphonates (BPs) have been extensively used for management of bone diseases with pathologically high resorption. Despite the great clinical benefits, a severe complication known as medication-related osteonecrosis of the jaw (MRONJ) has been reported. It is found that most of the reported MRONJ cases were limited in the jawbones/craniofacial bones instead of long bones. The present study aims to investigate the differential bone response to surgical procedures between jawbones and long bones exposed to BPs. Forty-eight skeletal mature Sprague Dawley female rats were administered oncologic dose of zoledronic acid (ZA) or normal saline for 4 weeks and then subjected to tooth extraction on the mandible and maxilla, and a bone defect creation on the femur. After surgical procedures, ZA or saline treatment were continued until sacrifice at week 2, week 4, and week 8, post-operatively. The samples were subjected to micro-computerized tomography (micro-CT) and histological assessment. Osteonecrosis was only found in jawbones in ZA-treated rats. ZA-treated rats showed significantly higher bone mineral density with greater bone volume in all surgical sites than that in the controls. The length of exposure of ZA did not seem to affect trabecular microstructure, and it only showed higher bone volume and BMD with longer healing time which is expected in the healing process.
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20
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Mohsin S, Kaimala S, AlTamimi EKY, Tariq S, Adeghate E. In vivo Labeling of Bone Microdamage in an Animal Model of Type 1 Diabetes Mellitus. Sci Rep 2019; 9:16994. [PMID: 31740777 PMCID: PMC6861243 DOI: 10.1038/s41598-019-53487-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 10/21/2019] [Indexed: 01/23/2023] Open
Abstract
Type 1 diabetes mellitus (DM1) is linked to a decrease in bone strength. Bone strength entails both bone mineral density and bone quality. Limited data are available regarding diabetes-induced microdamage, which can severely influence bone quality. This study has investigated bone microdamage as a measure of bone quality in an animal model of DM1. Microdamage in the neck of the femur was labelled in vivo using multiple fluorochromes at 4, 12 and 24 weeks after the onset of DM1. Microcracks were quantified and their morphology analyzed using microscopy techniques. The mean length of microcracks at 24 weeks, and crack numerical and surface densities were significantly higher (p < 0.05) 4 weeks after the onset of DM1 when compared with control. Diffuse damage density was highest at 12 weeks after the onset of DM1. The arrangement of the collagen fibrils became progressively more irregular from 4 to 24 weeks of DM. This is the first study to analyze microdamage in vivo at different time points of DM1. DM1is associated with microcracks from the early stage, however bone microstructure shows toughening mechanisms that arrest their growth but disease progression further deteriorates bone quality resulting in longer microcracks which may increase fracture risk.
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Affiliation(s)
- Sahar Mohsin
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, PO Box. 17666, UAE.
| | - Suneesh Kaimala
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, PO Box. 17666, UAE
| | - Eman Khamis Yousef AlTamimi
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, PO Box. 17666, UAE
| | - Saeed Tariq
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, PO Box. 17666, UAE
| | - Ernest Adeghate
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, PO Box. 17666, UAE
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George EL, Truesdell SL, Magyar AL, Saunders MM. The effects of mechanically loaded osteocytes and inflammation on bone remodeling in a bisphosphonate-induced environment. Bone 2019; 127:460-473. [PMID: 31301402 DOI: 10.1016/j.bone.2019.07.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 07/03/2019] [Accepted: 07/08/2019] [Indexed: 12/23/2022]
Abstract
Bisphosphonate-related osteonecrosis of the jaw is a disease appearing after tooth removal in patients undergoing bisphosphonate treatment for metastasizing cancers and osteoporosis. The complexity of the condition requires a multicellular model to address the net effects of two key risk factors: mechanical trauma (pathologic overload) and inflammation. In this work, a system comprised of a polydimethylsiloxane chip and mechanical loading device is used to expose bisphosphonate-treated osteocytes to mechanical trauma. Specifically, osteocytes are treated with the potent nitrogen-containing bisphosphonate, zoledronic acid, and exposed to short-term pathologic overload via substrate stretch. During bone remodeling, osteocyte apoptosis plays a role in attracting pre-osteoclasts to sites of damage; as such, lactate dehydrogenase activity, cell death and protein expression are evaluated as functions of load. Additionally, the effects of osteocyte soluble factors on osteoclast and osteoblast functional activity are quantified. Osteoclast activity and bone resorption are quantified in the presence and absence of inflammatory components, lipopolysaccharide and interferon gamma. Results suggest that inflammation associated with bacterial infection may hinder bone resorption by osteoclasts. In addition, osteocytes may respond to overload by altering expression of soluble signals that act on osteoblasts to attenuate bone formation. These findings give insight into the multicellular interactions implicated in bisphosphonate-related osteonecrosis of the jaw.
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Affiliation(s)
- Estee L George
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325-0302, USA.
| | - Sharon L Truesdell
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325-0302, USA.
| | - Alexandria L Magyar
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325-0302, USA.
| | - Marnie M Saunders
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325-0302, USA.
