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Yong CW, Sng TJH, Choo SHJ, Chew JRJ, Islam I. Implant presence-triggered osteonecrosis: A scoping review. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2024; 125:101759. [PMID: 38184196 DOI: 10.1016/j.jormas.2024.101759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 12/17/2023] [Accepted: 01/03/2024] [Indexed: 01/08/2024]
Abstract
Unlike medication-related osteonecrosis of the jaw (MRONJ), implant presence-triggered osteonecrosis of the jaw (IPTO) is not well appreciated. Recent reports have suggested a mechanical aetiology unique to osseointegrated dental implants that may be responsible for this phenomenon. A scoping review was performed to consolidate the available evidence. Two reviewers independently searched the PubMed, EMBASE, CINAHL, and Cochrane Library databases. The study was performed according to the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) extension for scoping reviews. Studies that described or evaluated the development of IPTO in osseointegrated implants, which were placed prior to the commencement of anti-resorptive or anti-angiogenic agents, were included. Twenty-three (23) articles were included in this study. Patient characteristics, aetiopathogenesis, presentation, and treatment of the disease were evaluated. Most studies suggested a 6-month period between dental implant insertion and the commencement of anti-resorptive therapy as a criterion for IPTO. Both infective and mechanical processes were reported to be involved in the pathogenesis of IPTO. Most patients required surgical intervention to achieve resolution. While there are several knowledge gaps regarding IPTO, the evidence points towards a continuum in the pathogenesis of the disease, whereby there is a mechanical cause followed by secondary infection. Similar to typical MRONJ, the severity and treatment required also vary. Persistent peri‑implantitis features around a dental implant should alert the clinician to the possibility of IPTO in patients taking anti-resorptive or anti-angiogenic agents. Prompt identification of the disease may play a role in timely management or appropriate referrals.
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Affiliation(s)
- Chee Weng Yong
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, 119085, Singapore; National University Centre for Oral Health Singapore, 9 Lower Kent Ridge Road, 119085, Singapore
| | - Timothy Jie Han Sng
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, 119085, Singapore; National University Centre for Oral Health Singapore, 9 Lower Kent Ridge Road, 119085, Singapore
| | - Sophia Hui Jia Choo
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, 119085, Singapore; National University Centre for Oral Health Singapore, 9 Lower Kent Ridge Road, 119085, Singapore
| | - Jacob Ren Jie Chew
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, 119085, Singapore; National University Centre for Oral Health Singapore, 9 Lower Kent Ridge Road, 119085, Singapore
| | - Intekhab Islam
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, 119085, Singapore; National University Centre for Oral Health Singapore, 9 Lower Kent Ridge Road, 119085, Singapore.
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Bedogni A, Mauceri R, Fusco V, Bertoldo F, Bettini G, Di Fede O, Lo Casto A, Marchetti C, Panzarella V, Saia G, Vescovi P, Campisi G. Italian position paper (SIPMO-SICMF) on medication-related osteonecrosis of the jaw (MRONJ). Oral Dis 2024; 30:3679-3709. [PMID: 38317291 DOI: 10.1111/odi.14887] [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: 06/15/2023] [Revised: 12/23/2023] [Accepted: 01/20/2024] [Indexed: 02/07/2024]
Abstract
OBJECTIVE This paper aims to describe the 2023 update position paper on MRONJ developed by the Italian Societies of Oral Pathology and Medicine (SIPMO) and of Maxillofacial Surgery (SICMF). METHODS This is the second update following the 2013 and 2020 Italian position papers by the Expert panel, which is a representation of the two scientific societies (SIPMO and SICMF). The paper is based on an extensive analysis of the available literature from January 2003 to February 2020, and the subsequent review of literature conducted between March 2020 and December 2022 to include all new relevant published papers to confirm or modify the previous set of recommendations. RESULTS This position paper highlights the main issues of MRONJ on risk estimates, disease definition, diagnostic pathway, individual risk assessment, and the fundamental role of imaging in the diagnosis, classification, and management of MRONJ. CONCLUSION The Expert Panel confirmed the MRONJ definition, the diagnostic work-up, the clinical-radiological staging system and the prophylactic drug holiday, as recognized by SIPMO-SICMF; while, it presented novel indications regarding the categories at risk of MRONJ, the prevention strategies, and the treatment strategies associated with the therapeutic drug holiday.
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Affiliation(s)
- Alberto Bedogni
- Regional Center for Prevention, Diagnosis and Treatment of Medication and Radiation-Related Bone Diseases of the Head and Neck, University of Padua, Padua (PD), Italy
- Department of Neuroscience, University of Padova, Padua (PD), Italy
| | - Rodolfo Mauceri
- Department of Surgical, Oncological and Oral Sciences (Di.Chir.On.S.), University of Palermo, Palermo (PA), Italy
- Unit of Oral Medicine and Dentistry for frail patients, Department of Rehabilitation, fragility, and continuity of care, Regional Center for Research and Care of MRONJ, University Hospital Palermo, Palermo (PA), Italy
| | - Vittorio Fusco
- Oncology Unit, Azienda Ospedaliera di Alessandria SS, Antonio e Biagio e Cesare Arrigo, Alessandria (AL), Italy
| | | | - Giordana Bettini
- Regional Center for Prevention, Diagnosis and Treatment of Medication and Radiation-Related Bone Diseases of the Head and Neck, University of Padua, Padua (PD), Italy
- Department of Neuroscience, University of Padova, Padua (PD), Italy
| | - Olga Di Fede
- Department of Surgical, Oncological and Oral Sciences (Di.Chir.On.S.), University of Palermo, Palermo (PA), Italy
| | - Antonio Lo Casto
- Department of Biomedicine, Neuroscience and Advanced Diagnostic, University of Palermo, Palermo (PA), Italy
| | - Claudio Marchetti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna (BO), Italy
| | - Vera Panzarella
- Department of Surgical, Oncological and Oral Sciences (Di.Chir.On.S.), University of Palermo, Palermo (PA), Italy
| | - Giorgia Saia
- Department of Neuroscience, University of Padova, Padua (PD), Italy
| | - Paolo Vescovi
- Department of Medicine and Surgery, Oral Medicine and Laser Surgery Unit, University Center of Dentistry, University of Parma, Parma (PR), Italy
| | - Giuseppina Campisi
- Department of Surgical, Oncological and Oral Sciences (Di.Chir.On.S.), University of Palermo, Palermo (PA), Italy
- Unit of Oral Medicine and Dentistry for frail patients, Department of Rehabilitation, fragility, and continuity of care, Regional Center for Research and Care of MRONJ, University Hospital Palermo, Palermo (PA), Italy
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Ward J, Singh A, White C, Riedel E, Lewis R, Yom SK, Halpern J, Randazzo JD, Kronstadt KL, Huryn JM, Estilo CL. Determinants of outcome in cancer patients with medication-related osteonecrosis of the jaw: A 19-year retrospective study. ORAL ONCOLOGY REPORTS 2024; 10:100488. [PMID: 38957376 PMCID: PMC11218890 DOI: 10.1016/j.oor.2024.100488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Affiliation(s)
- Jenna Ward
- Dental Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Annu Singh
- Dental Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Charlie White
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Elyn Riedel
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Roxanne Lewis
- Dental Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - SaeHee K. Yom
- Dental Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Jerry Halpern
- Dental Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Joseph D. Randazzo
- Dental Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Kenneth L. Kronstadt
- Dental Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Joseph M. Huryn
- Dental Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Cherry L. Estilo
- Dental Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
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Otto M, Neff A, Ziebart T, Halling F. A large animal model of periodontal defects in bisphosphonate-related osteonecrosis of the jaw: a comparison of clinical and radiological findings. J Periodontal Implant Sci 2024; 54:139-148. [PMID: 37681353 PMCID: PMC11227933 DOI: 10.5051/jpis.2204860243] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 05/04/2023] [Accepted: 05/18/2023] [Indexed: 09/09/2023] Open
Abstract
PURPOSE The objective of this study was to demonstrate the suitability of cone-beam computed tomography (CBCT) for in vivo research in periodontology, with implications for oral implantology, facial traumatology, and all disciplines involved in treating patients with bisphosphonate-related osteonecrosis of the jaw (BRONJ). METHODS Halves of the jaws of 9 Swiss mountain sheep, assigned to a control group (n=3), an osteoporosis group (n=3) and a zoledronate-exposed group (n=3), were examined. Clinical and radiological evaluations were conducted using CBCT imaging to assess whether periodontitis and bone defects were observed to a significant extent after surgical tooth extraction. RESULTS In contrast to the control and osteoporosis groups, the zoledronate group exhibited significant residual bone defects following tooth extraction (P<0.05). CBCT more objectively revealed these effects and enabled a numerical evaluation (in mm3). CONCLUSIONS Evaluating residual defects in bone blocks from sheep using CBCT analysis was found to be as effective as a clinical examination conducted by specialists in oral and maxillofacial surgery. The strong correlation between radiological findings and clinical conditions suggests that CBCT may become increasingly important in the future, particularly in periodontological research related to BRONJ.
