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Dizaj SM, Rezaei Y, Namaki F, Sharifi S, Abdolahinia ED. Effect of curcumin-containing nanofibrous gelatin-hydroxyapatite scaffold on proliferation and early osteogenic differentiation of dental pulp stem cells. Pharm Nanotechnol 2023:PNT-EPUB-133741. [PMID: 37592779 DOI: 10.2174/2211738511666230817102159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 06/11/2023] [Accepted: 07/13/2023] [Indexed: 08/19/2023]
Abstract
BACKGROUND In recent years, the electrospinning method has received attention because of its usage in producing a mimetic nanocomposite scaffold for tissue regeneration. Hydroxyapatite and gelatin are suitable materials for producing scaffolds, and curcumin has the osteogenesis induction effect. AIMS This study aimed to evaluate the toxicity and early osteogenic differentiation stimulation of nanofibrous gelatin-hydroxyapatite scaffold containing curcumin on dental pulp stem cells (DPSCs). OBJECTIVE The objective of the present investigation was the evaluation of the proliferative effect and primary osteogenic stimulation of DPSCs with a nanofibrous gelatin-hydroxyapatite scaffold containing curcumin. Hydroxyapatite and gelatin were used as suitable and biocompatible materials to make a scaffold suitable for stimulating osteogenesis. Curcumin was added to the scaffold as an osteogenic differentiation-enhancing agent. METHODS The effect of nano-scaffold on the proliferation of DPSCs was evaluated. The activity of alkaline phosphatase (ALP) as the early osteogenic marker was considered to assess primary osteogenesis stimulation in DPSCs. RESULTS The nanofibrous gelatin-hydroxyapatite scaffold containing curcumin significantly increased the proliferation and the ALP activity of DPSCs (P<0.05). The proliferative effect was insignificant in the first 2 days, but the scaffold increased cell proliferation by more than 40% in the fourth and sixth days. The prepared scaffold increased the activity of the ALP of DPSCs by 60% compared with the control after 14 days (P<0.05). CONCLUSION The produced nanofibrous gelatin-hydroxyapatite scaffold containing curcumin can be utilized as a potential candidate in tissue engineering and regeneration of bone and tooth. FUTURE PROSPECTS The prepared scaffold in the present study could be a beneficial biomaterial for tissue engineering and the regeneration of bone and tooth soon.
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Affiliation(s)
- Solmaz Maleki Dizaj
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yashar Rezaei
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Namaki
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Simin Sharifi
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elaheh Dalir Abdolahinia
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
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Jafarpour Mahalleh A, Mesgarzadeh AH, Jarolmasjed S, Soltani Somee A, Khordadmehr M, Rezaei Y, Maleki Dizaj S, Shahi S. Extracorporeal Shock Wave Therapy as a Helpful Method for Rapid Osseointegration of Dental Implants: Animal Study. Biomimetics (Basel) 2023; 8:biomimetics8020137. [PMID: 37092389 PMCID: PMC10123648 DOI: 10.3390/biomimetics8020137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/19/2023] [Accepted: 03/25/2023] [Indexed: 03/30/2023] Open
Abstract
The aim of this study was to assess the multi-phasic use of extracorporeal shock wave therapy (ESWT) as an adjuvant treatment to accelerate the osseointegration of titanium dental implants. Initially, twelve titanium mini-screws were inserted in femur bones of six New Zealand rabbits in three groups; the one-time treated group, the three-time treated group, and the control group (without ESWT). Then, 1800 focused shockwaves with an energy flux density of 0.3 mJ/mm2 in every phase were used. Fourteen days after the last phase of ESWT, the animals were sacrificed to assess the osseointegration of screws via micro-computed tomography scan (micro-CT scan), biomechanical pull-out test, and histopathological analysis. Pull-out and histopathology analysis showed that the ESWT significantly increased bone regeneration and osseointegration around the implants compared to the control group (p < 0.05). Moreover, the pull-out test confirmed that the three-time treated screws needed more force to pull the bone out compared to the other two groups (p < 0.05). The mean bone volume fraction between the control group, the one-time treated group, and the three-time treatment group were not statistically significant (p > 0.05) according to the micro-CT scan results. Based on our results, ESWT can be suggested as a non-invasive and cost-effective adjuvant for osseointegration of dental implants. However, more in vivo studies and clinical trials are needed for validation of this finding.