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Lorenzo-Pouso AI, Pérez-Sayáns M, García A, Carballo J. Vitamin D supplementation: Hypothetical effect on medication-related osteonecrosis of the jaw. Med Hypotheses 2018; 116:79-83. [PMID: 29857915 DOI: 10.1016/j.mehy.2018.04.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/10/2018] [Accepted: 04/27/2018] [Indexed: 10/17/2022]
Abstract
Vitamin D is an important nutrient for bone health and skeleton growth. Few foods are natural sources of this secosteroid; this is the reason why the consumption of vitamin D as a dietary supplement is becoming common in developed countries. For many years vitamin D has been considered crucial in the treatment and prevention of the Global Burden of Disease and in a reduction in mortality among elder people. Many health care providers prescribe these supplements in the management of osteoporosis and metabolic bone diseases; specifically in the primary prevention of fractures. Recently medication-related osteonecrosis of the jaw (MRONJ) has been reported as severe late sequelae of antiresorptive therapies (i.e., bisphosphonates and some monoclonal antibodies). Although MRONJ-related pathophysiology is not fully understood, there are three fundamental theories to explain it: (1) the inhibition of osteoclasts, (2) the inhibition of angiogenesis and (3) the processes of inflammation-infection. Recent advances in Vitamin D research have shown that this secosteroid can play a potential pivotal role in many of the different etiological pathways of MRONJ. Furthermore, there are a large number of co-morbidities between the deficit of this vitamin and other MRONJ concomitant outcomes. Our hypothesis argues that the low-risk and low-cost vitamin D dietary supplementation may prove to be suitable for use as a practical MRONJ prevention strategy. The described framework gives more insight into the study of disease mechanisms, search of potential biomarkers, and therapeutic targets in MRONJ.
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Affiliation(s)
- Alejandro I Lorenzo-Pouso
- Oral Medicine, Oral Surgery and Implantology Unit, School of Dentistry, Faculty of Medicine and Odontology, University of Santiago de Compostela, Santiago de Compostela, Spain; GI-1319 Research Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain.
| | - Mario Pérez-Sayáns
- Oral Medicine, Oral Surgery and Implantology Unit, School of Dentistry, Faculty of Medicine and Odontology, University of Santiago de Compostela, Santiago de Compostela, Spain; GI-1319 Research Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Abel García
- Oral Medicine, Oral Surgery and Implantology Unit, School of Dentistry, Faculty of Medicine and Odontology, University of Santiago de Compostela, Santiago de Compostela, Spain; GI-1319 Research Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Javier Carballo
- Department of Food Technology, Faculty of Sciences, University of Vigo - Ourense Campus, Ourense, Spain
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Abstract
Cases of medication-related osteonecrosis of the jaw (MRONJ) have been more commonly associated with aminobiphosphonate therapy than with alkylbiphosphonate treatment. Here, we report a case of MRONJ in a subject who received an alkylbiphosphonate, clodronate, for the treatment of osteoporosis, and discuss the pathogenic mechanisms of alkylbiphosphonates and the possible reasons for the spontaneous and rapid remission of MRONJ occurring in our patient.
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24
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George EL, Lin YL, Saunders MM. Bisphosphonate-related osteonecrosis of the jaw: a mechanobiology perspective. Bone Rep 2018; 8:104-109. [PMID: 29955628 PMCID: PMC6020112 DOI: 10.1016/j.bonr.2018.03.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/04/2018] [Accepted: 03/13/2018] [Indexed: 01/02/2023] Open
Abstract
Bisphosphonate-related osteonecrosis of the jaw (BRONJ) is a dramatic disintegration of the jaw that affects patients treated with bisphosphonates (BPs) for diseases characterized by bone loss. These diseases are often metastasizing cancers (like multiple myeloma, breast cancer and prostate cancer (Aragon-Ching et al., 2009)) as well as osteoporosis. BRONJ is incompletely understood, although it is believed to arise from a defect in bone remodeling—the intricate process by which sensory osteocytes signal to osteoclasts and osteoblasts to resorb and form bone in response to stimuli. Further, tooth extraction and infection have been overwhelmingly linked to BRONJ (Ikebe, 2013). Because bone cells are highly networked, the importance of multicellular interactions and mechanotransduction during the onset of these risk factors cannot be overstated. As such, this perspective addresses current research on the effects of BPs, mechanical load and inflammation on bone remodeling and on development of BRONJ. Our investigation has led us to conclude that improved in vitro systems capable of adequately recapitulating multicellular communication and incorporating effects of osteocyte mechanosensing on bone resorption and formation are needed to elucidate the mechanism(s) by which BRONJ ensues. Current research on cofactors implicated in BRONJ is reviewed. BPs, load and inflammation work in tandem to contribute to BRONJ. Effects of cofactors on remodeling in the oral cavity are poorly understood. Osteocytes' ability to sense and respond to cofactors is likely central to BRONJ. Research is limited by a lack of multicellular systems integrating mechanosensing.
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Affiliation(s)
- Estee L George
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325, USA
| | - Yi-Ling Lin
- University of California, Los Angeles School of Dentistry, 10833 Le Conte Ave., Los Angeles, CA 90095, USA
| | - Marnie M Saunders
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325, USA
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