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Affiliation(s)
- Marius Otto
- Department of Pediatric Surgery, Pediatric Urology and Pediatric Orthopedics, DRK Children's Hospital Siegen, Siegen, Germany
- Department of Oral and Maxillofacial Surgery, University Hospital Marburg, Marburg, Germany.
| | - Andreas Neff
- Department of Oral and Maxillofacial Surgery, University Hospital Marburg, Marburg, Germany
| | - Thomas Ziebart
- Department of Oral and Maxillofacial Surgery, University Hospital Marburg, Marburg, Germany
| | - Frank Halling
- Department of Oral and Maxillofacial Surgery, University Hospital Marburg, Marburg, Germany
- Private Practice PD Dr. Frank Halling, Gesundheitszentrum Fulda, Fulda, Germany
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Ciardo A, Simon MM, Awounvo S, Kim TS. Oral health conditions in patients under antiresorptive therapy are comparable to unexposed during supportive periodontal care. Clin Oral Investig 2023; 27:6523-6536. [PMID: 37712984 PMCID: PMC10630227 DOI: 10.1007/s00784-023-05257-y] [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: 10/14/2022] [Accepted: 09/09/2023] [Indexed: 09/16/2023]
Abstract
OBJECTIVES To investigate oral health and oral health-related quality of life (OHRQoL) of patients under antiresorptive therapy (ART) during supportive periodontal care (SPC) considering history of medication-related osteonecrosis of the jaw (MRONJ). MATERIALS AND METHODS In this cross-sectional study, 100 patients (50 receiving ART (exposed) and 50 without ART (unexposed)) in regular SPC were enrolled for a clinical oral examination and the evaluation of OHRQoL using the OHIP-G14-questionnaire. History of MRONJ was assessed by anamnesis and reviewing patient records. RESULTS There were no statistically significant group differences in age (exposed: 70.00 ± 9.07 versus unexposed: 71.02 ± 8.22 years), sex, distribution of systemic diseases and duration of SPC (on average 8.61 ± 5.73 years). Number of teeth (21.02 ± 5.84 versus 21.40 ± 5.42), DMFT (18.38 ± 3.85 versus 17.96 ± 4.08), probing pocket depth (2.31 ± 0.20 versus 2.38 ± 0.26), clinical attachment level (3.25 ± 0.76 versus 3.46 ± 0.58) and bleeding on probing (15.07 ± 11.53 versus 15.77 ± 13.08) were also not significantly different. The OHIP-G14 sum-score was significantly higher in exposed participants (6.10 ± 6.76 versus 3.62 ± 5.22, p = 0.043). History of MRONJ was prevalent in 8% of patients under ART. Periodontal/peri-implant-related MRONJ were reported in three participants with cancer (n = 1 before and n = 2 after active periodontal therapy). History of MRONJ due to endodontic/restorative reasons was reported in one patient with osteoporosis. CONCLUSIONS Patients under ART in SPC demonstrated similar clinical periodontal and dental status but lower OHRQoL compared to unexposed (not statistically significant). Patient awareness of the MRONJ-risk and appropriate preventive measures should be ensured. CLINICAL RELEVANCE SPC in osteoporotic patients under ART appeared safe regarding MRONJ, but further investigations on the MRONJ-risk in patients with different risk-profiles are necessary. STUDY REGISTRATION clinicaltrials.gov (#NCT04192188).
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Affiliation(s)
- Antonio Ciardo
- Section of Periodontology, Department of Conservative Dentistry, Clinic for Oral, Dental and Maxillofacial Diseases, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
| | - Marlinde M Simon
- Section of Periodontology, Department of Conservative Dentistry, Clinic for Oral, Dental and Maxillofacial Diseases, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Sinclair Awounvo
- Institute of Medical Biometry, University of Heidelberg, Heidelberg, Germany
| | - Ti-Sun Kim
- Section of Periodontology, Department of Conservative Dentistry, Clinic for Oral, Dental and Maxillofacial Diseases, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
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6
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Ramanauskaite A, Krüger N, Obreja K, Borchert F, Dahmer I, Schwarz F. Influence of antiresorptive/antiangiogenic therapy on the surgical treatment outcomes of experimentally induced peri-implantitis lesions. Clin Oral Investig 2023; 27:6657-6666. [PMID: 37783801 PMCID: PMC10630228 DOI: 10.1007/s00784-023-05275-w] [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: 05/04/2023] [Accepted: 09/23/2023] [Indexed: 10/04/2023]
Abstract
OBJECTIVE To investigate the influence of various antiresorptive and antiangiogenic medications on the resolution of experimentally induced peri-implantitis lesions after different surgical treatment approaches. MATERIALS AND METHODS Forty-eight albino rats randomly received a dual application of the following medications: (1) amino-bisphosphonate (zoledronate (Zo)) (n = 8), (2) RANKL inhibitor (denosumab (De)) (n = 8), (3) antiangiogenic (bevacizumab (Be)) (n = 8), (4) Zo + Be (n = 8), (5) De + Be (n = 8), or (6) no medication (control (Co)) (n = 8). Ligature-induced peri-implantitis lesions were established at 2 maxillary implants over 16 weeks. Afterward, animals were randomly treated either with open flap debridement (OFD) or reconstructive therapy (RT). Treatment procedures were followed by a 12-week healing period. The histological outcomes included residual defect length (DL); defect width (DW) at the bone crest (BC-DW); 25%, 50%, and 75% of the DL; and areas of inflammatory cell infiltrate (ICT). When present, areas of bone sequester (BS) were assessed considering the animal as a statistical unit. RESULTS A total of 21 animals were analyzed (Zo: RT = 3, OFD = 1; De: RT = 3, OFD = 2; Be: OFD = 1; Zo + Be: RT = 2, OFD = 2; Co: RT = 3, OFD = 2). Implant loss rates were comparable among the experimental groups. Except for the 25% and 75% DW values that were significantly higher in the Zo + Be group compared to the Co group (p = 0.04 and p = 0.03, respectively), no significant differences were found among the experimental groups for the DL (lowest-Be: 0.56 mm; highest-Co: 1.05 mm), BC-DW (lowest-De: 0.86 mm, highest-Co: 1.07 mm), 50% DW (lowest-De: 0.86 mm; highest-Be + Zo: 1.29 mm), and ICT (lowest-Be: 0.56 mm2; highest-Be + Zo: 1.65 mm2). All groups, except for the Zo and Be following RT, showed presence of BS. CONCLUSIONS The present findings did not reveal a marked effect of various antiresorptive/antiangiogenic medications on the resolution of experimentally induced peri-implantitis lesions, regardless of the surgical approach employed (OFD and RT). CLINICAL RELEVANCE Resolution of peri-implantitis lesions may not be affected by the investigated antiresorptive/antiangiogenic medications.
