Рarameters of spontaneous activation of basophils on dental materials with allergic rhinitis patients

2020 ◽  
Vol 25 (2) ◽  
pp. 148-151
Author(s):  
V. A. Kozlov ◽  
E. A. Satygo ◽  
S. G. Shakhaev
Keyword(s):  
Allergic Rhinitis ◽  
Zirconium Dioxide ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Chromium Alloy ◽  
Glass Ionomer ◽  
Nasal Breathing ◽  
Light Curing ◽  
Spontaneous Activation ◽  
Ionomer Cement

Relevance. Тhe quality of dental care is greatly influenced by the biocompatibility of the materials used. This problem is particularly acute in patients with a high level of sensitization, such as allergic rhinitis. Currently, the CAST-test is used to diagnose allergies and sensitization of the body. The method has 100% specificity and significantly complements the definition of IgE antibodies.Purpose. To determine the individual tolerance of dental materials in patients with allergic rhinitis.Materials and methods. 47 patients with allergic rhinitis were examined. All patients were sent to determine the test of spontaneous activation of peripheral blood basophils on dental materials: cobalt-chromium alloy; zirconium dioxide; glass ionomer cement; composite material; plastic for the basis of the prosthesis (non-monomer).Results. The Average values of the activation coefficient of blood basophils in patients with nasal breathing disorders were revealed for a kobolto-chrome alloy – 1.29 ± 0.02, for zirconium dioxide – 1.04 ± 0.02, for glass ionomer cement – 1.11 ± 0.04, for composite dental light – curing material – 1.24 ± 0.03, for plastic for prostheses (non-monomer) – 1.19 ± 0.02.Conclusion. The study shows the need for special attention to the planning of dental treatment in patients with nasal breathing difficulties, especially with allergic rhinitis. The frequency of detection of the coefficient of spontaneous activation of basophils test showed a 100% positive result for composite light-curing material and non-motionless plastic, in 91.5% of cases-for a cobolto chrome alloy. 100% negative result for zirconium diaxide and 82.9% of cases for glass ionomer cement.

The Effect of Hydroxyapatite on Bonding Strength in Light Curing Glass Ionomer Dental Cement

2006 ◽  
Vol 309-311 ◽  
pp. 881-884 ◽  
Author(s):  
M.H. Chae ◽  
Yong Keun Lee ◽  
Kyoung Nam Kim ◽  
Jae Hoon Lee ◽  
B.J. Choi ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Physical Properties ◽  
Bonding Strength ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Ambient Light ◽  
Glass Ionomer ◽  
Depth Of Cure ◽  
Light Curing ◽  
Ionomer Cement

The mineral phase of bone and teeth is mainly hydroxyapatite. Currently there are numerous researches being conducted on the effect of the addition of hydroxyapatite to dental materials. Among them, several studied were published stating that the addition of hydroxyapatite to composite resin or glass ionomer cement resulted in an improvement in bonding strength and physical properties Therefore, this study will investigate the effect that the addition of hydroxyapatite to light curing glass ionomer cement has on bonding strength. Two different light curing glass ionomer cement products were selected (FujiⅡLC, GC Cor, Japan and Vitremer™ , 3M/ESPE, USA) and hydroxyapatite was mixed into the light curing glass ionomer cement at various concentrations to create hydroxyapatite-light curing glass ionomer cement mixture. In order to confirm that hydroxyapatite-light curing glass ionomer cement met the basic requirements of dental materials, sensitivity to ambient light, depth of cure, and flexural strength were tested. From the results of the above mentioned tests, the hydroxyapatite-light curing glass ionomer cement with the most superior physical properties for each product (15% HA-Fuji Ⅱ LC, 20% HA-Vitremer™)was bonded to the teeth and then immersed in artificial saliva(36.5°C) for four weeks. Finally the sectioned surface was observed under SEM after measuring the bonding strength. As the hydroxyapatite concentration increased, the depth of cure decreased. However flexural strength increased and there was not much change in the sensitivity to ambient light. Bonding strength, which was the main focus of this study, increased with the addition of hydroxyapatie and scanning electron microscope findings show a more cohesive type of fracture in the material with bone like apatite material formation along the tooth-material interface.

