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Zampa EP, Kyriakidou K, Papaparaskevas J, Pepelassi E, Karoussis IK. Effect of Low-Level Laser Irradiation (810 nm) on the Proliferation and Differentiation of Osteoblast-Like Cells Cultured on SLA Titanium Discs Exposed to a Peri-implantitis Environment. J Lasers Med Sci 2023; 14:e57. [PMID: 38144939 PMCID: PMC10746885 DOI: 10.34172/jlms.2023.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/07/2023] [Indexed: 12/26/2023]
Abstract
Introduction: Elimination of inflammation and re-osseointegration are the major objectives of peri-implantitis therapy. Existing data, however, do not support any decontamination approach. Thus, the present in vitro study aims to assess whether the air-debriding decontamination method with erythritol powder restores the biocompatibility of infected titanium discs and to investigate the potent biomodulatory ability of diode laser (810 nm) irradiation to promote cell proliferation and differentiation of premature osteoblast-like cells (MG63) towards osteocytes. Methods: The experimental groups consisted of cells seeded on titanium discs exposed or not in a peri-implantitis environment with or without biomodulation. Infected discs were cleaned with airflow with erythritol powder. Cell cultures seeded on tricalcium phosphate (TCP) surfaces with or without biomodulation with a laser (810 nm) were used as controls. The study evaluated cell viability, proliferation, adhesion (SEM) at 24, 48 and 72 hours, and surface roughness changes (profilometry), as well as the effects of low-level laser therapy (LLLT) on ALP, OSC, TGF-b1, Runx2, and BMP-7 expression in MG63 cells' genetic profile on days 7, 14, and 21. Results: The MTT assay as well as the FDA/PI method revealed that cell proliferation did not show significant differences between sterile and decontaminated discs at any timepoint. SEM photographs on day 7 showed that osteoblast-like cells adhered to both sterile and disinfected surfaces, while surface roughness did not change based on amplitude parameters. The combination of airflow and LLLT revealed a biomodulated effect on the differentiation of osteoblast-like cells with regard to the impact of laser irradiation on the genetic profile of the MG63 cells. Conclusion: In all groups tested, osteoblast-like cells were able to colonize, proliferate, and differentiate, suggesting a restoration of biocompatibility of infected discs using airflow. Furthermore, photomodulation may promote the differentiation of osteoblast-like cells cultured on both sterile and disinfected titanium surfaces.
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Affiliation(s)
- Evangelia P. Zampa
- Department of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, Thivon 2 Str, Goudi, 115 27, Athens, Greece
| | - Kyriaki Kyriakidou
- Department of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, Thivon 2 Str, Goudi, 115 27, Athens, Greece
| | - Joseph Papaparaskevas
- Department of Microbiology, School of Medicine, National and Kapodistrian University of Athens, M.Asias 75, 115 27, Athens, Greece
| | - Eudoxie Pepelassi
- Department of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, Thivon 2 Str, Goudi, 115 27, Athens, Greece
| | - Ioannis K. Karoussis
- Department of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, Thivon 2 Str, Goudi, 115 27, Athens, Greece
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Wu N, Song J, Liu X, Ma X, Guo X, Liu T, Wu M. Effect of an low-energy Nd: YAG laser on periodontal ligament stem cell homing through the SDF-1/CXCR4 signaling pathway. BMC Oral Health 2023; 23:501. [PMID: 37468947 DOI: 10.1186/s12903-023-03132-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/14/2023] [Indexed: 07/21/2023] Open
Abstract
BACKGROUND The key to the success of endogenous regeneration is to improve the homing rate of stem cells, and low-energy laser is an effective auxiliary means to promote cell migration and proliferation. The purpose of this study was to observe whether low-energy neodymium (Nd: YAG) laser with appropriate parameters can affect the proliferation and migration of periodontal ligament stem cells (PDLSCs) through SDF-1/CXCR4 pathway. METHODS h PDLSCs were cultured and identified. CCK8 assay was used to detect the proliferation of h PDLSCs after different power (0, 0.25, 0.5, 1, and 1.5 W) Nd: YAG laser (MSP, 10 Hz, 30 s, 300 μ m) irradiation at 2th, 3rd,5th, and 7th days, and the optimal laser irradiation parameters were selected for subsequent experiments. Then, the cells were categorized into five groups: control group (C), SDF-1 group (S), AMD3100 group (A), Nd: YAG laser irradiation group (N), and Nd: YAG laser irradiation + AMD3100 group (N + A). the migration of h PDLSCs was observed using Transwell, and the SDF-1 expression was evaluated using ELISA andRT-PCR. The SPSS Statistics 21.0 software was used for statistical analysis. RESULTS The fibroblasts cultured were identified as h PDLSCs. Compared with the C, when the power was 1 W, the proliferation rate of h PDLSCs was accelerated (P < 0.05). When the power was 1.5 W, the proliferation rate decreased (P < 0.05). When the power was 0.25 and 0.5 W, no statistically significant difference in the proliferation rate was observed (P > 0.05). The number of cell perforations values as follows: C (956.5 ± 51.74), A (981.5 ± 21.15), S (1253 ± 87.21), N (1336 ± 48.54), and N + A (1044 ± 22.13), that increased significantly in group N (P < 0.05), but decreased in group N + A (P < 0.05). The level of SDF-1 and the expression level of SDF-1 mRNA in groups N and N + A was higher than that in group C (P < 0.05) but lower than that in group A (P < 0.05). CONCLUSIONS Nd: YAG laser irradiation with appropriate parameters provides a new method for endogenous regeneration of periodontal tissue. SDF-1/CXCR4 signaling pathway may be the mechanism of LLLT promoting periodontal regeneration.
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Affiliation(s)
- Nan Wu
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Jianing Song
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Xin Liu
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Xiangtao Ma
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Xiaoman Guo
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Taohong Liu
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Mingxuan Wu
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China.
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China.
