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Piyush G, Kalyan SS, Aparna UP, Khyati G, Basawaraj B. Effects of novel additives on the mechanical and Biological properties of glass ionomer cement: An in vitro study. JOURNAL OF CONSERVATIVE DENTISTRY AND ENDODONTICS 2024; 27:503-507. [PMID: 38939535 PMCID: PMC11205172 DOI: 10.4103/jcde.jcde_81_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/20/2024] [Accepted: 03/27/2024] [Indexed: 06/29/2024]
Abstract
Aim To evaluate the efficacy of incorporated novel additives in Glass Ionomer Cement to ameliorate biocompatibility and mechanical properties. Introduction Though Glass Ionomer Cement (GIC) has multiple advantages, it is not strong enough for medical applications, and its biocompatibility is questionable. To improve biocompatibility and its mechanical properties, a study was performed to investigate the potential benefits of adding graphene, carbon nanotubes, hydroxyapatite, and bioactive glass to GIC. The objective was to enhance both the mechanical properties and biocompatibility of GIC. Material and Method Modified Glass Ionomer Cement was prepared by creating five groups. Hydroxyapatite, multi-walled carbon nanotubes, graphene, and bioactive glass were incorporated in a 10:1 weight ratio, respectively. Group 5 was designated as the control group and used Fuji Type II GIC. After preparing 90 samples, they were kept in deionized water for a day and then evaluated their compressive strength, microhardness, and diametral tensile strength, and also checked their in vitro cytotoxicity by direct contact with L929 mammalian fibroblast cells. Statistical Analysis The data were examined using mean and standard deviation descriptive statistics. The comparative evaluation was done via Tukey HSD test and one-way ANOVA using S.P.S.S. software. Result It showed that Group 3 had better results in compressive strength (144.478+- 3.989), diametral tensile strength (20.29+- 0.8601), and microhardness (131+-3.536) when compared with other groups while in the biocompatibility (viability %) Group 1 [82.55], Group 3 [76.49], Group 4 [87.63], while Group 2[58.02]. Conclusion Group 3 has better physical properties in microhardness, diametral tensile strength, and compressive strength, than the other groups. In Biocompatibility, Group 1, Group 3, Group 4, and Group 5 were noncytotoxic at the same time multi-walled carbon nanotubes group (Group 2) had cytotoxic potential.
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Affiliation(s)
- Gupta Piyush
- Department of Conservative Dentistry and Endodontics, BhaBha Dental College, Bhopal, Madhya Pradesh, India
| | - S. Sai Kalyan
- Director, Prevest Research Institute, Prevest Denpro Limited, Jammu, India
| | - U. Palekar Aparna
- Department of Conservative Dentistry and Endodontics, Rural Dental College, PIMS loni, Wardha, Maharashtra, India
| | - Gupta Khyati
- Department of Orthodontics and Dentofacial Orthopedics, Sharad Pawar Dental College, DMIHER, Wardha, Maharashtra, India
| | - Biradar Basawaraj
- Department of Conservative Dentistry and Endodontics, Rural Dental College, PIMS loni, Wardha, Maharashtra, India
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López-García S, Sanz JL, Oñate-Sánchez RE, Forner L, García-Bernal D, Murcia L, Rodríguez-Lozano FJ, Llena C. In vitro biocompatibility of ammonia-free silver fluoride products on human dental pulp stem cells. Tissue Cell 2024; 86:102283. [PMID: 38113650 DOI: 10.1016/j.tice.2023.102283] [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: 10/01/2023] [Revised: 11/25/2023] [Accepted: 11/28/2023] [Indexed: 12/21/2023]
Abstract
OBJECTIVES Silver fluoride (SF) is a preventive and therapeutic option for dental pathological processes involving structural alterations of the hard tissues, either during their formation or those caused by caries or other pathological reasons. This study aimed to compare the biological properties of two commercial SF products, one of them with ammonium (Riva Star; SDF) and the other ammonium-free (Riva Star Aqua; AgF), both with or without potassium iodide (KI), by the assessment of the cytotoxicity of the materials' eluates. METHODS Human dental pulp stem cells (hDPSCs) were obtained from healthy 18-23-year-old donors. Three dilutions were prepared for the tested materials (0.005%, 0.0005%, and 0.0001%). The following groups were assessed: (AgF, AgF+KI, SDF, SDF+KI, KI, negative control). A series of cytocompatibility assays were performed: MTT assay, IC50 assay, wound healing (migration) assay, cell cytoskeleton staining, analysis of cell apoptosis and necrosis, and reactive oxygen species production. The normality in the distribution of the data was previously confirmed via a Q-Q plot. Statistical significance was tested using one way ANOVA and Tukey's post hoc test. RESULTS The incorporation of KI improved the cytocompatibility of both SF products in terms of viability, migration, morphology, apoptosis, and reactive oxygen species production. This difference was higher in the AgF group. The lowest dilutions of SF+KI and AgF+KI showed a similar cytocompatibility to that of the control group (MTT assay (p > 0.05 after 24, 48, and 72 h of culture); migration assay (p > 0.05 after 24, 48, and 72 h of culture); reactive oxygen species production (p > 0.05 after 72 h of culture). SIGNIFICANCE Riva Star Aqua shows lower cytotoxicity than Riva Star on hDPSCs. It can be considered as a good alternative in the conservative treatment of dental caries and in the preservation and remineralisation of viable dentine tissue.
