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Mosaddad SA, Talebi S, Keyhan SO, Fallahi HR, Darvishi M, Aghili SS, Tavahodi N, Namanloo RA, Heboyan A, Fathi A. Dental implant considerations in patients with systemic diseases: An updated comprehensive review. J Oral Rehabil 2024; 51:1250-1302. [PMID: 38570927 DOI: 10.1111/joor.13683] [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: 03/30/2023] [Revised: 10/27/2023] [Accepted: 03/02/2024] [Indexed: 04/05/2024]
Abstract
BACKGROUND Various medical conditions and the drugs used to treat them have been shown to impede or complicate dental implant surgery. It is crucial to carefully monitor the medical status and potential post-operative complications of patients with systemic diseases, particularly elderly patients, to minimize the risk of health complications that may arise. AIM The purpose of this study was to review the existing evidence on the viability of dental implants in patients with systemic diseases and to provide practical recommendations to achieve the best possible results in the corresponding patient population. METHODS The information for our study was compiled using data from PubMed, Scopus, Web of Science and Google Scholar databases and searched separately for each systemic disease included in our work until October 2023. An additional manual search was also performed to increase the search sensitivity. Only English-language publications were included and assessed according to titles, abstracts and full texts. RESULTS In total, 6784 studies were found. After checking for duplicates and full-text availability, screening for the inclusion criteria and manually searching reference lists, 570 articles remained to be considered in this study. CONCLUSION In treating patients with systemic conditions, the cost-benefit analysis should consider the patient's quality of life and expected lifespan. The success of dental implants depends heavily on ensuring appropriate maintenance therapy, ideal oral hygiene standards, no smoking and avoiding other risk factors. Indications and contraindications for dental implants in cases of systemic diseases are yet to be more understood; broader and hardcore research needs to be done for a guideline foundation.
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Affiliation(s)
- Seyed Ali Mosaddad
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
- Department of Conservative Dentistry and Bucofacial Prosthesis, Faculty of Odontology, Complutense University of Madrid, Madrid, Spain
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
- Maxillofacial Surgery & Implantology & Biomaterial Research Foundation, Tehran, Iran
| | - Sahar Talebi
- Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Seied Omid Keyhan
- Maxillofacial Surgery & Implantology & Biomaterial Research Foundation, Tehran, Iran
- Department of Oral & Maxillofacial Surgery, Gangneung-Wonju National University, Gangneung, South Korea
- Department of Oral & Maxillofacial Surgery, College of Medicine, University of Florida, Jacksonville, FL, USA
- Iface Academy, Istanbul, Turkey
| | - Hamid Reza Fallahi
- Maxillofacial Surgery & Implantology & Biomaterial Research Foundation, Tehran, Iran
- Department of Oral & Maxillofacial Surgery, Gangneung-Wonju National University, Gangneung, South Korea
- Department of Oral & Maxillofacial Surgery, College of Medicine, University of Florida, Jacksonville, FL, USA
- Iface Academy, Istanbul, Turkey
| | - Mohammad Darvishi
- Faculty of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Seyedeh Sara Aghili
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Narges Tavahodi
- Student Research Committee, Faculty of Dentistry, Mazandaran University of Medical Sciences, Sari, Iran
| | | | - Artak Heboyan
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
- Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
- Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Amirhossein Fathi
- Department of Prosthodontics, Dental Materials Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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Prado-Pena IB, Somoza-Martin JM, García-Carnicero T, Lorenzo-Pouso AI, Pérez-Sayáns M, Sanmartín-Barragáns V, Blanco-Carrión A, García-García A, Gándara-Vila P. Osseointegrated dental implants that will undergo radiotherapy. Does risk of osteoradionecrosis exist? A scoping review. Oral Surg Oral Med Oral Pathol Oral Radiol 2024:S2212-4403(24)00323-7. [PMID: 39142935 DOI: 10.1016/j.oooo.2024.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/27/2024] [Accepted: 06/01/2024] [Indexed: 08/16/2024]
Abstract
OBJECTIVE Given the absence of a standardized action protocol for treating patients with dental implants (DIs) who are subjected to radiotherapy (RT), we have conducted an extensive review and analysis of published literature on this subject. Our objective is to gain a comprehensive understanding of the impact of RT on the bone surrounding osseointegrated implants during and after treatment. STUDY DESIGN We conducted a literature review using PubMed (MEDLINE) to identify studies describing the effects of RT on preexisting osseointegrated and/or loaded DIs. Articles published between January 1963 and December 2023 were considered for inclusion. RESULTS A total of 1,126 articles were retrieved, 64 full articles were reviewed, and only 13 articles were included in this review upon meeting the criteria. A total of 667 patients and 2,409 implants were included. Osteoradionecrosis (ORN) was observed in approximately 19 implants following antineoplastic treatment. CONCLUSIONS The interaction between DIs and RT is a complex and multifaceted issue that requires further research and clinical guidance. Although certain studies indicate a possible connection between DIs, radiation, and ORN risk, the precise relationship remains unclear. Factors such as radiation dosage, implant characteristics, material, and timing of placement significantly influence this association.
