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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: 5] [Impact Index Per Article: 5.0] [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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Tan S, Chen S, Lei Q, Ma D. A novel rapidly mineralized biphasic calcium phosphate with high acid-resistance stability for long-term treatment of dentin hypersensitivity. Dent Mater 2023; 39:260-274. [PMID: 36710096 DOI: 10.1016/j.dental.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 01/15/2023] [Accepted: 01/22/2023] [Indexed: 01/29/2023]
Abstract
OBJECTIVES Treating dental hypersensitivity (DH) rapidly and maintaining long-term effectiveness remains challenging. We aimed to address this problem by fabricating a novel rapidly mineralized biphasic calcium phosphate (RMBCP), which could rapidly elicit mineralization to form hydroxyapatite (HA) and perform excellent acid-resistant stability, thus effectively blocking the exposed dental tubules and protecting them from acid attack. METHODS RMBCP was firstly synthesized by precisely adjusting the molar ratio of acetic acid and calcium hydroxide and characterized by X-ray diffraction (XRD), X-ray fluorescence microprobe (XRF), Fourier-transform infrared (FTIR) spectrometer, scanning electron microscope (SEM), and transmission electron microscope (TEM). Subsequently, using a commercialized desensitizing agent, 45S5 bioglass (BG), as the control group, the mineralization performance of RMBCP was investigated in simulated body fluid (SBF), Dulbecco's modified eagle medium (DMEM), and even slightly acidic artificial saliva (pH=6.6). Moreover, the biocompatibility of RMBCP was studied. Finally, the tubule occlusion effect and acid-resistant stability of RMBCP were evaluated in vitro and in vivo. RESULTS The rapid mineralization behavior of RMBCP could easily adhere to the dentin surface and block the dentinal tubules completely in vitro and in vivo within 7days. RMBCP performed high acid-resistant stability to maintain the long-term therapeutic effect of DH treatment. SIGNIFICANCE Developing novel bioactive calcium phosphate materials with the ability to trigger mineralization for HA formation rapidly will be an effective strategy for the long-term treatment of dentin hypersensitivity.
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Affiliation(s)
- Shenglong Tan
- Department of Endodontics, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong, China; School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
| | - Shangsi Chen
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
| | - Qian Lei
- Department of Endodontics, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong, China; School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
| | - Dandan Ma
- Department of Endodontics, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong, China; School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China.
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Dalmolin AC, Acevedo LFA, Campos LA, Dechandt ICJ, Serbena FC, Zanotto ED, Pochapski MT, Arrais CAG, Campagnoli EB, Santos FAD. Effect of bioactive glasses used as dentin desensitizers on the dentin-pulp complex in rats. Dent Mater J 2022; 41:874-881. [PMID: 35934800 DOI: 10.4012/dmj.2022-017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Bioactive glasses have been recommended for the occlusion of dentinal tubules in treating cervical dentin hypersensitivity. This study evaluates an in vivo model of dentin exposure, and tests the efficacy of bioglass treatments. Thirty male Wistar rats received gingival recession surgery on the upper left first molar. The treatments were applied over the surface of the exposed dentin every 4 days for 28 days. The groups were as follows: Naive; Gingival recession; Cavity varnish; Biosilicate®; Strontium bioglass; and Potassium bioglass. Changes in the dentin-pulp complex, and the presence of substance P, were evaluated through hematoxylin-eosin and immunohistochemical staining. The groups had similar results. Teeth with exposed dentinal tubules in rats showed a typical pattern in the dentin-pulp complex and immunotracing for substance P. The materials did not cause pulp damage. The effects of gingival recession and open dentinal tubules on pulp tissue require further clarification.