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Affiliation(s)
| | - José Luis Sanz
- Department of Stomatology, Universitat de València, 46010 Valencia, Spain
| | - Ricardo E Oñate-Sánchez
- Department of Dermatology, Stomatology, Radiology and Physical Medicine, Morales Meseguer Hospital, Faculty of Medicine, IMIB-Arrixaca, University of Murcia, 30008 Murcia, Spain.
| | - Leopoldo Forner
- Department of Stomatology, Universitat de València, 46010 Valencia, Spain
| | - David García-Bernal
- Department of Dermatology, Stomatology, Radiology and Physical Medicine, Morales Meseguer Hospital, Faculty of Medicine, IMIB-Arrixaca, University of Murcia, 30008 Murcia, Spain
| | - Laura Murcia
- Department of Health Sciences, Catholic University San Antonio of Murcia, 30107 Murcia, Spain
| | - Francisco J Rodríguez-Lozano
- Department of Dermatology, Stomatology, Radiology and Physical Medicine, Morales Meseguer Hospital, Faculty of Medicine, IMIB-Arrixaca, University of Murcia, 30008 Murcia, Spain
| | - Carmen Llena
- Department of Stomatology, Universitat de València, 46010 Valencia, Spain
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Gunay A, Celenk S, Adiguzel O, Cangul S, Ozcan N, Cakmakoglu EE. Comparison of Antibacterial Activity, Cytotoxicity, and Fluoride Release of Glass Ionomer Restorative Dental Cements in Dentistry. Med Sci Monit 2023; 29:e939065. [PMID: 36683310 PMCID: PMC9878919 DOI: 10.12659/msm.939065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND This study aimed to compare the antibacterial activity, cytotoxicity, and fluoride release of 4 different glass ionomer cements (GIC). MATERIAL AND METHODS A total of 200 samples were prepared: Riva Silver, a silver-reinforced GIC; Equia Forte HT, a glass hybrid GIC; ChemFil Rock, a zinc-added GIC; and Ketac™ Molar Easymix. Using the agar diffusion test for antibacterial activity, 30 samples from each group were analyzed for Streptococcus mutans, Lactobacillus acidophilus, and Actinomyces naeslundii. The areas around the samples where no bacterial growth occurred were digitally measured and recorded. For cytotoxicity analysis, the WST-1 test was performed on 10 samples from each group using the L929 mouse fibroblast cell line. The fluoride release property was evaluated using an ion-selective electrode method on 10 samples from each group. RESULTS The group that used Ketac™ Molar Easymix showed the lowest antibacterial activity against S. mutans, L. acidophilus, and A. naeslundii. In all 3 days of cytotoxicity testing, the group that used Riva Silver was found to be the least toxic material, while the group that used ChemFil Rock did not have viable cells after the 1st day. In all 4 materials, fluoride release values gradually increased since the first day, with Ketac™ Molar Easymix having the highest fluoride release. CONCLUSIONS Of all the GICs tested, Ketac™ Molar Easymix demonstrated the least antibacterial activity despite having the highest fluoride release, while Riva Silver was found to be the least cytotoxic material.