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Behroozian A, Rezaei Y, Abdulkarim BA, Moghaddam SF. Contrary to an old belief, four corner curing does not provide more bond strength or polymerization in bonding of orthodontic metal brackets. APOS 2022. [DOI: 10.25259/apos_18_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objectives:
The study aimed to investigate the effect of the direction of light curing on bond strength and adhesive polymerization of orthodontic metal brackets.
Material and Methods:
In this in vitro investigation, 75 extracted human upper premolars were randomly divided into three groups according to the curing direction: Group A (20 s curing from the occlusal side of the bracket), Group B (10 s from occlusal and 10 s from gingival), and Group C (5 s from four corners of the bracket). After bonding, the brackets were subjected to a shear bond strength (SBS) test performed with a universal testing machine. Moreover, Fourier transform infrared spectroscopy (FTIR) analysis was used to find the polymerization ratio of the adhesives in each group. Kruskal–Wallis test was to statistical analysis of SBS and FTIR data, respectively, at the 0.05 level of significance.
Results:
The difference in SBS of metal brackets was not statistically significant between the groups (P > 0.05). However, the difference in polymerization ratio was significant between all groups where the highest and lowest ratio belonged to Groups A and B, respectively (P < 0.05).
Conclusion:
Curing metal brackets from four corners do not increase their bond strength and/or polymerization.
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Affiliation(s)
- Ahmad Behroozian
- Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran,
| | - Yashar Rezaei
- Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran,
| | - Barham Ahmed Abdulkarim
- Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran,
| | - Saeid Foroughi Moghaddam
- Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran,
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Sharifi S, Zaheri Khosroshahi A, Maleki Dizaj S, Rezaei Y. Preparation, Physicochemical Assessment and the Antimicrobial Action of Hydroxyapatite-Gelatin/Curcumin Nanofibrous Composites as a Dental Biomaterial. Biomimetics (Basel) 2021; 7:4. [PMID: 35076470 PMCID: PMC8788529 DOI: 10.3390/biomimetics7010004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 12/21/2021] [Accepted: 12/24/2021] [Indexed: 12/13/2022] Open
Abstract
In this study, we prepared and evaluated hydroxyapatite-gelatin/curcumin nanofibrous composites and determined their antimicrobial effects against Escherichia coli, Staphylococcus aureus, and Streptococcus mutans. Hydroxyapatite-gelatin/curcumin nanofibrous composites were prepared by the electrospinning method. The prepared nanocomposites were then subjected to physicochemical studies by the light scattering method for their particle size, Fourier transmission infrared spectroscopy (FTIR) to identify their functional groups, X-ray diffraction (XRD) to study their crystallinity, and scanning electron microscopy (SEM) to study their morphology. For the microbial evaluation of nanocomposites, the disk diffusion method was used against Streptococcus mutans, Staphylococcus aureus, and Escherichia coli. The results showed that the nanofibers were uniform in shape without any bead (structural defects). The release pattern of curcumin from the nanocomposite was a two-stage release, 60% of which was released in the first two days and the rest being slowly released until the 14th day. The results of the microbial evaluations showed that the nanocomposites had significant antimicrobial effects against all bacteria (p = 0.0086). It seems that these nanocomposites can be used in dental tissue engineering or as other dental materials. Also, according to the appropriate microbial results, these plant antimicrobials can be used instead of chemical antimicrobials, or along with them, to reduce bacterial resistance.
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Affiliation(s)
- Simin Sharifi
- Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz 51368, Iran; (S.S.); (A.Z.K.)
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz 51368, Iran
| | - Asma Zaheri Khosroshahi
- Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz 51368, Iran; (S.S.); (A.Z.K.)
| | - Solmaz Maleki Dizaj
- Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz 51368, Iran; (S.S.); (A.Z.K.)
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz 51368, Iran
| | - Yashar Rezaei
- Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz 51368, Iran; (S.S.); (A.Z.K.)