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Affiliation(s)
- Ausra Ramanauskaite
- Department of Oral Surgery and Implantology, Goethe University, Carolinum, Theodor-Stern-Kai 7, Building 29, 60596, Frankfurt am Main, Germany
| | - Nadine Krüger
- Department of Oral Surgery and Implantology, Goethe University, Carolinum, Theodor-Stern-Kai 7, Building 29, 60596, Frankfurt am Main, Germany
| | - Karina Obreja
- Department of Oral Surgery and Implantology, Goethe University, Carolinum, Theodor-Stern-Kai 7, Building 29, 60596, Frankfurt am Main, Germany
| | - Fanya Borchert
- Department of Oral Surgery and Implantology, Goethe University, Carolinum, Theodor-Stern-Kai 7, Building 29, 60596, Frankfurt am Main, Germany
| | - Iulia Dahmer
- Department of Oral Surgery and Implantology, Goethe University, Carolinum, Theodor-Stern-Kai 7, Building 29, 60596, Frankfurt am Main, Germany
| | - Frank Schwarz
- Department of Oral Surgery and Implantology, Goethe University, Carolinum, Theodor-Stern-Kai 7, Building 29, 60596, Frankfurt am Main, Germany.
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Landi L, Leali PT, Barbato L, Carrassi AM, Discepoli N, Muti PCM, Oteri G, Rigoni M, Romanini E, Ruggiero C, Tarantino U, Varoni E, Sforza NM, Brandi ML. Anti-resorptive therapy in the osteometabolic patient affected by periodontitis. A joint position paper of the Italian Society of Orthopaedics and Traumatology (SIOT) and the Italian Society of Periodontology and Implantology (SIdP). J Orthop Traumatol 2023; 24:36. [PMID: 37453950 DOI: 10.1186/s10195-023-00713-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 06/02/2023] [Indexed: 07/18/2023] Open
Abstract
This joint report from the Italian Society of Orthopaedics and Traumatology (SIOT) and the Italian Society of Periodontology and Implantology (SIdP) aims for a consensus around the scientific rationale and clinical strategy for the management of osteoporotic patients affected by periodontitis who are undergoing anti-resorptive (AR) therapy to manage the risk of the occurrence of a medication-related osteonecrosis of the jaws (MRONJ). Osteoporosis and periodontitis are chronic diseases with a high prevalence in aging patients, and they share some of the same pathogenetic mechanisms based upon inflammation. Available evidence shows the relationship among osteoporosis, AR agents, periodontitis and implant therapy in relation to the incidence of MRONJ. Uncontrolled periodontitis may lead to tooth loss and to the need to replace teeth with dental implants. Tooth extraction and surgical dental procedures are recognized as the main risk factors for developing MRONJ in individuals taking AR therapy for osteometabolic conditions. Although the incidence of MRONJ in osteometabolic patients taking AR therapy may be as low as 0.9%, the increasing prevalence of osteoporosis and the high prevalence of periodontitis suggest that this potential complication should not be overlooked. Good clinical practice (GCP) guidelines are proposed that aim at a more integrated approach (prescriber, dentist, periodontist and dental hygienist) in the management of periodontitis patients undergoing AR therapy for osteometabolic disorders to reduce the risk of MRONJ. Dental professional and prescribers should educate patients regarding the potential risk associated with the long-term use of AR therapy and oral health behavior.
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Affiliation(s)
- L Landi
- SIdP Panel, Via della Balduina 114, 00136, Rome, Italy.
- Private Practice Verona and Roma, Verona, Italy.
| | - P Tranquilli Leali
- SIOT Panel, Rome, Italy
- Department of Orthopedic Diseases, University of Sassari, Sassari, Italy
| | - L Barbato
- SIdP Panel, Via della Balduina 114, 00136, Rome, Italy
- Department of Experimental and Clinical Medicine, Research Unit in Periodontology and Periodontal Medicine, University of Florence, Florence, Italy
| | - A M Carrassi
- SIdP Panel, Via della Balduina 114, 00136, Rome, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - N Discepoli
- SIdP Panel, Via della Balduina 114, 00136, Rome, Italy
- Department of Medical Biotechnologies, Unit of Periodontology, University of Siena, Siena, Italy
| | - P C M Muti
- SIdP Panel, Via della Balduina 114, 00136, Rome, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- Maxillo-Facial Surgery and Dental Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - G Oteri
- SIdP Panel, Via della Balduina 114, 00136, Rome, Italy
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - M Rigoni
- SIOT Panel, Rome, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - E Romanini
- SIOT Panel, Rome, Italy
- RomaPro, Polo Sanitario San Feliciano, Rome, Italy
| | - C Ruggiero
- SIOT Panel, Rome, Italy
- Department of Medicine and Surgery, Gerontology and Geriatric Section, University of Perugia, Perugia, Italy
| | - U Tarantino
- SIOT Panel, Rome, Italy
- Department of Clinical Sciences and Translational Medicine, "Tor Vergata" University of Rome, Rome, Italy
| | - E Varoni
- SIdP Panel, Via della Balduina 114, 00136, Rome, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - N M Sforza
- SIdP Panel, Via della Balduina 114, 00136, Rome, Italy
- Private Practice Bologna, Bologna, Italy
| | - M L Brandi
- SIOT Panel, Rome, Italy.
- Osservatorio Fratture da Fragilità, Via San Gallo 123, 50100, Florence, Italy.
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Leira Y, Cho H, Marletta D, Orlandi M, Diz P, Kumar N, D'Aiuto F. Complications and treatment errors in periodontal therapy in medically compromised patients. Periodontol 2000 2023; 92:197-219. [PMID: 36166645 DOI: 10.1111/prd.12444] [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: 04/26/2022] [Accepted: 05/26/2022] [Indexed: 11/28/2022]
Abstract
Patients who are medically compromised may be at an increased risk of complications and treatment errors following periodontal therapy. A review of the evidence on the topic is presented, in relation to the type of complication reported, of periodontal treatment, and of patients' medical status. Further, a framework for risk assessment and appropriate treatment modifications is introduced, with the aim of facilitating the management of patients with existing comorbidities and reducing the incidence of treatment complications.
