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Meng Y, Huang F, Wang S, Huang X, Lu Y, Li Y, Dong Y, Pei D. Evaluation of dentinal tubule occlusion and pulp tissue response after using 980-nm diode laser for dentin hypersensitivity treatment. Clin Oral Investig 2023; 27:4843-4854. [PMID: 37382717 DOI: 10.1007/s00784-023-05114-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 06/07/2023] [Indexed: 06/30/2023]
Abstract
OBJECTIVES To evaluate the effectiveness of the 980-nm diode laser for dentinal tubule occlusion, measure the intrapulpal temperature, and investigate the dental pulp response. MATERIALS AND METHODS The dentinal samples were randomly divided into G1-G7 groups: control; 980-nm laser irradiation (0.5 W, 10 s; 0.5 W, 10 s × 2; 0.8 W, 10 s; 0.8 W, 10 s × 2; 1.0 W, 10 s; 1.0 W, 10 s × 2). The dentin discs were applied for laser irradiation and analyzed by scanning electron microscopy (SEM). The intrapulpal temperature was measured on the 1.0-mm and 2.0-mm thickness samples, and then divided into G2-G7 groups according to laser irradiation. Moreover, forty Sprague Dawley rats were randomly divided into the laser-irradiated group (euthanized at 1, 7, and 14 days after irradiation) and the control group (non-irradiated). qRT-PCR, histomorphology, and immunohistochemistry analysis were employed to evaluate the response of dental pulp. RESULTS SEM indicated the occluding ratio of dentinal tubules in the G5 (0.8 W, 10 s × 2) and G7 (1.0 W, 10 s × 2) were significantly higher than the other groups (p < 0.05). The maximum intrapulpal temperature rises in the G5 were lower than the standard line (5.5 ℃). qRT-PCR showed that the mRNA expression level of TNF-α and HSP-70 upregulated significantly at 1 day (p < 0.05). Histomorphology and immunohistochemistry analysis showed that, compared with the control group, the inflammatory reaction was slightly higher at the 1 and 7 days (p < 0.05) and decreased to the normal levels at 14 days (p > 0.05). CONCLUSIONS A 980-nm laser at a power of 0.8 W with 10 s × 2 defines the best treatment for dentin hypersensitivity in terms of compromise between the efficacy of the treatment and the safety of the pulp. CLINICAL RELEVANCE The 980-nm laser is an effective option for treating dentin sensitivity. However, we need to ensure the safety of the pulp during laser irradiation.
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Affiliation(s)
- Yuchen Meng
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Fan Huang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Silin Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Xin Huang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Yi Lu
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Yuncong Li
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Yulin Dong
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, China.
| | - Dandan Pei
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, China.
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Naghsh N, Kachuie M, Kachuie M, Birang R. Evaluation of the Effects of 660-nm and 810-nm Low-Level Diode Lasers on the Treatment of Dentin Hypersensitivity. J Lasers Med Sci 2020; 11:126-134. [PMID: 32273952 DOI: 10.34172/jlms.2020.22] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Introduction: Dentin hypersensitivity is a common oral problem that occurs as a short and sharp pain. There are many techniques to treat this condition, the latest of which is laser treatment. The aim of this study was to evaluate the effect of two types of low-power diode lasers (660 nm and 810 nm) on dentin hypersensitivity in order to achieve an acceptable clinical application by adjusting the effective parameters. Methods: In this randomized, double-blind clinical trial, sensitive teeth of 7 patients were divided into three groups with a randomized matching method: group I, treated with 660-nm diode laser irradiation, group II, treated with diode laser 810-nm, and group III, the control group. Irradiation parameters for 660-nm and 810-nm diode lasers were the power of 30 mW and 100 mW respectively, in contact and continuous modes, perpendicular to the tooth surface with a sweeping motion. Treatments were carried out in four sessions at weekly intervals. The data obtained were analyzed with SPSS 22, using one-way repeated measures ANOVA and the LSD (least significant difference) test. The significance level was considered as P≤0.05. Results: There were no significant differences in visual analogue scale (VAS) score changes between the two laser groups after the intervention in the first, second and third weeks compared to the baseline (P>0.05). These changes in the fourth week were significantly higher in the 810-nm laser group compared to the 660-nm laser group (P=0.04), and in the 660-nm laser group, they were more than the control group (P=0.02). The mean VAS scores at 1-week, 1-month and 2-month postoperative intervals were significantly lower in the 810-nm laser group than in the 660-nm laser group, and in the 660-nm laser group, they were less than the control group (P<0.001). Conclusion: The use of 660-nm and 810-nm diode lasers with the power of 30 and 100 mW respectively for 120 seconds was effective in reducing pain in patients with dentin hypersensitivity. However, the effect of the 810-nm laser on reducing the dentin hypersensitivity was more long-lasting than that of the 660-nm laser.