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz 51368, Iran
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Gholami Z, Hasanpour S, Sadigh S, Johari S, Shahveghar Z, Ataei K, Javari E, Amani M, Javadi Kia L, Delir Akbari Z, Nazari Z, Maleki Dizaj S, Rezaei Y. Antibacterial agent-releasing scaffolds in dental tissue engineering. J Adv Periodontol Implant Dent 2021; 13:43-47. [PMID: 35919917 PMCID: PMC9327489 DOI: 10.34172/japid.2021.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 03/27/2021] [Indexed: 11/22/2022]
Abstract
It seems quite challenging in tissue engineering to synthesize a base material with a range of essential activities, including biocompatibility, nontoxicity, and antimicrobial activities. Various types of materials are synthesized to solve the problem. This study aimed to provide the latest relevant information for practitioners about antibacterial scaffolds in dental tissue engineering. The PubMed search engine was used to review the relevant studies with a combination of the following terms as search queries: tissue engineering, scaffolds, antimicrobial, dentistry, dental stem cells, and oral diseases. It is noteworthy to state that only the terms related to tissue engineering in dentistry were considered. The antimicrobial scaffolds support the local tissue regeneration and prevent adverse inflammatory reactions; however, not all scaffolds have such positive characteristics. To resolve this potential defect, different antimicrobial agents are used during the synthesis process. Innovative methods in guided tissue engineering are actively working towards new ways to control oral and periodontal diseases.
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Affiliation(s)
- Zahra Gholami
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shirin Hasanpour
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samira Sadigh
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sana Johari
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zahra Shahveghar
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kosar Ataei
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Eelahe Javari
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahsa Amani
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Leila Javadi Kia
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zahra Delir Akbari
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zahra Nazari
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Solmaz Maleki Dizaj
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yashar Rezaei
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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6
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Haghighi AHS, Emami M, Fakhri E, Rezaei Y. Effects of Orthodontic Adhesives on Dental Enamel Color Alteration Using Chemically Cured and Light-Cured Composites. Front Dent 2021; 17:1-9. [PMID: 33615289 PMCID: PMC7883653 DOI: 10.18502/fid.v17i13.4176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 07/23/2020] [Indexed: 11/24/2022] Open
Abstract
Objectives: The purpose of this investigation was to evaluate the color alteration of dental enamel following the use of light-cured and chemically cured composites for bonding of metal brackets. Materials and Methods: Sixty extracted human premolars divided into five groups (n=12) were included in this study. Metal brackets were bonded using chemically cured (System 1+ and Unite) and light-cured (Transbond XT and Grengloo) composites. The control group remained untreated. After 72 hours of immersion in a staining solution and 24 hours of photoaging, the brackets were debonded, and adhesive remnants were cleaned using a 12-blade tungsten carbide bur and polished with Sof-Lex discs. The color was assessed at the baseline and after cleaning procedures in accordance with the CIE L*a*b (lightness, red/green, blue/yellow) color system. Statistical analyses were performed using paired sample t-test and one-way analysis of variance (ANOVA). Results: The L*, a*, and b* parameters showed a significant increase in all adhesive groups (P<0.001). The experimental groups showed significant color changes (P<0.05), and the mean ΔE ranged from 2.46 to 3.15 units. No significant difference was found between the ΔE of the adhesive groups (P>0.05). Conclusion: The enamel color change is influenced by bonding and debonding procedures. Chemically cured and light-cured composites have similar effects on dental enamel color alterations.
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Affiliation(s)
- Amir Houman Sadr Haghighi
- Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Emami
- Dental and Periodontal Research Center, Dentistry Faculty, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elaheh Fakhri
- Dental and Periodontal Research Center, Dentistry Faculty, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yashar Rezaei
- Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Sadeghipour P, Noohi F, Hosseini S, Kordrostami S, Shafe O, Moosavi J, Rokni M, Tashakori Beheshti A, Rezaei Y. Rivaroxaban in patients undergoing surgical mitral valve repair. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
The role of the non-vitamin K antagonist oral anticoagulants has here been scarcely studied In patients undergoing mitral valve repair (MVre).
Methods
In the present mixed cohort study, the safety and efficacy of rivaroxaban (prospective analysis) were compared with those of warfarin (retrospective analysis) in patients undergoing MVre.