scholarly journals Effects of ionizing radiation on surface properties of current restorative dental materials

2021 ◽  
Vol 32 (6) ◽  
Author(s):  
Débora Michelle Gonçalves de Amorim ◽  
Aretha Heitor Veríssimo ◽  
Anne Kaline Claudino Ribeiro ◽  
Rodrigo Othávio de Assunção e Souza ◽  
Isauremi Vieira de Assunção ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Surface Properties ◽  
Resin Composite ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Contact Angles ◽  
Glass Ionomer ◽  
Post Radiation ◽  
Restorative Dental Materials ◽  
Ionomer Cement

AbstractTo investigate the impact of radiotherapy on surface properties of restorative dental materials. A conventional resin composite—CRC (Aura Enamel), a bulk-fill resin composite—BFRC (Aura Bulk-fill), a conventional glass ionomer cement—CGIC (Riva self cure), and a resin-modified glass ionomer cement—RMGIC (Riva light cure) were tested. Forty disc-shaped samples from each material (8 mm diameter × 2 mm thickness) (n = 10) were produced according to manufacturer directions and then stored in water distilled for 24 h. Surface wettability (water contact angle), Vickers microhardness, and micromorphology through scanning electron microscopy (SEM) before and after exposition to ionizing radiation (60 Gy) were obtained. The data were statistically evaluated using the two-way ANOVA and Tukey posthoc test (p < 0.05). Baseline and post-radiation values of contact angles were statistically similar for CRC, BFRC, and RMGIC, whilst post-radiation values of contact angles were statistically lower than baseline ones for CGIC. Exposition to ionizing radiation statistically increased the microhardness of CRC, and statistically decreased the microhardness of CGIC. The surface micromorphology of all materials was changed post-radiation. Exposure to ionizing radiation negatively affected the conventional glass ionomer tested, while did not alter or improved surface properties testing of the resin composites and the resin-modified glass ionomer cement tested.

scholarly journals Apexogenesis of traumatized maxillary right central incisor: Case report with 4years follow up

2019 ◽  
Vol 7 (1) ◽  
pp. 8
Author(s):  
Mohammad Hammo DDS ◽  
Mazen Doumani DDS. MSc. ◽  
Adnan Habib DDS. MSc. PhD
Keyword(s):  
Composite Resin ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Permanent Teeth ◽  
Glass Ionomer ◽  
Central Incisor ◽  
Vital Pulp Therapy ◽  
Open Apices ◽  
Ionomer Cement

The main goal of vital pulp therapy is to preserve and maintain pulpal health in teeth that have been exposed to caries, trauma, and restorative procedures. This type of endodontic treatment is very important in young permanent teeth that have not reached their complete length and exhibit thin-walled roots and wide open apices. The developments in knowledge of pulpal physiology and immunology, beside to newly introduced dental materials, have changed the treatment approaches for teeth with involved pulps. This report describes a case of a young patient in whom maxillary right central incisor suffered crown fractures because of a traumatic accident. Pulpotomy with MTA were performed in order to achieve apexogenesis and the tooth was restored with a glass ionomer cement and composite resin. The patient was reviewed over 4years. 