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Affiliation(s)
- Narges Naghsh
- Dental Implants Research Center, Department of Periodontology, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Marzie Kachuie
- Dental Research Center, Department of Orthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Reza Birang
- Dental Research Center, Department of Periodontology, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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Marto CM, Baptista Paula A, Nunes T, Pimenta M, Abrantes AM, Pires AS, Laranjo M, Coelho A, Donato H, Botelho MF, Marques Ferreira M, Carrilho E. Evaluation of the efficacy of dentin hypersensitivity treatments—A systematic review and follow‐up analysis. J Oral Rehabil 2019; 46:952-990. [DOI: 10.1111/joor.12842] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/20/2019] [Accepted: 06/09/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Carlos Miguel Marto
- Institute of Integrated Clinical Practice, Faculty of Medicine University of Coimbra Coimbra Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine University of Coimbra Coimbra Portugal
- CNC.IBILI University of Coimbra Coimbra Portugal
- Experimental Pathology Institute, Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Anabela Baptista Paula
- Institute of Integrated Clinical Practice, Faculty of Medicine University of Coimbra Coimbra Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine University of Coimbra Coimbra Portugal
- CNC.IBILI University of Coimbra Coimbra Portugal
| | - Tiago Nunes
- Institute of Integrated Clinical Practice, Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Miguel Pimenta
- Institute of Integrated Clinical Practice, Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Ana Margarida Abrantes
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine University of Coimbra Coimbra Portugal
- CNC.IBILI University of Coimbra Coimbra Portugal
- Biophysics Institute, Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Ana Salomé Pires
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine University of Coimbra Coimbra Portugal
- CNC.IBILI University of Coimbra Coimbra Portugal
- Biophysics Institute, Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Mafalda Laranjo
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine University of Coimbra Coimbra Portugal
- CNC.IBILI University of Coimbra Coimbra Portugal
- Biophysics Institute, Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Ana Coelho
- Institute of Integrated Clinical Practice, Faculty of Medicine University of Coimbra Coimbra Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine University of Coimbra Coimbra Portugal
- CNC.IBILI University of Coimbra Coimbra Portugal
| | - Helena Donato
- Documentation Department Coimbra Hospital University Centre Coimbra Portugal
| | - Maria Filomena Botelho
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine University of Coimbra Coimbra Portugal
- CNC.IBILI University of Coimbra Coimbra Portugal
- Biophysics Institute, Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Manuel Marques Ferreira
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine University of Coimbra Coimbra Portugal
- CNC.IBILI University of Coimbra Coimbra Portugal
- Institute of Endodontics, Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Eunice Carrilho
- Institute of Integrated Clinical Practice, Faculty of Medicine University of Coimbra Coimbra Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine University of Coimbra Coimbra Portugal
- CNC.IBILI University of Coimbra Coimbra Portugal
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Mir M, Mojahedi SM, Tunér J, Shabani M, Darabi F, Rohban A. The effectiveness of home-use photobiomodulation toothbrush for treating dentin hypersensitivity: A pilot study. Laser Ther 2019; 28:193-198. [PMID: 32009733 DOI: 10.5978/islsm.28_19-or-16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 05/21/2019] [Indexed: 11/06/2022]
Abstract
Background and Aims Dentin hypersensitivity is a frequent oral condition among patients suffering from gingival recession. Recent studies have suggested that photobiomodulation has the potential to reduce inflammation and relieve pain. The present study aims to assess the effectiveness of a new design of photobiomodulation toothbrush with specific irradiation parameters as a homecare device in treating dentin hypersensitivity and to compare its therapeutic effect with that of fluoride varnish. Materials and Methods Thirty patients with gingival recession and dentin hypersensitivity were selected and randomly assigned to three groups of equal size: fluoride varnish, photobiomodulation, and the combination. Dentin pain and hypersensitivity were measured using visual analog scale (VAS) by two distinct tests: the contact test with a periodontal probe and the air blast test on the areas of gingival recession and denuded root; once at baseline and again one month after the initial application of treatments. Laser irradiation was carried out at the wavelength of 660 nm in CW with an output power of 40 mW for 30 seconds per spot (1.2 J per spot, 6 J/cm2 energy density, and 200 mW/cm2 power density), perpendicularly to denuded root surfaces in non-contact mode. Results A significant reduction in dentin pain and hypersensitivity was observed in all three groups. However, the reduction was significantly greater in the combination group. Conclusion At-home treatment of dentin hypersensitivity with photobiomodulation toothbrush is a convenient, safe, and effective method for the management of dentin hypersensitivity.
