scholarly journals Fracture Behavior and Integrity of Different Direct Restorative Materials to Restore Noncarious Cervical Lesions

Polymers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 4170
Author(s):  
Emese Battancs ◽  
Márk Fráter ◽  
Tekla Sáry ◽  
Emese Gál ◽  
Gábor Braunitzer ◽  
...  
Keyword(s):  
Fracture Resistance ◽  
Fracture Behavior ◽  
Resin Composite ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Fatigue Loading ◽  
Cervical Lesions ◽  
Loading Test ◽  
Restorative Materials ◽  
Static Loading Test

The purpose of this study was to analyze the fracture resistance and marginal leakage of noncarious cervical lesion (NCCL) restorations made of different restorative materials. Eighty upper premolars were randomly divided into four groups (n = 20/group). Standardized NCCL cavity preparations were performed on the buccal surface of the teeth and then restored with four different materials. Group 1: Packable resin composite (PC); Group 2: Highly flowable resin composite (HF); Group 3: Low flowable resin composite (LF); Group 4: Resin modified glass ionomer cement (RMGIC). After restorations were completed, cyclic and static fracture behavior was evaluated using a loading testing machine. Extra restored teeth were sectioned and then stained (n = 5/group). The specimens were viewed under a stereo microscope and the percentage of microgaps at the tooth–restoration interface was calculated. All restored teeth survived after fatigue loading. There was no statistically significant (p > 0.05) difference between the tested restorations after the static loading test. NCCLs restored with highly filled flowable composite showed the least microleakage among the tested groups (p < 0.05). The investigated restorative materials are acceptable for NCCL restorations in terms of fracture resistance and microleakage.

scholarly journals Evaluation of Fracture Resistance of Endodontically Treated Maxillary Premolars Restored with Different Restorative Materials - An In Vitro Study

2021 ◽  
Vol 10 (7) ◽  
pp. e5110716150
Author(s):  
Walber Maeda ◽  
Wayne Martins Nascimento ◽  
Marcelo Santos Coelho ◽  
Danilo de Luca Campos ◽  
João Paulo Drumond ◽  
...  
Keyword(s):  
Fracture Resistance ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Resistance Testing ◽  
Control Group ◽  
Glass Ionomer ◽  
Restorative Materials ◽  
Maxillary Premolars ◽  
Ionomer Cement

Aim: In this study was evaluated the fracture resistance of endodontically treated maxillary premolars restored with      different restorative materials. Methods: Sixty maxillary premolars were submitted to the same mesio-occlusal-distal cavity preparation, endodontic treatment and divided into 5 groups (n = 10): Coltosol Group – GCO restored with calcium silicate material; Glass Ionomer Cement Group – GGIC, restored with Maxxion R; Modified Glass Ionomer Cement – GMGIC, restored with Gold Label 2; Composite Group - GC, restored with Z100, and the positive control group (GP) - left unrestored. One group remained intact (n=10) serving as negative control (GN). Samples were subjected to fracture resistance testing by the universal testing machine until fracture occurred and was registered in newtons (N). Fracture pattern was assessed and described as favorable or unfavorable. The results were statistically analyzed by 1-way analysis of variance and the post hoc Tukey test with significant statistical difference at P < 0.05.  Results: Higher fracture resistance results were found for GC (1,128.35 ± 249.17), GMGIC (1,250.77 ± 173.29), and GN (1,277.22 ± 433.44) (P < .05). More favorable fractures were observed in the GCO (6), GC (7), and GN (7) (P < .05). Conclusion: Teeth restored with composite and modified GIC presented the same resistance as intact teeth. Teeth restored with Coltosol and GGIC presented similar resistance to unrestored teeth.

scholarly journals Marginal Leakage of Endodontic Temporary Restorative Materials around Access Cavities Prepared with Pre-Endodontic Composite Build-Up: An In Vitro Study

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1700
Author(s):  
Atsushi Kameyama ◽  
Aoi Saito ◽  
Akiko Haruyama ◽  
Tomoaki Komada ◽  
Setsuko Sugiyama ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Zinc Oxide Eugenol ◽  
Restorative Materials ◽  
Ionomer Cement

This study aimed to examine the marginal seal between various commercial temporary restorative materials and exposed dentin/built-up composite. Sixty bovine incisors were cut above the cemento-enamel junction, and half of the dentin was removed to form a step, which was built up using flowable resin composite. The root canals were irrigated, filled with calcium hydroxide, and sealed using one of six temporary sealing materials (hydraulic temporary restorative material, temporary stopping material, zinc oxide eugenol cement, glass-ionomer cement, auto-cured resin-based temporary restorative material, and light-cured resin-based temporary restorative material) (n = 10 for each material). The samples were thermocycled 500 times and immersed in an aqueous solution of methylene blue. After 2 days, they were cut along the long axis of the tooth and the depth of dye penetration was measured at the dentin side and the built-up composite side. For the margins of the pre-endodontic resin composite build-up, the two resin-based temporary restorative materials showed excellent sealing. Hydraulic temporary restorative material had a moderate sealing effect, but the sealing effect of both zinc oxide eugenol cement and glass-ionomer cement was poorer.