Biocompatibility of various light-curing and one conventional glass-ionomer cement

Biomaterials ◽  
1998 ◽  
Vol 19 (6) ◽  
pp. 559-564 ◽  
Author(s):  
G. Leyhausen ◽  
M. Abtahi ◽  
M. Karbakhsch ◽  
A. Sapotnick ◽  
W. Geurtsen
Keyword(s):  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Light Curing ◽  
Ionomer Cement

scholarly journals Mechanical Properties Enhancement of Conventional Glass Ionomer Cement by Adding Zirconium Oxide Micro and Nanoparticles

2019 ◽  
Vol 25 (2) ◽  
pp. 72-81 ◽  
Author(s):  
Ali N. Alobiedy ◽  
Ali H. Alhille ◽  
Ahmed R. Al-Hamaoy
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Wear Rate ◽  
Zirconium Oxide ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Nano Particles ◽  
Glass Ionomer ◽  
Biaxial Flexural Strength ◽  
Ionomer Cement

The aim of this work is to enhance the mechanical properties of the glass ionomer cement GIC (dental materials) by adding Zirconium Oxide ZrO2 in both micro and nano particles. GIC were mixed with (3, 5 and 7) wt% of both ZrO2 micro and nanoparticles separately. Compressive strength (CS), biaxial flexural strength (BFS), Vickers Microhardness (VH) and wear rate losses (WR) were investigated. The maximum compression strength was 122.31 MPa with 5 wt. % ZrO2 micro particle, while 3wt% nanoparticles give highest Microhardness and biaxial flexural strength of 88.8 VHN and 35.79 MPa respectively. The minimum wear rate losses were 3.776µg/m with 7 wt. % ZrO2 nanoparticle. GIC-containing ZrO2 micro and nanoparticles is a promising restorative material with improved mechanical properties expect wear rate losses.  

COMPARISON OF CORONAL MICROLEAKAGE OF CAST POST AND CORE, CEMENTED WITH CONVENTIONAL GLASS IONOMER CEMENT AND GLASS IONOMER CEMENT INCORPORATED WITH NANO-HYDROXYAPATITE PARTICLES: AN IN VITRO STUDY

2021 ◽  
pp. 1-3
Author(s):  
Pragati Agrawal ◽  
Nalinakshamma M ◽  
Surendra Kumar G.P
Keyword(s):  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Chromium Alloy ◽  
Glass Ionomer ◽  
Cobalt Chromium ◽  
Cement Interface ◽  
Gutta Percha ◽  
Post And Core ◽  
Ionomer Cement

Statement of Problem: Microleakage is one of the major factors that determine the longevity of xed restoration. The type of luting agent used for cementation of post plays an important role in preventing bacterial microleakage. Purpose: To evaluate coronal microleakage of teeth restored with cast post and core cemented with conventional glass ionomer cement and nanohydroxyapatite incorporated glass ionomer cement. Materials and Method: 30 extracted single canal premolars were selected and endodontically treated by step-back technique, followed by obturation with gutta percha using zinc oxide eugenol sealer. Post space was prepared leaving 4mm of apical gutta percha and direct acrylic resin pattern of the root canal was made along with a core, with the help of pinjet system. This was then casted using cobalt-chromium alloy. The specimens were divided into 2 groups in which castings will be cemented using: Group 1, Conventional Glass Ionomer Cement; Group 2, Nano Hydroxyapatite incorporated Glass Ionomer Cement (6 wt%) Cemented teeth were stored in distilled water for 7 days and then immersed in silver nitrate dye for 6 hours followed by photochemical developing solution for 12 hours and nally sectioned into two halves mesiodistally. The degree of linear dye penetration into the coronal part of the specimens at dentin/cement interface was measured using a stereomicroscope at 20x magnication. Result: Coronal microleakage of cast post and core at tooth-cement interface, cemented with glass ionomer cement incorporated with 6% by weight of 80-100nm nano-hydroxyapatite particles and conventional glass ionomer cement were statistically signicant different with p = 0.015 by independent t test. The mean ± SD of conventional GIC was 2.47±0.74 and for nano-hydroxyapatite incorporated GIC was 1.73±0.80. Conclusion: Within the limitations of this study, it is concluded that the coronal microleakage of cast post and core at tooth-cement interface, cemented with glass ionomer cement incorporated with 6% by weight of 80-100nm nano-hydroxyapatite particles is less than that of conventional glass ionomer cement