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Affiliation(s)
- Irene Beatriz Prado-Pena
- Oral Medicine, Oral Surgery, and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Jose Manuel Somoza-Martin
- Oral Medicine, Oral Surgery, and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago (IDIS), ORALRES Group Santiago de Compostela, Santiago de Compostela, Spain.
| | - Tamara García-Carnicero
- Oral Medicine, Oral Surgery, and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Alejandro I Lorenzo-Pouso
- Oral Medicine, Oral Surgery, and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Mario Pérez-Sayáns
- Oral Medicine, Oral Surgery, and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago (IDIS), ORALRES Group Santiago de Compostela, Santiago de Compostela, Spain; Materials Institute of Santiago de Compostela (iMATUS), Santiago de Compostela, Spain
| | - Valeria Sanmartín-Barragáns
- Oral Medicine, Oral Surgery, and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Andrés Blanco-Carrión
- Oral Medicine, Oral Surgery, and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago (IDIS), ORALRES Group Santiago de Compostela, Santiago de Compostela, Spain
| | - Abel García-García
- Oral Medicine, Oral Surgery, and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago (IDIS), ORALRES Group Santiago de Compostela, Santiago de Compostela, Spain
| | - Pilar Gándara-Vila
- Oral Medicine, Oral Surgery, and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago (IDIS), ORALRES Group Santiago de Compostela, Santiago de Compostela, Spain
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Akyol O, Olgar T, Toklu T, Eren H, Dirican B. Dose distrubution evaluation of different dental implants on a real human dry-skull model for head and neck cancer radiotherapy. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Printzell L, Reseland JE, Edin NFJ, Ellingsen JE. Effects of ionizing irradiation and interface backscatter on human mesenchymal stem cells cultured on titanium surfaces. Eur J Oral Sci 2019; 127:500-507. [PMID: 31322296 DOI: 10.1111/eos.12654] [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] [Accepted: 06/14/2019] [Indexed: 12/28/2022]
Abstract
Radiotherapy to the head and neck region negatively influences the osseointegration and survival of dental implants. The effects of cobalt 60 (60 Co) ionizing radiation and the impact of backscatter rays were investigated on human mesenchymal stem cells cultured on titanium surfaces. Bone marrow-derived human mesenchymal stem cells were seeded on titanium (Ti), fluoride-modified titanium (TiF), and tissue culture plastic. Cells were exposed to ionizing γ-radiation in single doses of 2, 6, or 10 Gy using a 60 Co source. Density and distribution of cells were evaluated using confocal laser-scanning microscopy, 21 d post-irradiation. Lactate dehydrogenase concentration and the levels of total protein and cytokines/chemokines were measured in the cell-culture medium on days 1, 3, 7, 14, and 21 post-irradiation. Unirradiated cells were used as the control. Irradiation had no effect on cell viability, collagen and actin expression, or cell distribution, but induced an initial increase in the secretion of interleukin (IL)-6, IL-8, monocyte chemotactic protein 1 (MCP-1), and vascular endothelial growth factor (VEGF), followed by a decrease in secretion after 3 or 7 d. Irradiation resulted in secretion of a lower amount of all analytes examined compared with controls on day 21, irrespective of radiation dose and growth surface. Backscattering from titanium did not influence the cell response significantly, suggesting a clinical potential for achieving successful osseointegration of dental implants placed before radiotherapy.