Fracture Strength and Fracture Patterns of Root-filled Teeth Restored With Direct Resin Composite Restorations Under Static and Fatigue Loading

2014 ◽  
Vol 39 (2) ◽  
pp. 181-188 ◽  
Author(s):  
NA Taha ◽  
JE Palamara ◽  
HH Messer
Keyword(s):  
Fracture Strength ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Fatigue Loading ◽  
Test System ◽  
Fracture Load ◽  
Composite Restorations ◽  
Fracture Patterns ◽  
Lower Load ◽  
Number Of Cycles

SUMMARY Aim To assess fracture strength and fracture patterns of root-filled teeth with direct resin composite restorations under static and fatigue loading. Methodology MOD cavities plus endodontic access were prepared in 48 premolars. Teeth were root filled and divided into three restorative groups, as follows 1) resin composite; 2) glass ionomer cement (GIC) core and resin composite; and 3) open laminate technique with GIC and resin composite. Teeth were loaded in a servohydraulic material test system. Eight samples in each group were subjected to stepped fatigue loading: a preconditioning load of 100 N (5000 cycles) followed by 30,000 cycles each at 200 N and higher loads in 50-N increments until fracture. Noncycled teeth were subjected to a ramped load. Fracture load, number of cycles, and fracture patterns were recorded. Data were analyzed using two-way analysis of variance and Bonferroni tests. Results Fatigue cycling reduced fracture strength significantly (p&lt;0.001). Teeth restored with a GIC core and a laminate technique were significantly weaker than the composite group (379±56 N, 352±67 N vs 490±78 N, p=0.001). Initial debonding occurred before the tooth underwent fracture. All failures were predominantly adhesive, with subcrestal fracture of the buccal cusp. Conclusions Resin composite restorations had significantly higher fracture strength than did other restorations. Fatigue cycled teeth failed at lower load than did noncycled teeth.

scholarly journals Protection Offered by Root-surface Restorative Materials against Biofilm Challenge

2007 ◽  
Vol 86 (5) ◽  
pp. 431-435 ◽  
Author(s):  
H.K. Yip ◽  
J. Guo ◽  
W.H.S. Wong
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Root Surface ◽  
Glass Ionomer ◽  
Streptococcus Sobrinus ◽  
Oral Biofilm ◽  
Artificial Mouth ◽  
Restorative Materials ◽  
Root Surfaces ◽  
Ionomer Cement

The prevalence of root-surface caries is increasing. We hypothesized that some restorative materials are protective against cariogenic challenge on root surfaces. Our goal was to study the effects of different restorative materials on root surfaces incubated with an oral biofilm generated in an artificial mouth. A biofilm of Streptococcus mutans, Streptococcus sobrinus, Lactobacillus rhamnosus, and Actinomyces naeslundii was co-cultured for 21 days on 24 glass-ionomer cement, resin-modified glass-ionomer cement, or resin-composite-restored root surfaces. These surfaces were then examined with Fourier transform infrared spectroscopy and scanning electron energy-dispersive spectroscopy. Only glass-ionomer restorations showed a significant increase in log calcium-to-phosphorus ratio (P < 0.01), and a significantly lower log amide I-to-hydrogen phosphate ratio on the root surface after incubation in the artificial mouth. Glass-ionomer restoratives conferred a preventive effect on the root surfaces against initial cariogenic challenge with a mixed-species oral biofilm without therapeutic intervention.

