Impact of the Porosity from Incremental and Bulk Resin Composite Filling Techniques on the Biomechanical Performance of Root-Treated Molars

2021 ◽  
Author(s):  
RAS Pereira ◽  
PBF Soares ◽  
AA Bicalho ◽  
LM Barcelos ◽  
LRS Oliveira ◽  
...  
Keyword(s):  
Fracture Mode ◽  
Fracture Resistance ◽  
Composite Resin ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
High Viscosity ◽  
Composite Resins ◽  
Glass Ionomer ◽  
Pulp Chamber ◽  
Ionomer Cement

SUMMARY Objectives: To analyze the effect of the porosity caused by incremental and bulk resin composite filling techniques using low- and high-viscosity composite resins on the biomechanical performance of root-treated molars. Methods: Forty intact molars received standardized mesio-occlusal-distal (MOD) cavity preparation, were root treated, and randomly divided into four groups with different filling techniques (n=10). The first involved two incremental filling techniques using VIT/Z350XT, a nanofilled composite resin (Filtek Z350XT, 3M ESPE) associated with a resinmodified glass ionomer cement, and resin-modified glass ionomer cement (RMGIC; Vitremer, 3M ESPE) for filling the pulp chamber. The second involved TPH/VIT, a microhybrid composite resin TPH3 Spectrum associated with Vitremer. The third and fourth involved two bulk-fill composite resins: SDR/TPH, a low-viscosity resin composite (Surefill SDR flow, Dentsply) associated with TPH3 Spectrum, and POST, a high-viscosity bulkfill resin composite (Filtek Bulk Fill Posterior, 3M ESPE). The volume of the porosity inside the restoration was calculated by micro-CT. The cusp deformation caused by polymerization shrinkage was calculated using the strain-gauge and micro-CT methods. The cusp deformation was also calculated during 100 N occlusal loading and loading to fracture. The fracture resistance and fracture mode were recorded. Data were analyzed by one-way analysis of variance and Tukey test. The fracture mode was analyzed by the χ2 test. The volume of the porosity was correlated with the cusp deformation, fracture resistance, and fracture mode (α=0.05). Results: Incremental filling techniques associated with RMGIC resulted in a significantly higher porosity than that of both bulk-fill techniques. However, no significant difference was found among the groups for the fracture resistance, fracture mode, and cusp deformation, regardless of the measurement time and method used. No correlation was observed between the volume of the porosity and all tested parameters. Conclusions: The porosity of the restorations had no influence on the cuspal deformation, fracture resistance, or fracture mode. The use of the RMGIC for filling the pulp chamber associated with incremental composite resins resulted in similar biomechanical performance to that of the flowable or regular paste bulk-fill composite resin restorations of root-treated molars.

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) < Vitremer (0.18±0.01) < 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 PENGGUNAAN BAHAN TUMPATAN DI RUMAH SAKIT GIGI DAN MULUT PSPDG FAKULTAS KEDOKTERAN UNSRAT PADA TAHUN 2014

e-GIGI ◽  
2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Dewi Y. Anang ◽  
Ni Wayan Mariati ◽  
Christy N. Mintjelungan
Keyword(s):  
Composite Resin ◽  
Dental Treatment ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Main Component ◽  
Dental Restorative ◽  
Material Composite ◽  
Ionomer Cement