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Affiliation(s)
- Ayse Gunay
- Department of Pediatric Dentistry, Dicle University, Faculty of Dentistry, Diyarbakir, Turkey
| | - Sema Celenk
- Department of Pediatric Dentistry, Dicle University, Faculty of Dentistry, Diyarbakir, Turkey
| | - Ozkan Adiguzel
- Department of Endodontics, Dicle University, Faculty of Dentistry, Diyarbakır, Turkey
| | - Suzan Cangul
- Department of Restorative Dentistry, Dicle University, Faculty of Dentistry, Diyarbakır, Turkey
| | - Nida Ozcan
- Department of Microbiology, Dicle University, Faculty of Medicine, Diyarbakır, Turkey
| | - Ezgi Eroglu Cakmakoglu
- Department of Pediatric Dentistry, Bingol University, Faculty of Dentistry, Bingol, Turkey
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López-García S, Pecci-Lloret MP, Pecci-Lloret MR, Guerrero-Gironés J, Rodríguez-Lozano FJ, García-Bernal D. Topical fluoride varnishes promote several biological responses on human gingival cells. Ann Anat 2021; 237:151723. [PMID: 33857632 DOI: 10.1016/j.aanat.2021.151723] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/14/2021] [Accepted: 03/14/2021] [Indexed: 01/16/2023]
Abstract
OBJECTIVE To compare the in vitro cytotoxicity of four commercial topical fluoride varnishes widely used in daily dental practice for the prevention of caries on human fibroblasts: Cervitec F, Fixofluor, Fluor Protector S and Duraphat. MATERIAL AND METHODS Human gingival fibroblasts (hGF) were exposed to different concentrations of fluoride varnishes extracts. Biological assays, including MTT and IC50 value determination, annexin-V/7-AAD staining, cell migration and F-actin staining with phalloidin were carried out. Statistical analyses were performed using one-way ANOVA and Tukey's post hoc test. RESULTS At 4% concentration, all of the fluoride varnishes extracts affected fibroblasts metabolic activity, exhibiting a high degree of cytotoxicity at all measured time points. At 0.1% and 1%, Duraphat and Fixofluor or Fluor Protector S and Cervitec F exerted the lowest or highest cytotoxic effects, respectively. Similar effects were evidenced when induction of apoptosis/necrosis and cell migration assays were analyzed. Immunocytochemical assays revealed a similar number of fibroblasts, without changes in the morphology and F-actin content at 0.1% concentration of all tested materials, while at 1% concentration, Fluor Protector S and Cervitec F showed few cells with aberrant morphology or non-adhered cells, respectively. CONCLUSIONS Different commercial topical fluoride varnishes with the same therapeutic indication may exhibit different biological effects and cytotoxicity on fibroblasts.
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Affiliation(s)
- Sergio López-García
- Cellular Therapy and Hematopoietic Transplant Research Group, Biomedical Research Institute of Murcia, Clinical University Hospital Virgen de la Arrixaca, University of Murcia, 30120 Murcia, Spain
| | - María P Pecci-Lloret
- Gerodontology and Special Care Dentistry Unit, Hospital Morales Meseguer, Medicine School, University of Murcia, 30100 Murcia, Spain
| | - Miguel R Pecci-Lloret
- Gerodontology and Special Care Dentistry Unit, Hospital Morales Meseguer, Medicine School, University of Murcia, 30100 Murcia, Spain
| | - Julia Guerrero-Gironés
- Gerodontology and Special Care Dentistry Unit, Hospital Morales Meseguer, Medicine School, University of Murcia, 30100 Murcia, Spain.