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Affiliation(s)
- Lisa Printzell
- Department of Prosthodontics, Faculty for Dentistry, Institute of Clinical Dentistry, University of Oslo, Oslo, Norway
| | - Janne E Reseland
- Department of Biomaterials, Faculty for Dentistry, Institute of Clinical Dentistry, University of Oslo, Oslo, Norway
| | - Nina F J Edin
- Department of Physics, Faculty of Mathematics and Natural Science, University of Oslo, Oslo, Norway
| | - Jan E Ellingsen
- Department of Prosthodontics, Faculty for Dentistry, Institute of Clinical Dentistry, University of Oslo, Oslo, Norway
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Tibau AV, Grube BD, Velez BJ, Vega VM, Mutter J. Titanium exposure and human health. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/osi2.1001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Anita V. Tibau
- Center for Environmental and Toxicological ResearchUniversity of Puerto Rico Newport Beach California
| | - Blanche D. Grube
- Grube is the International Academy of Biological Dentistry & Medicine (IABDM) Scranton Pennsylvania
| | - Braulio J. Velez
- Department of BiochemistryUniversity of Puerto RicoMedical Sciences CampusSchool of Medicine San Juan Puerto Rico
| | - Victor M. Vega
- Universidad Central del Caribe School of MedicineBayamon San Juan Puerto Rico
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Akyol O, Dirican B, Toklu T, Eren H, Olgar T. Investigating the effect of dental implant materials with different densities on radiotherapy dose distribution using Monte-Carlo simulation and pencil beam convolution algorithm. Dentomaxillofac Radiol 2019; 48:20180267. [PMID: 30663343 DOI: 10.1259/dmfr.20180267] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The aim of this study was to investigate the effect of dental implant materials with different physical densities on dose distribution for head and neck cancer radiotherapy planning. METHODS Titanium (Ti), Titanium alloy (Ti-6Al-4V), Zirconia (Y-TZP), Zirconium oxide (ZrO2), Alumina (Al2O3) and polyetheretherketone (PEEK) dental implant materials were used for determination of implant material effect on dose distribution. Dental implant effect was investigated by using pencil beam convolution (PBC) algorithm of Eclipse treatment planning systems (TPS) and Monte Carlo (MC) simulation technique. 6 MV photon beam of the Varian 2300 C/D linear accelerator was simulated by EGSnrc-based BEAMnrc MC code system. RESULTS Reasonable consistency was determined for percentage depth dose (PDD) curves between MC simulation and water phantom measurements at 6.4 MeV initial electron energy. The consistency between modelled linear accelerator PDD curve calculations and water-phantom PDD measurements were compatible within 1 % range. The dose increase in front of the dental implant calculated by MC simulation is in the range of 0.4-20.2%. We found by MC and PBC calculations that the differences in dose increase in front of the dental implant materials is in the range of 0.1-17.2% and is dependent on the physical density of the dental implant. CONCLUSIONS Dose increase for Zirconia was noted to be maximum while PEEK implant dose increase was minimum among the whole dental implant materials studied. This study revealed that the Eclipse TPS PBC algorithm could not accurately estimate the backscatter radiation from dental implant materials.