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Šutulović N, Grubač Ž, Šuvakov S, Jerotić D, Puškaš N, Macut D, Rašić-Marković A, Simić T, Stanojlović O, Hrnčić D. Experimental Chronic Prostatitis/Chronic Pelvic Pain Syndrome Increases Anxiety-Like Behavior: The Role of Brain Oxidative Stress, Serum Corticosterone, and Hippocampal Parvalbumin-Positive Interneurons. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6687493. [PMID: 33815658 PMCID: PMC7990537 DOI: 10.1155/2021/6687493] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 12/21/2022]
Abstract
Mechanisms of the brain-related comorbidities in chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) are still largely unknown, although CP/CPPS is one of the major urological problems in middle-aged men, while these neuropsychological incapacities considerably diminish life quality. The objectives of this study were to assess behavioral patterns in rats with CP/CPPS and to determine whether these patterns depend on alterations in the brain oxidative stress, corticosterone, and hippocampal parvalbumin-positive (PV+) interneurons. Adult male Wistar albino rats from CP/CPPS (intraprostatic injection of 3% λ-carrageenan, day 0) and sham (0.9% NaCl) groups were subjected to pain and anxiety-like behavior tests (days 2, 3, and 7). Afterwards, rats were sacrificed and biochemical and immunohistochemical analyses were performed. Scrotal allodynia and prostatitis were proven in CP/CPPS, but not in sham rats. Ethological tests (open field, elevated plus maze, and light/dark tests) revealed significantly increased anxiety-like behavior in rats with CP/CPPS comparing to their sham-operated mates starting from day 3, and there were significant intercorrelations among parameters of these tests. Increased oxidative stress in the hippocampus, thalamus, and cerebral cortex, as well as increased serum corticosterone levels and decreased number of hippocampal PV+ neurons, was shown in CP/CPPS rats, compared to sham rats. Increased anxiety-like behavior in CP/CPPS rats was significantly correlated with these brain biochemical and hippocampal immunohistochemical alterations. Therefore, the potential mechanisms of observed behavioral alterations in CP/CPPS rats could be the result of an interplay between increased brain oxidative stress, elevated serum corticosterone level, and loss of hippocampal PV+ interneurons.
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Affiliation(s)
- Nikola Šutulović
- Institute of Medical Physiology “Richard Burian”, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
| | - Željko Grubač
- Institute of Medical Physiology “Richard Burian”, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
| | - Sonja Šuvakov
- Institute of Clinical and Medical Biochemistry, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
| | - Djurdja Jerotić
- Institute of Clinical and Medical Biochemistry, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
| | - Nela Puškaš
- Institute of Histology and Embryology “Aleksandar Đ. Kostić”, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
| | - Djuro Macut
- Clinic of Endocrinology, Diabetes and Metabolic Disease, CCS, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
| | - Aleksandra Rašić-Marković
- Institute of Medical Physiology “Richard Burian”, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
| | - Tatjana Simić
- Institute of Clinical and Medical Biochemistry, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
| | - Olivera Stanojlović
- Institute of Medical Physiology “Richard Burian”, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
| | - Dragan Hrnčić
- Institute of Medical Physiology “Richard Burian”, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
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de Oliveira VT, Ferrara-Jr JI, Matielo HA, da Silva Alves A, Britto LR, Aranha ACC, Dale CS. Involvement of substance P, osteopontin and satellite glial cells on photobiomodulation-induced antinociceptive effect in an experimental model of dentin hypersensitivity. Lasers Med Sci 2021; 36:1297-1305. [PMID: 33452567 DOI: 10.1007/s10103-021-03246-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/04/2021] [Indexed: 11/26/2022]
Abstract
The aim of this work was to investigate the involvement of substance P (SP), osteopontin (OPN), and satellite glial cells (SGC) on photobiomodulation-induced (PBM) antinociceptive effect in an experimental model of dentin hypersensitivity (DH). Rats ingested isotonic drink (ID, pH 2.87) for 45 consecutive days and after this period received PBM irradiation at λ660 nm or λ808 nm (1 J, 3.5 J/cm2, 100 mW, 10 s, 0.028 cm2, continuous wave, 3 consecutive daily sessions), and were evaluated for nociceptive behavior 24, 48, 72 h, and 14 days after laser treatments. ID ingestion induced an increase on thermal sensitivity of DH characteristics in rats that was completely reversed by PBM treatment at both 660 and 808 nm. Immunohistochemical analysis revealed increased SP expression at both dentin-pulp complex (DPC) and trigeminal ganglia (TG) of DH-rats which did not occur in PBM groups by PBM treatment. Also, the increase of glial fibrillary acidic protein (GFAP) observed in the TG of DH-rats was also reversed by PBM treatment. Finally, PBM at both 660 and 808 nm increased OPN expression in the dentin-pulp complex of DH-rats after 14 days of PBM treatment. All in all, this data demonstrates that PBM reverses nociception in a DH experimental model by inhibiting neurogenic inflammation and inducing a regenerative response.