Results
Study flow chart were presented In Figure. Dissimilarities in baseline characteristics necessitated propensity score matching, in which 104 patients in each group were compared. No major bleeding or cerebrovascular accident occurred during the 1-year follow-up. Clinically relevant non-major bleeding was reported in 2 patients in the rivaroxaban group and 4 patients in the warfarin group, a difference non-statistically significant before and after propensity score matching (P=0.371 and P=0.407, respectively). The type of anticoagulation did not predict the 1-year outcome (HR: 2.165, 95% CI: 0.376 to 12.460; P=0.387).
Conclusion
In this mixed cohort study, rivaroxaban was both safe and efficient in patients with MVre. Such preliminary results should prompt larger randomized controlled trials.
Cohort flow chart
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- P Sadeghipour
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - F Noohi
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - S Hosseini
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - S Kordrostami
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - O Shafe
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - J Moosavi
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - M Rokni
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - A Tashakori Beheshti
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - Y Rezaei
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
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Ghasemi N, Rahimi S, Samiei M, Mohamadi M, Rezaei Y, Divband B, Farhangi N. Effect of the of Zeolite Containing Silver-Zinc Nanoparticles on the Push out Bond Strength of Mineral Trioxide Aggregate in Simulated Furcation Perforation. J Dent (Shiraz) 2019; 20. [PMID: 31214637 PMCID: PMC6538903 DOI: 10.30476/dentjods.2019.44919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
STATEMENT OF THE PROBLEM Recently, zeolite has been regarded to improve the properties of dental materials such as mineral trioxide aggregate (MTA). PURPOSE The aim of the present study was to evaluate the effect of incorporating zeolite/silver/zinc (Ze/Ag/Zn) composite at 2 wt% to MTA powder on the push-out bond strength in simulated furcation perforations. MATERIALS AND METHOD Furcal perforations, measuring 1.3 mm in diameter and 2 mm in height, were simulated in 40 human mandibular first molars. The samples were allocated to two groups (n=20) based on the material used for the repair of perforations. In the group 1, MTA and in the group 2, MTA plus Ze/Ag/Zn (2%) was used. The samples were incubated at 37°C for 1 week. Then the universal testing machine was employed to measure bond strength. The resistance of materials to dislodgment was recorded in MPa. Data were analyzed using t-test. Statistical significance was set at p< 0.05. RESULTS The push-out bond strength in the group 1 (6.40±1.98 MPa) was significantly higher than that in the group 2 (2.1±0.6 MPa) with p= 0.001. CONCLUSION Under the limitations of the present study, it can be concluded that incorporation of Ze/Ag/Zn at 2 wt% to MTA powder had a negative effect on the push-out bond strength.
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Affiliation(s)
- Negin Ghasemi
- Dept. of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Golgasht Street, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Rahimi
- Dept. of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Golgasht Street, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Samiei
- Dept. of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Golgasht Street, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehrnush Mohamadi
- Dept. of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Golgasht Street, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yashar Rezaei
- Dept. of Dental Biomaterials, Dental Faculty, Tabriz University of Medical Sciences, Golgasht Street, Tabriz, Iran
| | | | - Negin Farhangi
- Student of Dentistry, Dental Faculty, Tabriz University of Medical Sciences, Golgasht Street, Tabriz, Iran
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Abed Kahnamouei M, Gholizadeh S, Rikhtegaran S, Daneshpooy M, Kimyai S, Alizadeh Oskoee P, Rezaei Y. Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins. J Dent Res Dent Clin Dent Prospects 2017; 11:222-228. [PMID: 29354248 PMCID: PMC5768954 DOI: 10.15171/joddd.2017.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 08/24/2017] [Indexed: 11/26/2022] Open
Abstract
Background. The aim of this study was to investigate the effect of preheating methacrylate- and silorane-based composite resins on their color stability up to 40 times at 55‒60°C.
Methods. Seventy-six methacrylate and silorane-based composite resin samples, with a diameter of 10 mm and a height of 2 mm, were divided into 4 groups (n=19). After the samples were prepared, their color parameters were determined using a reflective spectrophotometer. The composite resin samples were separately stored in a solution of tea for 40 consecutive days. Then the samples underwent a color determination procedure again using a spectrophotometer and color changes were recorded. Finally two-way ANOVA was used to study the effect of composite temperature on its staining (P<0.05). Independent-samples t-test was used to evaluate changes in conversion rates of preheated composite resin samples compared to non-heated samples at P=0.005 and P=0.029 for silorane-based and Z250 composite resin samples, respectively.