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Affiliation(s)
- Yago Leira
- Periodontology Unit, UCL Eastman Dental Institute & NIHR UCLH Biomedical Research Centre, University College London, London, UK
- Periodontology Unit, Faculty of Odontology, University of Santiago de Compostela & Medical-Surgical Dentistry Research Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
- Clinical Neurosciences Research Laboratory, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Hana Cho
- Special Care Dentistry Unit, ENT & Eastman Dental Hospital, UCLH NHS Foundation Trust, London, UK
| | | | - Marco Orlandi
- Periodontology Unit, UCL Eastman Dental Institute & NIHR UCLH Biomedical Research Centre, University College London, London, UK
| | - Pedro Diz
- Special Care Dentistry Unit, Faculty of Odontology, University of Santiago de Compostela & Medical-Surgical Dentistry Research Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Navdeep Kumar
- Special Care Dentistry Unit, ENT & Eastman Dental Hospital, UCLH NHS Foundation Trust, London, UK
| | - Francesco D'Aiuto
- Periodontology Unit, UCL Eastman Dental Institute & NIHR UCLH Biomedical Research Centre, University College London, London, UK
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9
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Schwarz F, Becker K, Lukman F, Müller KM, Sarabhai V, Rauch N, Kerberger R, Ramanauskaite A, Sader R, Obreja K. Influence of antiresorptive/antiangiogenic therapy on the extension of experimentally induced peri-implantitis lesions. Clin Oral Investig 2023; 27:3009-3019. [PMID: 36800025 PMCID: PMC10264532 DOI: 10.1007/s00784-023-04904-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/03/2023] [Indexed: 02/18/2023]
Abstract
OBJECTIVES To investigate the extension of experimentally induced peri-implantitis lesions under various antiresorptive and antiangiogenic medications. MATERIAL AND METHODS Fourty-eight albino rats had randomly received the following medications (dual application, n = 8 each): (1) amino-bisphosphonate (zoledronate) (Zo), (2) RANKL inhibitor (denosumab) (De), (3) antiangiogenic (bevacizumab) (Be), (4) Zo+Be, (5) De+Be, or (6) no medication (Co). Ligature- and lipopolysaccharide-induced peri-implantitis lesions were established at 2 maxillary implants over a period of 16 weeks. Histological (e.g., apical extension and surface area of the inflammatory cell infiltrate-aICT, ICT; defect length; defect width; CD68 positive cells) and bone micromorphometric (μCT) outcomes were assessed. The animal was defined as a statistical unit. RESULTS A total of n = 38 animals (Zo = 6, De = 6, Be = 8, Zo + Be = 6, De + Be = 5, Co = 7) were analyzed. ICT's were commonly marked by a positive CD68 antigen reactivity. Comparable median aICT (lowest-Zo: 0.53 mm; highest-Be: 1.22 mm), ICT (lowest-De + Be: 0.00 mm2; highest-Co: 0.49 mm2), defect length (lowest-Zo: 0.90 mm; highest-Co: 1.93 mm) and defect width (lowest-De+Be: 1.27 mm; highest-Be: 1.80 mm) values were noted in all test and control groups. Within an inner (diameter: 0.8 mm) cylindric volume of interest, the bone microstructure did not significantly differ between groups. CONCLUSIONS The present analysis did not reveal any marked effects of various antiresorptive/ antiangiogenic medications on the extension of experimentally induced peri-implantitis lesions. CLINICAL RELEVANCE The extension of peri-implantitis lesions may not be facilitated by the antiresorptive and antiangiogenic medications investigated.
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Affiliation(s)
- Frank Schwarz
- Department of Oral Surgery and Implantology, Goethe University, Frankfurt am Main, Germany.
| | - Kathrin Becker
- Department of Orthodontics, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Fanya Lukman
- Department of Oral Surgery and Implantology, Goethe University, Frankfurt am Main, Germany
| | | | - Victoria Sarabhai
- Department of Orthodontics, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Nicole Rauch
- Department of Oral Surgery, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Robert Kerberger
- Department of Orthodontics, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Ausra Ramanauskaite
- Department of Oral Surgery and Implantology, Goethe University, Frankfurt am Main, Germany
| | - Robert Sader
- Department for Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Medical Center of the Goethe University, Frankfurt am Main, Germany
| | - Karina Obreja
- Department of Oral Surgery and Implantology, Goethe University, Frankfurt am Main, Germany
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10
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Troeltzsch M, Zeiter S, Arens D, Nehrbass D, Probst FA, Liokatis P, Ehrenfeld M, Otto S. Chronic Periodontal Infection and Not Iatrogenic Interference Is the Trigger of Medication-Related Osteonecrosis of the Jaw: Insights from a Large Animal Study (PerioBRONJ Pig Model). MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59051000. [PMID: 37241232 DOI: 10.3390/medicina59051000] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 04/30/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023]
Abstract
Background and Objectives: Antiresorptive drugs are widely used in osteology and oncology. An important adverse effect of these drugs is medication-induced osteonecrosis of the jaw (MRONJ). There is scientific uncertainty about the underlying pathomechanism of MRONJ. A promising theory suspects infectious stimuli and local acidification with adverse effects on osteoclastic activity as crucial steps of MRONJ etiology. Clinical evidence showing a direct association between MRONJ and oral infections, such as periodontitis, without preceding surgical interventions is limited. Large animal models investigating the relationship between periodontitis and MRONJ have not been implemented. It is unclear whether the presence of infectious processes without surgical manipulation can trigger MRONJ. The following research question was formulated: is there a link between chronic oral infectious processes (periodontitis) and the occurrence of MRONJ in the absence of oral surgical procedures? Materials and Methods: A minipig large animal model for bisphosphonate-related ONJ (BRONJ) using 16 Göttingen minipigs divided into 2 groups (intervention/control) was designed and implemented. The intervention group included animals receiving i.v. bisphosphonates (zoledronate, n = 8, 0.05 mg/kg/week: ZOL group). The control group received no antiresorptive drug (n = 8: NON-ZOL group). Periodontitis lesions were induced by established procedures after 3 months of pretreatment (for the maxilla: the creation of an artificial gingival crevice and placement of a periodontal silk suture; for the mandible: the placement of a periodontal silk suture only). The outcomes were evaluated clinically and radiologically for 3 months postoperatively. After euthanasia a detailed histological evaluation was performed. Results: Periodontitis lesions could be induced successfully in all animals (both ZOL and NON-ZOL animals). MRONJ lesions of various stages developed around all periodontitis induction sites in the ZOL animals. The presence of MRONJ and periodontitis was proven clinically, radiologically and histologically. Conclusions: The results of this study provide further evidence that the infectious processes without prior dentoalveolar surgical interventions can trigger MRONJ. Therefore, iatrogenic disruption of the oral mucosa cannot be the decisive step in the pathogenesis of MRONJ.
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Affiliation(s)
- Matthias Troeltzsch
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, LMU Munich, Lindwurmstraße 2a, 80337 Munich, Germany
- Center for Oral, Maxillofacial and Facial Reconstructive Surgery, Maximilianstraße 5, 91522 Ansbach, Germany
| | - Stephan Zeiter
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Daniel Arens
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Dirk Nehrbass
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Florian A Probst
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, LMU Munich, Lindwurmstraße 2a, 80337 Munich, Germany
- MKG Probst, Sendlingerstraße 31, 80331 Munich, Germany
| | - Paris Liokatis
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, LMU Munich, Lindwurmstraße 2a, 80337 Munich, Germany
| | - Michael Ehrenfeld
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, LMU Munich, Lindwurmstraße 2a, 80337 Munich, Germany
| | - Sven Otto
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, LMU Munich, Lindwurmstraße 2a, 80337 Munich, Germany
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11
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D’Agostino S, Valentini G, Dolci M, Ferrara E. Potential Relationship between Poor Oral Hygiene and MRONJ: An Observational Retrospective Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:5402. [PMID: 37048016 PMCID: PMC10094150 DOI: 10.3390/ijerph20075402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/20/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is a drug-related side effect linked but not limited to antiresorptive and antiangiogenic molecules. It recognizes several triggers in dental procedures, such as surgery, endodontic treatments, and root planing, but also prosthesis decubitus or with a spontaneous onset. Although there are many reports about the onset of this pathology, oral hygiene status is mainly described as a consequence of MRONJ. Not so much is known about the oral hygiene situation as a concurrent factor in the pathogenesis of severe stages and about non-surgical periodontal therapy in patients affected by MRONJ. Actually, clear instructions for non-surgical periodontal therapy are poor in the literature. The primary outcome of the present study is to evaluate the oral hygiene status in MRONJ patients. In addition, a secondary outcome is to review the factor of poor oral hygiene as a cause or worsening aspect for MRONJ. A total of 45 subjects (19 males and 26 females) with a mean age of 59 ± 12 were enrolled. The Pearson correlation coefficient showed no significant results for the variable of the Simplified Oral Hygiene Index (OHI-S) and the American Association of Oral and Maxillofacial Surgeons (AAOMS) stage, although the majority of patients showed poor oral hygiene with an OHI-S average of 3.39 ± 1.83. As stated by the last AAOMS position paper, poor plaque control is related to a worsened MRONJ stage. The relation between the lack of oral hygiene and MRONJ onset is still unclear.