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Affiliation(s)
- Victhor Teixeira de Oliveira
- Department of Anatomy, Laboratory of Neuromodulation of Experimental Pain, University of São Paulo, Av Lineu Prestes 2415, ICB III, São Paulo, 05508-000, Brazil
| | - João Ignácio Ferrara-Jr
- Department of Anatomy, Laboratory of Neuromodulation of Experimental Pain, University of São Paulo, Av Lineu Prestes 2415, ICB III, São Paulo, 05508-000, Brazil
| | - Heloísa Alonso Matielo
- Department of Anatomy, Laboratory of Neuromodulation of Experimental Pain, University of São Paulo, Av Lineu Prestes 2415, ICB III, São Paulo, 05508-000, Brazil
| | - Adilson da Silva Alves
- Department of Physiology, Laboratory of Cellular Neurobiology, University of São Paulo, Av Lineu Prestes 1524, ICB I, São Paulo, 05508-000, Brazil
| | - Luiz Roberto Britto
- Department of Physiology, Laboratory of Cellular Neurobiology, University of São Paulo, Av Lineu Prestes 1524, ICB I, São Paulo, 05508-000, Brazil
| | - Ana Cecilia Corrêa Aranha
- Department of Restorative Dentistry, School of Dentistry, Special Laboratory of Lasers in Dentistry (LELO), University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
| | - Camila Squarzoni Dale
- Department of Anatomy, Laboratory of Neuromodulation of Experimental Pain, University of São Paulo, Av Lineu Prestes 2415, ICB III, São Paulo, 05508-000, Brazil.
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Gao Y, Huang P, Chen R, Wang M, Wang Y, Sa Y, Jiang T. Mesoporous calcium silicate nanoparticles for superficial dental tissue reconstruction, in vitro and in vivo. RSC Adv 2021; 11:24681-24693. [PMID: 35481019 PMCID: PMC9036881 DOI: 10.1039/d1ra02114a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/28/2021] [Indexed: 11/21/2022] Open
Abstract
The underlying dentin could be exposed to a humid atmosphere filled with bacteria if the covering enamel layer is broken because of external chemical and physical conditions. Accordingly, some diseases like bacterial invasion and dentin hypersensitivity often occur, which impact the daily life of patients. The study is aimed at evaluating the occluding effects of mesoporous calcium silicate nanoparticles (MCSNs) on the dentinal tubules in vitro and in vivo, as well as the antibacterial property and drug delivery ability when loaded with chlorhexidine (CHX) in vitro. MCSNs were synthesized according to the standard protocol. After a series of complimentary evaluations in vitro and in vivo, it was found that MCSNs and CHX–MCSNs could continually form apatite-like enamel layers on the exposed dentinal tubules and significantly reduced dentin permeability both in vitro and in vivo. Besides, MCSN and CHX–MCSN possessed low cytotoxicity in vitro, and only mild pulp inflammation was observed in two MCSNs containing groups in vivo. In addition, MCSN loaded with CHX released CHX sustainably and revealed a significant antibacterial effect against E. faecalis in vitro. Therefore, the results suggest that MCSN could be used as a promising biomaterial to occlude the dentinal tubules and carry antibiotics for avoiding further pulp infection. MCSNs could be used as a promising biomaterial for occluding the dentinal tubules in vitro and in vivo. Also, the outstanding drug delivery and antibacterial properties enable it to carry antibiotics easily for inhibiting deeper pulp infection.![]()
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Affiliation(s)
- Yixue Gao
- Department of Prosthodontics
- The Affiliated Stomatological Hospital of Nanjing Medical University
- Jiangsu Province Key Laboratory of Oral Diseases
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine
- PR China
| | - Pin Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST)
- Key Laboratory of Oral Biomedicine Ministry of Education
- School & Hospital of Stomatology
- Wuhan University
- Wuhan 430079
| | - Ruiying Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST)
- Key Laboratory of Oral Biomedicine Ministry of Education
- School & Hospital of Stomatology
- Wuhan University
- Wuhan 430079
| | - Man Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST)
- Key Laboratory of Oral Biomedicine Ministry of Education
- School & Hospital of Stomatology
- Wuhan University
- Wuhan 430079
| | - Yining Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST)
- Key Laboratory of Oral Biomedicine Ministry of Education
- School & Hospital of Stomatology
- Wuhan University
- Wuhan 430079
| | - Yue Sa
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST)
- Key Laboratory of Oral Biomedicine Ministry of Education
- School & Hospital of Stomatology
- Wuhan University
- Wuhan 430079
| | - Tao Jiang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST)