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Zhao M, Qiu F, Song J, Zhang C, Liu T, Wu M. The effects of Twinlight laser treatment on the titanium surface proliferation and osteogenic differentiation of mesenchymal stem cells. BMC Oral Health 2022; 22:409. [PMID: 36123683 PMCID: PMC9484218 DOI: 10.1186/s12903-022-02448-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/05/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The study aimed to observe the effects of a Twinlight laser on the titanium surface proliferation of inflammatory Mesenchymal stem cells (MSCs), inflammatory cytokine expression, and osteogenic differentiation. METHODS The MSCs were collected from bone tissue of healthy individuals.The cellular inflammatory model was established with 1 μg/mL lipopolysaccharide (LPS).Under the cellular inflammatory model,divided into five groups: the normal control group (C); the inflammatory control group (L); Er:YAG laser group (L + E); Nd:YAG laser group (L + N); Er:YAG laser and Nd:YAG laser group (L + E + N). The treated cells were inoculated onto titanium disks.The normal and inflammatory MSCs on the surface of titanium surface were examined by CCK-8, scanning election microscopy (SEM), quantitative real-time polymerase chain reaction (qRT‑PCR) and other methods for their proliferation, growth pattern, expression of inflammatory factors Interleukin-6 (IL-6), Interleukin-8 (IL-8) and osteogenic genes Runx2 (Runt-related transcription factor 2) and alkaline phosphatase (ALP), providing the theoretical basis and experimental data for the Twinlight laser-assisted treatment of peri-implantitis. Statistical analyses were performed using a Student's t test with SPSS 17.0 software. RESULTS Through observation using SEM, the cell densities of the L + E + N, L + E, and L + N groups were similar, but cell bodies in the L + E + N group were fuller and each had more than two pseudopodia. The expression level of IL-6 mRNA in the L, L + N, L + E, and L + E + N groups was higher than in group C (P < 0.05), and the expression level of IL-8 mRNA in the L + E + N group was significantly lower than in group L (P < 0.0001). On day 7, the expression level of ALP mRNA in the L, L + N, L + E, and L + E + N groups was lower than in group C (P < 0.05). On day 14, there was no significant difference in the expression level of ALP mRNA among the L + N, L + E + N, and C groups (P > 0.05). On day 7, the expression level of RUNX2 mRNA in the L + E + N group was higher than in group L (P < 0.001). On day 14, the expression level of RUNX2 mRNA in the L + E + N group was higher than in group L (P < 0.01). CONCLUSION Twinlight laser treatment promoted cell proliferation, inhibited the expression of inflammatory cytokines, and effectively enhanced the osteogenic differentiation of cells on a titanium surface.
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Affiliation(s)
- Mengzhen Zhao
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Feng Qiu
- Hebei Medical University, Zhongshan East Road 361, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Jianing Song
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Congcong Zhang
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Taohong Liu
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Mingxuan Wu
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China.
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China.
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Kadkhodazadeh M, Amid R, Gilvari Sarshari M, Mojahedi M, Parhizkar A. A comparison of human dental pulp stem cell activity cultured on sandblasted titanium discs decontaminated with Er:YAG laser and air-powder abrasion: an in vitro study. Lasers Med Sci 2022; 37:3259-3268. [PMID: 35907129 DOI: 10.1007/s10103-022-03615-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 07/19/2022] [Indexed: 10/16/2022]
Abstract
Decontamination of implant surfaces is important to the treatment of peri-implantitis. Er:YAG laser and air-powder abrasion system are regarded as the most effective means of decontamination of implant surfaces. The aim of this in vitro study was to compare the activity of human dental pulp stem cells (hDPSCs) cultured on decontaminated sandblasted titanium discs using Er:YAG laser irradiation and air-powder abrasion. Forty-five titanium discs were contaminated with Escherichia coli (E. coli) bacteria and fifteen titanium discs served as sterile control groups. Thirty contaminated titanium discs were decontaminated with Er:YAG laser or air-powder abrasion system and fifteen contaminated discs were used as contaminated control group. Afterwards, hDPSCs were seeded on all sixty experimental titanium discs. The effects of two decontamination tools on hDPSCs viability were evaluated by MTT assay. Alkaline phosphatase (ALP) activity assay, quantitative real-time PCR analysis and alizarin red staining method were performed to assess hDPSCs osteogenic differentiation. Scanning microscope electron (SEM) was also used to evaluate the effects of two different decontaminated methods on cellular morphology. Our study showed that decontamination using Er:YAG laser caused maximum cell viability. However, the ALP activity was not different in laser and air-abrasion groups. The significant expression of an osteoblastic marker and stronger Alizarin red staining were observed in laser irradiation groups. In addition, SEM observation indicated that grown cells were more stretched and more filopodia in Er:YAG-treated discs. In the present study, Er:YAG laser and air-powder abrasion improved the activity of the cells cultured on the decontaminated titanium discs. However, in comparison with air-powder abrasion, Er:YAG laser was more effective.
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Affiliation(s)
- Mahdi Kadkhodazadeh
- Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Daneshjoo Blvd, Daneshgah Square, Velenjak, Shahid Chamran Highway, Tehran, 19839-69411, Iran
| | - Reza Amid
- Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Daneshjoo Blvd, Daneshgah Square, Velenjak, Shahid Chamran Highway, Tehran, 19839-69411, Iran.,Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Daneshjoo Blvd, Daneshgah Square, Velenjak, Shahid Chamran Highway, Tehran, 19839-63113, Iran
| | - Maedeh Gilvari Sarshari
- School of Dentistry, Shahid Beheshti University of Medical Sciences, Daneshjoo Blvd, Daneshgah Square, Velenjak, Shahid Chamran Highway, Tehran, 19839-6941, Iran.
| | - Massoud Mojahedi
- Department of Laser, School of Dentistry, Shahid Beheshti University of Medical Sciences, Daneshjoo Blvd, Daneshgah Square, Velenjak, Shahid Chamran Highway, Tehran, 19839-69411, Iran
| | - Ardavan Parhizkar
- Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Daneshjoo Blvd, Daneshgah Square, Velenjak, Shahid Chamran Highway, Tehran, 19839-63113, Iran
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Amid R, Kadkhodazadeh M, Gilvari Sarshari M, Parhizkar A, Mojahedi M. Effects of Two Protocols of Low-Level Laser Therapy on the Proliferation and Differentiation of Human Dental Pulp Stem Cells on Sandblasted Titanium Discs: An In Vitro Study. J Lasers Med Sci 2022; 13:e1. [PMID: 35642237 DOI: 10.34172/jlms.2022.01] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 07/05/2021] [Indexed: 12/28/2022]
Abstract
Introduction: Stem cell activities have different effects on tissue response and its outcomes. Low-level laser therapy (LLLT) can be considered a trigger to modify stem cell activities. The objective of the present experimental investigation was to study the effects of two protocols of LLLT on the proliferation and differentiation of human dental pulp stem cells (hDPSCs) cultured on sandblasted titanium discs. Methods: Cells obtained from human dental pulp were seeded/cultured on titanium discs and were set in 2 main groups: (i) Radiated cells using the gallium-aluminium-arsenide (GaAlAs) diode laser at a continuous wavelength of 808 nm at 3 J/cm2 for 12 sec or 5 J/cm2 for 20 seconds, and (ii) Non-irradiated cells serving as control groups. The impact of LLLTs on hDPSC-proliferation and viability was investigated using the MTT assay after 24, 72 and 96 hours. The alkaline phosphatase activity was studied with p-nitrophenylphosphate after 14 and 28 days. The ability of hDPSCs to express osteocalcin was investigated using real-time polymerase chain reaction after 28 days, while their attachment was observed under a scanning electron microscope (SEM) after 14 and 28 days. Results: Our study showed that LLLTs caused maximum cell proliferation in 96 hours (P<0.001) with 3 J/cm2 resulting in a higher proliferation rate. The highest activity of alkaline phosphatase and osteocalcin expression was observed in the laser radiation groups after 28 days. Conclusion: The outcomes of the current study showed that cultured hDPSCs on sandblasted titanium discs had a tendency towards increased cellular activity in response to LLLTs. Thus, LLLTs could regulate the activities of hDPSCs on bone repair surrounding the sandblasted titanium discs.