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Affiliation(s)
- Silvia D’Agostino
- Complex Unit of Odontostomatology, Interdisciplinary Department of Medicine, University Aldo Moro of Bari, 70121 Bari, Italy
- Department of Medical, Oral and Biotechnological Sciences, University Gabriele d’Annunzio, 66100 Chieti, Italy
| | - Giulia Valentini
- Department of Medical, Oral and Biotechnological Sciences, University Gabriele d’Annunzio, 66100 Chieti, Italy
| | - Marco Dolci
- Department of Medical, Oral and Biotechnological Sciences, University Gabriele d’Annunzio, 66100 Chieti, Italy
| | - Elisabetta Ferrara
- Department of Medical, Oral and Biotechnological Sciences, University Gabriele d’Annunzio, 66100 Chieti, Italy
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12
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Zhang S, Sun L, Sun L, Zhang W, Dong R. Analysis of the effect of zoledronic acid on gene differences in rat jaw. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2022; 123:e687-e693. [PMID: 35390513 DOI: 10.1016/j.jormas.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 03/09/2022] [Accepted: 04/02/2022] [Indexed: 11/17/2022]
Abstract
BACKGROUND With the widespread use of bisphosphonates, there are more and more complications about bisphosphonates, bisphosphonate-related osteonecrosis of the jaw is one.In the past ten years, there have been many studies on the mechanism of bisphosphonate associated jaw necrosis. OBJECTIVE To investigate the influence and analysis of zoledronic acid on gene differences in rat jaw. METHODS Six Sprague-Dawley female rats were randomly divided into control group (n = 3) and experimental group (n = 3). The experimental group received zoledronic acid injection for 12 weeks (dose of 0.2 mg / kg, 3 times a week).Control groups were injected with normal saline for 12 weeks. All rats were subjected to left mandibular first molar extraction 12 weeks later.After 8 weeks of tooth extraction, all rats were sacrificed and the mandible was removed.RNA-seq was used to analyze differential gene changes in all mandibles. Bioinformatics analysis of differential genes. RESULTS Compared with the two rat groups, there were 2,830 different genes, including 1,001 upregulated genes and 1,829 down-regulated genes. Gene Ontology analysis revealed that the upregulated genes were mainly associated with immune-related pathways. Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis revealed that Hedgehog signaling pathway, Notch signaling pathway and Hippo signaling pathway were associated with upregulated genes. After the Gene Set Enrichment Analysis, the Gene Ontology analysis showed that 2559 / 6588 gene sets are upregulated in phenotype experimental group,and 342 gene sets with p <0.05. The Kyoto Encyclopedia of Genes and Genomes analysis revealed that 95 / 316 gene sets are upregulated in phenotype experimental group, and four gene sets(Notch pathway, other types of O-glycan biosynthesis, ovarian steridogenesis and Hippo pathway) with p <0.05. CONCLUSIONS Changes in differential genes are mainly related to immune-related processes and pathways, and pathways related to bone metabolism. The up-regulation of some genes can promote the progress of Bisphosphonate-related osteonecrosis of the jaw.
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Affiliation(s)
- Shihan Zhang
- Department of Oral and Maxillofacial Surgery, Tianjin Medical University, Stomatological Hospital, Tianjin, China
| | - Lijun Sun
- Department of Oral and Maxillofacial Surgery, Tianjin Medical University, Stomatological Hospital, Tianjin, China
| | - Lili Sun
- Department of Oral and Maxillofacial Surgery, Tianjin Medical University, Stomatological Hospital, Tianjin, China
| | - Wenyi Zhang
- Department of Oral and Maxillofacial Surgery, Tianjin Medical University, Stomatological Hospital, Tianjin, China.
| | - Rui Dong
- Department of Oral and Maxillofacial Surgery, Tianjin Medical University, Stomatological Hospital, Tianjin, China
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13
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Fluorescent risedronate analogue 800CW-pRIS improves tooth extraction-associated abnormal wound healing in zoledronate-treated mice. COMMUNICATIONS MEDICINE 2022; 2:112. [PMID: 36082175 PMCID: PMC9445170 DOI: 10.1038/s43856-022-00172-x] [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: 11/09/2021] [Accepted: 08/04/2022] [Indexed: 11/09/2022] Open
Abstract
Abstract
Background
Bisphosphonate-related osteonecrosis of the jaw (BRONJ) is a rare but serious side effect of nitrogen-containing bisphosphonate drugs (N-BPs) frequently prescribed to reduce skeletal-related events in bone malignancies and osteoporosis. BRONJ is associated with abnormal oral wound healing after dentoalveolar surgery and tooth extraction. We previously found that N-BP chemisorbed to bone mineral hydroxyapatite was dissociated by secondary applied N-BP. This study investigated the effect of the surface equilibrium-based removal of N-BP from jawbone on tooth extraction wound healing of zoledronate (ZOL)-treated mice.
Methods
A pharmacologically inactive N-BP derivative (the 4-pyridyl isomer of risedronate equipped with a near-infrared 800CW fluorescent imaging dye, 800CW-pRIS) was designed and synthesized. 800CW-pRIS was intra-orally injected or topically applied in a deformable nano-scale vesicle formulation (DNV) to the palatal tissue of mice pretreated with ZOL, a potent N-BP. The female C56BL6/J mice were subjected to maxillary molar extraction and oral wound healing was compared for 800CW-pRIS/ZOL, ZOL and untreated control groups.
Results
800CW-pRIS is confirmed to be inactive in inhibiting prenylation in cultured osteoclasts while retaining high affinity for hydroxyapatite. ZOL-injected mice exhibit delayed tooth extraction wound healing with osteonecrosis relative to the untreated controls. 800CW-pRIS applied topically to the jaw one week before tooth extraction significantly reduces gingival oral barrier inflammation, improves extraction socket bone regeneration, and prevents development of osteonecrosis in ZOL-injected mice.
Conclusions
Topical pre-treatment with 800CW-RIS in DNV is a promising approach to prevent the complication of abnormal oral wound healing associated with BRONJ while retaining the anti-resorptive benefit of legacy N-BP in appendicular or vertebrate bones.