Effect of Restorative Protocol on Cuspal Strain and Residual Stress in Endodontically Treated Molars

2016 ◽  
Vol 41 (1) ◽  
pp. 23-33 ◽  
Author(s):  
RAS Pereira ◽  
AA Bicalho ◽  
SD Franco ◽  
D Tantbirojn ◽  
A Versluis ◽  
...  
Keyword(s):  
Residual Stress ◽  
Fracture Resistance ◽  
Composite Resin ◽  
Glass Ionomer Cement ◽  
Shrinkage Strain ◽  
Glass Ionomer ◽  
Pulp Chamber ◽  
Biomechanical Behavior ◽  
Restorative Materials ◽  
Ionomer Cement

SUMMARY Objectives To evaluate the effect of the restorative protocol on cuspal strain, fracture resistance, residual stress, and mechanical properties of restorative materials in endodontically treated molars. Methods Forty-five molars received mesio-occlusal-distal (MOD) Class II preparations and endodontic treatment followed by direct restorations using three restorative protocols: composite resin (CR) only (Filtek Supreme, 3M-ESPE), resin modified glass ionomer cement in combination with CR (Vitremer, 3M-ESPE in pulp chamber and Filtek Supreme in MOD cavity), conventional glass ionomer cement in combination with composite resin (CGI-CR) (Ketac Fil, 3M-ESPE in pulp chamber and Filtek Supreme in MOD cavity). Cuspal strain was measured using strain gauges, and fracture resistance was tested with an occlusal load. Elastic modulus (EM) and Vickers hardness (VH) of the restorative materials were determined at different depths using dynamic microhardness indentation. Curing shrinkage was measured using the strain gauge technique. The restorative protocols were also simulated in finite element analysis (FEA). The shrinkage strain, cuspal strain, EM, VH, and fracture resistance data were statistically analyzed using split-plot analysis of variance and Tukey test (p=0.05). Residual shrinkage stresses were expressed in modified von Mises equivalent stresses. Results Shrinkage strain values (in volume %) were Ketac Fil (0.08±0.01) &lt; Vitremer (0.18±0.01) &lt; Filtek Supreme (0.54±0.03). Cuspal strain was higher and fracture resistance was lower when using CR only compared with the techniques that used glass ionomer. The EM and VH of the materials in the pulp chamber were significantly lower for glass ionomer. The FEA showed that using CR only resulted in higher residual stresses in enamel and root dentin close to the pulp chamber than the combinations with glass ionomers (RMGI-CR and CGI-CR). Conclusions The choice of restorative protocol significantly affected the biomechanical behavior of endodontically treated molars. Using glass ionomer to fill the pulp chamber is recommended when endodontically treated molars receive direct composite restorations because it reduces cuspal strain and increases fracture resistance.

scholarly journals Gambaran Penggunaan Resin Komposit dan Semen Ionomer Kaca Sebagai Bahan Restorasi di Poli Gigi Rumah Sakit Gunung Maria Tomohon Tahun 2012

e-GIGI ◽  
2013 ◽  
Vol 1 (2) ◽  
Author(s):  
Michael Sumolang
Keyword(s):  
Composite Resin ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Dental Resin ◽  
Anterior Teeth ◽  
Restorative Materials ◽  
Composite Resin Restorations ◽  
Ionomer Cement ◽  
Resin Restorations

Gigi yang terserang kariesdapatdirawatdenganmenggunakanbahanrestorasi. Resin komposit dan semen ionomer kacamerupakanbahanyangdigunakanuntukperawatanrestorasi di poli gigi RS Gunung Maria Tomohon.Tujuanpenelitianiniuntukmengetahuigambaranpenggunaanbahanrestorasi resin kompositdan semen ionomerkaca di poligigi RSGunung Maria Tomohontahun 2012. Penelitianinimerupakanpenelitiandeskrpitif, data diambildarirekammedispasienrestorasidenganmetodetotal sampling.Data yang didapatyaitujumlah rekammedis pasien restorasi pada tahun 2012 sebanyak 268 danjumlahgigi yang direstorasisebanyak 387.Gigi yang direstorasimenggunakanbahan resin kompositsebanyak 207 gigi, sedangkangigi yang direstorasimenggunakan semen ionomerkacasebanyak 180 gigi.Hasilpenelitianinidibagiberdasarkanusia, jeniskelamin, elemengigidandiagnosa. Hasilpenelitianmenunjukankategoriusiadewasalebihseringmelakukanperawatanretorasi resin komposit dengan 145 gigi (70%) dan semen ionomerkaca dengan 106 gigi (58,8%) yang direstorasi, pasienperempuanlebihseringmelakukanperawatanrestorasiresin komposit dengan 117 (59,4%) dan semen ionomerkaca dengan 101 (56%) gigi yang direstorasi. Gigi bagian anterior seringdirestorasidengan menggunakan resin komposit dan gigibagian posterior seringdirestorasimenggunakan semen ionomerkaca.Hiperemiapulpamerupakanpenyakit yang paling didiagnosadan paling seringmendapatkanperawatanrestorasi resin komposit dengan 179 kasus (86%)dan semen ionomerkaca 157 kasus (87,3%).Kata Kunci:bahan restorasi, resin komposit, semen ionomerkacaABSTRACT Dental caries infected can be treated with restorative materials. Resin composites and glass ionomer cement is a material used for dental restorative treatment on poly Hospital Gunung Maria Tomohon. The purpose of this study to describe the use of composite resin restorations and glass ionomer cement in the teeth poly Hospital Gunung Maria Tomohon in 2012. This research is deskrpitif , data extracted from medical records of patients with restoration of total sampling.Data method obtained the restoration of the patient's medical record number in 2012 as many as 268 and the number of restored teeth as much as 387. Restored teeth using composite resin materials as much as 207 teeth, whereas the teeth restored with glass ionomer cement as many as 180 teeth. The results are divided based on age, sex, dental and diagnostic elements. The results showed the adult age category more often retorasi care dental resin composite with 145 (70 %) and glass ionomer cement with 106 teeth (58,8 %) were restored, female patients were more frequent maintenance of composite resin restorations with 117 (59,4 %) and glass ionomer cement with 101(56 %) restored teeth. Anterior teeth are restored using gigibagian posterior composite resin and glass ionomer cement seringdirestorasimenggunakan. Pulp hyperemia is the most diagnosed diseases and most often get care composite resin restorations with 179 cases (86 %) and glass ionomer cement 157 cases (87,3%). Keywords : restorative materials, composite resin, glass ionomer cement