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Affiliation(s)
- Reza Amid
- Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahdi Kadkhodazadeh
- Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Ardavan Parhizkar
- Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Massoud Mojahedi
- Department of Laser, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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In vivo efficacy of low-level laser therapy on bone regeneration. Lasers Med Sci 2022; 37:2209-2216. [PMID: 35022870 DOI: 10.1007/s10103-021-03487-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/01/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE In clinical use of low-level laser therapy for bone regeneration (LLLT), application protocol (dose, duration, and repetitions) has not been established. This study aimed to depict a reliable dosage of LLLT by evaluating the efficacy of different dosing of LLLT (diode) on the healing of rabbit cranial defects. METHODS Critical size defects were prepared in calvarias of 26 New Zealand White Rabbits in such each animal containing both test and control groups. Test groups were irradiated with 4 Joule/cm2 (j/cm2), 6 j/cm2, and 8 j/cm2. The rabbits were subjected to six times of laser treatments in 10 days. At the end of the second week, 5 rabbits were sacrificed for histopathological and immunohistochemical analyses. At the 4th and 8th weeks, 20 rabbits (10 each) were sacrificed for micro-CT and histopathological analyses. RESULTS Micro-CT evaluation revealed improved new bone formation in all test groups compared to the control group. 6 j/cm2 group demonstrated the highest bone formation. The highest bone morphogenic protein -2 levels were found in the 4 j/cm2 group. Osteocalcin expression was significantly higher in 4 j/cm2 group. CONCLUSIONS Our findings indicate that LLLT have a positive effect on new bone formation. The high efficacy of doses of 4 j/cm2 and 6 j/cm2 is promising to promote early bone healing.
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Bozkaya S, Uraz A, Guler B, Kahraman SA, Turhan Bal B. The stability of implants and microbiological effects following photobiomodulation therapy with one-stage placement: A randomized, controlled, single-blinded, and split-mouth clinical study. Clin Implant Dent Relat Res 2021; 23:329-340. [PMID: 33851765 DOI: 10.1111/cid.12999] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 03/25/2021] [Accepted: 04/01/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Studies have reported a positive effect on bone healing and the elimination of microorganisms placed on the titanium implants, while others have not confirmed the positive photobiomodulation therapy (PBMT) effects on bone regeneration and bone structure around the implants. PURPOSE The aim of the present study was to address the following questions: Does PBMT improve implant stability and affect microbiota around dental implants in the early stage of osseointegration? MATERIALS AND METHODS This study was designed as randomized-controlled prospective, split mouth, single-blinded clinical trial. Implants were randomly divided into two groups and implants placed in the test group were treated with Gallium-aluminum-arsenide (GaAlAs) diode laser with PBMT immediately after surgery and for 15 days (n = 47). In the control group, implants were not irradiated(n = 46). The primary stability of the implants was measured by the Resonance frequency analysis (RFA) after insertion and the secondary stability values were recorded at 30th, 60th, and 90th days after surgery as implant stability quotient (ISQ). The hand-held RFA was held perpendicular to the jaw line as indicated by the manufacturer for buccal-lingual (BL), mesial-distal (MD), and lingual-buccal (LB) measurement and different measurements were analyzed as separately. RESULTS Significantly higher magnetic RFA values were achieved on the 90th day in all measurement sides for both groups. ISQ levels in groups at baseline and the day-30, 60, and 90. ISQ readings were not statistically significant between test and control groups for each time point. A statistically significant increase in ISQ reading for BL, MD, and LB dimensions in both groups was noted from baseline to the day-90 (P < .05). CONCLUSION It was concluded that PBMT did not have a clinically significant effect on implant stabilization, especially in terms of ISQ values at early alveolar bone healing term. Clinical trial number is NCT04495335.
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Affiliation(s)
- Suleyman Bozkaya
- Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Gazi University, Ankara, Turkey
| | - Ahu Uraz
- Faculty of Dentistry, Department of Periodontology, Gazi University, Ankara, Turkey
| | - Berceste Guler
- Faculty of Dentistry, Department of Periodontology, Kütahya Health Science University, Kütahya, Turkey
| | - Sevil Altundağ Kahraman
- Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Gazi University, Ankara, Turkey
| | - Bilge Turhan Bal
- Faculty of Dentistry, Department of Prosthetic Restorative Dentistry, Gazi University, Ankara, Turkey
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Crous A, Abrahamse H. The Signalling Effects of Photobiomodulation on Osteoblast Proliferation, Maturation and Differentiation: A Review. Stem Cell Rev Rep 2021; 17:1570-1589. [PMID: 33686595 DOI: 10.1007/s12015-021-10142-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2021] [Indexed: 02/06/2023]
Abstract
Proliferation of osteoblasts is essential for maturation and mineralization of bone matrix. Ossification, the natural phase of bone-forming and hardening is a carefully regulated phase where deregulation of this process may result in insufficient or excessive bone mineralization or ectopic calcification. Osteoblasts can also be differentiated into osteocytes, populating short interconnecting passages within the bone matrix. Over the past few decades, we have seen a significant improvement in awareness and techniques using photobiomodulation (PBM) to stimulate cell function. One of the applications of PBM is the promotion of osteoblast proliferation and maturation. PBM research results on osteoblasts showed increased mitochondrial ATP production, increased osteoblast activity and proliferation, increased and pro-osteoblast expression in the presence of red and NIR radiation. Osteocyte differentiation was also accomplished using blue and green light, showing that different light parameters have various signalling effects. The current review addresses osteoblast function and control, a new understanding of PBM on osteoblasts and its therapeutic impact using various parameters to optimize osteoblast function that may be clinically important. Graphical Abstract.
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Affiliation(s)
- Anine Crous
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, PO Box 17011, Johannesburg, 2028, South Africa.
| | - Heidi Abrahamse
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, PO Box 17011, Johannesburg, 2028, South Africa
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Network meta-analysis of the treatment efficacy of different lasers for peri-implantitis. Lasers Med Sci 2021; 36:619-629. [PMID: 33590365 DOI: 10.1007/s10103-020-03101-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 07/08/2020] [Indexed: 02/05/2023]
Abstract
The aim of this study was comparing different lasers with conventional non-surgical treatment (CNT) for the management of peri-implantitis, regarding probing depth (PD), plaque index (PLI), clinical attachment level (CAL), and sulcus bleeding index (SBI). Randomized controlled trials (RCTs) on different lasers and CNT for peri-implantitis were searched. Pairwise and network meta-analyses were performed to analyze the PD, PLI, CAL, and SBI outcomes. The risk of bias, evidence quality, statistical heterogeneity, and ranking probability were also evaluated. Eleven studies were included in this study, involving three types of lasers. Diode + CNT had significantly superior efficacy to CNT alone, regarding PD reduction, while Er:YAG + CNT had significantly superior efficacy than CNT in terms of the PLI, CAL, and SBI. The highest probability of being most effective for PD was diode + CNT (49%), while Er:YAG + CNT had the highest probability of improving the PLI, CAL, and SBI (66%, 53%, and 79%, respectively). Diode + CNT was significantly superior for PD management in peri-implantitis compared with CNT alone, while Er:YAG + CNT significantly improved the PLI, CAL, and SBI. Therefore, Er:YAG + CNT might be recommended methods considered for management of peri-implantitis.