| | - Francisco J Rodríguez-Lozano
- Cellular Therapy and Hematopoietic Transplant Research Group, Biomedical Research Institute of Murcia, Clinical University Hospital Virgen de la Arrixaca, University of Murcia, 30120 Murcia, Spain; Gerodontology and Special Care Dentistry Unit, Hospital Morales Meseguer, Medicine School, University of Murcia, 30100 Murcia, Spain
| | - David García-Bernal
- Cellular Therapy and Hematopoietic Transplant Research Group, Biomedical Research Institute of Murcia, Clinical University Hospital Virgen de la Arrixaca, University of Murcia, 30120 Murcia, Spain; Internal Medicine Department, Medicine School, University of Murcia, 30100 Murcia, Spain
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Siew Ching H, Thirumulu Ponnuraj K, Luddin N, Ab Rahman I, Nik Abdul Ghani NR. Early Odontogenic Differentiation of Dental Pulp Stem Cells Treated with Nanohydroxyapatite-Silica-Glass Ionomer Cement. Polymers (Basel) 2020; 12:polym12092125. [PMID: 32957636 PMCID: PMC7569887 DOI: 10.3390/polym12092125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/06/2020] [Accepted: 09/14/2020] [Indexed: 01/09/2023] Open
Abstract
This study aimed to investigate the effects of nanohydroxyapatite–silica–glass ionomer cement (nanoHA–silica–GIC) on the differentiation of dental pulp stem cells (DPSCs) into odontogenic lineage. DPSCs were cultured in complete Minimum Essential Medium Eagle—Alpha Modification (α-MEM) with or without nanoHA–silica–GIC extract and conventional glass ionomer cement (cGIC) extract. Odontogenic differentiation of DPSCs was evaluated by real-time reverse transcription polymerase chain reaction (rRT–PCR) for odontogenic markers: dentin sialophosphoprotein (DSPP), dentin matrix protein 1 (DMP1), osteocalcin (OCN), osteopontin (OPN), alkaline phosphatase (ALP), collagen type I (COL1A1), and runt-related transcription factor 2 (RUNX2) on day 1, 7, 10, 14, and 21, which were normalized to the house keeping gene glyceraldehyde-3-phosphate dehydrogenase (GAPDH). Untreated DPSCs were used as a control throughout the study. The expressions of DSPP and DMP1 were higher on days 7 and 10, that of OCN on day 10, those of OPN and ALP on day 14, and that of RUNX2 on day 1; COL1A1 exhibited a time-dependent increase from day 7 to day 14. Despite the above time-dependent variations, the expressions were comparable at a concentration of 6.25 mg/mL between the nanoHA–silica–GIC and cGIC groups. This offers empirical support that nanoHA–silica–GIC plays a role in the odontogenic differentiation of DPSCs.
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Affiliation(s)
- Hii Siew Ching
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia; (H.S.C.); (N.L.); (I.A.R.); (N.R.N.A.G.)
| | - Kannan Thirumulu Ponnuraj
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia; (H.S.C.); (N.L.); (I.A.R.); (N.R.N.A.G.)
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
- Correspondence: ; Tel.: +60-97675847
| | - Norhayati Luddin
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia; (H.S.C.); (N.L.); (I.A.R.); (N.R.N.A.G.)
| | - Ismail Ab Rahman
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia; (H.S.C.); (N.L.); (I.A.R.); (N.R.N.A.G.)
| | - Nik Rozainah Nik Abdul Ghani
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia; (H.S.C.); (N.L.); (I.A.R.); (N.R.N.A.G.)
