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Wang Y, Cao X, Shen Y, Zhong Q, Huang Y, Zhang Y, Huang Q, Xu C. Osteogenic effect of low-intensity pulsed ultrasound on peri-implant bone: A systematic review and meta-analysis. J Prosthodont Res 2024; 68:215-226. [PMID: 37518333 DOI: 10.2186/jpr.jpr_d_23_00068] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Purpose This study aimed to evaluate the effect of low-intensity pulsed ultrasound (LIPUS) on promoting osseointegration around dental implants.Study selection A comprehensive search was performed on two databases, including MEDLINE (PubMed) and Web of Science to identify relevant studies published before June 1, 2022. Randomized controlled trials that met the inclusion criteria were selected for the study. The year of publication, study design, animal species, number of animals, number of implants, implant position, implant size, intervention, follow-up time, bone volume ratio (BV/TV), bone-implant contact ratio (BIC), and implant removal torque value (RTV) measurements, including mean and SD, were extracted.Results Ten randomized trials were included in this meta-analysis. The results showed that LIPUS significantly promoted osteogenesis around dental implants. Furthermore, in animal models of pre-existing diseases such as osteoporosis and diabetes, LIPUS had the same effect. The included data were divided into subgroups to explore the effects of different follow-up time, acoustic intensities, and frequencies. Results showed that higher acoustic intensities and frequencies significantly improve the osteogenic effects of LIPUS. There was some degree of heterogeneity owing to bias in the included studies. More high-quality randomized controlled trials are necessary in the future.Conclusions LIPUS can promote bone healing around dental implants and is an attractive option for edentulous patients, especially those with pre-existing diseases. Further clinical trials on the use of LIPUS in implant dentistry are warranted. Furthermore, future studies must pay more attention to acoustic intensity and frequency.
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Affiliation(s)
- Yingying Wang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Ximeng Cao
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yingyi Shen
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Qi Zhong
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yujie Huang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yifan Zhang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Qingfeng Huang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Chun Xu
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
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Poudrel AS, Bouffandeau A, Demeet OL, Rosi G, Nguyen VH, Haiat G. Characterization of the concentration of agar-based soft tissue mimicking phantoms by impact analysis. J Mech Behav Biomed Mater 2024; 152:106465. [PMID: 38377641 DOI: 10.1016/j.jmbbm.2024.106465] [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: 06/24/2023] [Revised: 01/14/2024] [Accepted: 02/13/2024] [Indexed: 02/22/2024]
Abstract
In various medical fields, a change of soft tissue stiffness is associated with its physio-pathological evolution. While elastography is extensively employed to assess soft tissue stiffness in vivo, its application requires a complex and expensive technology. The aim of this study is to determine whether an easy-to-use method based on impact analysis can be employed to determine the concentration of agar-based soft tissue mimicking phantoms. Impact analysis was performed on soft tissue mimicking phantoms made of agar gel with a mass concentration ranging from 1% to 5%. An indicator Δt is derived from the temporal variation of the impact force signal between the hammer and a small beam in contact with the sample. The results show a non-linear decrease of Δt as a function of the agar concentration (and thus of the sample stiffness). The value of Δt provides an estimation of the agar concentration with an error of 0.11%. This sensitivity of the impact analysis based method to the agar concentration is of the same order of magnitude than results obtained with elastography techniques. This study opens new paths towards the development of impact analysis for a fast, easy and relatively inexpensive clinical evaluation of soft tissue elastic properties.
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Affiliation(s)
- Anne-Sophie Poudrel
- CNRS, Univ Paris Est Creteil, Univ Gustave Eiffel, UMR 8208, MSME, F-94010 Créteil, France
| | - Arthur Bouffandeau
- CNRS, Univ Paris Est Creteil, Univ Gustave Eiffel, UMR 8208, MSME, F-94010 Créteil, France
| | - Oriane Le Demeet
- CNRS, Univ Paris Est Creteil, Univ Gustave Eiffel, UMR 8208, MSME, F-94010 Créteil, France
| | - Giuseppe Rosi
- Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, UMR 8208, MSME, F-94010 Créteil, France
| | - Vu-Hieu Nguyen
- Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, UMR 8208, MSME, F-94010 Créteil, France
| | - Guillaume Haiat
- CNRS, Univ Paris Est Creteil, Univ Gustave Eiffel, UMR 8208, MSME, F-94010 Créteil, France.