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Affiliation(s)
- Oya Akyol
- 1 Department Radiation Oncology, Faculty of Medicine, Gazi University , Ankara , Turkey
| | - Bahar Dirican
- 2 Radiation Oncology Department, Gülhane Faculty of Medicine, Health Sciences University , Ankara , Turkey
| | - Turkay Toklu
- 3 Department of Nuclear Medicine, Faculty of Medicine, Yeditepe University , Istanbul , Turkey
| | - Hakan Eren
- 4 Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University , Ankara , Turkey
| | - Turan Olgar
- 5 Faculty of Engineering, Department of Physics Engineering, Ankara University , Ankara , Turkey
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Wetzels JWGH, Meijer GJ, Koole R, Adang EM, Merkx MAW, Speksnijder CM. Costs and clinical outcomes of implant placement during ablative surgery and postponed implant placement in curative oral oncology: a five-year retrospective cohort study. Clin Oral Implants Res 2017; 28:1433-1442. [DOI: 10.1111/clr.13008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/09/2017] [Indexed: 11/26/2022]
Affiliation(s)
- Jan-Willem G. H. Wetzels
- Department of Oral and Maxillofacial Surgery; Radboud University Medical Center; Nijmegen The Netherlands
- Department of Oral and Maxillofacial Surgery and Special Dental Care; University Medical Center Utrecht; Utrecht The Netherlands
| | - Gert J. Meijer
- Department of Oral and Maxillofacial Surgery; Radboud University Medical Center; Nijmegen The Netherlands
| | - Ron Koole
- Department of Oral and Maxillofacial Surgery and Special Dental Care; University Medical Center Utrecht; Utrecht The Netherlands
| | - Eddy M. Adang
- Section Biostatistics; Department for Health Evidence; Radboud University Medical Center; Nijmegen The Netherlands
| | - Matthias A. W. Merkx
- Department of Oral and Maxillofacial Surgery; Radboud University Medical Center; Nijmegen The Netherlands
| | - Caroline M. Speksnijder
- Department of Oral and Maxillofacial Surgery; Radboud University Medical Center; Nijmegen The Netherlands
- Department of Oral and Maxillofacial Surgery and Special Dental Care; University Medical Center Utrecht; Utrecht The Netherlands
- Julius Center Sciences; University Medical Center Utrecht; Utrecht The Netherlands
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Teramoto Y, Kurita H, Kamata T, Aizawa H, Yoshimura N, Nishimaki H, Takamizawa K. A case of peri-implantitis and osteoradionecrosis arising around dental implants placed before radiation therapy. Int J Implant Dent 2016; 2:11. [PMID: 27747703 PMCID: PMC5005645 DOI: 10.1186/s40729-016-0039-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 03/21/2016] [Indexed: 11/24/2022] Open
Abstract
A little is known about the effect of radiotherapy on the dental implants that have previously been osseointegrated and charged. Here, we reported a case of osteoradionecrosis which arose around dental implants placed before radiation therapy.
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Affiliation(s)
- Yuji Teramoto
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto, 390-8621, Japan.
| | - Hiroshi Kurita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto, 390-8621, Japan
| | - Takahiro Kamata
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto, 390-8621, Japan
| | - Hitoshi Aizawa
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto, 390-8621, Japan
| | - Nobuhiko Yoshimura
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto, 390-8621, Japan
| | - Humihiro Nishimaki
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto, 390-8621, Japan
| | - Kazunobu Takamizawa
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto, 390-8621, Japan
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Wetzels JW, Koole R, Meijer GJ, de Haan AFJ, Merkx MAW, Speksnijder CM. Functional benefits of implants placed during ablative surgery: A 5-year prospective study on the prosthodontic rehabilitation of 56 edentulous oral cancer patients. Head Neck 2016; 38 Suppl 1:E2103-11. [DOI: 10.1002/hed.24389] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2015] [Indexed: 11/09/2022] Open
Affiliation(s)
- Jan Willem Wetzels
- Department of Oral and Maxillofacial Surgery and Special Dental Care; University Medical Center Utrecht; Utrecht The Netherlands