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Evaluation of the cytotoxicity of contemporary glass-ionomer cements on mouse fibroblasts and human dental pulp cells. Eur Arch Paediatr Dent 2019; 21:321-328. [DOI: 10.1007/s40368-019-00481-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 09/17/2019] [Indexed: 10/25/2022]
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Hii SC, Luddin N, Kannan TP, Ab Rahman I, Nik Abdul Ghani NR. The Biological Evaluation of Conventional and Nano-Hydroxyapatite-Silica Glass Ionomer Cement on Dental Pulp Stem Cells: A Comparative Study. Contemp Clin Dent 2019; 10:324-332. [PMID: 32308298 PMCID: PMC7145261 DOI: 10.4103/ccd.ccd_581_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Despite their lower strength, glass ionomer cements (GICs) are widely used as restorative materials because of their anti-cariogenic properties, direct adhesion to tooth structure and good biocompatibility. Recently, the addition of nano-hydroxyapatite (nano-HA)-silica to conventional GIC (cGIC) has been shown to improve the strength of cGIC. However, the biocompatibility and cell attachment properties of this material are unknown. AIMS This study aims to evaluate and compare the cytotoxicity and cell attachment properties of cGIC and nano-HA-silica-GIC on dental pulp stem cells (DPSCs). METHODS AND MATERIALS Material extracts of nano-HA-silica-GIC and cGIC were prepared into seven serial dilutions and applied to 96 well plates seeded with DPSCs. After 72 h, the cell viability was determined using MTT assay. The DPSCs cell attachment properties were examined under scanning electron microscope (SEM) after 24 and 72 h. Kruskal-Wallis test was used to analyse the data for MTT assay (P < 0.05). SEM images of cell attachment properties were also described. RESULTS Nano-HA-silica-GIC and cGIC was shown to be slight to non-cytotoxic at all concentrations, except 200 mg/ml. Moderate cytotoxicity has been observed at 200 mg/ml concentration where nano-HA-silica-GIC and cGIC revealed cell viability values of 44.38 and 42.15%, respectively. Nano-HA-silica-GIC demonstrated better cell viability values than cGIC at all concentrations except for 6.25 and 12.5 mg/ml. Nevertheless, the results were not statistically significant (P > 0.05). SEM examination revealed the increasing numbers of DPSCs attached to both groups with prominent filopodia, especially after 72 h. CONCLUSIONS Nano-HA-silica-GIC exhibited good biocompatibility which is comparable to cGIC and favoured the attachment of DPSCs.
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Affiliation(s)
- Siew Ching Hii
- School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, 16150, Kota Bharu, Kelantan, Malaysia
| | - Norhayati Luddin
- School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, 16150, Kota Bharu, Kelantan, Malaysia
| | - Thirumulu Ponnuraj Kannan
- School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, 16150, Kota Bharu, Kelantan, Malaysia
- Human Genome Centre, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, 16150, Kota Bharu, Kelantan, Malaysia
| | - Ismail Ab Rahman
- School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, 16150, Kota Bharu, Kelantan, Malaysia
| | - Nik Rozainah Nik Abdul Ghani
- School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, 16150, Kota Bharu, Kelantan, Malaysia
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Ahmed HMA, Luddin N, Kannan TP, Mokhtar KI, Ahmad A. White mineral trioxide aggregate mixed with calcium chloride dihydrate: chemical analysis and biological properties. Restor Dent Endod 2017; 42:176-187. [PMID: 28808634 PMCID: PMC5553017 DOI: 10.5395/rde.2017.42.3.176] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 03/07/2017] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES This study aimed to evaluate the chemical and biological properties of fast-set white mineral trioxide aggregate (FS WMTA), which was WMTA combined with calcium chloride dihydrate (CaCl2·2H2O), compared to that of WMTA. MATERIALS AND METHODS Surface morphology, elemental, and phase analysis were examined using scanning electron microscope (SEM), energy dispersive X-ray microanalysis (EDX), and X-ray diffraction (XRD), respectively. The cytotoxicity and cell attachment properties were evaluated on human periodontal ligament fibroblasts (HPLFs) using methyl-thiazol-diphenyltetrazolium (MTT) assay and under SEM after 24 and 72 hours, respectively. RESULTS Results showed that the addition of CaCl2·2H2O to WMTA affected the surface morphology and chemical composition. Although FS WMTA exhibited a non-cytotoxic profile, the cell viability values of this combination were lesser than WMTA, and the difference was significant in 7 out of 10 concentrations at the 2 time intervals (p < 0.05). HPLFs adhered over the surface of WMTA and at the interface, after 24 hours of incubation. After 72 hours, there were increased numbers of HPLFs with prominent cytoplasmic processes. Similar findings were observed with FS WMTA, but the cells were not as confluent as with WMTA. CONCLUSIONS The addition of CaCl2·2H2O to WMTA affected its chemical properties. The favorable biological profile of FS WMTA towards HPLFs may have a potential impact on its clinical application for repair of perforation defects.