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In Vitro Cytological Responses against Laser Photobiomodulation for Periodontal Regeneration. Int J Mol Sci 2020; 21:ijms21239002. [PMID: 33256246 PMCID: PMC7730548 DOI: 10.3390/ijms21239002] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/18/2020] [Accepted: 11/21/2020] [Indexed: 02/06/2023] Open
Abstract
Periodontal disease is a chronic inflammatory disease caused by periodontal bacteria. Recently, periodontal phototherapy, treatment using various types of lasers, has attracted attention. Photobiomodulation, the biological effect of low-power laser irradiation, has been widely studied. Although many types of lasers are applied in periodontal phototherapy, molecular biological effects of laser irradiation on cells in periodontal tissues are unclear. Here, we have summarized the molecular biological effects of diode, Nd:YAG, Er:YAG, Er,Cr:YSGG, and CO2 lasers irradiation on cells in periodontal tissues. Photobiomodulation by laser irradiation enhanced cell proliferation and calcification in osteoblasts with altering gene expression. Positive effects were observed in fibroblasts on the proliferation, migration, and secretion of chemokines/cytokines. Laser irradiation suppressed gene expression related to inflammation in osteoblasts, fibroblasts, human periodontal ligament cells (hPDLCs), and endothelial cells. Furthermore, recent studies have revealed that laser irradiation affects cell differentiation in hPDLCs and stem cells. Additionally, some studies have also investigated the effects of laser irradiation on endothelial cells, cementoblasts, epithelial cells, osteoclasts, and osteocytes. The appropriate irradiation power was different for each laser apparatus and targeted cells. Thus, through this review, we tried to shed light on basic research that would ultimately lead to clinical application of periodontal phototherapy in the future.
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Cardoso MV, do Vale Placa R, Sant'Ana ACP, Greghi SLA, Zangrando MSR, de Rezende MLR, Oliveira RC, Damante CA. Laser and LED photobiomodulation effects in osteogenic or regular medium on rat calvaria osteoblasts obtained by newly forming bone technique. Lasers Med Sci 2020; 36:541-553. [PMID: 32514865 DOI: 10.1007/s10103-020-03056-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 06/01/2020] [Indexed: 12/16/2022]
Abstract
The purposes of this study are to evaluate the effects of photobiomodulation (PBM) with laser and LED on rat calvaria osteoblasts (rGO lineage), cultured in osteogenic (OST) or regular (REG) medium, after induction of a quiescent state and to test if PBM is capable of osteogenic induction and if there is a sum of effects when combining OST medium with PBM. Before irradiation, the cells were put in a quiescent state (1% FBS) 24 h, when red (AlGaInP-660 nm) and infrared laser (GaAlAs-808 nm) and LED (637 ± 15 nm) were applied. The groups were as follows: red laser (RL3-5 J/cm2, 3 s and RL5-8.3 J/cm2, 5 s, 1.66 W/cm2); infrared laser (IrL3-5 J/cm2, 3 s and IrL5-8.3 J/cm2, 5 s); LED (LED3-3 s and LED5-5 s, 0.02 J/cm2, 0.885 W/cm2); positive (C+, 10% FBS) and negative control (C-, 1% FBS). For alkaline phosphatase (ALP) and mineralization assays, the cells were cultured in REG (DMEM 10% FBS) and OST medium (DMEM 10% FBS, 50 μg/mL ascorbic acid, 10 mM β-glycerophosphate). Statistical analysis was performed using ANOVA and Tukey's tests (p < 0.05). RL5 and LED5 increased proliferation, in vitro wound closure, ALP, and mineralization in rGO cells (p < 0.05). PBM with red laser and LED induced mineralization by itself, without osteogenic medium, not observed for infrared laser (p < 0.05). A sum of effects was observed in osteogenic medium and PBM by infrared, red laser, and LED (5 s). Red laser and LED increased proliferation, migration, and secretory phases in rGO cells in a dose-dependent manner. PBM with red laser and LED promotes osteogenic induction by itself. PBM with infrared laser and osteogenic medium potentializes mineralization.
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Affiliation(s)
- Matheus Völz Cardoso
- Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil.
| | - Rebeca do Vale Placa
- Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil
| | | | - Sebastião Luiz Aguiar Greghi
- Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil
| | | | - Maria Lucia Rubo de Rezende
- Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil
| | - Rodrigo Cardoso Oliveira
- Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil
| | - Carla Andreotti Damante
- Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil
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Photobiomodulation as an adjunctive therapy for alveolar socket preservation: a preliminary study in humans. Lasers Med Sci 2020; 35:1711-1720. [PMID: 31970564 DOI: 10.1007/s10103-020-02962-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 01/10/2020] [Indexed: 12/21/2022]
Abstract
Bone remodeling results in loss of alveolar bone height and thickness. Photobiomodulation (PBM) based on photochemical stimulation by low-intensity lasers emerges as an adjunctive therapy for alveolar socket preservation. Our study aimed to evaluate the effects of PBM therapy on alveolar bone repair. Twenty healthy patients in need of bilateral extraction of lower molars were enrolled in this split-mouth randomized and blind clinical trial. The extraction sites were randomly selected to receive either the PBM therapy with a CW GaAIAs diode laser (808 nm; 0.028 mm2; 0.1 W; 3.6 W/cm2; 89 J/cm2; 2.5 J/point) or no treatment (Control). Bone biopsies were harvested 45 days after the dental extraction and evaluated using micro-computerized tomography (μCT), morphometric, and histological analysis. Data were compared using the paired t test, and the level of significance was set at 5%. Bone surface (p = 0.029), bone surface/total volume (p = 0.028), trabecular number (p = 0.025), and connectivity density (p = 0.029) were higher at the PBM group compared with Control. The histological observations confirmed the μCT findings. PBM samples exhibited higher number of organized and connected bone trabeculae along with higher density of blood vessels than Control. Control samples displayed a dense and highly cellular connective tissue at the central area accompanied by the presence of immature bone trabeculae at the periphery. Our results indicated that the PBM therapy improved the newly bone trabeculae formation and their connectivity which increased bone surface, indicating the positive effect of the laser on alveolar human socket repair.