Minimizing Dentinal Fluid Flow Associated with Gap Formation

2006 ◽  
Vol 85 (11) ◽  
pp. 1027-1031 ◽  
Author(s):  
D.N. Ratih ◽  
J.E.A. Palamara ◽  
H.H. Messer
Keyword(s):  
Fluid Flow ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Gap Formation ◽  
Bonding Agents ◽  
Dentinal Fluid Flow ◽  
Light Curing ◽  
Ionomer Cement

The relationship between gap formation and outward fluid flow and procedures to minimize both phenomena were investigated in extracted human premolars restored in vitro with MOD composite restorations. We hypothesized that either glass-ionomer cement (GIC) liners or low-shrinkage composite could reduce fluid flow related to gap formation. Two groups restored with bonding agents with either high- or low-shrinkage resin composites, and 2 groups restored by either conventional or light-cured GIC liner plus resin composite were compared (8 teeth/group). Fluid flow was measured with an automated apparatus. Baseline fluid flow was low and unchanged after bonding, but increased sharply (though transiently) after teeth were lined with GIC. Outward flow was significantly greater with conventional than with light-cured GIC. Inward fluid flow occurred during light-curing, followed by extensive, prolonged outward flow after curing. Low-shrinkage composite or GIC liners reduced gap formation and limited outward fluid flow. GIC liners promoted outward fluid flow during their setting reactions. Abbreviations: GIC, glass-ionomer cement; CEJ, cemento-enamel junction; MOD, mesio-occluso-distal; SEM, scanning electron microscopy.

scholarly journals Use of glass ionomer cement containing antibiotics to seal off infected dentin: a randomized clinical trial

2013 ◽  
Vol 24 (1) ◽  
pp. 68-73 ◽  
Author(s):  
Jainara Maria Soares Ferreira ◽  
Sérgio Luiz Pinheiro ◽  
Fábio Correia Sampaio ◽  
Valdenice Aparecida de Menezes
Keyword(s):  
Clinical Trial ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Antibacterial Properties ◽  
Deciduous Teeth ◽  
Controlled Clinical Trial ◽  
Glass Ionomer ◽  
Double Blind ◽  
Significance Level ◽  
Ionomer Cement

Dental materials with antibacterial properties can prevent the harmful effects caused by oral cariogenic bacteria. This double-blind controlled clinical trial evaluated the performance of a glass ionomer cement (GIC) added with antibiotics for sealing infected dentin in atraumatic restorations of primary molars. The study enrolled 45 children (45 teeth) between 5 and 8 years of age, of both genders, divided into two groups: GC (n=22), where cavities were lined with a conventional GIC (Vidrion F) and GA (n=23), with cavities lined with Vidrion F added with 1% each of metronidazole, ciprofloxacin and cefaclor antibiotic. Both groups were restored with Ketac Molar Easymix. Molars with carious lesions on the inner half of dentin without clinical or radiographic pulp damage were selected. Patients were evaluated clinically (pain, fistulas or mobility) and radiographically (area of caries, periapical region and furcation) after 1, 3, 6 and 12 months. For statistical analysis, chi-squared or Fisher's exact tests were used with a 5% significance level. GA (82.6-95.7%) had better results than GC (12.5-36.4%) in all evaluations (p<0.05) and the difference in the success rate was 46.2-72.5% higher for GA. The use of the antibiotic-containing GIC liner on infected dentin proved satisfactory when applied in deciduous teeth.

scholarly journals Degree of Conversion and Hardness of Two Different Systems of the VitrebondTM Glass Ionomer Cement Light Cured with Blue LED