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Affiliation(s)
| | - Norhayati Luddin
- Universiti Sains Malaysia School of Dental Sciences, Kubang Kerian, Malaysia
| | - Thirumulu Ponnuraj Kannan
- Universiti Sains Malaysia School of Dental Sciences, Kubang Kerian, Malaysia.,Human Genome Centre, Universiti Sains Malaysia School of Medical Sciences, Kubang Kerian, Malaysia
| | - Khairani Idah Mokhtar
- Universiti Sains Malaysia School of Dental Sciences, Kubang Kerian, Malaysia.,International Islamic University Malaysia, Kulliyyah of Dentistry, Kuantan, Malaysia
| | - Azlina Ahmad
- Universiti Sains Malaysia School of Dental Sciences, Kubang Kerian, Malaysia.,Human Genome Centre, Universiti Sains Malaysia School of Medical Sciences, Kubang Kerian, Malaysia
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Noorani TY, Luddin N, Rahman IA, Masudi SM. In Vitro Cytotoxicity Evaluation of Novel Nano-Hydroxyapatite-Silica Incorporated Glass Ionomer Cement. J Clin Diagn Res 2017; 11:ZC105-ZC109. [PMID: 28571275 DOI: 10.7860/jcdr/2017/24753.9739] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 01/10/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Glass Ionomer Cements (GIC) are among the most popular restorative materials, but their use in dentistry is limited due to their physical properties. The hardness of GIC was improved by incorporation of nano-hydroxyapatite-silica into GIC, to expand its applicability. AIM To evaluate the cytotoxic effects of nano-hydroxyapatite-silica incorporated glass ionomer cement (HA-SiO2-GIC) on human Dental Pulp Stem Cells (DPSC) and compare it with conventional GIC and resin modified GIC. MATERIALS AND METHODS Material extracts of Fuji IX, Fuji II LC and HA-SiO2-GIC were prepared into seven serial concentrations and applied to 96-well-plates seeded with DPSC. The 96-well-plates were incubated for 24 and 72 hours. The morphology of DPSC was observed under the inverted phase contrast microscope, and the cell viability was determined using MTT assay at both time intervals. Kruskal-Wallis test was performed for statistical analysis. RESULTS At maximum concentration, DPSC appeared fewer in number, but the normal spindle morphology was maintained in all groups except for Fuji II LC. At lower concentrations, DPSC appeared normal and more confluent in all groups. The cytotoxic effects of all groups were dose dependent. Fuji IX demonstrated the lowest cytotoxicity, followed by HA-SiO2-GIC. Fuji II LC demonstrated the highest cytotoxicity. The difference was significant between all groups at 200 mg/ml concentration (p<0.05). At concentration <100 mg/ml, cytotoxicity of HA-SiO2-GIC was comparable to that of Fuji IX and lower than that of Fuji II LC. CONCLUSION HA-SiO2-GIC showed a favourable cytotoxicity response and thus holds promise as a future potential restorative material in clinical dentistry.
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Affiliation(s)
- Tahir Yusuf Noorani
- Senior Lecturer, Department of Conservative Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Norhayati Luddin
- Associate Professor, Department of Prosthodontics, School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Ismail Ab Rahman
- Professor, Department of Biomaterials, School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Saman Malik Masudi
- Professor, Department of Conservative Dentistry, Faculty of Dentistry, Lincoln University College, Petaling jaya, Selangor, Malaysia
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Ahmed HMA, Luddin N, Kannan TP, Mokhtar KI, Ahmad A. Chemical analysis and biological properties of two different formulations of white portland cements. SCANNING 2016; 38:303-316. [PMID: 26382064 DOI: 10.1002/sca.21270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 08/28/2015] [Accepted: 09/01/2015] [Indexed: 06/05/2023]
Abstract
White Portland cement (WPC) has generated research interests in the field of endodontics. This study compared between the properties of two formulations of white Portland cement (WPC) of different origin (Malaysia [MA] and Egypt [EG]). WPCs with and without calcium chloride dihydrate were prepared. Scanning electron microscope (SEM), energy dispersive X-ray micro-analysis, and X-ray diffraction were used for surface morphology evaluation, elemental, and phase analysis, respectively. After the preparation of optimized serial dilutions, the cytotoxicity was evaluated on human periodontal ligament fibroblasts (HPLFs) and dental pulp stem cells (DPSCs) using methyl-thiazol-diphenyltetrazolium assay after 24 and 72 h. Cell attachment properties were examined under SEM after 24 and 72 h. Results showed that the surface morphology and chemical composition