scholarly journals Effect of alcohol containing and alcohol free mouth rinses on microhardness of three esthetic restorative materials

2014 ◽  
Vol 6 (1) ◽  
pp. 5-8
Author(s):  
Vasundhara Shivanna ◽  
Rucha Nilegaonkar
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Mouth Rinse ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Mouth Rinses ◽  
Restorative Materials ◽  
And Control ◽  
Ionomer Cement ◽  
Daily Application

Abstract Introduction Daily application of mouth rinses has been recommended for the prevention and control of caries and periodontal disease. Aims & Objectives The aim of this study was to evaluate the effect of alcohol-containing and alcohol-free mouth rinses on the microhardness of three restorative materials – resin composite (Filtek Z350XT), light cure glass ionomer cement (Vitremer) and conventional restorative glass ionomer cement (GC Fuji II). Methods Twenty samples of each restorative material were fabricated and their microhardness values were checked at 100g load and 15 seconds dwell time. Ten samples of each restorative material were stored in alcohol containing mouth rinse (Listerine) and ten samples each were stored in alcohol free mouth rinse (Hiora) for 12 hours. At the end of the test period microhardness was measured with a Vickers microhardness tester. Results Alcohol containing mouth rinses reduced the microhardness values of composite and light cure glass ionomer significantly more than alcohol free mouth rinses. Reduction in the microhardness value of conventional restorative glass ionomer cement was similar for both alcohol containing and alcohol free mouth rinses. Conclusion Both mouth rinses showed reduction in microhardness values of all three restorative materials, with more reduction caused due to alcohol containing mouth rinses in composite and light cure glass ionomer. How to cite this article Vasundhara S, Rucha N. Effect of alcohol containing and alcohol free mouth rinses on microhardness of three esthetic restorative materials. CODS J Dent 2014;6;5-8

scholarly journals Time-dependent Variation in Compressive Strengths of Three Posterior Esthetic Restorative Materials: An in vitro Study

2016 ◽  
Vol 6 (3) ◽  
pp. 63-65
Author(s):  
Anjna Sharma ◽  
Pankaj Mishra
Keyword(s):  
Testing Machine ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Composite Resins ◽  
Time Dependent ◽  
Glass Ionomer ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer ◽  
Restorative Materials

ABSTRACT Aim To compare the compressive strengths of composite resins and resin-modified glass ionomer cements (RMGICs) at different times. Materials and methods A total of 36 samples were prepared, 12 samples of each group, composite resins Filtek Z 250, Filtek Z 350, and resin-modified glass ionomer cement. Compressive strengths of specimens were measured after 1, 24 hours, and 7 days. Test was carried out on a “Universal Testing Machine” with cross-head speed of 5 mm/min. Results There was a significant difference between all the three restorative materials. Analysis of variance showed that mean compressive strengths of Z 250 after 1, 24 hours were higher than Z 350 and RMGIC (p < 0.05). The mean compressive strengths were reduced after 7 days in all the three groups, but after 7 days, the values of Z 250 when compared with the Z 350 and RMGIC were higher. Conclusion The study demonstrated that compressive strengths of hybrid composite resins (Z 250) were significantly higher than that of nanocomposites (Z 350) and RMGIC. How to cite this article Sharma A, Mishra P, Mishra SK. Time-dependent Variation in Compressive Strengths of Three Posterior Esthetic Restorative Materials: An in vitro Study. Int J Prosthodont Restor Dent 2016;6(3):63-65.