Abstract: Resin composite has been known since the sixtieth generation and generally it is known as the dentists’ cosmetic restorative material. Amalgam is the oldest restorative material and it is famous due to its mechanical strength, endurance, and less expensive. Glass ionomer cement is an isochromatic tooth dentifrice; its main component is liquid consisted of water and polyacid, and a kind of fluoroaluminosilicate glass powder. This study aimed to obtain the profile of patients using dental restorative composite at the RSGM Manado in 2014. This was a descriptive retrospective study. There were 400 dental samples from the medical record categorized according to gender, age, kinds of treatment, and occupation. The results showed that dental treatment with filling was most frequent among females (65%) compared to males (35%). Most of the subjects (70%) were 21-30 years old. Moreover, most of the subjects (62.5%) used amalgam as the restorative material.Keywords: restorative material, composite resin, amalgam, GICAbstrak: Resin komposit ialah tumpatan pada generasi ke 60-an, dan secara umum dikenal sebagai bahan tumpatan kosmetik dentis. Amalgam merupakan bahan restorasi tertua dan cukup terkenal di masyarakat luas oleh karena kekuatan, daya tahan, dan harganya yang relatif murah. Glass Ionomer Cement ialah bahan tambal sewarna gigi yang komponen utamanya terdiri dari likuid yang merupakan gabungan air dengan polyacid (Asam poliakrilat, maleat, itakonat, tartarat) dan bubuk berupa fluoroaluminosilicate glass. Penelitian ini bertujuan untuk mengetahui gambaran pasien yang menggunakan tumpatan gigi di RSGM Unsrat pada tahun 2014. Jenis penelitian ini deskriptif retrospektif. Jumlah data penelitian yang didapat yaitu 400 sampel data dental dari rekam medik dan dikategorikan sesuai jenis kelamin, usia, jenis perawatan dan pekerjaan. Hasil penelitian menunjukkan perawatan dengan bahan tumpatan lebih sering dilakukan oleh pasien berjenis kelamin perempuan (65%) dibandingkan laki-laki (35%). Distribusi subyek terbanyak pada usia 21-30 tahun (70%). Sebagian besar (62,5%) menggunakan bahan tumpatan amalgam.Kata kunci: tumpatan, resin komposit, amalgam, GIC

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 Comparison of Shear Bond Strength of Resin Reinforced Chemical Cure Glass Ionomer, Conventional Chemical Cure Glass Ionomer and Chemical Cure Composite Resin in Direct Bonding Systems: An in vitro Study

2013 ◽  
Vol 14 (1) ◽  
pp. 21-25 ◽  
Author(s):  
T Praveen Kumar Reddy ◽  
Kolasani Srinivasa Rao ◽  
Garlapati Yugandhar ◽  
B Sunil Kumar ◽  
SN Chandrasekhar Reddy ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Glass Ionomer Cement ◽  
Composite Resins ◽  
Glass Ionomer ◽  
Bonding System ◽  
Bonding Systems ◽  
Ionomer Cement

ABSTRACT The acid pretreatment and use of composite resins as the bonding medium has disadvantages like scratching and loss of surface enamel, decalcification, etc. To overcome disadvantages of composite resins, glass ionomers and its modifications are being used for bonding. The study was conducted to evaluate the efficiency of resin reinforced glass ionomer as a direct bonding system with conventional glass ionomer cement and composite resin. The study showed that shear bond strength of composite resin has the higher value than both resin reinforced glass ionomer and conventional glass ionomer cement in both 1 and 24 hours duration and it increased from 1 to 24 hours in all groups. The shear bond strength of resin reinforced glass ionomer cement was higher than the conventional glass ionomer cement in both 1 and 24 hours duration. Conditioning with polyacrylic acid improved the bond strength of resin reinforced glass ionomer cement significantly but not statistically significant in the case of conventional glass ionomer cement. How to cite this article Rao KS, Reddy TPK, Yugandhar G, Kumar BS, Reddy SNC, Babu DA. Comparison of Shear Bond Strength of Resin Reinforced Chemical Cure Glass Ionomer, Conventional Chemical Cure Glass Ionomer and Chemical Cure Composite Resin in Direct Bonding Systems: An in vitro Study. J Contemp Dent Pract 2013;14(1):21-25.