of both formulations demonstrated detectable variations. The cytotoxicity evaluation showed different cellular responses of HPLFs compared to DSPCs. Both formulations favored the viability of HPLFs. However, the fast set formulations demonstrated severe cytotoxicity on DPSCs. Significant differences between EGWPC and MAWPC were identified (p < 0.05). The cell attachment properties were favorable; however, HPLFs attached and spread over the samples better than DPSCs. In conclusion, WPC of different origin may show differences in chemical and biological properties. The addition of CaCl2 ·2H2 O to WPC can affect its properties. Human cell types may react differently towards different formulations of WPCs. SCANNING 38:303-316, 2016. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
| | - Norhayati Luddin
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Thirumulu Ponnuraj Kannan
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Khairani Idah Mokhtar
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
- Kulliyyah of Dentistry, International Islamic University Malaysia, Bandar Indera Mahkota, Pahang, Kuantan, Malaysia
| | - Azlina Ahmad
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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Nakagawa K, Saita M, Ikeda T, Hirota M, Park W, Lee MCI, Ogawa T. Biocompatibility of 4-META/MMA-TBB resin used as a dental luting agent. J Prosthet Dent 2015; 114:114-21. [PMID: 25882972 DOI: 10.1016/j.prosdent.2014.10.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 10/08/2014] [Accepted: 10/09/2014] [Indexed: 12/15/2022]
Abstract
STATEMENT OF PROBLEM The bonding and biological properties of currently used luting/cementing materials need to be improved. 4-Acryloyloxyethyl trimellitate anhydride/methyl methacrylate-tri-n-butylborane (4-META/MMA-TBB) resin is primarily used for splinting mobile teeth or treating fractured teeth. It undergoes moisture-resistant polymerization and bonds strongly to dentin and metals. PURPOSE The purpose of this in vitro study was to compare the biological and biochemical properties META/MMA-TBB resin with those of conventional polymethyl methacrylate (PMMA)-MMA resin and other currently used luting materials in order to determine whether it may be a viable dental luting agent. MATERIAL AND METHODS The degree of polymerization of 4-META/MMA-TBB resin, PMMA-MMA autopolymerizing resin, 10-methacryloyloxydecyl dihydrogen phosphate-dimethacrylate (MDP-DMA) adhesive resin, and a glass ionomer cement was measured by Fourier-transformed infrared spectroscopy. Free radical production during setting was evaluated by electron spin resonance (ESR) spectroscopy. Rat dental pulp cells cultured on these materials were examined for cell viability, attachment, proliferation, and functional phenotype. RESULTS The degree of polymerization of 4-META/MMA-TBB resin was 82% thirty minutes after preparation, compared to 66% for PMMA-MMA autopolymerizing resin. ESR spectroscopy revealed free radical production from 4-META/MMA-TBB resin and glass ionomer cement was equivalent 24 hours after preparation, with no spike in radical generation observed. In contrast, free radical production from PMMA-MMA and MDP-DMA adhesive resins was rapid and sustained and 10 to 20 times greater than that from 4-META/MMA-TBB. The percentage of viable dental pulp cells 24 hours after seeding was considerably higher on MDP-DMA and 4-META/MMA-TBB resin than on glass ionomer cement. Cell number, proliferation, and alkaline phosphatase activity were highest on 4-META/MMA-TBB resin and lowest on the glass ionomer cement. CONCLUSIONS 4-META/MMA-TBB resin is at least as biocompatible, and perhaps even more biocompatible, than other current luting materials, with fast, favorable, and nontoxic polymerization properties. Further in vivo and human studies of 4-META/MMA-TBB resin as a dental luting agent are warranted.
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Affiliation(s)
- Kaori Nakagawa
- Visiting scholar, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, Calif
| | - Makiko Saita
- Research associate, Department of Clinical Care Medicine, Kanagawa Dental College, Yokosuka, Japan
| | - Takayuki Ikeda
- Visiting scholar, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, Calif
| | - Makoto Hirota
- Visiting scholar, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry Los Angeles, Calif
| | - Wonhee Park
- Visiting scholar, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, Calif
| | - Masaichi Chang-Il Lee
- Professor, Department of Clinical Care Medicine, Kanagawa Dental College, Yokosuka, Japan
| | - Takahiro Ogawa
- Professor, Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, Calif.