- Key Laboratory of Oral Biomedicine Ministry of Education
- School & Hospital of Stomatology
- Wuhan University
- Wuhan 430079
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Guanipa Ortiz MI, Alencar CDM, Freitas De Paula BL, Alves EB, Nogueira Araújo JL, Silva CM. Effect of the casein phosphopeptide-amorphous calcium phosphate fluoride (CPP-ACPF) and photobiomodulation (PBM) on dental hypersensitivity: A randomized controlled clinical trial. PLoS One 2019; 14:e0225501. [PMID: 31790452 PMCID: PMC6886796 DOI: 10.1371/journal.pone.0225501] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 11/04/2019] [Indexed: 12/29/2022] Open
Abstract
Objective This randomized controlled clinical trial aimed to evaluate the effect of the casein phosphopeptide-amorphous calcium phosphate fluoride (CPP-ACPF) and photobiomodulation (PBM) in the treatment of dentin hypersensitivity (DH), and the impact of this on the health-related quality of life (HRQL). Methods Eighty teeth with DH were randomized into four groups and received three treatment sessions: PLACEBO = placebo + LASER application mimicking; CPP-ACPF = CPP-ACPF + LASER application mimicking; PBM = placebo + LASER active application; CPP-ACPF+PBM = CPP-ACPF + LASER active application. Tactile (exploratory probe) and evaporative (triple syringe) stimuli were used to measure DH and were recorded with the aid of a visual analogue scale (VAS) after the 1st, 2nd and 3rd treatment sessions and one-month follow-up. The HRQL was recorded in the DH experience questionnaire (DHEQ). Results The intragroup comparison showed a significant reduction in DH (p < 0.05) with both stimuli after one-month follow-up. The intergroup comparison with the evaporative stimulus showed that CPP-ACPF+PBM significantly reduced DH when compared to the rest of treatments, after one-month follow-up. CPP-ACPF+PBM group statistically differed from the other treatment groups in the DHEQ evaluation after one-month follow-up. Conclusion After one-month follow-up, the association of CPP-ACPF with PBM was effective in the reduction of DH and promoted a positive impact on the HRQL of the participants of this study.
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Affiliation(s)
| | | | | | | | | | - Cecy Martins Silva
- School of Dentistry, Federal University of Pará, Belém, Pará, Brazil
- * E-mail:
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Braga TMB, Braga DN, Moreno-Carvalho E, Bauer JRDO, Turssi CP. Calcium Pre-Rinse: Effect on permeability of dentin tubules by fluoride rinse. J Clin Exp Dent 2019; 11:e303-e309. [PMID: 31110606 PMCID: PMC6522103 DOI: 10.4317/jced.55382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 02/04/2019] [Indexed: 12/02/2022] Open
Abstract
Background The aim of this study was to evaluate whether calcium (CaL) solution would enhance the capacity of sodium fluoride (NaF) solution in reducing the permeability of hypersensitive dentin. Material and Methods Thirty-two Wistar rats ingested for 45 days acidic isotonic drink (Gatorade, pH 2.7) ad libitum to induce dental erosion. Then, molar teeth received a cold stimulus to confirm the presence and score the intensity of dentin hypersensitivity based on body contraction and noise. Animals were allocated to four groups (n=8), according to the solution(s) applied in the oral cavity: NaF (12 mmol/L, 1 min); CaL (150 mmol/L, 1 min); CaL followed by NaF (CaF+NaF, 1 min each); distilled water (DW, 1 min, as negative control). The animals were euthanized and the mandibles dissected into hemimandibles, which were sealed with sticky wax, except for the occlusal surface of the molar teeth. The samples were immersed in 10% copper sulphate solution and in 1% dithioxamide alcoholic solution (25 min each). The samples were sectioned longitudinally and imaged under optical microscope. Then, dentin permeability was measured as the area of copper ion penetration, using ImageJ software. Photomicrographs were obtained by scanning electron microscopy. Results 68.7% of animals had body contraction associated or not with noise. One-way ANOVA followed by Tukey´s test indicated that groups treated with NaF solution, whether or not preceded by CaL solution, presented lower permeability than the remaining groups [CaL+NaF: 3405.7 μm2 (±1796.4); NaF: 4111.7 μm2 (±2450.6); CaL: 42254.6 μm2 (±30399.2); DW: 37064.6 μm2 (±21994.4)]. Photomicrographs showed that CaL+NaF group presented an increased proportion of occluded dentin tubules in comparison to the NaF-only group. Conclusions Although qualitatively there seems to be a benefit in using CaL pre-rinse, this solution did not quantitatively enhance the capacity of NaF in reducing permeability of hypersensitive dentin. Key words:Dentin hypersensitivity, Fluoride, Calcium lactate, Animal model.