Results. Both composite resin type (P=0.014) and preheating (P<0.001) had significant effects on ΔE.
Conclusion. Repeated preheating of methacrylate- and silorane-based composite resin samples, up to 55‒60°C for 40 rounds, resulted in more color changes compared with unheated composite resin samples. After storage in a solution of tea the color change rate in the composite resin samples of silorane-based was higher than the Z250 composite resin samples.
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Affiliation(s)
- Mehdi Abed Kahnamouei
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Restorative Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sarah Gholizadeh
- Department of Restorative Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Sahand Rikhtegaran
- Department of Restorative Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Daneshpooy
- Department of Restorative Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soodabeh Kimyai
- Department of Restorative Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Yashar Rezaei
- Department of Restorative Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Yavari H, Ghasemi N, Divband B, Rezaei Y, Jabbari G, Payahoo S. The effect of photodynamic therapy and polymer solution containing nano-particles of Ag /ZnO on push-out bond strength of the sealers AH-Plus and MTA Fillapex. J Clin Exp Dent 2017; 9:e1109-e1114. [PMID: 29075413 PMCID: PMC5650213 DOI: 10.4317/jced.54069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 07/19/2017] [Indexed: 11/27/2022] Open
Abstract
Background The aim of this in vitrostudy was to examine and compare the effect of photodynamic therapy and solution containing nano particles Ag/ZnO on adhesion of endodontic sealers to dentinal walls of human root canal. Material and Methods Ninty single-rooted human teeth were selected and their clinical crown was cut from the cemento-enamel junction zone. Canals were prepared by RaCe rotary system and the smear layer was removed using 17% EDTA and 5.25% NaOCl. Samples were randomly divided into two groups of AH Plus and MTA Fillapex based on the sealer type and each group based on antimicrobial method was divided into two sub-groups of photodynamic therapy and polymer containing nano particles of Ag / ZnO and a control sub-group (N = 15). After obturation of canals with gutta-percha and sealers mentioned, the samples were incubated for a week at a humidity of 95% and 37°C and then 2mm thick discs were prepared from the middle region of roots for Push-out test. The maximum failure force was recorded in newton and converted to MPa. Then, 3 random specimens of each subgroup were evaluated by scanning electron microscopy. Statistical analysis was performed by Two way ANOVA and (P<0.05) was considered significant. Results The highest (4.84 ± 1.63) and lowest (0.16 ± 0.075) push-out bond strength values were obtained in (AH Plus-PDT) and (MTA Fillapex-Ag/ZnO) respectively. Independent of antimicrobial method, AH Plus bond strength was significantly higher than the MTA Fillapex (p<0.001). For both sealers, PDT increased the bond strength significantly (p<0.001). Conclusions Photodynamic therapy has a positive effect on the bond strength of AH Plus and MTA Fillapex sealers. Key words:AH Plus, MTA Fillapex, Nano particles, Photodynamic therapy, Push-out.
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Affiliation(s)
- Hamidreza Yavari
- DDS, MSc, Associate Professor, Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Negin Ghasemi
- DDS, MSc, Assistant Professor, Department of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Baharak Divband
- Assistant Professor, Department of Chemistry, Tabriz University, Tabriz, Iran
| | - Yashar Rezaei
- Assistant Professor, Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Golchin Jabbari
- DDS, Endodontic Department, Dental and Periodontal Research Center, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Salar Payahoo
- DDS, Department of Oral and maxillofacial radiology, Dental and Periodontal Research Center, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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11
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Shahabi S, Fekrazad R, Johari M, Chiniforoush N, Rezaei Y. FT-Raman spectroscopic characterization of enamel surfaces irradiated with Nd:YAG and Er:YAG lasers. J Dent Res Dent Clin Dent Prospects 2016; 10:207-212. [PMID: 28096945 PMCID: PMC5237666 DOI: 10.15171/joddd.2016.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 09/18/2016] [Indexed: 12/01/2022] Open
Abstract
Background. Despite recent advances in dental caries prevention, caries is common and remains a serious health problem. Laser irradiation is one of the most common methods in preventive measures in recent years. Raman spectroscopy technique is utilized to study the microcrystalline structure of dental enamel. In this study, FT-Raman spectroscopy was used to evaluate chemical changes in enamel structure irradiated with Nd:YAG and Er:YAG lasers.