scholarly journals RESTORATIVE DENTAL MATERIALS

2018 ◽  
Vol 25 (01) ◽  
pp. 140-149
Author(s):  
Maleeha Khurram ◽  
Khurram Jah Zafar ◽  
Aneela Qaisar ◽  
Tahmeena Atiq ◽  
Sohail Abbas Khan
Keyword(s):  
Resin Composite ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Age Groups ◽  
Tooth Surface ◽  
Base Line ◽  
Initial Surface ◽  
Micro Hardness ◽  
Advantages And Disadvantages ◽  
Restorative Materials

Introduction: Erosion is an escalating problem in all age groups. Dental erosioncan be defined as painless irreversible loss of dental hard tissue due to chemical processwithout the involvement of microorganisms. There are several causes of erosion includingacidic foods and drinks. They are not only harmful to teeth but it is one of the main causes offailure of restoration. Erosion is one of the main challenges to restorative materials. Therefore,the restorative materials used in the mouth should resist or show minimal change in thesesituations. A variety of restorative materials are currently recommended for erosive lesions,including resin modified glass ionomer cement, resin composite and amalgam. Each materialhas its own advantages and disadvantages, which are considered before selecting them asrestorative materials. Objectives: To compare the surface micro-hardness of three restorativematerials when exposed to three acidic beverages and distilled water. Study design: This wasan experimental study. Setting: de’Montmorency College of dentistry in collaboration withPakistan council of scientific and industrial research (PCSIR) Lahore. Period: 6 months, Nov2014- April 2015. Material & Methods: Ninety six disc specimens prepared with resin modifiedglass ionomer, resin composite and amalgam restorative materials. The initial surface microhardnesstest was carried out at 1 day after mixing (before immersion) using micro-hardnesstesting machine. After base line study of micro-hardness the material specimens were subjectedto one of the storage media which was comprised of cola, apple juice, orange juice and distilledwater as control. Quantitative assessment of final surface micro-hardness was done at 2, 5 and7 days after immersion. The values obtained as base line and final vickers hardness number(VHN) for each specimen were subjected to statistical analysis. Results: Exposure to acidicbeverages decreased the surface micro-hardness of all the three restorative materials (P<0.05),while distal water did not affect the surface micro-hardness of any material. The resin modifiedGIC showed greatest reduction in surface micro-hardness as compared to Amalgam and ResinComposite. The cola produced the greatest degradation effect. Conclusion: Selection ofrestorative materials should be considered in patients with tooth surface loss, especially thosewith high risk for erosive conditions. In terms of materials evaluated for this study Amalgam andResin Composite provides the greatest stability under acidic conditions.

Mechanical behavior of sandwich panels with hybrid face sheets and embedded super-elastic SMA wires under quasi-static loading: An experimental investigation

2020 ◽  
pp. 105678952095346
Author(s):  
SA Masoudi Moghaddam ◽  
M Yarmohammd Tooski ◽  
M Jabbari ◽  
AR Khorshidvand
Keyword(s):  
Hybrid Composite ◽  
Static Loading ◽  
Testing Machine ◽  
Sandwich Panels ◽  
Front Face ◽  
Loading Test ◽  
Damage Level ◽  
Static Loading Test ◽  
Force Displacement ◽  
Composite Face

In this paper the experimental behavior of sandwich panels with hybrid composite face sheets and SMA wires under quasi-static loading test was investigated. The square-shaped sandwich panel was composed of a foam core and hybrid composite face sheets consisted of carbon-epoxy and glass-epoxy laminates, in which pre-strained super-elastic SMA wires were placed between the laminates. Sandwich panels had three types of layouts, with symmetric and asymmetric face sheets and with or without the SMA wires between the layers of the faces of the panel. The panels were subjected to quasi-static loading using the Universal testing machine Zwick 250H. The response of quasi-static loading was presented as force-displacement diagrams for sandwich panels. Moreover, the damage morphology of panels after quasi-static loading test was presented by scanning electron microscope (SEM) and the damaged surfaces of the panels were estimated by active infrared thermography of the damage surface. Through comparing the damage level on the sandwich panels, the effect of the presence of the SMA wires, as well as the symmetry or asymmetry of the panel surfaces in reinforcing the structure and reducing the level of damage caused by quasi-static loading were investigated. The comparison of the behavior of the panels under the quasi-static loading test indicated that the use of SMA wires in the front face and the asymmetry of the surfaces were more effective and reinforced by applying more carbon layers in the back face to increase panel resistance.

Sign in / Sign up

Export Citation Format

Share Document