2013 ◽  
Vol 14 (2) ◽  
pp. 244-249 ◽  
Author(s):  
Mateus Rodrigues Tonetto ◽  
Marcelo Ferrarezi de Andrade ◽  
Shelon Cristina Souza Pinto ◽  
Alvaro Henrique Borges ◽  
Matheus Coelho Bandéca ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Hardness Test ◽  
Degree Of Conversion ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Blue Led ◽  
Light Curing ◽  
New Formulation ◽  
Storage Times ◽  
Ionomer Cement

ABSTRACT This study investigated the physicochemical properties of the new formulation of the glass ionomer cements through hardness test and degree of conversion by infrared spectroscopy (FTIR). Forty specimens (n = 40) were made in a metallic mold (4 mm diameter x 2 mm thickness) with two resin-modified glass ionomer cements, VitrebondTM and VitrebondTM Plus (3M/ ESPE). Each specimen was light cured with blue LED with power density of 500 mW/cm2 during 30 s. Immediately after light curing, 24h, 48h and 7 days the hardness and degree of conversion was determined. The Vickers hardness was performed by the MMT-3 microhardness tester using load of 50 gm force for 30 seconds. For degree of conversion, the specimens were pulverized, pressed with KBr and analyzed with FT-IR (Nexus 470). The statistical analysis of the data by ANOVA showed that the VitrebondTM and VitrebondTM Plus were no difference significant between the same storage times (p > 0.05). For degree of conversion, the VitrebondTM and VitrebondTM Plus were statistically different in all storage times after light curing. The VitrebondTM showed higher values than VitrebondTM Plus (p < 0.05). The performance of VitrebondTM had greater results for degree of conversion than VitrebondTM Plus. The correlation between hardness and degree of conversion was no evidence in this study. How to cite this article Calixto LR, Tonetto MR, Pinto SCS, Barros ED, Borges AH, Lima FVP, de Andrade MF, Bandéca MC. Degree of Conversion and Hardness of Two Different Systems of the VitrebondTM Glass Ionomer Cement Light Cured with Blue LED. J Contemp Dent Pract 2013;14(2): 244-249.

scholarly journals Human Remains Identification Using Micro-CT, Spectroscopic and A.I. Methods in Forensic Experimental Reconstruction of Dental Patterns After Concentrated Acid Significant Impact

2022 ◽  
Author(s):  
Andrej Thurzo ◽  
Viera Jančovičová ◽  
Miroslav Hain ◽  
Milan Thurzo ◽  
Bohuslav Novák ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Computed Tomography ◽  
Sulfuric Acid ◽  
3D Reconstruction ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Human Remains ◽  
Glass Ionomer ◽  
Dental Patterns ◽  
Ionomer Cement

(1) Human teeth are the most resilient tissues in the body. However, exposure to concentrated acids might lead to their obliteration, thus making human identification difficult. Teeth often contain dental restorations from materials that are even more resilient to acid impact. This paper introduces novel method of 3D reconstruction of dental patterns as a crucial step for digital identification with dental records.; (2) With combination of modern methods of Micro-Computed Tomography, Cone Beam Computed Tomography, Attenuated Total Reflection in conjunction with Fourier-Transform Infrared Spectroscopy and Artificial Intelligence Convolutional Neural Network algorithms, the paper presents the way of 3D dental pattern reconstruction and human remains identification. Research studies morphology of teeth, bone and dental materials (Amalgam, Composite, Glass-ionomer cement) under different periods of exposure to 75% sulfuric acid; (3) Results reveal significant volume loss in bone, enamel, dentine and as well glass-ionomer cement. Results also reveal significant resistance of composite and amalgam dental materials to sulfuric acid impact, thus serving as strong parts in the dental pattern mosaic. Paper also introduces probably first successful artificial intelligence application in automated forensic CBCT segmentation.; (4) Interdisciplinary cooperation utilizing mentioned technologies can solve problem of human remains identification with 3D reconstruction of dental patterns and their 2D projections over existing ante-mortem records.

Sign in / Sign up

Export Citation Format

Share Document