Methods. We used 15 freshly-extracted, non-carious, human molars that were treated as follows: No treatment was carried out in group A (control group); Group B was irradiated with Er:YAG laser for 10 seconds under air and water spray; and Group C was irradiated with Nd:YAG laser for 10 seconds under air and water spray. After treatment, the samples were analyzed by FT-Raman spectroscopy.
Results. The carbonate content evaluation with regard to the integrated area under the curve (1065/960 cm–1) exhibited a significant reduction in its ratio in groups B and C. The organic content (2935/960 cm-1) area exhibited a significant decrease after laser irradiation in group B and C.
Conclusion. The results showed that the mineral and organic matrices of enamel structure were affected by laser irradiation; therefore, it might be a suitable method for caries prevention.
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Affiliation(s)
- Sima Shahabi
- Laser Research Center of Dentistry (LRCD), Tehran University of Medical Sciences, Tehran, Iran; Departmet of Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Fekrazad
- Laser Research Center of Dentistry (LRCD), Tehran University of Medical Sciences, Tehran, Iran; Laser Research Center in Medical Sciences (LRCMS), AJA University of Medical Sciences, Tehran, Iran
| | - Maryam Johari
- Laser Research Center of Dentistry (LRCD), Tehran University of Medical Sciences, Tehran, Iran
| | - Nasim Chiniforoush
- Laser Research Center of Dentistry (LRCD), Tehran University of Medical Sciences, Tehran, Iran
| | - Yashar Rezaei
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Jafarzadeh TS, Erfan M, Behroozibakhsh M, Fatemi M, Masaeli R, Rezaei Y, Bagheri H, Erfan Y. Evaluation of Polymerization Efficacy in Composite Resins via FT-IR Spectroscopy and Vickers Microhardness Test. J Dent Res Dent Clin Dent Prospects 2015; 9:226-32. [PMID: 26889359 PMCID: PMC4753031 DOI: 10.15171/joddd.2015.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 07/26/2015] [Indexed: 12/04/2022] Open
Abstract
Background and aims. Polymerization efficacy affects the properties and performance of composite resin restorations.The purpose of this study was to evaluate the effectiveness of polymerization of two micro-hybrid, two nano-hybrid and one nano-filled ormocer-based composite resins, cured by two different light-curing systems, using Fourier transformation infrared (FT-IR) spectroscopy and Vickers microhardness testing at two different depths (top surface, 2 mm). Materials and methods. For FT-IR spectrometry, five cylindrical specimens (5mm in diameter × 2 mm in length) were prepared from each composite resin using Teflon molds and polymerized for 20 seconds. Then, 70-μm wafers were sectioned at the top surface and at2mm from the top surface. The degree of conversion for each sample was calculated using FT-IR spectroscopy. For Vickers micro-hardness testing, three cylindrical specimens were prepared from each composite resin and polymerized for 20 seconds. The Vickers microhardness test (Shimadzu, Type M, Japan) was performed at the top and bottom (depth=2 mm) surfaces of each specimen. Three-way ANOVA with independent variables and Tukey tests were performed at 95% significance level. Results. No significant differences were detected in degree of conversion and microhardness between LED and QTH light-curing units except for the ormocer-based specimen, CeramX, which exhibited significantly higher DC by LED. All the composite resins showed a significantly higher degree of conversion at the surface. Microhardness was not significantly affected by depth, except for Herculite XRV Ultra and CeramX, which showed higher values at the surface. Conclusion. Composite resins containing nano-particles generally exhibited more variations in degree of conversion and microhardness.