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Gholami L, Asefi S, Hooshyarfard A, Sculean A, Romanos GE, Aoki A, Fekrazad R. Photobiomodulation in Periodontology and Implant Dentistry: Part 2. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2019; 37:766-783. [PMID: 31765274 DOI: 10.1089/photob.2019.4731] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
(Part 1 of this article can be located at www.liebertpub.com/doi/10.1089/photob.2019.4710.) Objective: Finding evidence-based treatment strategies for low-level light therapy and the correct incorporation of these treatment methods in the clinical practice of periodontics. Background: Photobiomodulation has been shown to have biostimulatory, anti-inflammatory, and analgesic effects that can be beneficial in periodontal and dental implant treatment procedures. Methods: In this review, we have addressed some clinical questions regarding the potential clinical application of low-level light irradiation and its photobobiomodulatory effects in periodontology and implantology. The literature was searched for in vivo (animal or clinical) articles written in English in four electronic databases of PubMed, Scopus, Google Scholar, and Cochrane Library until April 2019. Only studies with low irradiation doses without any thermal effects used only for their photobiomodulatory purposes were included. Results: We were able to find relevant studies for all of our questions, and positive effects for the application of light therapy were reported in most of the studies. However, there is still a great deal of heterogeneity in terms of study designs and most importantly in light irradiation devices and the parameters used. Due to this issue, it was not possible to reach specific evidence-based irradiation protocols for the questions addressed in this review. Conclusions: Based on our search results, an obvious positive effect of low-level light therapy on stimulation of healing of periodontal soft and hard tissues and reduction of inflammation can be seen. Future well-designed randomized control studies with the same irradiation settings and systematic reviews evaluating the studies found on the questions mentioned are necessary to reach evidence-based recommendations.
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Affiliation(s)
- Leila Gholami
- Dental Implants Research Center, Department of Periodontology, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Sohrab Asefi
- Department of Orthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Amirarsalan Hooshyarfard
- Dental Implants Research Center, Department of Periodontology, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Anton Sculean
- Department of Periodontology, School of Dentistry, University of Bern, Bern, Switzerland
| | - Georgios E Romanos
- Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, New York
| | - Akira Aoki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Reza Fekrazad
- Radiation Sciences Research Center, Laser Research Center in Medical Sciences, AJA University of Medical Sciences, Tehran, Iran.,International Network for Photo Medicine and Photo Dynamic Therapy (INPMPDT), Universal Scientific Education and Research Network (USERN), Tehran, Iran
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Khalil NM, Noureldin MG. Comparison of Single Versus Multiple Low-Level Laser Applications on Bone Formation in Extraction Socket Healing in Rabbits (Histologic and Histomorphometric Study). J Oral Maxillofac Surg 2019; 77:1760-1768. [DOI: 10.1016/j.joms.2019.03.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 01/04/2023]
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15
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Farivar S, Ramezankhani R, Mohajerani E, Ghazimoradi MH, Shiari R. Gene Expression Analysis of Chondrogenic Markers in Hair Follicle Dermal Papillae Cells Under the Effect of Laser Photobiomodulation and the Synovial Fluid. J Lasers Med Sci 2019; 10:171-178. [PMID: 31749941 DOI: 10.15171/jlms.2019.27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction: Regarding the limited ability of the damaged cartilage cells to self-renew, which is due to their specific tissue structure, subtle damages can usually cause diseases such as osteoarthritis. In this work, using laser photobiomodulation and an interesting source of growth factors cocktail called the synovial fluid, we analyzed the chondrogenic marker genes in treated hair follicle dermal papilla cells as an accessible source of cells with relatively high differentiation potential. Methods: Dermal papilla cells were isolated from rat whisker hair follicle (Rattus norvegicus) and established cell cultures were treated with a laser (gallium aluminum arsenide diode Laser (λ=780 nm, 30 mW) at 5 J/cm2 ), the synovial fluid, and a combination of both. After 1, 4, 7, and 14 days, the morphological changes were evaluated and the expression levels of four chondrocyte marker genes (Col2a1, Sox-9, Col10a1, and Runx-2) were assessed by the quantitative real-time polymerase chain reaction. Results: It was monitored that treating cells with laser irradiation can accelerate the rate of proliferation of cells. The morphology of the cells treated with the synovial fluid altered considerably as in the fourth day they surprisingly looked like cultured articular chondrocytes. The gene expression analysis showed that all genes were up-regulated until the day 14 following the treatments although not equally in all the cell groups. Moreover, the cell groups treated with both irradiation and the synovial fluid had a significantly augmented expression in gene markers. Conclusion: Based on the gene expression levels and the morphological changes, we concluded that the synovial fluid can have the potential to make the dermal papilla cells to most likely mimic the chondrogenic and/or osteogenic differentiation, although this process seems to be augmented by the irradiation of the low-level laser.
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Affiliation(s)
- Shirin Farivar
- Department of Molecular and Cell Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, General Campus, Tehran, Iran
| | - Roya Ramezankhani
- Department of Molecular and Cell Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, General Campus, Tehran, Iran
| | - Ezedin Mohajerani
- Laser and Plasma Research Institute, Shahid Beheshti University, General Campus, Tehran, Iran
| | - Mohammad Hosein Ghazimoradi
- Department of Molecular and Cell Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, General Campus, Tehran, Iran
| | - Reza Shiari
- Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Mussttaf RA, Jenkins DFL, Jha AN. Assessing the impact of low level laser therapy (LLLT) on biological systems: a review. Int J Radiat Biol 2019; 95:120-143. [DOI: 10.1080/09553002.2019.1524944] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ruwaidah A. Mussttaf
- School of Computing, Electronics and Mathematics, University of Plymouth, Plymouth, UK
| | - David F. L. Jenkins
- School of Computing, Electronics and Mathematics, University of Plymouth, Plymouth, UK
| | - Awadhesh N. Jha
- School of Biological and Marine Sciences, University of Plymouth, Plymouth, UK
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Hanna R, Agas D, Benedicenti S, Ferrando S, Laus F, Cuteri V, Lacava G, Sabbieti MG, Amaroli A. A Comparative Study Between the Effectiveness of 980 nm Photobiomodulation Delivered by Hand-Piece With Gaussian vs. Flat-Top Profiles on Osteoblasts Maturation. Front Endocrinol (Lausanne) 2019; 10:92. [PMID: 30842754 PMCID: PMC6391326 DOI: 10.3389/fendo.2019.00092] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 02/01/2019] [Indexed: 12/19/2022] Open
Abstract
Photobiomodulation (PBM) is a clinically accepted tool in regenerative medicine and dentistry to improve tissue healing and repair and to restore the functional disability. The current in vitro study aimed to investigate the photobiomodulatory effects of 980 nm wavelength (the real energy at the target: ~0.9 W, ~0.9 W/cm2, 60 s, ~55 J/cm2 and a single energy ~55 J in CW) on MC3T3-E1 pre-osteoblast, delivered with flattop profile in comparison to the standard profile. The laser groupings and their associated energies were: Group 1 - once per week (total energy 110 J); Group 2 - three times per week (alternate day) (total energy 330 J); Group 3 - five times per week (total energy 550 J). The metabolic activity and the osteoblasts maturation were analyzed by alkaline phosphatase assay, alizarin red S histological staining, immunoblot and/or double immunolabeling analysis for Bcl2, Bax, Runx-2, Osx, Dlx5, osteocalcin, and collagen Type 1. Our data, for the first time, prove that laser irradiation of 980 nm wavelength with flat-top beam profile delivery system, compared to standard-Gaussian profile, has improved photobiomodulatory efficacy on pre-osteoblastic cells differentiation. Mechanistically, the irradiation enhances the pre-osteoblast differentiation through activation of Wnt signaling and activation of Smads 2/3-βcatenin pathway.