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Affiliation(s)
- Tacíria-Machado-Bezerra Braga
- DDS, MSc, PhD student, Faculdade São Leopoldo Mandic - Instituto de Pesquisas São Leopoldo Mandic, Campinas, SP, Brazil; Assistant professor, Faculty of Dentistry, CEUMA University, São Luís, MA, Brazil
| | | | | | | | - Cecilia-Pedroso Turssi
- DDS, MSc, PhD, Professor, Faculdade São Leopoldo Mandic - Instituto de Pesquisas São Leopoldo Mandic, Campinas, SP, Brazil
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Novel calcium encapsulated mesocellular siliceous foams for crystal growth in dentinal tubules. J Dent 2019; 83:61-66. [PMID: 30825570 DOI: 10.1016/j.jdent.2019.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 02/06/2019] [Accepted: 02/13/2019] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES The aim of this study was to investigate the novel mesocellular siliceous foams (MCF) containing CaCO3 nanoparticles (denoted as CMCF) combined with phosphoric acid could occlude dentinal tubules through the formation of biomimetic crystal barrier. METHODS Ultrastructures of MCF and CMCF were examined by transmission electron microscopy (TEM). Elemental components were analyzed with energy dispersive X-ray spectrometry (EDX). CMCF was mixed with distilled water, 10%, 20% and 30% phosphoric acid then applied on dentine discs. Crystals were characterized by X-ray powder diffractometry (XRD). The sealing efficacy of the dentinal tubules was examined by scanning electron microscopy. RESULTS TEM images showed MCF presented a pore size of approximately 30.0 nm and CMCF contained abundant nano-CaCO3. Sealing efficacy showed that CMCF, when reacted with 30% phosphoric acid, would form crystals in the dentinal tubules to a depth of 83.2 ± 17.6 μm at an occlusion percentage of 75.6 ± 12.8% on average; both occlusion percentage and depth were higher than those obtained with 10% or 20% phosphoric acid (p < 0.05). The results of XRD and EDS indicated that the crystal growth in the dentinal tubules could be transformed into the biomimetic crystals. CONCLUSION This study showed that the CMCF with 30% phosphoric acid could effectively occlude the dentinal tubules through the formation of biomimetic crystal barrier. CLINICAL SIGNIFICANCE The novel CMCF combined with phosphoric acid may have potential for the treatment of dentine hypersensitivity.
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Tonetti Ciaramicoli M, Kabadayan F, Bernardi MM, Barbosa Suffredini I, Coury Saraceni CH. Diazepam as attenuator of pain induced by dentin hypersensitivity in rats exposed to stress. Arch Oral Biol 2018; 97:165-169. [PMID: 30391792 DOI: 10.1016/j.archoralbio.2018.10.033] [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: 04/26/2018] [Revised: 10/22/2018] [Accepted: 10/26/2018] [Indexed: 11/25/2022]
Abstract
The pain in dentin hypersensitivity (DH) has distinct sensory and emotional origins, with variations that occur in different intensities for each individual. The aim of this study is to evaluate the effects of diazepam in the attenuation of the pain induced by DH. DESIGN Fifty male Wistar rats were divided into five groups: control group received water ad libitum (C); stress group received water ad libitum plus stress (S); DH induced by erosion challenge with isotonic solution ad libitum (G); DH and stress (GS); and DH, stress and diazepam (GSD) groups. Animals of the GS group were exposed to the New York Subway Stress Model. Animals treated with diazepam (GSD group) received 1 mg/kg every 3 days, from the 15th day of treatment until the end of the stress-inducing period. The body weights of rats were weekly registered. After 30 days, all groups were submitted to the DH test, which was assessed using cold water stimuli, and were graded 0, 0.5, 1, 2, or 3. Dental elements were evaluated using scanning electron microscopy (SEM). RESULTS 1) Groups G and GS presented the highest DH scores, which confirms that stress increased pain response; 2) GSD group had significantly reduced DH scores compared to G and GS groups; 3) SEM of dental elements showed exposed dentin tubules in G, GS, and GSD groups, as expected. CONCLUSIONS diazepam attenuated pain induced by dentin hypersensitivity in rats exposed to stress.