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Affiliation(s)
- Tahereh-Sadat Jafarzadeh
- Associate Professor, Department of Dental Biomaterials, Tehran University of Medical Sciences, Iranian Tissue Bank and Research Center, Tehran University of Medical Sciences Tehran, Iran
| | - Mohammad Erfan
- Associate Professor, Department of Pharmaceutics, School of Pharmacy, Shahid Bahashti University of Medical Sciences, Tehran, Iran
| | - Marjan Behroozibakhsh
- Assistant Professor, Research Center for Science and Technology in Medicine and Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Mostafa Fatemi
- Assistant Professor, Research Center for Science and Technology in Medicine and Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Masaeli
- Ph.D Candidate, Research Center for Science and Technology in Medicine and Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Yashar Rezaei
- Assistant Professor, Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Bagheri
- Assistant Professor, Dental Materials Research Center, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Yasaman Erfan
- Dental Student, The International Branch of Shahid Behesti University of Medical Sciences and Health Services, Tehran, Iran
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Rezaei Y, Moztarzadeh F, Shahabi S, Tahriri M. Synthesis, Characterization, and In Vitro Bioactivity of Sol-Gel-Derived SiO2–CaO–P2O5–MgO-SrO Bioactive Glass. ACTA ACUST UNITED AC 2013. [DOI: 10.1080/15533174.2013.783869] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yashar Rezaei
- a Dental Materials Department, School of Dentistry , Tehran University of Medical Sciences , Tehran , Iran
- b Dental Research Center , Tehran University of Medical Sciences , Tehran , Iran
| | - Fathollah Moztarzadeh
- c Biomaterials Group, Faculty of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran
| | - Sima Shahabi
- a Dental Materials Department, School of Dentistry , Tehran University of Medical Sciences , Tehran , Iran
- d Laser Research Center in Dentistry , Tehran University of Medical Sciences , Tehran , Iran
| | - Mohammadreza Tahriri
- c Biomaterials Group, Faculty of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran
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Jafarzadeh Kashi TS, Kasra Kermanshahi R, Erfan M, Vahid Dastjerdi E, Rezaei Y, Tabatabaei FS. Evaluating the In-vitro Antibacterial Effect of Iranian Propolis on Oral Microorganisms. Iran J Pharm Res 2011; 10:363-8. [PMID: 24250366 PMCID: PMC3828924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Propolis has traditionally been used in curing infections and healing wounds and burns. Current researches have shown that propolis has antibacterial, antifungal and antiviral actions however, the pharmacological activity of propolis is highly variable depending on its geographic origin. There have been few studies on the effects of Iranian propolis on the oral microorganisms. In this in-vitro study, the antimicrobial activity of the ethanolic and water extracts of the Iranian propolis (10%, w/v) from north-east area of Tehran was evaluated. Susceptibility of the oral strains tested (Streptococcus mutans ATCC 35668; Streptococcus salivarius ATCC 9222; Staphylococcus aureus ATCC 25923; Enterococcus faecalis ATCC 9854 and Lactobacillus casei ATCC 39392) was evaluated using the agar diffusion method at a concentration of 20 mg/mL of propolis and the zones of growth inhibition were measured. Antibacterial activity was determined by using minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) at different concentrations of propolis. The ethanolic extract showed bacteriostatic and bactericidal activity against all the strains, with MIC and MBC ranges of 250-500 µg/mL. The MIC concentration of the water extract was 500 µg/mL against S. mutans and E. faecalis. The water extract showed bactericidal activity only against S. mutans (20 mg/mL). These results indicate that the ethanolic extract is probably more useful in the control of oral biofilms and subsequent dental caries development. However, to determine the consequence of the ethanolic extract of Iranian propolis on the oral mucosa, in-vivo studies of its possible effects are needed.
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Affiliation(s)
- Tahereh Sadat Jafarzadeh Kashi
- Department of Dental Materials,Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. ,Research Center for Medical and Technology in Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mohammad Erfan
- Department of Pharmaceutics, Pharmacy School, ShahidBeheshtiUniversityofMedicalSciences, Tehran, Iran
| | - Elahe Vahid Dastjerdi
- Department of Orthodontics,Dental School, ShahidBeheshti University of Medical Sciences, Tehran, Iran.
| | - Yashar Rezaei
- Department of Dental Materials,Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
| | - Fahimeh Sadat Tabatabaei
- Department of Dental Materials,Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Corresponding author: E-mail:
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