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14
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Yan R, Jiang R, Hu L, Deng Y, Wen J, Jiang X. Establishment and assessment of rodent models of medication-related osteonecrosis of the jaw (MRONJ). Int J Oral Sci 2022; 14:41. [PMID: 35948539 PMCID: PMC9365764 DOI: 10.1038/s41368-022-00182-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 05/21/2022] [Accepted: 05/24/2022] [Indexed: 11/26/2022] Open
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is primarily associated with administering antiresorptive or antiangiogenic drugs. Despite significant research on MRONJ, its pathogenesis and effective treatments are still not fully understood. Animal models can be used to simulate the pathophysiological features of MRONJ, serving as standardized in vivo experimental platforms to explore the pathogenesis and therapies of MRONJ. Rodent models exhibit excellent effectiveness and high reproducibility in mimicking human MRONJ, but classical methods cannot achieve a complete replica of the pathogenesis of MRONJ. Modified rodent models have been reported with improvements for better mimicking of MRONJ onset in clinic. This review summarizes representative classical and modified rodent models of MRONJ created through various combinations of systemic drug induction and local stimulation and discusses their effectiveness and efficiency. Currently, there is a lack of a unified assessment system for MRONJ models, which hinders a standard definition of MRONJ-like lesions in rodents. Therefore, this review comprehensively summarizes assessment systems based on published peer-review articles, including new approaches in gross observation, histological assessments, radiographic assessments, and serological assessments. This review can serve as a reference for model establishment and evaluation in future preclinical studies on MRONJ.
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Affiliation(s)
- Ran Yan
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,College of Stomatology, Shanghai Jiao Tong University, Shanghai, China.,National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China
| | - Ruixue Jiang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,College of Stomatology, Shanghai Jiao Tong University, Shanghai, China.,National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China
| | - Longwei Hu
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China.,National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.,Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yuwei Deng
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,College of Stomatology, Shanghai Jiao Tong University, Shanghai, China.,National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China
| | - Jin Wen
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China. .,College of Stomatology, Shanghai Jiao Tong University, Shanghai, China. .,National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.
| | - Xinquan Jiang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China. .,College of Stomatology, Shanghai Jiao Tong University, Shanghai, China. .,National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.
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15
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Wang Z, Hu J, Faber J, Miszuk J, Sun H. Locally Delivered Metabolite Derivative Promotes Bone Regeneration in Aged Mice. ACS APPLIED BIO MATERIALS 2022; 5:3281-3289. [PMID: 35737928 DOI: 10.1021/acsabm.2c00263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Repair of large bone defects is still a major challenge, especially for the aged population. One alternative to address this issue is using the biomaterial-mediated bone morphogenetic protein 2 (BMP2) delivery technique, although high-dose BMP2 can cause serious concerns. α-Ketoglutarate (AKG) is a key intermediate in the tricarboxylic acid cycle and emerging as an intriguing antiaging molecule to extend the life/health span in different organisms. While one recent study indicates that the dietary AKG could significantly reduce bone loss and improve bone anabolism in aged mice, the therapeutic potential of AKG for bone regeneration has not been studied so far. Moreover, the poor cell permeability, large dose requirement, and long-term systemic administration of AKG hinder its applications in clinics and cellular mechanism studies. Dimethyl α-ketoglutarate (DMAKG) is a cell-permeable derivative of AKG with promising potential, although its role in osteogenesis is still elusive. Therefore, we aim to study the potential roles of DMAKG for bone regeneration using both in vitro cell culture and in vivo aged mouse models. Compared to AKG, our data indicated that DMAKG could more effectively improve osteoblastic differentiation. In addition, DMAKG significantly reduced adipogenic differentiation and improved osteogenic differentiation of a mouse multipotential mesenchymal stem cell line. Importantly, our result indicated that DMAKG significantly promoted BMP2-induced osteoblastic differentiation and mineralization in vitro. Moreover, DMAKG could not only significantly mitigate lipopolysaccharide (LPS)-stimulated inflammation in macrophages but also largely rescue LPS-inhibited osteoblastic differentiation. Consistently, our in vivo study demonstrated that gelatin scaffold-mediated local release of DMAKG significantly promoted BMP2-induced bone regeneration in aged mice, which is compromised by chronic inflammation and high adipogenesis. Overall, we, for the first time, report that locally delivered metabolite derivative, DMAKG, could improve BMP2-induced bone regeneration in aged mice. Our study suggests DMAKG has a promising therapeutic potential for bone regeneration through modulating local inflammation and stem cell differentiation.
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Affiliation(s)
- Zhuozhi Wang
- Department of Oral and Maxillofacial Surgery, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States.,Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States
| | - Jue Hu
- Department of Oral and Maxillofacial Surgery, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States.,Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States
| | - Jessica Faber
- Department of Oral and Maxillofacial Surgery, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States.,Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States.,Department of Biomedical Engineering, University of Iowa College of Engineering, Iowa City, Iowa 52242, United States
| | - Jacob Miszuk
- Department of Oral and Maxillofacial Surgery, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States.,Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States
| | - Hongli Sun
- Department of Oral and Maxillofacial Surgery, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States.,Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, Iowa 52242, United States.,Department of Biomedical Engineering, University of Iowa College of Engineering, Iowa City, Iowa 52242, United States
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16
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Lorenzo-Pouso AI, Bravo SB, Carballo J, Del Pilar Chantada-Vázquez M, Bagán J, Bagán L, Chamorro-Petronacci CM, Conde-Amboage M, López-López R, García-García A, Pérez-Sayáns M. Quantitative proteomics in medication-related osteonecrosis of the jaw: a proof-of-concept study. Oral Dis 2022. [PMID: 35377498 DOI: 10.1111/odi.14201] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 03/23/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Medication-related osteonecrosis of the jaw (MRONJ) is a paradoxical effect associated with bone modifying agents (BMAs) and other drugs. Currently no valuable diagnostic or prognosis biomarkers exist. This goal of this research was to study MRONJ related salivary proteome. MATERIALS AND METHODS This case-control aimed to study salivary proteome in MRONJ versus control groups i) formed from BMAs consumers and ii) healthy individuals to unravel biomarkers. 38 samples of unstimulated whole saliva (18 MRONJ patients, 10 BMA consumers, and 10 healthy controls) were collected. Proteomic analysis by SWATH-MS coupled to bioinformatics analysis was executed. RESULTS 586 proteins were identified, 175 proteins showed significant differences among MRONJ versus controls. SWATH-MS revealed differentially expressed proteins among three groups, which have never isolated. These proteins had distinct roles including cell envelope organization, positive regulation of vesicle fusion, positive regulation of receptor binding, or regulation of low-density lipoprotein particle clearance. Integrative analysis prioritised 3 proteins (MMP9, AACT and HBD). Under receiver operating characteristic analysis, this panel discriminated MRONJ with a sensitivity of 90% and a specificity of 78.9%. CONCLUSION These findings may inform of a novel biomarker panel for MRONJ prediction or diagnosis. Nonetheless, further research is needed to validate this panel.