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Rodriguez Betancourt A, Samal A, Chan HL, Kripfgans OD. Overview of Ultrasound in Dentistry for Advancing Research Methodology and Patient Care Quality with Emphasis on Periodontal/Peri-implant Applications. Z Med Phys 2023; 33:336-386. [PMID: 36922293 PMCID: PMC10517409 DOI: 10.1016/j.zemedi.2023.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/20/2022] [Accepted: 01/11/2023] [Indexed: 03/14/2023]
Abstract
BACKGROUND Ultrasound is a non-invasive, cross-sectional imaging technique emerging in dentistry. It is an adjunct tool for diagnosing pathologies in the oral cavity that overcomes some limitations of current methodologies, including direct clinical examination, 2D radiographs, and cone beam computerized tomography. Increasing demand for soft tissue imaging has led to continuous improvements on transducer miniaturization and spatial resolution. The aims of this study are (1) to create a comprehensive overview of the current literature of ultrasonic imaging relating to dentistry, and (2) to provide a view onto investigations with immediate, intermediate, and long-term impact in periodontology and implantology. METHODS A rapid literature review was performed using two broad searches conducted in the PubMed database, yielding 576 and 757 citations, respectively. A rating was established within a citation software (EndNote) using a 5-star classification. The broad search with 757 citations allowed for high sensitivity whereas the subsequent rating added specificity. RESULTS A critical review of the clinical applications of ultrasound in dentistry was provided with a focus on applications in periodontology and implantology. The role of ultrasound as a developing dental diagnostic tool was reviewed. Specific uses such as soft and hard tissue imaging, longitudinal monitoring, as well as anatomic and physiological evaluation were discussed. CONCLUSIONS Future efforts should be directed towards the transition of ultrasonography from a research tool to a clinical tool. Moreover, a dedicated effort is needed to introduce ultrasonic imaging to dental education and the dental community to ultimately improve the quality of patient care.
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Affiliation(s)
| | - Ankita Samal
- Department of Radiology, Medical School, University of Michigan, Ann Arbor, MI, USA
| | - Hsun-Liang Chan
- Department of Periodontology and Oral Medicine, Dental School, University of Michigan, Ann Arbor, MI, USA
| | - Oliver D Kripfgans
- Department of Radiology, Medical School, University of Michigan, Ann Arbor, MI, USA
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Lu S, Vien BS, Russ M, Fitzgerald M, Chiu WK. Monitoring Osseointegration Process Using Vibration Analysis. SENSORS (BASEL, SWITZERLAND) 2022; 22:6727. [PMID: 36146079 PMCID: PMC9504783 DOI: 10.3390/s22186727] [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: 08/04/2022] [Revised: 08/30/2022] [Accepted: 09/02/2022] [Indexed: 06/16/2023]
Abstract
Osseointegration implant has attracted significant attention as an alternative treatment for transfemoral amputees. It has been shown to improve patients' sitting and walking comfort and control of the artificial limb, compared to the conventional socket device. However, the patients treated with osseointegration implants require a long rehabilitation period to establish sufficient femur-implant connection, allowing the full body weight on the prosthesis stem. Hence, a robust assessment method on the osseointegration process is essential to shorten the rehabilitation period and identify the degree of osseointegration prior to the connection of an artificial limb. This paper investigates the capability of a vibration-related index (E-index) on detecting the degree of simulated osseointegration process with three lengths of the residual femur (152, 190 and 228 mm). The adhesive epoxy with a setting time of 5 min was applied at the femur-implant interface to represent the stiffness change during the osseointegration process. The cross-spectrum and colormap of the normalised magnitude demonstrated significant changes during the cure time, showing that application of these plots could improve the accuracy of the currently available diagnostic techniques. Furthermore, the E-index exhibited a clear trend with a noticeable average increase of 53% against the cure time for all three residual length conditions. These findings highlight that the E-index can be employed as a quantitative justification to assess the degree of osseointegration process without selecting and tracing the resonant frequency based on the geometry of the residual femur.
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Affiliation(s)
- Shouxun Lu
- Department of Mechanical & Aerospace Engineering, Monash University, Wellington Rd., Clayton, VIC 3800, Australia
| | - Benjamin Steven Vien
- Department of Mechanical & Aerospace Engineering, Monash University, Wellington Rd., Clayton, VIC 3800, Australia
| | - Matthias Russ
- The Alfred Hospital, 55 Commercial Road, Melbourne, VIC 3004, Australia
- National Trauma Research Institute, 89 Commercial Road, Melbourne, VIC 3004, Australia
| | - Mark Fitzgerald
- The Alfred Hospital, 55 Commercial Road, Melbourne, VIC 3004, Australia
- National Trauma Research Institute, 89 Commercial Road, Melbourne, VIC 3004, Australia
| | - Wing Kong Chiu
- Department of Mechanical & Aerospace Engineering, Monash University, Wellington Rd., Clayton, VIC 3800, Australia
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Lu S, Vien BS, Russ M, Fitzgerald M, Chiu WK. Experimental Investigation of Vibration Analysis on Implant Stability for a Novel Implant Design. SENSORS 2022; 22:s22041685. [PMID: 35214590 PMCID: PMC8874639 DOI: 10.3390/s22041685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 01/04/2023]
Abstract
Osseointegrated prostheses are widely used following transfemoral amputation. However, this technique requires sufficient implant stability before and during the rehabilitation period to mitigate the risk of implant breakage and loosening. Hence, reliable assessment methods for the osseointegration process are essential to ensure initial and long–term implant stability. This paper researches the feasibility of a vibration analysis technique for the osseointegration (OI) process by investigating the change in the dynamic response of the residual femur with a novel implant design during a simulated OI process. The paper also proposes a concept of an energy index (the E–index), which is formulated based on the normalized magnitude. To illustrate the potential of the E–index, this paper reports on changes in the vibrational behaviors of a 133 mm long amputated artificial femur model and implant system, with epoxy adhesives applied at the interface to simulate the OI process. The results show a significant variation in the magnitude of the colormap against curing time. The study also shows that the E–index was sensitive to the interface stiffness change, especially during the early curing process. These findings highlight the feasibility of using the vibration analysis technique and the E–index to quantitatively monitor the osseointegration process for future improvement on the efficiency of human health monitoring and patient rehabilitation.