The Effect of Resin-modified Glass-ionomer Cement Base and Bulk-fill Resin Composite on Cuspal Deformation

2016 ◽  
Vol 41 (2) ◽  
pp. 208-218 ◽  
Author(s):  
KV Nguyen ◽  
RH Wong ◽  
J Palamara ◽  
MF Burrow
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
High Viscosity ◽  
Glass Ionomer ◽  
Base Materials ◽  
Resin Modified Glass Ionomer ◽  
Maxillary Premolars ◽  
Materials Used ◽  
Ionomer Cement ◽  
Adhesive Materials

SUMMARY Objectives: This study investigated cuspal deformation in teeth restored with different types of adhesive materials with and without a base. Methods: Mesio-occluso-distal slot cavities of moderately large dimension were prepared on extracted maxillary premolars (n=24). Teeth were assigned to one of four groups and restored with either a sonic-activated bulk-fill resin composite (RC) (SonicFill), or a conventional nanohybrid RC (Herculite Ultra). The base materials used were a flowable nanofilled RC (Premise Flowable) and a high-viscosity resin-modified glass-ionomer cement (RMGIC) (Riva Light-Cure HV). Cuspal deflection was measured with two direct current differential transformers, each contacting a buccal and palatal cusp. Cuspal movements were recorded during and after restoration placement. Data for the buccal and palatal cusp deflections were combined to give the net cuspal deflection. Results: Data varied widely. All teeth experienced net inward cuspal movement. No statistically significant differences in cuspal deflection were found among the four test groups. Conclusions: The use of a flowable RC or an RMGIC in closed-laminate restorations produced the same degree of cuspal movement as restorations filled with only a conventional nanohybrid or bulk-fill RC.

scholarly journals Cuspal Deflection in Premolar Teeth Restored Using Current Composite Resins With and Without Resin-modified Glass Ionomer Liner

2013 ◽  
Vol 38 (3) ◽  
pp. 282-289 ◽  
Author(s):  
E Karaman ◽  
G Ozgunaltay
Keyword(s):  
Composite Resin ◽  
Glass Ionomer Cement ◽  
Composite Resins ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Different Types ◽  
Before And After ◽  
Composite Resin Restorations ◽  
Ionomer Cement

SUMMARY Aim: To evaluate the effects of four different types of composite resins and a resin modified glass ionomer cement (RMGIC) liner on the cuspal deflection of large MOD cavities in vitro. Materials & Methods: One hundred twenty-eight extracted human upper premolar teeth were used. After the teeth were divided into eight groups (n=16), standardized large MOD cavities were prepared. The distance between cusp tips was measured before and after the cavity preparations with a digital micrometer. Then the teeth were restored with different resin composites (Filtek Supreme XT, Filtek P60, Filtek Z250, Filtek Silorane - 3M ESPE, St Paul, MN, USA) with and without a RMGIC liner (Vitrebond, 3M ESPE, St Paul, MN, USA). Cuspal deflection was measured 5 min, 24 h, and 48 h after the completion of restorations. The data were statistically analyzed with Friedman and Kruskal Wallis tests. Results: A significant reduction in cuspal deflection was observed in Filtek Silorane restorations with and without RMGIC liner (p<0.05). In all restored teeth, the distance between cusps was reduced but they did not return to their original positions during the 48 h period. All teeth showed cuspal deflection, but placement of RMGIC liner reduced it. Conclusion: The use of silorane-based composites and the placement of RMGIC liner under the composite resin restorations resulted in significantly reduced cuspal deflection.

scholarly journals Lithium Disilicate Ceramic Endocrown Biomechanical Response According to Different Pulp Chamber Extension Angles and Filling Materials

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1307
Author(s):  
João Paulo Mendes Tribst ◽  
Roberto Lo Giudice ◽  
Alison Flavio Campos dos Santos ◽  
Alexandre Luiz Souto Borges ◽  
Laís Regiane Silva-Concílio ◽  
...  
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Filling Material ◽  
Glass Ionomer ◽  
Pulp Chamber ◽  
Cement Layer ◽  
Filling Materials ◽  
Biomechanical Response ◽  
Root Canal System ◽  
Ionomer Cement