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Affiliation(s)
- Maziar Mir
- DDS, MSc. Alumnus, RWTH Hospital, Aachen, Germany.
| | - Seyed Masoud Mojahedi
- DDS, Ph.D. Department of Laser, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Jan Tunér
- DDS, PhotoBioModulation Consultant, Sollentuna, Sweden.
| | - Masoud Shabani
- DDS, MSc. Department of Community Dentistry, School of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Fatemeh Darabi
- Ph.D. Department of Public Health, Asadabad School of Medical Sciences, Asadabad, Iran.
| | - Alireza Rohban
- M.Sc. Department of Rehabilitation Management, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran.
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Rezazadeh F, Dehghanian P, Jafarpour D. Laser Effects on the Prevention and Treatment of Dentinal Hypersensitivity: A Systematic Review. J Lasers Med Sci 2018; 10:1-11. [PMID: 31360362 DOI: 10.15171/jlms.2019.01] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction: Dentinal hypersensitivity (DH) is an acute intensive tooth pain which can lead to dental annoyances during eating and drinking. Stimulating exposed dentinal tubules by either kind of thermal, tactile, chemical and/or osmotic stimuli is believed to be the cause of this pain. It is hypothesized that dentinal tubules' orifice occlusion (DOO) can help relieve such dental irritations. Thus, this systematic review was conducted to evaluate the effectiveness of laser application as a prevention and treatment modality on DH reduction. Methods: Electronic databases (MEDLINE, SCOPUS) were searched among randomized clinical trials from January 2007 to December 2016. The extraction of data and quality assessments were carried out by different independent observers. Results: A total of 499 items were found of which3 9 relevant articles were extracted. The profound findings proved lasers' effectiveness as a treatment of DH. Although some of the researches reported no significant difference between laser and other desensitizing agents, most of the studies suggested that better results (both rapid and long-lasting) were obtained in combined modalities. Furthermore, the preventive role of this new technology has been emphasized as well. Nd-YAG (neodymium-doped yttrium aluminum garnet) and diode lasers reduce DH after bleaching. Lasers can also protect cervical restorations from DH due to tubular occlusion. Moreover, it is suggested to apply lasers in relief of DH following scaling and root planning. Nevertheless, a few researchers dispute its beneficence as a result of placebo effect. Conclusion: The results obtained from several studies in the present review revealed that the application of lasers is effective not only in terms of treatment of DH, but also in the prevention of this intensive tooth pain. Among various types of lasers, the application of Nd:YAG laser has shown the best results in DH treatment.
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Affiliation(s)
- Fahimeh Rezazadeh
- Oral and Dental Disease Research Center, Oral & Maxillofacial Medicine department, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Paria Dehghanian
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Dana Jafarpour
- Research Associate, Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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Petrović MS, Kannosh IY, Milašin JM, Mihailović DS, Obradović RR, Bubanj SR, Kesić LG. Clinical, microbiological and cytomorphometric evaluation of low-level laser therapy as an adjunct to periodontal therapy in patients with chronic periodontitis. Int J Dent Hyg 2018; 16:e120-e127. [DOI: 10.1111/idh.12328] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2017] [Indexed: 01/01/2023]
Affiliation(s)
- MS Petrović
- Department of Oral Medicine and Periodontology, Dental Clinic; Faculty of medicine; University of Niš; Niš Serbia
| | - IY Kannosh
- Department of Human Genetics; School of Dental medicine; University of Belgrade; Belgrade Serbia
| | - JM Milašin
- Department of Human Genetics; School of Dental medicine; University of Belgrade; Belgrade Serbia
| | - DS Mihailović
- Institute of Pathological Anatomy; Medical Faculty Nis; University of Niš; Niš Serbia
| | - RR Obradović
- Department of Oral Medicine and Periodontology, Dental Clinic; Faculty of medicine; University of Niš; Niš Serbia
| | - SR Bubanj
- Faculty of Sport and Physical Education; Department of applied kinesiology; University of Niš; Niš Serbia
| | - LG Kesić
- Department of Oral Medicine and Periodontology, Dental Clinic; Faculty of medicine; University of Niš; Niš Serbia
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Matranga D, Matera F, Pizzo G. Evaluating the statistical methodology of randomized trials on dentin hypersensitivity management. J Oral Sci 2017; 59:461-468. [PMID: 28855442 DOI: 10.2334/josnusd.16-0663] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The present study aimed to evaluate the characteristics and quality of statistical methodology used in clinical studies on dentin hypersensitivity management. An electronic search was performed for data published from 2009 to 2014 by using PubMed, Ovid/MEDLINE, and Cochrane Library databases. The primary search terms were used in combination. Eligibility criteria included randomized clinical trials that evaluated the efficacy of desensitizing agents in terms of reducing dentin hypersensitivity. A total of 40 studies were considered eligible for assessment of quality statistical methodology. The four main concerns identified were i) use of nonparametric tests in the presence of large samples, coupled with lack of information about normality and equality of variances of the response; ii) lack of P-value adjustment for multiple comparisons; iii) failure to account for interactions between treatment and follow-up time; and iv) no information about the number of teeth examined per patient and the consequent lack of cluster-specific approach in data analysis. Owing to these concerns, statistical methodology was judged as inappropriate in 77.1% of the 35 studies that used parametric methods. Additional studies with appropriate statistical analysis are required to obtain appropriate assessment of the efficacy of desensitizing agents.