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Affiliation(s)
- Reem Hanna
- Department of Surgical and Diagnostic Sciences, Laser Therapy Centre, University of Genoa, Genoa, Italy
- Department of Oral Surgery, Dental Institute, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Dimitrios Agas
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Stefano Benedicenti
- Department of Surgical and Diagnostic Sciences, Laser Therapy Centre, University of Genoa, Genoa, Italy
| | - Sara Ferrando
- Laboratory of New Model Organism (NeMo LAB), Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy
| | - Fulvio Laus
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Vincenzo Cuteri
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Giovanna Lacava
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | | | - Andrea Amaroli
- Department of Surgical and Diagnostic Sciences, Laser Therapy Centre, University of Genoa, Genoa, Italy
- Laboratory of New Model Organism (NeMo LAB), Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy
- *Correspondence: Andrea Amaroli
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Mikhail FF, El-Din M, Ibrahim T, Zekry K, Nemat A, Nasry S. Effect of Laser Therapy on the Osseointegration of Immediately Loaded Dental Implants in Patients under Vitamin C, Omega-3 and Calcium Therapy. Open Access Maced J Med Sci 2018; 6:1468-1474. [PMID: 30159079 PMCID: PMC6108810 DOI: 10.3889/oamjms.2018.291] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 06/24/2018] [Accepted: 07/03/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND: The use of laser therapy in the biostimulation of bone repair has been growing steadily. AIM: This study aimed to evaluate the radio-densitometric effect of low-intensity laser therapy on the osseointegration of immediately loaded dental implants in patients under vitamin C, omega-3 and calcium therapy. PATIENTS AND METHODS: A single implant was placed in the mandibular first molar region of twenty patients which were equally divided into two groups. In the non-laser group, the healing phase was left to progress spontaneously without any intervention, while in the laser group it was augmented with low-level laser therapy of wavelength 904 nm in contact mode, continuous wave, 20 mW output power and exposure time 30 sec with a dose 4.7 J/cm2. Patients in both groups were given vitamin C, calcium and omega-3 starting one month preoperatively. Postoperative digital panoramas were taken immediately after surgery, 1.5 months and 6 months postoperatively. Changes in bone density along the bone-implant interface at the mesial, distal and apical sides were assessed using the Digora software. RESULTS: Independent student t-test was used to compare means of variables between the laser and the non-laser group while repeated measures ANOVA was used to compare bone densities at different times for the same group. Significant increased differences were observed at the mesial, distal and apical sides surrounding the implants of both groups per time. However, the rate of increase was significantly higher in the laser group. The mean difference at the mesial side after 6 months was 21.99 ± 5.48 in the laser group and 14.21 ± 4.95 in the non-laser group, while it read 21.74 ± 3.56 in the laser group and 10.78 ± 3.90 in non-laser group at the distal side and was 18.90 ± 5.91 in the laser group and 10.39 ± 3.49 in non-laser group at the apical side. Significance was recorded at P = 0.004, P = 0.0001, and 0.001 at the mesial, distal and apical sides respectively. CONCLUSION: The low-intensity laser irradiation significantly promoted bone healing and speeded up the osseointegration process emphasising the laser’s biostimulatory effect.
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Affiliation(s)
- Faten Fawzy Mikhail
- Department of Surgery and Oral Medicine, National Research Centre, Cairo, Egypt
| | - Mouchira El-Din
- Periodontology and Oral Radiology, Department of Oral Medicine, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt
| | - Tarek Ibrahim
- Department of Medical Laser Application, National Institute of Laser Enhanced Sciences, Cairo University, Cairo, Egypt
| | - Khaled Zekry
- Periodontology and Oral Radiology, Department of Oral Medicine, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt
| | - Amany Nemat
- Department of Surgery and Oral Medicine, National Research Centre, Cairo, Egypt
| | - Sherine Nasry
- Department of Surgery and Oral Medicine, National Research Centre, Cairo, Egypt
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19
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Indocyanine green-mediated photobiomodulation on human osteoblast cells. Lasers Med Sci 2018; 33:1591-1599. [DOI: 10.1007/s10103-018-2530-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 04/30/2018] [Indexed: 12/16/2022]
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20
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The impact of photobiomodulation on osteoblast-like cell: a review. Lasers Med Sci 2018; 33:1147-1158. [DOI: 10.1007/s10103-018-2486-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 03/13/2018] [Indexed: 12/22/2022]
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21
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Li Q, Chen Y, Dong S, Liu S, Zhang X, Si X, Zhou Y. Laser irradiation promotes the proliferation of mouse pre-osteoblast cell line MC3T3-E1 through hedgehog signaling pathway. Lasers Med Sci 2017; 32:1489-1496. [PMID: 28667508 DOI: 10.1007/s10103-017-2269-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 06/16/2017] [Indexed: 01/19/2023]
Abstract
Low-level laser could promote osteoblast proliferation, and it has been applied in clinical practice to promote wound healing and tissue regeneration. However, the mechanism related to laser irradiation remains unclear. This study aimed to investigate the effects of low-level laser irradiation on the cell proliferation and the expressions of hedgehog signaling molecules Indian hedgehog (Ihh), Ptch, and Gli in vitro. In our present study, the MTT method was used to evaluate the effect on cell proliferation of laser irradiation on MC3T3-E1 cells. And cell cycle was examined by flow cytometry. Gene and protein expressions of hedgehog signaling molecules, including Ihh, Ptch, Smoothened (Smo), and Gli, were examined by qRT-PCR and western blot analysis. The results showed that laser irradiation at dosage of 3.75 J/cm2 enhances the proliferation of MC3T3-E1 cells compared with control groups (p = 0.00). Moreover, laser irradiation (3.75 J/cm2) increased the cell amount at S phase (p = 0.00). In addition, the expressions of Ihh, Ptch, Smo, and Gli were significantly increased compared to the control during laser irradiation (3.75 J/cm2)-induced MC3T3-E1 osteoblast proliferation. After adding the hedgehog signaling inhibitor CY (cyclopamine), cell proliferation and Ihh, Ptch, Smo, and Gli expressions were inhibited (p = 0.00), and the cell amount at S phase was reduced compared with combination groups (p = 0.00). These results indicated that laser irradiation promotes proliferation of MC3T3-E1 cells through hedgehog signaling pathway. Our findings provide insights into the mechanistic link between laser irradiation-induced osteogenesis and hedgehog signaling pathway.
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Affiliation(s)
- Qiushi Li
- VIP Integrated Department, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Yingxin Chen
- VIP Integrated Department, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Shujun Dong
- VIP Integrated Department, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Shujie Liu
- VIP Integrated Department, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Xiaodan Zhang
- Department of Oral Health Science, Affiliated Stomatological Hospital of Harbin Medical University, Harbin, China
| | - Xi Si
- Department of Oral Medicine, Hainan Medical University, Haikou, China
| | - Yanmin Zhou
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, 130021, China.