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Affiliation(s)
- Shouxun Lu
- Department of Mechanical & Aerospace Engineering, Monash University, Melbourne, VIC 3800, Australia; (B.S.V.); (W.K.C.)
- Correspondence:
| | - Benjamin Steven Vien
- Department of Mechanical & Aerospace Engineering, Monash University, Melbourne, VIC 3800, Australia; (B.S.V.); (W.K.C.)
| | - Matthias Russ
- The Alfred Hospital, Melbourne, VIC 3004, Australia; (M.R.); (M.F.)
- National Trauma Research Institute, Melbourne, VIC 3004, Australia
| | - Mark Fitzgerald
- The Alfred Hospital, Melbourne, VIC 3004, Australia; (M.R.); (M.F.)
- National Trauma Research Institute, Melbourne, VIC 3004, Australia
| | - Wing Kong Chiu
- Department of Mechanical & Aerospace Engineering, Monash University, Melbourne, VIC 3800, Australia; (B.S.V.); (W.K.C.)
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Hériveaux Y, Nguyen VH, Haïat G. Ultrasonic Evaluation of the Bone-Implant Interface. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1364:373-396. [DOI: 10.1007/978-3-030-91979-5_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ultrasound Imaging in Dentistry: A Literature Overview. J Imaging 2021; 7:jimaging7110238. [PMID: 34821869 PMCID: PMC8624259 DOI: 10.3390/jimaging7110238] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/07/2021] [Accepted: 11/12/2021] [Indexed: 12/26/2022] Open
Abstract
(1) Background: the frequency with which diagnostic tests are prescribed with exposure to ionizing radiation, a cause of biological damage, has been studied, and with much more attention, patients are subjected to these diagnostic tests for diagnosis and follow-up. This review aimed, given the recent developments of this technology, to evaluate the possible use of ultrasound in different branches of dentistry. The possibility of applying ionizing-radiation-free diagnostic exams in dentistry, overcoming the limits of this application, has led scientific research in this area to obtain interesting results that bode well for the future. (2) Methods: a search for articles on the application of ultrasounds in dentistry was performed using the PubMed electronic database. (3) Results: only 32 studies were included, and these clearly stated that this examination is widely usable and in great progress. (4) Conclusions: regarding the modern application techniques of this diagnostic test, it is essential to consider technological evolution as an objective to reduce the damage and side effects of necessary diagnostic tests. The use of ultrasound in dentistry can represent a valid radiation-free alternative, in certain contexts, to the other most used exams.
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Hériveaux Y, Vayron R, Fraulob M, Lomami HA, Lenormand C, Haïat G. Assessment of dental implant stability using resonance frequency analysis and quantitative ultrasound methods. J Prosthodont Res 2021; 65:421-427. [PMID: 33177307 DOI: 10.2186/jpr.jpr_d_20_00052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Purpose Quantitative ultrasound (QUS) and resonance frequency analyses (RFA) are promising methods to assess the stability of dental implants. The aim of this in vivo preclinical study is to compare the results obtained with these two techniques with the bone-implant contact (BIC) ratio, which is the gold standard to assess dental implant stability.Methods Twenty-two identical dental implants were inserted in the tibia and femur of 12 rabbits, which were sacrificed after different healing durations (0, 4, 8 and 13 weeks). For each implant, the ultrasonic indicator (UI) and the implant stability quotient (ISQ) were retrieved just before the animal sacrifice using the QUS and RFA techniques, respectively. Histomorphometric analyses were carried out to estimate the bone-implant contact ratio.Results UI values were found to be better correlated to BIC values (R²=0.47) compared to ISQ values (R²=0.39 for measurements in one direction and R²=0.18 for the other direction), which were shown to be dependent on the direction of measurements. Errors realized on the UI were around 3.3 times lower to the ones realized on the ISQ.Conclusions QUS provide a better estimation of dental implant stability compared to RFA. This study paves the way for the future clinical development of a medical device aiming at assessing dental implant stability in a patient-specific manner. Clinical studies should confirm these results in the future.
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Affiliation(s)
- Yoann Hériveaux
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, Créteil Cedex, France
| | - Romain Vayron
- Université Polytechnique des Hauts de France, Laboratoire d'Automatique, de Mécanique et d'informatique Industrielles et Humaines, Valenciennes, France
| | - Manon Fraulob
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, Créteil Cedex, France
| | - Hugues Albini Lomami
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, Créteil Cedex, France
| | - Camille Lenormand
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, Créteil Cedex, France
| | - Guillaume Haïat
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, Créteil Cedex, France
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Xu W, Wood DS, Liu Y, Shen IY. A Vibratory, Subresonant Diagnostic Device to Measure Dental Implant Stability Via Angular Stiffness. J Med Device 2021. [DOI: 10.1115/1.4051832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Abstract
Stability of a dental implant reflects quality of osseointegration between the implant and its surrounding bone. While many methods have been proposed to characterize implant stability, angular stiffness at the neck of the implant has been proven to be a rigorous and accurate measure. Nevertheless, fast and reliable measurements of the angular stiffness in a clinical environment are not yet available. This article is to demonstrate a novel stability diagnostic device that can measure the angular stiffness accurately in clinical environments. The device consists of a sensing unit, a controller unit, and a mobile app. In the sensing unit, a coupler attaches a buzzer motor and a tiny accelerometer to an abutment of an implant, whose angular stiffness is to be measured. The buzzer vibrates at a frequency below the resonance frequency of the implant–bone–abutment system. Meanwhile, the accelerometer measures the abutment's vibration. The controller unit powers the buzzer, reads the accelerometer data, and transmits the data to the mobile app. The mobile app postprocesses the data and extracts the angular stiffness through use of a finite element model and a nonlinear regression algorithm. The extracted angular stiffness is compared with a calibrated angular stiffness, which is obtained independently via a force hammer and a laser Doppler vibrometer. The comparison shows reasonable agreement, with the difference being in the range of 4–20%.