- Department of Oral and Maxillofacial Surgery; Radboud University Medical Center; Nijmegen The Netherlands
| | - Ron Koole
- Department of Oral and Maxillofacial Surgery and Special Dental Care; University Medical Center Utrecht; Utrecht The Netherlands
| | - Gert J. Meijer
- Department of Oral and Maxillofacial Surgery; Radboud University Medical Center; Nijmegen The Netherlands
| | - Anton F. J. de Haan
- Department for Health Evidence, Section Biostatistics; Radboud University Medical Center; Nijmegen The Netherlands
| | - Matthias A. W. Merkx
- Department of Oral and Maxillofacial Surgery; Radboud University Medical Center; Nijmegen The Netherlands
| | - Caroline M. Speksnijder
- Department of Oral and Maxillofacial Surgery and Special Dental Care; University Medical Center Utrecht; Utrecht The Netherlands
- Department of Oral and Maxillofacial Surgery; Radboud University Medical Center; Nijmegen The Netherlands
- Julius Center Sciences; University Medical Center Utrecht; Utrecht The Netherlands
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Kamomae T, Itoh Y, Okudaira K, Nakaya T, Tomida M, Miyake Y, Oguchi H, Shiinoki T, Kawamura M, Yamamoto N, Naganawa S. Dosimetric impact of dental metallic crown on intensity-modulated radiotherapy and volumetric-modulated arc therapy for head and neck cancer. J Appl Clin Med Phys 2016; 17:234-245. [PMID: 26894359 PMCID: PMC5690192 DOI: 10.1120/jacmp.v17i1.5870] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 09/03/2015] [Accepted: 08/30/2015] [Indexed: 12/04/2022] Open
Abstract
Metal dental restoration materials cause dose enhancement upstream and dose disturbance downstream of the high‐density inhomogeneous regions in which these materials are used. In this study, we evaluated the impact of a dental metallic crown (DMC) on intensity‐modulated radiotherapy (IMRT) and volumetric‐modulated arc therapy (VMAT) for head and neck cancer. Additionally, the possibility of sparing the oral mucosa from dose enhancement using an individual intraoral mouthpiece was evaluated. An experimental oral phantom was designed to verify the dosimetric impact of a DMC. We evaluated the effect on single beam, parallel opposing beam, arc beam, IMRT, and VMAT treatment plans. To evaluate the utility of a 3‐mm‐thick intraoral mouthpiece, the doses across the mouthpiece were measured. For single beam irradiation, the measured doses at the entrance and exit planes of the DMC were 51% higher and 21% lower than the calculated dose by the treatment planning system, respectively. The maximum dose enhancements were 22% and 46% for parallel opposing beams and the 90° arc rotation beam, respectively. For IMRT and VMAT, the measured doses adjacent to the DMC were 12.2%±6.3% (mean±1.96 SD) and 12.7%±2.5% higher than the calculated doses, respectively. With regard to the performance of the intraoral mouthpiece for the IMRT and VMAT cases, the disagreement between measured and calculated doses at the outermost surface of the mouthpieces were −2.0%, and 2.0%, respectively. Dose enhancements caused by DMC‐mediated radiation scattering occurred during IMRT and VMAT. Because it is difficult to accurately estimate the dose perturbations, careful consideration is necessary when planning head and neck cancer treatments in patients with DMCs. To spare the oral mucosa from dose enhancement, the use of an individual intraoral mouthpiece should be considered. PACS numbers: 87.55.km, 87.55.N‐, 87.55.Qr
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11
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Dosimetric distribution of the surroundings of different dental crowns and implants during LINAC photon irradiation. Radiat Phys Chem Oxf Engl 1993 2014. [DOI: 10.1016/j.radphyschem.2013.11.