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Affiliation(s)
- Alejandro I Lorenzo-Pouso
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Spain
| | - Susana B Bravo
- Proteomic Unit, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela, Spain
| | - Javier Carballo
- Department of Food Technology, Faculty of Sciences, University of Vigo-Ourense Campus, Spain
| | - María Del Pilar Chantada-Vázquez
- Proteomic Unit, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela, Spain
| | - José Bagán
- Department of Stomatology and Maxillofacial Surgery, University General Hospital of Valencia, Spain
| | - Leticia Bagán
- Department of Stomatology and Maxillofacial Surgery, University General Hospital of Valencia, Spain
| | - Cintia M Chamorro-Petronacci
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Spain
| | - Mercedes Conde-Amboage
- Models of Optimization, Decision, Statistics and Applications Reseach Group (MODESTYA), Department of Statistics, Mathematical Analysis and Optimization, University of Santiago de Compostela, Spain
| | - Rafael López-López
- Translational Medical Oncology Group (Oncomet), Health Research Institute of Santiago (IDIS), University Hospital Complex of Santiago de Compostela (SERGAS), Spain
| | - Abel García-García
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Spain
| | - Mario Pérez-Sayáns
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Spain
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17
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Aminoshariae A, Donaldson M, Horan M, Mackey SA, Kulild JC, Baur D. Emerging antiresorptive medications and their potential implications for dental surgeries. J Am Dent Assoc 2022; 153:649-658. [DOI: 10.1016/j.adaj.2021.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/20/2021] [Accepted: 12/30/2021] [Indexed: 11/16/2022]
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18
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Treister NS, Brennan MT, Sollecito TP, Schmidt BL, Patton LL, Mitchell R, Haddad RI, Tishler RB, Shadick R, Hodges JS, Lalla RV, Lalla RV. Exposed bone in patients with head and neck cancer treated with radiation therapy: An analysis of the Observational Study of Dental Outcomes in Head and Neck Cancer Patients (OraRad). Cancer 2022; 128:487-496. [PMID: 34665873 PMCID: PMC8776577 DOI: 10.1002/cncr.33948] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/30/2021] [Accepted: 08/10/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Patients with head and neck cancer (HNC) treated with radiation therapy (RT) are at risk for jaw osteoradionecrosis (ORN), which is largely characterized by the presence of exposed necrotic bone. This report describes the incidence and clinical course of and risk factors for exposed intraoral bone in the multicenter Observational Study of Dental Outcomes in Head and Neck Cancer Patients (OraRad) cohort. METHODS Participants were evaluated before RT and at 6, 12, 18, and 24 months after RT. Exposed bone was characterized by location, sequestrum formation, and other associated features. The radiation dose to the affected area was determined, and the history of treatment for exposed bone was recorded. RESULTS The study enrolled 572 participants; 35 (6.1%) were diagnosed with incident exposed bone at 6 (47% of reports), 12 (24%), 18 (20%), and 24 months (8%), with 60% being sequestrum and with 7 cases (20%) persisting for >6 months. The average maximum RT dose to the affected area of exposed bone was 5456 cGy (SD, 1768 cGy); the most frequent associated primary RT sites were the oropharynx (42.9%) and oral cavity (31.4%), and 76% of episodes occurred in the mandible. The diagnosis of ORN was confirmed in 18 participants for an incidence rate of 3.1% (18 of 572). Risk factors included pre-RT extractions (P = .008), a higher RT dose (P = .039), and tobacco use (P = .048). CONCLUSIONS The 2-year incidence of exposed bone in the OraRad cohort was 6.1%; the incidence of confirmed ORN was 3.1%. Exposed bone after RT for HNC is relatively uncommon and, in most cases, is a short-term complication, not a recurring or persistent one.
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Affiliation(s)
- Nathaniel S. Treister
- Division of Oral Medicine and Dentistry, Brigham and Women’s Hospital, 1620 Tremont Street, 3 Floor, Boston, MA 02120, USA. Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA
| | - Michael T. Brennan
- Department of Oral Medicine, Atrium Health’s Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28203, USA
| | - Thomas P. Sollecito
- Department of Oral Medicine, University of Pennsylvania School of Dental Medicine, 240 South 40th Street, Philadelphia, PA 19104, USA. Division of Oral Medicine, University of Pennsylvania Health System, 3400 Civic Center Blvd, Philadelphia, PA 19104, USA
| | - Brian L. Schmidt
- Department of Oral & Maxillofacial Surgery and Bluestone Center for Clinical Research, New York University College of Dentistry, 421 First Avenue, New York, New York 10010, USA
| | - Lauren L. Patton
- Division of Craniofacial and Surgical Care, Adams School of Dentistry, University of North Carolina, CB 7450, Chapel Hill, NC, USA
| | - Rebecca Mitchell
- Division of Biostatistics, School of Public Health, University of Minnesota, 2221 University Ave SE Suite 200, Minneapolis, MN 55414, USA
| | - Robert I. Haddad
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Roy B. Tishler
- Department of Radiation Oncology, Dana-Farber Cancer Institute/Brigham & Women’s Hospital, 450 Brookline Ave, Boston, MA 02215, United States
| | - Ryann Shadick
- Division of Oral Medicine and Dentistry, Brigham and Women’s Hospital, 1620 Tremont Street, 3rd Floor, Boston, MA 02120, USA
| | - James S. Hodges
- Division of Biostatistics, School of Public Health, University of Minnesota, 2221 University Ave SE Suite 200, Minneapolis, MN 55414, USA
| | - Rajesh V. Lalla
- Section of Oral Medicine, MC3912, University of Connecticut Health, 263 Farmington Avenue, Farmington, CT 06030-3912, USA
| | - Rajesh V Lalla
- Section of Oral Medicine, University of Connecticut Health, Farmington, Connecticut
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19
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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: 10] [Impact Index Per Article: 3.3] [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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Lorenzo-Pouso AI, Castelo-Baz P, Rodriguez-Zorrilla S, Pérez-Sayáns M, Vega P. Association between periodontal disease and inflammatory bowel disease: a systematic review and meta-analysis. Acta Odontol Scand 2021; 79:344-353. [PMID: 33370548 DOI: 10.1080/00016357.2020.1859132] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE The aim of this systematic review was to investigate the association between periodontal disease (PD) and inflammatory bowel disease (IBD), and its two major forms Crohn's disease (CD) and ulcerative colitis (UC). MATERIALS AND METHODS We searched articles in PubMed/MEDLINE, Web of Science, and LILACS published until March 2020. Observational studies evaluating the coexistence of PD in IBD and reported values of clinical periodontal parameters, or radiographic bone loss; and IBD diagnosis established by clinical, radiological, endoscopic and histological criteria were deemed eligible. RESULTS A total of 9 studies were included (33,216 individuals). Only one study reported longitudinal data on IBDs onset in patients with PD. Several case-control studies reported coexistence. Meta-analysis showed that the presence of PD was associated with IBD (2.78 [95%CI 1.36-5.69]). PD was strongly associated both with CD (3.41 [95%CI 1.36-8.56]) and UC (3.98 [95%CI 2.02-7.87]). CONCLUSION This review presents clear evidence for an association between PD and IBDs. Future studies should avoid non-longitudinal designs and focus on addressing direction. PD screening may be included in the multidisciplinary management of IBD patients. The mere theoretical possibility that PD may predispose to IBDs may be of key significance due to the rising incidence of diseases.
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Affiliation(s)
- Alejandro I. Lorenzo-Pouso
- Faculty of Medicine and Odontology, Oral Medicine, Oral Surgery and Implantology Unit, University of Santiago de Compostela, Santiago de Compostela, Spain
- MedOralRes Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Pablo Castelo-Baz
- Department of Endodontics, Faculty of Medicine and Odontology, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Samuel Rodriguez-Zorrilla
- Faculty of Medicine and Odontology, Oral Medicine, Oral Surgery and Implantology Unit, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Mario Pérez-Sayáns
- Faculty of Medicine and Odontology, Oral Medicine, Oral Surgery and Implantology Unit, University of Santiago de Compostela, Santiago de Compostela, Spain
- MedOralRes Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Pablo Vega
- Gastroenterology Department, Complexo Hospitalario Universitario de Ourense, Ourense, Spain
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Kawahara M, Kuroshima S, Sawase T. Clinical considerations for medication-related osteonecrosis of the jaw: a comprehensive literature review. Int J Implant Dent 2021; 7:47. [PMID: 33987769 PMCID: PMC8119587 DOI: 10.1186/s40729-021-00323-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/17/2021] [Indexed: 12/16/2022] Open
Abstract
Background Medication-related osteonecrosis of the jaw (MRONJ), which was first reported as bisphosphonate-related osteonecrosis of the jaw (BRONJ) in bisphosphonate users, is a rare but severe soft and hard tissue disease induced by several types of medications. There has been a deluge of information about MRONJ, such as epidemiology, risk factors, clinical recommendations for dental treatment to prevent it, and treatment strategies in medication-prescribed users. The aim of this study was to comprehensively review recent articles and provide the current scientific information about MRONJ, especially clinical considerations or recommendations for dental treatment to prevent its occurrence. Materials and methods The current literature review was mainly based on 14 systematic reviews with or without meta-analysis, 4 position papers, 1 consensus statement, 1 clinical guideline, and 2 clinical reviews regarding MRONJ after a PubMed database and manual searches according to inclusion and exclusion criteria. Moreover, 53 articles were selected by manual search in regard to all references from selected articles and other articles identified on the PubMed search, irrespective of publication date, and inclusion and exclusion criteria. Results The incidence and prevalence of MRONJ are relatively low, although they are clearly higher in cancer patients receiving high-dose antiresorptive agents or angiogenesis inhibitors rather than osteoporosis patients receiving oral bisphosphonates or denosumab. There are many types of local, systemic, and other risk factors for the development of MRONJ. Clinical recommendations are provided for each clinical situation of patients to prevent MRONJ. There are also treatment strategies for MRONJ in each stage. Conclusions General dentists should perform appropriate dental treatment to prevent MRONJ in the patients prior to or when receiving medications that could induce MRONJ. Moreover, there are treatment strategies for MRONJ in each stage that oral surgeons could follow. Adequate and updated clinical information regarding MRONJ based on scientific data is required whenever possible.