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Affiliation(s)
- Domenica Matranga
- Department of Health Promotion Sciences and Mother-Child Care "G. D' Alessandro", University of Palermo
| | - Federico Matera
- Department of Surgical, Oncological and Oral Sciences, University of Palermo
| | - Giuseppe Pizzo
- Department of Surgical, Oncological and Oral Sciences, University of Palermo
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Martins D, Turnes B, Cidral-Filho F, Bobinski F, Rosas R, Danielski L, Petronilho F, Santos A. Light-emitting diode therapy reduces persistent inflammatory pain: Role of interleukin 10 and antioxidant enzymes. Neuroscience 2016; 324:485-95. [DOI: 10.1016/j.neuroscience.2016.03.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 03/11/2016] [Accepted: 03/14/2016] [Indexed: 11/28/2022]
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The dark art of light measurement: accurate radiometry for low-level light therapy. Lasers Med Sci 2016; 31:789-809. [PMID: 26964800 PMCID: PMC4851696 DOI: 10.1007/s10103-016-1914-y] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 02/16/2016] [Indexed: 12/15/2022]
Abstract
Lasers and light-emitting diodes are used for a range of biomedical applications with many studies reporting their beneficial effects. However, three main concerns exist regarding much of the low-level light therapy (LLLT) or photobiomodulation literature; (1) incomplete, inaccurate and unverified irradiation parameters, (2) miscalculation of ‘dose,’ and (3) the misuse of appropriate light property terminology. The aim of this systematic review was to assess where, and to what extent, these inadequacies exist and to provide an overview of ‘best practice’ in light measurement methods and importance of correct light measurement. A review of recent relevant literature was performed in PubMed using the terms LLLT and photobiomodulation (March 2014–March 2015) to investigate the contemporary information available in LLLT and photobiomodulation literature in terms of reporting light properties and irradiation parameters. A total of 74 articles formed the basis of this systematic review. Although most articles reported beneficial effects following LLLT, the majority contained no information in terms of how light was measured (73 %) and relied on manufacturer-stated values. For all papers reviewed, missing information for specific light parameters included wavelength (3 %), light source type (8 %), power (41 %), pulse frequency (52 %), beam area (40 %), irradiance (43 %), exposure time (16 %), radiant energy (74 %) and fluence (16 %). Frequent use of incorrect terminology was also observed within the reviewed literature. A poor understanding of photophysics is evident as a significant number of papers neglected to report or misreported important radiometric data. These errors affect repeatability and reliability of studies shared between scientists, manufacturers and clinicians and could degrade efficacy of patient treatments. Researchers need a physicist or appropriately skilled engineer on the team, and manuscript reviewers should reject papers that do not report beam measurement methods and all ten key parameters: wavelength, power, irradiation time, beam area (at the skin or culture surface; this is not necessarily the same size as the aperture), radiant energy, radiant exposure, pulse parameters, number of treatments, interval between treatments and anatomical location. Inclusion of these parameters will improve the information available to compare and contrast study outcomes and improve repeatability, reliability of studies.
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West NX, Seong J, Davies M. Management of dentine hypersensitivity: efficacy of professionally and self-administered agents. J Clin Periodontol 2015; 42 Suppl 16:S256-302. [DOI: 10.1111/jcpe.12336] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2014] [Indexed: 11/26/2022]
Affiliation(s)
- Nicola X. West
- Periodontology; Clinical Trials Unit; Bristol Dental School; Bristol UK
| | - Joon Seong
- Periodontology; Clinical Trials Unit; Bristol Dental School; Bristol UK
| | - Maria Davies
- Periodontology; Clinical Trials Unit; Bristol Dental School; Bristol UK
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