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Tapsir Z, Aly Ahmed HM, Luddin N, Husein A. Sealing ability of various restorative materials as coronal barriers between endodontic appointments. J Contemp Dent Pract 2013; 14:47-50. [PMID: 23579892 DOI: 10.5005/jp-journals-10024-1268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM To evaluate and compare the microleakage of various restorative materials used as coronal barriers between endodontic appointments. MATERIALS AND METHODS Eighty extracted human permanent posterior teeth were prepared for standardized access cavities with dimensions of 4 × 4 × 4 mm. The teeth were then randomly divided into four groups; Kalzinol, Caviton, GC Fuji IX and GC Fuji II LC. After incubation, the samples were immersed in 2% methylene blue for 7 days. The depth of penetration was measured using a digital macroscope after longitudinal sectioning of each tooth. Kruskal-Wallis (p < 0.05) and multiple Mann-Whitney test with Bonferroni correction (p < 0.008) were used for data analysis. RESULTS The degree of microleakage varied at the material/ tooth interface among the test materials, and the difference was statistically significant (p < 0.05). GC Fuji II LC group showed the least median microleakage value (0.8105 ± 0.305), followed by Caviton (1.1885 ± 0.396), GC Fuji IX (3.3985 ± 0.305) and Kalzinol (4.161 ± 0.853). CONCLUSION Within the limitations of this study, GC Fuji II LC exhibited the best marginal seal, and has the potential to be used as a suitable coronal barrier between endodontic appointments. CLINICAL SIGNIFICANCE Given the prime importance that dental practitioners should thoroughly restore any tooth with a suitable coronal barrier between endodontic appointments, this study shows that Fuji II LC has the ability to maintain a hermetic seal for 7 days.
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Affiliation(s)
- Zalilah Tapsir
- Department of General Dentistry, Bintulu Dental Clinic Lebuhraya Abang Galau, Bintulu, Malaysia
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Ong RM, Luddin N, Ahmed HMA, Omar NS. Cytotoxicity of accelerated white MTA and Malaysian white Portland cement on stem cells from human exfoliated deciduous teeth (SHED): An in vitro study. ACTA ACUST UNITED AC 2012; 33:19-23. [PMID: 23739319 DOI: 10.1016/j.sdj.2012.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The aim of this study was to compare the cytotoxicity of accelerated-set white MTA (AWMTA) and accelerated-set Malaysian white PC (AMWPC) on stem cells from human exfoliated deciduous teeth (SHED). The test materials were introduced into paraffin wax moulds after mixing with calcium chloride dihydrate and sterile distilled water. Subsequently, the set cement specimens were sterilized, incubated in a prepared Dulbecco's modified Eagle medium (DMEM) for seven days. The biomarker CD166 was used for characterization of SHED using flow cytometry. The material extracts were diluted at five different concentrations and incubated for 72h with SHED. The cell viability was evaluated using Dimethylthiazol diphenyltetrazolium bromide (MTT) assay, and the data was analysed using Mann-Whitney test (P<0.05). The results showed that AWMTA revealed significantly greater cell viability at 25 and 12.5mg/ml concentrations (P<0.05). Concomitantly, AMWPC exhibited greater cell viability at concentrations <12.5mg/ml and the results were significant at 1.563mg/ml (P<0.05). Both materials demonstrated moderate cytotoxicity at 25mg/ml and slight cytotoxicity at 6.25 and 3.125mg/ml. At 1.563mg/ml, no cytotoxic activity was merely observed with AMWPC. In conclusion, AMWPC exhibited favourable and comparable cell viability to that of AWMTA, and has the potential to be used as an alternative and less costly material in dental applications.
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Affiliation(s)
- Ren Ming Ong
- School of Dental Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
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Kleszczyński K, Fischer TW. Development of a short-term human full-thickness skin organ culture model in vitro under serum-free conditions. Arch Dermatol Res 2012; 304:579-87. [DOI: 10.1007/s00403-012-1239-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Revised: 04/16/2012] [Accepted: 04/18/2012] [Indexed: 10/28/2022]
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