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Oliveira FAD, Matos AA, Matsuda SS, Buzalaf MAR, Bagnato VS, Machado MADAM, Damante CA, Oliveira RCD, Peres-Buzalaf C. Low level laser therapy modulates viability, alkaline phosphatase and matrix metalloproteinase-2 activities of osteoblasts. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 169:35-40. [PMID: 28264787 DOI: 10.1016/j.jphotobiol.2017.02.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 02/26/2017] [Indexed: 11/26/2022]
Abstract
Low level laser therapy (LLLT) has been shown to stimulate bone cell metabolism but their impact on the matrix metalloproteinase (MMP) expression and activity is little explored. This study evaluated the influence of LLLT at two different wavelengths, red and infrared, on MC3T3-E1 preosteoblast viability, alkaline phosphatase (ALP) and MMP-2 and -9 activities. To accomplish this, MC3T3-E1 cells were irradiated with a punctual application of either red (660nm; InGaAIP active medium) or infrared (780nm; GaAlAs active medium) lasers both at a potency of 20mW, energy dose of 0.08 or 0.16J, and energy density of 1.9J/cm2 or 3.8J/cm2, respectively. The control group received no irradiation. Cellular viability, ALP and MMP-2 and -9 activities were assessed by MTT assay, enzymatic activity and zymography, respectively, at 24, 48 and 72h. The treatment of cells with both red and infrared lasers significantly increased the cellular viability compared to the non-irradiated control group at 24 and 48h. The ALP activity was also up modulated in infrared groups at 24 and 72h, depending on the energy densities. In addition, the irradiation with red laser at the energy density of 1.9J/cm2 promoted an enhancement of MMP-2 activity at 48 and 72h. However, no differences were observed for the MMP-9 activity. In conclusion, when used at these specific parameters, LLL modulates both preosteoblast viability and differentiation highlighted by the increased ALP and MMP-2 activities induced by irradiation.
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Affiliation(s)
- Flávia Amadeu de Oliveira
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Adriana Arruda Matos
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Sandra Satiko Matsuda
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | | | - Vanderley Salvador Bagnato
- Departamento de Física e Ciência dos Materiais, Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil
| | | | - Carla Andreotti Damante
- Department of Prosthodontics/Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | | | - Camila Peres-Buzalaf
- Universidade do Sagrado Coração, Pró-Reitoria de Pesquisa e Pós-Graduação, Bauru, SP, Brazil
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Massotti FP, Gomes FV, Mayer L, de Oliveira MG, Baraldi CE, Ponzoni D, Puricelli E. Histomorphometric assessment of the influence of low-level laser therapy on peri-implant tissue healing in the rabbit mandible. Photomed Laser Surg 2017; 33:123-8. [PMID: 25751666 DOI: 10.1089/pho.2014.3792] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The purpose of this study was to demonstrate the effect of low-level laser therapy (LLLT) on the peri-implant bone healing process in the rabbit mandible. BACKGROUND DATA LLLT has been shown to accelerate tissue repair and osseointegration of implants placed into the rabbit tibia. However, the beneficial effects of LLLT have never been tested in the rabbit mandible, which would more closely mimic the human situation. MATERIALS AND METHODS Twenty-four male New Zealand rabbits were randomly divided into four groups of six animals each. All animals had their left mandibular incisors extracted, followed by immediate insertion of a titanium dental implant in the fresh socket. Three groups received LLLT [aluminum-gallium-arsenide (AlGaAs), λ=830nm, 50 mW, continuous wave (CW)] at three different energy densities per treatment session (E-5, 5 J/cm(2); E-10, 10 J/cm(2); and E-20, 20 J/cm(2)). Irradiation was performed every 48 h for 13 days, totaling seven sessions. One group received sham treatment (controls). Histological sections were obtained from each of the 24 mandibles dissected, without first decalcifying the specimens, and were stained with hematoxylin and eosin and Picrosirius red for histomorphometric evaluation. Bone-to-implant contact (BIC), bone formation area, and collagen fiber area were assessed by light microscopy. RESULTS Significant differences were found between group E-20 and all other groups (p<0.05). Histomorphometric evaluation showed significantly higher BIC and significantly more collagen fibers in group E-20. CONCLUSIONS Photobiostimulation with LLLT at an energy density of 20 J/cm(2) per session had a significant positive effect on new bone formation around dental implants inserted in the rabbit mandible.
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Affiliation(s)
- Fabrício Poletto Massotti
- 1 Department of Oral and Maxillofacial Surgery, Hospital de Clínicas de Porto Alegre, School of Dentistry, Universidade Federal do Rio Grande do Sul , Porto Alegre, RS, Brazil
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24
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Oliveira FA, Matos AA, Santesso MR, Tokuhara CK, Leite AL, Bagnato VS, Machado MA, Peres-Buzalaf C, Oliveira RC. Low intensity lasers differently induce primary human osteoblast proliferation and differentiation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 163:14-21. [DOI: 10.1016/j.jphotobiol.2016.08.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 08/04/2016] [Indexed: 01/18/2023]
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Karoussis IK, Kyriakidou K, Psarros C, Lang NP, Vrotsos IA. Nd:YAG laser radiation (1.064 nm) accelerates differentiation of osteoblasts to osteocytes on smooth and rough titanium surfacesin vitro. Clin Oral Implants Res 2016; 28:785-790. [DOI: 10.1111/clr.12882] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Ioannis K. Karoussis
- Department of Periodontology; National and Kapodistriann University of Athens; School of Dentistry; Athens Greece
| | - Kyriaki Kyriakidou
- Department of Periodontology; National and Kapodistriann University of Athens; School of Dentistry; Athens Greece
| | - Costas Psarros
- Department of Physiology; National and Kapodistriann University of Athens; School of Medicine; Athens Greece
| | - Niklaus P. Lang
- Center for Dental Medicine; University of Zurich; Zurich Switzerland
| | - Ioannis A. Vrotsos
- Department of Periodontology; National and Kapodistriann University of Athens; School of Dentistry; Athens Greece
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26
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Chintavalakorn R, Tanglitanont T, Khantachawana A, Viravaidya-Pasuwat K, Santiwong P. The effect of light-emitting diode irradiation at different wavelengths on calcification of osteoblast-like cells in 3D culture. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2015:3513-6. [PMID: 26737050 DOI: 10.1109/embc.2015.7319150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
This study aimed to investigate the effect of four different light-emitting diode (LED) wavelengths on calcification and proliferation of osteoblast-like cells in vitro. MC3T3-E1 cells were seeded within three-dimensional collagen scaffolds and irradiated daily by LED light with peak emission wavelengths of 630-, 680-, 760- and 830-nm at constant fluency of 3.1 J/cm(2) (irradiance intensity 2 mW/cm(2)). Cultures were measured for calcium content at day 0, 7, 14, 21, 28, 35 and 42. The significant enhancement in calcium content was observed at the early stage of culture (days 7 and 14) (p<;0.05). After that, the calcium content of irradiated groups was similar to that of the controls group. This suggests the transient effect of light irradiation on osteoblastic cell calcification. Only 680-nm irradiated samples revealed a significant enhancement of calcium content until the late stages of culture (from days 21 to 42) (p<;0.001). The cyclin D mRNA expression that was investigated 3 hours after stimulation at day3 also show that the 680-nm LED irradiation can enhance cyclin D expression more than others. For enhancing bone mineralization, LED irradiation at the 680-nm is more effective than those at 630-, 760- and 830-nm. Further studies should be investigated in order to obtain the most effective parameters of LLLI on bone regeneration in clinical setting.