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Affiliation(s)
- Márcia Tonetti Ciaramicoli
- Graduate Program in Dentistry, Paulista University - UNIP, Av. Dr. Bacelar, 1212, Vila Clementino, 04026-002, São Paulo, SP, Brazil
| | - Fernanda Kabadayan
- Graduate Program in Dentistry, Paulista University - UNIP, Av. Dr. Bacelar, 1212, Vila Clementino, 04026-002, São Paulo, SP, Brazil
| | - Maria Martha Bernardi
- Graduate Program in Dentistry, Paulista University - UNIP, Av. Dr. Bacelar, 1212, Vila Clementino, 04026-002, São Paulo, SP, Brazil
| | - Ivana Barbosa Suffredini
- Graduate Program in Dentistry, Paulista University - UNIP, Av. Dr. Bacelar, 1212, Vila Clementino, 04026-002, São Paulo, SP, Brazil; Center for Research in Biodiversity, Paulista University - UNIP, Av. Paulista, 900, 1st floor, Bela Vista, 01310-100, São Paulo, Brazil
| | - Cintia Helena Coury Saraceni
- Graduate Program in Dentistry, Paulista University - UNIP, Av. Dr. Bacelar, 1212, Vila Clementino, 04026-002, São Paulo, SP, Brazil.
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Wolffenbüttel AN, Zamboni A, Becker G, Dos Santos MK, Borille BT, de Cássia Mariotti K, Fagundes AC, de Oliveira Salomón JL, Coelho VR, Ruiz LV, de Moura Linck V, Dallegrave E, Cano P, Esquifino AI, Leal MB, Limberger RP. Citrus essential oils inhalation by mice: Behavioral testing, GCMS plasma analysis, corticosterone, and melatonin levels evaluation. Phytother Res 2017; 32:160-169. [PMID: 29168240 DOI: 10.1002/ptr.5964] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/30/2017] [Accepted: 10/03/2017] [Indexed: 11/11/2022]
Abstract
The use of orange essential oils (EOs) as a complementary treatment is very common in Brazilian popular culture. The levels of melatonin (MEL) and corticosterone (CORT) hormones were investigated simultaneously, by the Luminex™ immunoassay system in mice plasma, after Citrus aurantium and Citrus sinensis EOs inhalation for 30 min. The plasma was analyzed by headspace through gas chromatography coupled to mass spectrometry for investigation of the EO components. Mice were submitted to behavioral testing to research anxiolytic-like, sedative, and antidepressant-like effects. The inhalation of atmosphere obtained from vaporization of 10% solution of this Citrus EO separately did not affect MEL or CORT plasma levels; that is, the MEL and CORT levels did not present variation in function of the EO in the schedule used. On the other hand, the imipramine positive control used altered the level of MEL as expected. The EO constituents were detected in plasma at different ratios that is present in inhaled EO. Behavioral tests showed that the inhalation of 10% C. sinensis EO presents an anxiolytic-like and sedative effect. Thus, C. sinensis EO can be a valuable tool for treatment of the anxiety disturbs, apparently without interference with MEL and CORT physiological levels.