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Affiliation(s)
- Weiwei Xu
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195-2600
| | - Darwin S. Wood
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195-2600
| | - Yifeng Liu
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195-2600
| | - I. Y. Shen
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195-2600
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Kwak Y, Nguyen VH, Hériveaux Y, Belanger P, Park J, Haïat G. Ultrasonic assessment of osseointegration phenomena at the bone-implant interface using convolutional neural network. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2021; 149:4337. [PMID: 34241416 DOI: 10.1121/10.0005272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 05/21/2021] [Indexed: 06/13/2023]
Abstract
Although endosseous implants are widely used in the clinic, failures still occur and their clinical performance depends on the quality of osseointegration phenomena at the bone-implant interface (BII), which are given by bone ingrowth around the BII. The difficulties in ensuring clinical reliability come from the complex nature of this interphase related to the implant surface roughness and the presence of a soft tissue layer (non-mineralized bone tissue) at the BII. The aim of the present study is to develop a method to assess the soft tissue thickness at the BII based on the analysis of its ultrasonic response using a simulation based-convolution neural network (CNN). A large-annotated dataset was constructed using a two-dimensional finite element model in the frequency domain considering a sinusoidal description of the BII. The proposed network was trained by the synthesized ultrasound responses and was validated by a separate dataset from the training process. The linear correlation between actual and estimated soft tissue thickness shows excellent R2 values equal to 99.52% and 99.65% and a narrow limit of agreement corresponding to [ -2.56, 4.32 μm] and [ -15.75, 30.35 μm] of microscopic and macroscopic roughness, respectively, supporting the reliability of the proposed assessment of osseointegration phenomena.
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Affiliation(s)
- Yunsang Kwak
- Centre National de la Recherche Scientifique, MSME, Université Paris-Est Créteil, Université Gustave Eiffel, F-94010 Creteil, France
| | - Vu-Hieu Nguyen
- University of Paris Est Creteil, Centre National de la Recherche Scientifique, Multiscale Simulation and Modeling Laboratory, F-94010 Creteil, France
| | - Yoann Hériveaux
- Centre National de la Recherche Scientifique, MSME, Université Paris-Est Créteil, Université Gustave Eiffel, F-94010 Creteil, France
| | - Pierre Belanger
- Department of Mechanical Engineering, École de Technologie Supérieure, 1100 Rue Notre-Dame O, Montreal, Quebec, H3C 1K3, Canada
| | - Junhong Park
- Department of Mechanical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, 04763 Seoul, South Korea
| | - Guillaume Haïat
- Centre National de la Recherche Scientifique, MSME, Université Paris-Est Créteil, Université Gustave Eiffel, F-94010 Creteil, France
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Fraulob M, Vayron R, Le Cann S, Lecuelle B, Hériveaux Y, Albini Lomami H, Flouzat Lachaniette CH, Haïat G. Quantitative ultrasound assessment of the influence of roughness and healing time on osseointegration phenomena. Sci Rep 2020; 10:21962. [PMID: 33319800 PMCID: PMC7738679 DOI: 10.1038/s41598-020-78806-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 11/23/2020] [Indexed: 12/04/2022] Open
Abstract
The evolution of bone tissue quantity and quality in contact with the surface of orthopedic and dental implants is a strong determinant of the surgical outcome but remains difficult to be assessed quantitatively. The aim of this study was to investigate the performance of a quantitative ultrasound (QUS) method to measure bone-implant interface (BII) properties. A dedicated animal model considering coin-shaped titanium implants with two levels of surface roughness (smooth, Sa = 0.49 µm and rough, Sa = 3.5 µm) allowed to work with a reproducible geometry and a planar interface. The implants were inserted in rabbit femurs and tibiae for 7 or 13 weeks. The ultrasonic response of the BII was measured ex vivo, leading to the determination of the 2-D spatial variations of bone in contact with the implant surface. Histological analysis was carried out to determine the bone-implant contact (BIC) ratio. The amplitude of the echo was significantly higher after 7 weeks of healing time compared to 13 weeks, for both smooth (p < 0.01) and rough (p < 0.05) implants. A negative correlation (R = − 0.63) was obtained between the ultrasonic response and the BIC. This QUS technique is more sensitive to changes of BII morphology compared to histological analyses.