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Hamad SA, Naif JS, Abdullah MA. Effect of Diode Laser on Healing of Tooth Extraction Socket: An Experimental Study in Rabbits. J Maxillofac Oral Surg 2015; 15:308-314. [PMID: 27752199 DOI: 10.1007/s12663-015-0842-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 08/28/2015] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES To evaluate the effect of low-level laser therapy on healing of extracted tooth socket of healthy rabbits. DESIGN The sample of this study was 20 male rabbits of 2-2.5 kg weight with age range of 8-12 months. Right and left lower first premolar teeth were extracted. The extraction sockets of lower right first premolar were irradiated with 0.9 W gallium-aluminum-arsenide (GaAlAs) diode laser for 5 min, immediately after extraction and then every 72 h for the next 12 days. The extraction socket of left side were not exposed to laser and served as a control. The animals were sacrificed after 7, 14, 30 and 45 days and the experimental and control sockets were removed from the harvested mandibles and prepared for haematoxylin and eosin staining and Masson's stain. The prepared slides were examined under light microscope for histological and histomorphometric examination. RESULTS The histological examination showed that diode laser-treated sockets demonstrated early formed new bone with faster maturation of primary bone to secondary bone as compared to non-treated control sockets. Histomorphometric analysis revealed a statistically significant increase in the density and volume of trabecular bone in laser-treated sockets than control sockets. CONCLUSION Diode laser application to tooth extraction socket has a positive effect on bone formation.
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Affiliation(s)
- Shehab Ahmed Hamad
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Hawler Medical University, Erbil, Kurdistan Region Iraq
| | - Jandar S Naif
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Duhok University, Duhok, Kurdistan Region Iraq
| | - Mahdi A Abdullah
- Department of Histology, Faculty of Veterinary Medicine, University of Duhok, Duhok, Kurdistan Region Iraq
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Low-level laser therapy improves peri-implant bone formation: resonance frequency, electron microscopy, and stereology findings in a rabbit model. Int J Oral Maxillofac Surg 2014; 44:245-51. [PMID: 25282596 DOI: 10.1016/j.ijom.2014.09.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 06/01/2014] [Accepted: 09/11/2014] [Indexed: 12/17/2022]
Abstract
Previous studies have reported positive effects of low-level laser therapy (LLLT) on bone healing. This study evaluated the effects of LLLT on peri-implant healing in vivo. Thirty-two rabbits had their mandibular left incisors removed, followed by immediate insertion of a dental implant into the fresh socket. Animals were assigned randomly to four groups: control (non-irradiated) or LLLT at three different doses per session: 5J/cm(2), 10J/cm(2), and 20J/cm(2). A GaAlAs laser (830nm, 50mW) was applied every 48h for 13 days, starting immediately after surgery. The implant stability quotient (ISQ) was measured using resonance frequency analysis upon implant insertion and immediately after death, 30 days after the last application. Tissues were prepared for scanning electron microscopy (SEM) and stereology. Variables measured were bone-implant contact (BIC) and bone neoformation within implant threads at three different sites. The results showed better ISQ for the 20J/cm(2) group (P=0.003). BIC values were significantly higher (P<0.05) in the 20J/cm(2) group, on both SEM and stereology. Bone area values were better in the 10J/cm(2) (P=0.036) and 20J/cm(2) (P=0.016) groups compared to the control group. Under these conditions, LLLT enhanced peri-implant bone repair, improving stability, BIC, and bone neoformation. The findings support and suggest parameters for the design of clinical trials using LLLT after implant placement.
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The effects of diode laser (660 nm) on the rate of tooth movements: an animal study. Lasers Med Sci 2013; 30:713-8. [DOI: 10.1007/s10103-013-1407-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 07/22/2013] [Indexed: 10/26/2022]
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30
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Pereira LO, Longo JPF, Azevedo RB. Laser irradiation did not increase the proliferation or the differentiation of stem cells from normal and inflamed dental pulp. Arch Oral Biol 2012; 57:1079-85. [DOI: 10.1016/j.archoralbio.2012.02.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Revised: 02/03/2012] [Accepted: 02/06/2012] [Indexed: 01/09/2023]
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Nogueira GT, Mesquita-Ferrari RA, Souza NHC, Artilheiro PP, Albertini R, Bussadori SK, Fernandes KPS. Effect of low-level laser therapy on proliferation, differentiation, and adhesion of steroid-treated osteoblasts. Lasers Med Sci 2011; 27:1189-93. [PMID: 22190155 DOI: 10.1007/s10103-011-1035-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 11/25/2011] [Indexed: 12/15/2022]
Abstract
There has recently been constant effort to evaluate therapies that may have a positive effect on bone regeneration. However, there are few studies in the literature on the effects of low-level laser therapy (LLLT) involving tissues treated with anabolic steroids. The present study evaluated the effects of LLLT (AsGaAl 780 nm, 3 J/cm(2), 10 mW, beam spot of 0.04 cm(2), total energy 0.12 J) on the proliferation, adhesion, and differentiation of osteoblasts cultured in the presence of nandrolone decanoate (ND). The MTT method was employed to evaluate cell proliferation and adhesion. Cell differentiation was evaluated by measuring alkaline phosphatase activity. There was a significant decrease in cell proliferation in the irradiated group treated with 50 μM ND when compared to the control group, after 48 h. After 72 h, cell proliferation was significantly greater in the control group than in the irradiated groups treated with the steroid at concentrations of 10, 25, and 50 μM. With regard to cell differentiation, alkaline phosphatase activity was significantly higher in the irradiated group treated with 50 μM ND than in the control group, irradiated non-treated group, and irradiated group treated with 25 μM ND. After 60 min of plating, the irradiated non-treated group and irradiated groups treated with the steroid at concentrations of 5, 10, and 25 μM exhibited a significant increase in cell adhesion compared to the control group. LLLT in combination with a high concentration of steroid inhibited cell proliferation, possibly by inducing cell differentiation, while irradiation combined with lower concentrations of the steroid induced an increase in cell adhesion.
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32
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Carroll JD. Photomedicine and LLLT Literature Watch. Photomed Laser Surg 2011; 29:213. [DOI: 10.1089/pho.2011.9916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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