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Affiliation(s)
- Mampei Kawahara
- Oral & Maxillofacial Implant Center, Nagasaki University Hospital, 852-8588, Nagasaki, Japan
| | - Shinichiro Kuroshima
- Oral & Maxillofacial Implant Center, Nagasaki University Hospital, 852-8588, Nagasaki, Japan. .,Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan.
| | - Takashi Sawase
- Oral & Maxillofacial Implant Center, Nagasaki University Hospital, 852-8588, Nagasaki, Japan.,Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
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Kün-Darbois JD, Fauvel F. Medication-related osteonecrosis and osteoradionecrosis of the jaws: Update and current management. Morphologie 2020; 105:170-187. [PMID: 33281055 DOI: 10.1016/j.morpho.2020.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/12/2020] [Accepted: 11/14/2020] [Indexed: 12/19/2022]
Abstract
Medication related osteonecrosis of the jaws (MRONJ) and osteoradionecrosis of the jaws (ORNJ) are two different diseases of quite similar appearance. MRONJ is mainly due to antiresorptive or antiangiogenic drug therapy and ORNJ to radiotherapy. The present work aimed at presenting and comparing the current knowledge on MRONJ and ORNJ. They both present as an exposure of necrotic bone and differ in some clinical or radiological characteristics, clinical course and mostly in treatment. They share similar risk factors. A tooth extraction is more frequently found as a triggering factor in MRONJ. The frequency of a maxillary localisation seems higher for MRONJ. On computed tomographic images, a periosteal reaction seems characteristic of MRONJ. More frequent pathological fractures seem to occur in ORNJ. It is mandatory, for ORNJ diagnosis, to exclude a residual or recurrent tumour using histological examination. Both MRONJ and ORNJ are challenging to treat and cannot be managed similarly. For both, it would still be worth to optimise awareness within the medical community, patients' oral hygiene and dental cares to improve their prevention and make their incidences decrease. Conservative therapy is more frequently achieved for MRONJ than ORNJ and surgical resection is more often performed for ORNJ. For both diseases, the last treatment possible in refractory cases is a surgical extensive resection with free flap reconstruction. A MRONJ classification is widely used today, whereas no consensus exists to date for ORNJ classification. We propose a classification that could play this role.
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Affiliation(s)
- J-D Kün-Darbois
- Department of oral and maxillofacial surgery, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex, France; Groupe études remodelage osseux et bioMatériaux, GEROM, SFR 4208, UNIV Angers, IRIS-IBS institut de biologie en Santé, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex, France.
| | - F Fauvel
- Department of oral and maxillofacial surgery, CHU de Nantes, 1, place Alexis-Ricordeau, 44093 Nantes cedex 1, France; Department of oral and maxillofacial surgery, CH de Saint-Nazaire, 11, boulevard Georges-Charpak, 44606 Saint-Nazaire cedex, France
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Ristow O, Nehrbass D, Zeiter S, Arens D, Moratin J, Pautke C, Hoffmann J, Freudlsperger C, Otto S. Differences between auto-fluorescence and tetracycline-fluorescence in medication-related osteonecrosis of the jaw-a preclinical proof of concept study in the mini-pig. Clin Oral Investig 2020; 24:4625-4637. [PMID: 32444918 PMCID: PMC7666678 DOI: 10.1007/s00784-020-03332-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/07/2020] [Indexed: 12/16/2022]
Abstract
Objectives Fluorescence-guided bone surgery is a well-established technique in the treatment of medication-related osteonecrosis of the jaw. No histopathological evidence for bone auto-fluorescence is currently available, and thus, any differences from tetracycline-fluorescence remain unclear. Therefore, the goals of this study were to find out if macroscopic and histological differences occur between the auto- and tetracycline-fluorescence in the delineation of viable and necrotic jawbone in the mini-pig. Materials and methods According to the proof of concept, osteonecrosis was provoked in eight Göttingen minipigs. Pigs were divided into two groups (AF group: no fluorochrome label; TF group: tetracycline label). Delineation of necrosis and viable bone was evaluated in vivo and in vitro macro−/microscopically, correlated to fluorescence properties and compared between the two study groups. Results No macroscopic and microscopic clinical differences were seen in fluorescence between the AF and TF groups. Macroscopic and microscopic viable bone fluoresced green, whereas necrotic bone showed no or only pale fluorescence in both groups. The auto-fluorescence was attributable to the arrangements and structure of collagen and the cell-filled bone lacunae. Conclusion Neither in vivo nor in vitro macroscopically differences are apparent between the auto-fluorescence and the tetracycline-fluorescence of bone. The auto-fluorescence is attributable to the arrangements and structure of collagen and the cell-filled bone lacunae. Tetracycline-fluorescence is a mixture of tetracycline (at the bone edges with increased bone formation) and large components of auto-fluorescence. Clinical relevance Because auto-fluorescence is easy to apply, reproducible, and does not rely on the subjective impression of the surgeon, it promises to be an important standardized alternative to tetracycline-labeled MRONJ therapy.
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Affiliation(s)
- Oliver Ristow
- Department of Oral and Maxillofacial Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 400, D-69120, Heidelberg, Germany.
| | - Dirk Nehrbass
- AO Research Institute Davos, Clavadelerstr. 8, 7270, Davos, Switzerland
| | - Stephan Zeiter
- AO Research Institute Davos, Clavadelerstr. 8, 7270, Davos, Switzerland
| | - Daniel Arens
- AO Research Institute Davos, Clavadelerstr. 8, 7270, Davos, Switzerland
| | - Julius Moratin
- Department of Oral and Maxillofacial Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 400, D-69120, Heidelberg, Germany
| | - Christoph Pautke
- Department of Oral and Maxillofacial Surgery, Ludwig-Maximilians University of Munich, Lindwurmstr. 2a, D-80336, Munich, Germany
| | - Jürgen Hoffmann
- Department of Oral and Maxillofacial Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 400, D-69120, Heidelberg, Germany
| | - Christian Freudlsperger
- Department of Oral and Maxillofacial Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 400, D-69120, Heidelberg, Germany
| | - Sven Otto
- Department of Oral and Maxillofacial Surgery, Ludwig-Maximilians University of Munich, Lindwurmstr. 2a, D-80336, Munich, Germany
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