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Affiliation(s)
- Adriana Nunes Wolffenbüttel
- Postgraduate Program in Pharmaceutical Sciences, Toxicology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Amanda Zamboni
- Postgraduate Program in Pharmaceutical Sciences, Toxicology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Gabriela Becker
- Department of Pharmacology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Maíra Kerpel Dos Santos
- Postgraduate Program in Pharmaceutical Sciences, Toxicology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Bruna Tassi Borille
- Postgraduate Program in Pharmaceutical Sciences, Toxicology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Kristiane de Cássia Mariotti
- Postgraduate Program in Pharmaceutical Sciences, Toxicology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Ana Claudia Fagundes
- Postgraduate Program in Pharmaceutical Sciences, Toxicology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Vanessa Rodrigues Coelho
- Department of Pharmacology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Leire Virto Ruiz
- Department of Biochemistry and Molecular Biology III, School of Medicine, Complutense University, Madrid, Spain
| | - Viviane de Moura Linck
- Department of Pharmacology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Eliane Dallegrave
- Department of Pharmacosciences, Federal University of Health Sciences, Porto Alegre, Brazil
| | - Pilar Cano
- Department of Biochemistry and Molecular Biology III, School of Medicine, Complutense University, Madrid, Spain
| | - Ana Isabel Esquifino
- Department of Biochemistry and Molecular Biology III, School of Medicine, Complutense University, Madrid, Spain
| | - Mirna Bainy Leal
- Department of Pharmacology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Renata Pereira Limberger
- Postgraduate Program in Pharmaceutical Sciences, Toxicology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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12
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Barbosa FM, Cabral D, Kabadayan F, Bondan EF, de Fátima Monteiro Martins M, Kirsten TB, Bonamin LV, Queiroz-Hazarbassanov N, Martha Bernardi M, Saraceni CHC. Depressive behavior induced by unpredictable chronic mild stress increases dentin hypersensitivity in rats. Arch Oral Biol 2017; 80:164-174. [DOI: 10.1016/j.archoralbio.2017.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 04/02/2017] [Accepted: 04/07/2017] [Indexed: 12/15/2022]
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13
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Stress and its role in the dentin hypersensitivity in rats. Arch Oral Biol 2017; 73:151-160. [DOI: 10.1016/j.archoralbio.2016.10.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 08/22/2016] [Accepted: 10/11/2016] [Indexed: 11/24/2022]
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14
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Chiang YC, Lin HP, Chang HH, Cheng YW, Tang HY, Yen WC, Lin PY, Chang KW, Lin CP. A mesoporous silica biomaterial for dental biomimetic crystallization. ACS NANO 2014; 8:12502-12513. [PMID: 25482513 DOI: 10.1021/nn5053487] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The loss of overlying enamel or cementum exposes dentinal tubules and increases the risk of several dental diseases, such as dentin hypersensitivity (causing sharp pain and anxiety), caries, and pulp inflammation. This paper presents a fast-reacting, more reliable and biocompatible biomaterial that effectively occludes exposed dentinal tubules by forming a biomimetic crystalline dentin barrier. To generate this biomaterial, a gelatin-templated mesoporous silica biomaterial (CaCO3@mesoporous silica, CCMS) containing nanosized calcium carbonate particles is mixed with 30% H3PO4 at a 1/1 molar ratio of Ca/P (denoted as CCMS-HP), which enables Ca2+ and PO4(3-)/HPO4(2-) ions to permeate the dentinal tubules and form dicalcium phosphate dihydrate (DCPD), tricalcium phosphate (TCP) or hydroxyapatite (HAp) crystals at a depth of approximately 40 μm (sub-μ-CT and nano-SEM/EDS examinations). In vitro biocompatibility tests (WST-1 and lactate dehydrogenase) and ALP assays show high cell viability and mineralization ability in a transwell dentin disc model treated with CCMS-HP (p<0.05). The in vivo efficacy and biocompatibility analyses of the biomaterial in an animal model reveal significant crystal growth (DCPD, TCP or HAp-like) and no pulp irritation after 70 days (p<0.05). The developed CCMS-HP holds great promise for treating exposed dentin by growing biomimetic crystals within dentinal tubules. These findings demonstrate that the mesoporous silica biomaterials presented here have great potential for serving as both a catalyst and carrier in the repair or regeneration of dental hard tissue.
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Affiliation(s)
- Yu-Chih Chiang
- School of Dentistry and Graduate Institute of Clinical Dentistry, National Taiwan University and National Taiwan University Hospital , No. 1, Chang-Te Street, Taipei 10016, Taiwan
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