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Affiliation(s)
- M Fraulob
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - R Vayron
- Laboratoire d'Automatique, de Mécanique et d'informatique Industrielles et Humaines, LAMIH UMR CNRS 8201, Université Polytechnique Hauts de France, 59300, Valenciennes, France
| | - S Le Cann
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - B Lecuelle
- Centre de Recherche BioMédicale, Ecole Nationale Vétérinaire d'Alfort, 7 Avenue du Général de Gaulle, 94700, Maisons-Alfort, France
| | - Y Hériveaux
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - H Albini Lomami
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - C H Flouzat Lachaniette
- INSERM U955, IMRB Université Paris-Est, 51 avenue du Maréchal de Lattre de Tassigny, 94000, Créteil, France.,Service de Chirurgie Orthopédique et Traumatologique, Hôpital Henri Mondor AP-HP, CHU Paris 12, Université Paris-Est, 51 avenue du Maréchal de Lattre de Tassigny, 94000, Créteil, France
| | - G Haïat
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France.
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Hériveaux Y, Nguyen VH, Biwa S, Haïat G. Analytical modeling of the interaction of an ultrasonic wave with a rough bone-implant interface. ULTRASONICS 2020; 108:106223. [PMID: 32771811 DOI: 10.1016/j.ultras.2020.106223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/09/2020] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Abstract
Quantitative ultrasound can be used to characterize the evolution of the bone-implant interface (BII), which is a complex system due to the implant surface roughness and to partial contact between bone and the implant. The determination of the constitutive law of the BII would be of interest in the context of implant acoustical modeling in order to take into account the imperfect characteristics of the BII. The aim of the present study is to propose an analytical effective model describing the interaction between an ultrasonic wave and a rough BII. To do so, a spring model was considered to determine the equivalent stiffness K of the BII. The stiffness contributions related (i) to the partial contact between the bone and the implant and (ii) to the presence of soft tissues at the BII during the process of osseointegration were assessed independently. K was found to be comprised between 1013 and 1017 N/m3 depending on the roughness and osseointegration of the BII. Analytical values of the reflection and transmission coefficients at the BII were derived from values of K. A good agreement with numerical results obtained through finite element simulation was obtained. This model may be used for future finite element bone-implant models to replace the BII conditions.
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Affiliation(s)
- Yoann Hériveaux
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 94010 Créteil Cedex, France
| | - Vu-Hieu Nguyen
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Créteil Cedex 94010, France
| | - Shiro Biwa
- Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8540, Japan
| | - Guillaume Haïat
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 94010 Créteil Cedex, France.
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13
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Factors Influencing Primary and Secondary Implant Stability—A Retrospective Cohort Study with 582 Implants in 272 Patients. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10228084] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The success rate of dental implants depends on primary and secondary stability. We investigate predictive factors for future risk stratification models. We retrospectively analyze 272 patients with a total of 582 implants. Implant stability is measured with resonance frequency analysis and evaluated based on the implant stability quotient (ISQ). A linear regression model with regression coefficients (reg. coeff.) and its 95% confidence interval (95% CI) is applied to assess predictive factors for implant stability. Implant diameter (reg. coeff.: 3.28; 95% CI: 1.89–4.66, p < 0.001), implant length (reg. coeff.: 0.67, 95% CI: 0.26–1.08, p < 0.001), and implant localization (maxillary vs. mandibular, reg. coeff.: −7.45, 95% CI: −8.70–(−6.20), p < 0.001) are significant prognostic factors for primary implant stability. An increase in ISQ between insertion and exposure is significantly correlated with healing time (reg. coeff.: 0.11, 95% CI: 0.04–0.19). Patients with maxillary implants have lower ISQ at insertion but show a higher increase in ISQ after insertion than patients with mandibular implants. We observe positive associations between primary implant stability and implant diameter, implant length, and localization (mandibular vs. maxillary). An increase in implant stability between insertion and exposure is significantly correlated with healing time and is higher for maxillary implants. These predictive factors should be further evaluated in prospective cohort studies to develop future preoperative risk-stratification models.
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Arosio P, Arosio F, Di Stefano DA. Implant Diameter, Length, and the Insertion Torque/Depth Integral: A Study Using Polyurethane Foam Blocks. Dent J (Basel) 2020; 8:dj8020056. [PMID: 32512762 PMCID: PMC7345030 DOI: 10.3390/dj8020056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/21/2020] [Accepted: 05/29/2020] [Indexed: 12/12/2022] Open
Abstract
The amount of energy necessary to place an implant in its seat, described as the integral of the torque-depth curve at insertion (I), has been validated as a reliable measure of primary stability. This study aimed to investigate whether (I) may detect the variations in primary stability caused by changes in the implant length or diameter better than the insertion torque (IT). Cylindric implants featuring a double-etched, sandblasted surface with different diameters or lengths were placed into monolithic polyurethane foam blocks with different densities that mimicked human bone. (I)-, (I)*-, IT-, IT*-diameter and -length plots ((I)* and IT* were the derived values corrected for undersizing) were drawn and the relation between (I), (I)*, IT, and IT* and the fixture diameter or length was investigated with correlation analysis. (I)* and IT* correlated better than (I) and IT with the fixture diameter; (I), (I)*, IT, and IT* correlated equally well with the fixture length. In all cases, the slopes of the lines best fitting the experimental data were greater for (I) or (I)* than IT or IT*, respectively. (I) or (I)* were better detectors than IT or IT* of the changes in primary stability that can be achieved by increasing the fixture diameter or length.