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Turunen A, Hukkanen V, Nygårdas M, Kulmala J, Syrjänen S. The combined effects of irradiation and herpes simplex virus type 1 infection on an immortal gingival cell line. Virol J 2014; 11:125. [PMID: 25005804 PMCID: PMC4105526 DOI: 10.1186/1743-422x-11-125] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 07/03/2014] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Oral mucosa is frequently exposed to Herpes simplex virus type 1 (HSV-1) infection and irradiation due to dental radiography. During radiotherapy for oral cancer, the surrounding clinically normal tissues are also irradiated. This prompted us to study the effects of HSV-1 infection and irradiation on viability and apoptosis of oral epithelial cells. METHODS Immortal gingival keratinocyte (HMK) cells were infected with HSV-1 at a low multiplicity of infection (MOI) and irradiated with 2 Gy 24 hours post infection. The cells were then harvested at 24, 72 and 144 hours post irradiation for viability assays and qRT-PCR analyses for the apoptosis-related genes caspases 3, 8, and 9, bcl-2, NFκB1, and viral gene VP16. Mann-Whitney U-test was used for statistical calculations. RESULTS Irradiation improved the cell viability at 144 hours post irradiation (P = 0.05), which was further improved by HSV-1 infection at MOI of 0.00001 (P = 0.05). Simultaneously, the combined effects of infection at MOI of 0.0001 and irradiation resulted in upregulation in NFκB1 (P = 0.05). The combined effects of irradiation and HSV infection also significantly downregulated the expression of caspases 3, 8, and 9 at 144 hours (P = 0.05) whereas caspase 3 and 8 significantly upregulated in non-irradiated, HSV-infected cells as compared to uninfected controls (P = 0.05). Infection with 0.0001 MOI downregulated bcl-2 in non-irradiated cells but was upregulated by 27% after irradiation when compared to non-irradiated infected cells (P = 0.05). Irradiation had no effect on HSV-1 shedding or HSV gene expression at 144 hours. CONCLUSIONS HSV-1 infection may improve the viability of immortal cells after irradiation. The effect might be related to inhibition of apoptosis.
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Affiliation(s)
- Aaro Turunen
- Institute of Dentistry, Department of Oral Pathology, University of Turku, Lemminkäisenkatu 2, 20520 Turku, Finland.
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13
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De Conto C, Gschwind R, Martin E, Makovicka L. Study of dental prostheses influence in radiation therapy. Phys Med 2013; 30:117-21. [PMID: 23583116 DOI: 10.1016/j.ejmp.2013.03.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 12/12/2012] [Accepted: 03/04/2013] [Indexed: 11/27/2022] Open
Abstract
Dental prostheses made of high density material contribute to modify dose distribution in head and neck cancer treatment. Our objective is to quantify dose perturbation due to high density inhomogeneity with experimental measurements and Monte Carlo simulations. Firstly, measurements were carried in a phantom representing a human jaw with thermoluminescent detectors (GR200A) and EBT2 Gafchromic films in the vicinity of three samples: a healthy tooth, a tooth with amalgam and a Ni-Cr crown, irradiated in clinical configuration. Secondly, Monte Carlo simulations (BEAMnrc code) were assessed in an identical configuration. Experimental measurements and simulation results confirm the two well-known phenomena: firstly the passage from a low density medium to a high density medium induces backscattered electrons causing a dose increase at the interface, and secondly, the passage from a high density medium to a low density medium creates a dose decrease near the interface. So, the results show a 1.4% and 23.8% backscatter dose rise and attenuation after sample of 26.7% and 10.9% respectively for tooth with amalgam and crown compared to the healthy tooth. Although a tooth with amalgam has a density of about 12-13, the changes generated are not significant. However, the results for crown (density of 8) are very significant and the discordance observed may be due to calculation point size difference 0.8 mm and 0.25 mm respectively for TLD and Monte Carlo. The use of Monte Carlo simulations and experimental measurements provides objective evidence to evaluate treatment planning system results with metal dental prostheses.
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Affiliation(s)
- C De Conto
- IRMA/LCPR-AC/CE, UMR 6249 CNRS, Université de Franche-Comté, BP 71427, 25211 Montbéliard, France; Centre Hospitalier Belfort Montbéliard, Service d'Oncologie et de Radiothérapie, site du Mittan, 56 boulevard du Maréchal Juin, 25209 Montbéliard, France.
| | - R Gschwind
- IRMA/LCPR-AC/CE, UMR 6249 CNRS, Université de Franche-Comté, BP 71427, 25211 Montbéliard, France.