The purpose of this study is to evaluate the effect of pulp chamber extension angles and filling material mechanical properties on the biomechanical response of a ceramic endocrown. A 3D model of maxillary molar that underwent endodontically treatment was exported to computer aided design software to conduct finite element analysis (FEA). The endocrown model was modified considering different pulp chamber extension angles (right angle; 6°, 12° and 18° of axial divergence). The solids were imported into the computer aided engineering software in Standard for the Exchange of Product Data (STEP) format. Nine different filling materials were simulated to seal the orifice of the root canal system under each endocrown restoration (resin composite, bulk-fill resin composite, alkasite, flowable resin composite, glass ionomer cement, autocured resin-reinforced glass ionomer cement, resin cement, bulk-fill flowable resin composite, zinc oxide cement), totaling 36 models. An axial load (300 N) was applied at the occlusal surface. Results were determined by colorimetric graphs of von-Misses stress (VMS) and Maximum Principal Stress (MPS) on tooth, cement layer, and endocrown restorations. VMS distribution showed a similar pattern between the models, with more stress at the load region for the right-angled endocrowns. The MPS showed that the endocrown intaglio surface and cement layer showed different mechanical responses with different filing materials and pulp chamber angles. The stress peaks plotted in the dispersion plot showed that the filling material stiffness is proportional to the stress magnitude in the endocrown, cement layer and tooth adhesive surface. In addition, the higher the pulp chamber preparation angle, the higher the stress peak in the restoration and tooth, and the lower the stress in the cement layer. Therefore, 6° and 12° pulp chamber angles showed more promising balance between the stresses of the adhesive interface structures. Under the conditions of this study, rigid filling materials were avoided to seal the orifice of root canal system when an endocrown restoration was planned as rehabilitation. In addition, the pulp chamber axial walls were prepared between 6° and 12° of divergence to balance the stress magnitude in the adhesive interface for this treatment modality.

scholarly journals Marginal adaptation in proximal cavities restored with composites and other materials

2017 ◽  
Vol 20 (4) ◽  
pp. 63 ◽  
Author(s):  
Raphaela Farias Rodrigues ◽  
Suellen Scarcelli Senna ◽  
Ana Flávia Soares ◽  
Rafael Lia Mondelli ◽  
Paulo Silveira Francisconi ◽  
...  
Keyword(s):  
Composite Resin ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Composite Resins ◽  
Marginal Adaptation ◽  
Glass Ionomer ◽  
Marginal Gap ◽  
Significant Difference ◽  
Molar Teeth ◽  
Composite Flow

<p><strong>Objective</strong>: To evaluate the marginal adaptation, in enamel (E) and dentin (D), of composite resin (CR) associated with flowable resin composite (flow), bulk fill flowable base (bulk) and resin modified glass ionomer cement (RMGIC) in slot cavities. <strong>Material and Methods</strong>: The study was conducted after approval (Protocol No. 21148413.4.0000.5417) from Ethics Committee. Forty extracted human molar teeth were randomly assigned in eight experimental groups: E-CR, E-BULK, E-FLOW, E-RMGIC, D-CR, D-BULK, D-FLOW, D-RMGIC. The occlusal surface was planned, two slot cavities with standard sizes (depth: 2.0 mm, height: 2.5 mm, width: 2.0 mm) were created on a machine for making cavities. The teeth were restored and after 24h subjected to 2000 cyclic loading and sectioned for analysis of marginal adaptation by scanning electron microscopy (SEM). The micrographs were analyzed with the Image J program to measure the size of marginal gaps. The data were transformed into percentages (%GAPS = LG ÷ LM  × 100) and analyzed by 2-way ANOVA followed by the post hoc Tukey test (α=0.05). <strong>Results</strong>: There was a significant difference between different treatments (<em>p&lt;0.01</em>). The groups E-RMGIC (<em>p=0.001</em>) and D-RMGIC (<em>p=0</em>) had the highest percentage of marginal gap. Others groups showed similar percentage of marginal gap <em>(p&gt;0.05)</em>. <strong>Conclusions</strong>: It was concluded that restorations with flowable composite resin and bulk fill liners exhibit the same behavior, but the RMGIC liner increased marginal gap.</p><p><strong>Keywords: </strong>Composite resins; Dental marginal adaptation; Glass ionomer cements.</p>

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