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Affiliation(s)
- Paolo Arosio
- Private Practitioner, Vimercate, 20871 Monza-Brianza, Italy;
| | | | - Danilo Alessio Di Stefano
- Adjunct Professor, Dental School, Vita-Salute University IRCCS San Raffaele, 20132 Milan, Italy
- Private Practitioner, 20148 Milan, Italy
- Correspondence: ; Tel.: +39-02-48705703
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15
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Hériveaux Y, Audoin B, Biateau C, Nguyen VH, Haïat G. Ultrasonic Propagation in a Dental Implant. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:1464-1473. [PMID: 32139153 DOI: 10.1016/j.ultrasmedbio.2020.01.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 12/23/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
Ultrasound techniques can be used to characterize and stimulate dental implant osseointegration. However, the interaction between an ultrasonic wave and the implant-bone interface (IBI) remains unclear. This study-combining experimental and numerical approaches-investigates the propagation of an ultrasonic wave in a dental implant by assessing the amplitude of the displacements along the implant axis. An ultrasonic transducer was excited in a transient regime at 10 MHz. Laser interferometric techniques were employed to measure the amplitude of the displacements, which varied 3.2-8.9 nm along the implant axis. The results demonstrated the propagation of a guided wave mode along the implant axis. The velocity of the first arriving signal was equal to 2110 m.s-1, with frequency components lower than 1 MHz, in agreement with numerical results. Investigating guided wave propagation in dental implants should contribute to improved methods for the characterization and stimulation of the IBI.
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Affiliation(s)
- Yoann Hériveaux
- CNRS, Laboratoire Modélisation et Simulation Multi-Échelle, Créteil, France
| | - Bertrand Audoin
- CNRS, Institut de Mécanique et d'Ingénierie, Talence, France
| | | | - Vu-Hieu Nguyen
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi-Échelle, Créteil, France
| | - Guillaume Haïat
- CNRS, Laboratoire Modélisation et Simulation Multi-Échelle, Créteil, France
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16
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Hériveaux Y, Haïat G, Nguyen VH. Reflection of an ultrasonic wave on the bone-implant interface: Comparison of two-dimensional and three-dimensional numerical models. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2020; 147:EL32. [PMID: 32007013 DOI: 10.1121/10.0000500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/14/2019] [Indexed: 06/10/2023]
Abstract
Quantitative ultrasound is used to characterize osseointegration at the bone-implant interface (BII). However, the interaction between an ultrasonic wave and the implant remains poorly understood. Hériveaux, Nguyen, and Haiat [(2018). J. Acoust. Soc. Am. 144, 488-499] recently employed a two-dimensional (2D) model of a rough BII to investigate the sensitivity of the ultrasonic response to osseointegration. The present letter aimed at assessing the validity of the 2D assumption. The values of the reflection coefficient of the BII obtained with two and three-dimensional models were found not to be significantly different for implant roughness lower than 20 μm. 2D modeling is sufficient to describe the interaction between ultrasound and the BII.
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Affiliation(s)
- Yoann Hériveaux
- Centre National de la Recherche Scientifique, Laboratoire Modélisation et Simulation Multi Echelle, Unité Mixte de Recherche 8208 CNRS, 61 avenue du Général de Gaulle, 94010 Créteil Cedex, France
| | - Guillaume Haïat
- Centre National de la Recherche Scientifique, Laboratoire Modélisation et Simulation Multi Echelle, Unité Mixte de Recherche 8208 CNRS, 61 avenue du Général de Gaulle, 94010 Créteil Cedex, France
| | - Vu-Hieu Nguyen
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, Unité Mixte de Recherche 8208 CNRS, 61 avenue du Général de Gaulle, 94010 Créteil Cedex, , ,
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17
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Modeling ultrasonic wave propagation in a dental implant - Bone system. J Mech Behav Biomed Mater 2019; 103:103547. [PMID: 31778910 DOI: 10.1016/j.jmbbm.2019.103547] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 09/04/2019] [Accepted: 11/19/2019] [Indexed: 02/05/2023]
Abstract
The evolution of the bone-implant interface reflects the implant osseointegration and bond strength, thereby determining the overall implant stability in the jawbone. Quantitative ultrasound represents a promising alternative technique to characterize the interfacial integrity, precisely due to the fact that those waves propagate essentially along the bone-implant interface, and are therefore influenced by its state. This study reports a numerical investigation of ultrasonic wave propagation for a commercial implant-jawbone system in which the thickness and mechanical properties of the interfacial layer (corresponding to the interphase) are systematically varied through the application of a rule of mixtures, in order to mimic the evolution from a dominantly soft tissue - like medium up to a fully healed bone. A simple figure of merit is devised in terms of an RMS-like (root mean square) factor based on the implant displacements, that evolves continuously and significantly with the bone "healing" process, thereby providing unequivocal information on the nature of the investigated bone-implant interface. The results show that the wave propagation pattern is primarily dictated by the impedance mismatch rather than by the interface thickness. This study validates the concept of quantitative ultrasonic testing as a sensitive alternative to the widespread resonant frequency analysis, thereby opening the way for future sensitivity analyses that will address more refined bone-implant interface pathologies such as those observed in the clinical realm.