| | - E Martin
- Centre Hospitalier Belfort Montbéliard, Service d'Oncologie et de Radiothérapie, site du Mittan, 56 boulevard du Maréchal Juin, 25209 Montbéliard, France
| | - L Makovicka
- IRMA/LCPR-AC/CE, UMR 6249 CNRS, Université de Franche-Comté, BP 71427, 25211 Montbéliard, France
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14
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Shimozato T, Igarashi Y, Itoh Y, Yamamoto N, Okudaira K, Tabushi K, Obata Y, Komori M, Naganawa S, Ueda M. Scattered radiation from dental metallic crowns in head and neck radiotherapy. Phys Med Biol 2011; 56:5525-34. [PMID: 21813962 DOI: 10.1088/0031-9155/56/17/005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We aimed to estimate the scattered radiation from dental metallic crowns during head and neck radiotherapy by irradiating a jaw phantom with external photon beams. The phantom was composed of a dental metallic plate and hydroxyapatite embedded in polymethyl methacrylate. We used radiochromic film measurement and Monte Carlo simulation to calculate the radiation dose and dose distribution inside the phantom. To estimate dose variations in scattered radiation under different clinical situations, we altered the incident energy, field size, plate thickness, plate depth and plate material. The simulation results indicated that the dose at the incident side of the metallic dental plate was approximately 140% of that without the plate. The differences between dose distributions calculated with the radiation treatment-planning system (TPS) algorithms and the data simulation, except around the dental metallic plate, were 3% for a 4 MV photon beam. Therefore, we should carefully consider the dose distribution around dental metallic crowns determined by a TPS.
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Affiliation(s)
- T Shimozato
- Department of Radiological Technology, Nagoya University School of Health Sciences, 1-1-20 Daikohminami, Higashi-ku, Nagoya, Aichi 461-8673, Japan.
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15
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Shimozato T, Yasui K, Kawanami R, Habara K, Aoyama Y, Tabushi K, Obata Y. Dose distribution near thin titanium plate for skull fixation irradiated by a 4-MV photon beam. J Med Phys 2011; 35:81-7. [PMID: 20589117 PMCID: PMC2884309 DOI: 10.4103/0971-6203.62199] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Revised: 01/18/2010] [Accepted: 02/24/2010] [Indexed: 11/22/2022] Open
Abstract
To investigate the effects of scattered radiation when a thin titanium plate (thickness, 0.05 cm) used for skull fixation in cerebral nerve surgery is irradiated by a 4-MV photon beam. We investigated the dose distribution of radiation inside a phantom that simulates a human head fitted with a thin titanium plate used for post-surgery skull fixation and compared the distribution data measured using detectors, obtained by Monte Carlo (MC) simulations, and calculated using a radiation treatment planning system (TPS). Simulations were shown to accurately represent measured values. The effects of scattered radiation produced by high-Z materials such as titanium are not sufficiently considered currently in TPS dose calculations. Our comparisons show that the dose distribution is affected by scattered radiation around a thin high-Z material. The depth dose is measured and calculated along the central beam axis inside a water phantom with thin titanium plates at various depths. The maximum relative differences between simulation and TPS results on the entrance and exit sides of the plate were 23.1% and – 12.7%, respectively. However, the depth doses do not change in regions deeper than the plate in water. Although titanium is a high-Z material, if the titanium plate used for skull fixation in cerebral nerve surgery is thin, there is a slight change in the dose distribution in regions away from the plate. In addition, we investigated the effects of variation of photon energies, sizes of radiation field and thickness of the plate. When the target to be irradiated is far from the thin titanium plate, the dose differs little from what it would be in the absence of a plate, though the dose escalation existed in front of the metal plate.
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Affiliation(s)
- Tomohiro Shimozato
- Department of Radiological Technology, Nagoya University School of Health Sciences, Higashi-ku, Nagoya, Aichi, Japan
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Binger T, Seifert H, Blass G, Bormann KH, Rücker M. Dose inhomogeneities on surfaces of different dental implants during irradiation with high-energy photons. Dentomaxillofac Radiol 2008; 37:149-53. [DOI: 10.1259/dmfr/29131739] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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