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18
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Hériveaux Y, Nguyen VH, Geiger D, Haïat G. Elastography of the bone-implant interface. Sci Rep 2019; 9:14163. [PMID: 31578440 PMCID: PMC6775155 DOI: 10.1038/s41598-019-50665-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 09/17/2019] [Indexed: 01/04/2023] Open
Abstract
The stress distribution around endosseous implants is an important determinant of the surgical success. However, no method developed so far to determine the implant stability is sensitive to the loading conditions of the bone-implant interface (BII). The objective of this study is to investigate whether a quantitative ultrasound (QUS) technique may be used to retrieve information on compressive stresses applied to the BII. An acousto-mechanical device was conceived to compress 18 trabecular bovine bone samples onto coin-shaped implants and to measure the ultrasonic response of the BII during compression. The biomechanical behavior of the trabecular bone samples was modeled as Neo-Hookean. The reflection coefficient of the BII was shown to decrease as a function of the stress during the elastic compression of the trabecular bone samples and during the collapse of the trabecular network, with an average slope of −4.82 GPa−1. The results may be explained by an increase of the bone-implant contact ratio and by changes of bone structure occurring during compression. The sensitivity of the QUS response of the BII to compressive stresses opens new paths in the elaboration of patient specific decision support systems allowing surgeons to assess implant stability that should be developed in the future.
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Affiliation(s)
- Yoann Hériveaux
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 61 avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - Vu-Hieu Nguyen
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 61 avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - Didier Geiger
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 61 avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - Guillaume Haïat
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 61 avenue du Général de Gaulle, 94010, Créteil Cedex, France.
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19
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Rizzo P. A review on the latest advancements in the non-invasive evaluation/monitoring of dental and trans-femoral implants. Biomed Eng Lett 2019; 10:83-102. [PMID: 32175131 DOI: 10.1007/s13534-019-00126-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 06/05/2019] [Accepted: 07/29/2019] [Indexed: 12/11/2022] Open
Abstract
Dental implants and transcutaneous prostheses (trans-femoral implants) improve the quality of life of millions of people because they represent the optimal treatments to edentulism and amputation, respectively. The clinical procedures adopted by surgeons to insert these implants are well established. However, there is uncertainty on the outcomes of the post-operation recovery because of the uncertainty associated with the osseointegration process, which is defined as the direct, structural and functional contact between the living bone and the fixture. To guarantee the long-term survivability of dental or trans-femoral implants doctors sometimes implement non-invasive techniques to monitor and evaluate the progress of osseointegration. This may be done by measuring the stability of the fixture or by assessing the quality of the bone-fixture interface. In addition, care providers may need to quantify the structural integrity of the bone-implant system at various moments during the patients recovery. The accuracy of such non-invasive methods reduce recovery and rehabilitation time, and may increase the survival rate of the therapies with undisputable benefits for the patients. This paper provides a comprehensive review of clinically-approved and emerging non-invasive methods to evaluate/monitor the osseointegration of dental and orthopedic implants. A discussion about advantages and limitations of each method is provided based on the outcomes of the cases presented. The review on the emerging technologies covers the developments of the last decade, while the discussion about the clinically approved systems focuses mostly on the latest (2017-2018) findings. At last, the review also provides some suggestions for future researches and developments in the area of implant monitoring.
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Affiliation(s)
- Piervincenzo Rizzo
- Department of Civil and Environmental Engineering, University of Pittsburgh, 729 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15261 USA
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20
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Evaluation of the surface damage of dental implants caused by different surgical protocols: an in vitro study. Int J Oral Maxillofac Surg 2019; 48:971-981. [DOI: 10.1016/j.ijom.2018.12.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 12/08/2018] [Accepted: 12/13/2018] [Indexed: 01/04/2023]
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21
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Hériveaux Y, Nguyen VH, Brailovski V, Gorny C, Haïat G. Reflection of an ultrasonic wave on the bone-implant interface: Effect of the roughness parameters. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2019; 145:3370. [PMID: 31255165 DOI: 10.1121/1.5109668] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 05/10/2019] [Indexed: 06/09/2023]
Abstract
Quantitative ultrasound can be used to characterize the evolution of the bone-implant interface (BII), which is a complex system due to the implant surface roughness and to partial contact between bone and the implant. The aim of this study is to derive the main determinants of the ultrasonic response of the BII during osseointegration phenomena. The influence of (i) the surface roughness parameters and (ii) the thickness W of a soft tissue layer on the reflection coefficient r of the BII was investigated using a two-dimensional finite element model. When W increases from 0 to 150 μm, r increases from values in the range [0.45; 0.55] to values in the range [0.75; 0.88] according to the roughness parameters. An optimization method was developed to determine the sinusoidal roughness profile leading to the most similar ultrasonic response for all values of W compared to the original profile. The results show that the difference between the ultrasonic responses of the optimal sinusoidal profile and of the original profile was lower to typical experimental errors. This approach provides a better understanding of the ultrasonic response of the BII, which may be used in future numerical simulation realized at the scale of an implant.
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Affiliation(s)
- Yoann Hériveaux
- CNRS, Laboratoire Modélisation et Simulation Multi-Échelle, MSME UMR 8208 CNRS, 61 avenue du Général de Gaulle, 94010 Créteil Cedex, France
| | - Vu-Hieu Nguyen
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 61 avenue du Général de Gaulle, 94010 Créteil Cedex, France
| | - Vladimir Brailovski
- Department of Mechanical Engineering, École de technologie supérieure, 1100 Notre-Dame Street West, Montreal, Quebec H3C 1K3, Canada
| | - Cyril Gorny
- Laboratoire PIMM (ENSAM, CNRS, CNAM, Hesam Université), 151 Bd de l'Hôpital 75013 Paris (ENSAM), France
| | - Guillaume Haïat
- CNRS, Laboratoire Modélisation et Simulation Multi-Échelle, MSME UMR 8208 CNRS, 61 avenue du Général de Gaulle, 94010 Créteil Cedex, France
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22
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Vayron R, Nguyen VH, Haiat G. Comparing quantitative ultrasound and resonance frequency analysis to evaluate dental implant stability. Comput Methods Biomech Biomed Engin 2019. [DOI: 10.1080/10255842.2020.1713485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- R. Vayron
- CNRS, Laboratoire de Modélisation et de Simulation MultiEchelle, UMR CNRS 8208, Créteil, France
| | - V. H. Nguyen
- CNRS, Laboratoire de Modélisation et de Simulation MultiEchelle, UMR CNRS 8208, Créteil, France
| | - G. Haiat
- CNRS, Laboratoire de Modélisation et de Simulation MultiEchelle, UMR CNRS 8208, Créteil, France
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23
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Rittel D, Dorogoy A, Haïat G, Shemtov-Yona K. Resonant frequency analysis of dental implants. Med Eng Phys 2019; 66:65-74. [PMID: 30837120 DOI: 10.1016/j.medengphy.2019.02.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 12/14/2018] [Accepted: 02/17/2019] [Indexed: 12/29/2022]
Abstract
Dental implant stability influences the decision on the determination of the duration between implant insertion and loading. This work investigates the resonant frequency analysis by means of a numerical model. The investigation is done numerically through the determination of the eigenfrequencies and performing steady state response analyses using a commercial finite element package. A peri-implant interface, of simultaneously varying stiffness, density and layer thickness is introduced in the numerical 3D model in order to probe the sensitivity of the eigenfrequencies and steady state response to an evolving weakened layer, in an attempt to identify the bone reconstruction around the implant. For the first two modes, the resonant frequency is somewhat insensitive to the healing process, unless the weakened layer is rather large and compliant, like in the very early stages of the implantation. A "Normalized Healing Factor" is devised in the spirit of the Implant Stability Quotient, which can identify the healing process especially at the early stages after implantation. The sensitivity of the resonant frequency analysis to changes of mechanical properties of periprosthetic bone tissue seems relatively weak. Another indicator considering the amplitude as well as the resonance frequency might be more adapted to bone healing estimations. However, these results need to be verified experimentally as well as clinically.
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Affiliation(s)
- D Rittel
- Faculty of Mechanical Engineering, Technion, 32000 Haifa, Israel.
| | - A Dorogoy
- Faculty of Mechanical Engineering, Technion, 32000 Haifa, Israel
| | - G Haïat
- CNRS, Laboratoire Modélisation et Simulation Multi-échelle, UMR CNRS 8202, 94010 Créteil Cedex, France
| | - K Shemtov-Yona
- Faculty of Mechanical Engineering, Technion, 32000 Haifa, Israel
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Zanetti EM, Pascoletti G, Calì M, Bignardi C, Franceschini G. Clinical Assessment of Dental Implant Stability During Follow-Up: What Is Actually Measured, and Perspectives. BIOSENSORS 2018; 8:E68. [PMID: 30011870 PMCID: PMC6165397 DOI: 10.3390/bios8030068] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/09/2018] [Accepted: 07/11/2018] [Indexed: 01/02/2023]
Abstract
The optimization of loading protocols following dental implant insertion requires setting up patient-specific protocols, customized according to the actual implant osseointegration, measured through quantitative, objective methods. Various devices for the assessment of implant stability as an indirect measure of implant osseointegration have been developed. They are analyzed here, introducing the respective physical models, outlining major advantages and critical aspects, and reporting their clinical performance. A careful discussion of underlying hypotheses is finally reported, as is a suggestion for further development of instrumentation and signal analysis.
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Comparison of Resonance Frequency Analysis and of Quantitative Ultrasound to Assess Dental Implant Osseointegration. SENSORS 2018; 18:s18051397. [PMID: 29724028 PMCID: PMC5982662 DOI: 10.3390/s18051397] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 04/09/2018] [Accepted: 04/20/2018] [Indexed: 12/31/2022]
Abstract
Dental implants are widely used in the clinic. However, there remain risks of failure, which depend on the implant stability. The aim of this paper is to compare two methods based on resonance frequency analysis (RFA) and on quantitative ultrasound (QUS) and that aim at assessing implant stability. Eighty-one identical dental implants were inserted in the iliac crests of 11 sheep. The QUS and RFA measurements were realized after different healing times (0, 5, 7, and 15 weeks). The results obtained with the QUS (respectively RFA) method were significantly different when comparing two consecutive healing time for 97% (respectively, 18%) of the implants. The error made on the estimation of the healing time when analyzing the results obtained with the QUS technique was around 10 times lower than that made when using the RFA technique. The results corresponding to the dependence of the ISQ versus healing time were significantly different when comparing two directions of RFA measurement. The results show that the QUS method allows a more accurate determination of the evolution of dental implant stability when compared to the RFA method. This study paves the way towards the development of a medical device, thus providing a decision support system to dental surgeons.
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