Microtensile Bond Strength and Microhardness of Composite Resin Restorations Using a Sonic-Resin Placement System

Grandi, Victor Hugo; Berger, Sandrine Bittencourt; Fugolin, Ana Paula Piovezan; Júnior, Alcides Gonini; Lopes, Murilo Baena; Consani, Símonídes; Guiraldo, Ricardo Danil

doi:10.1590/0103-6440201701469

Cited by 7 publications

(10 citation statements)

References 28 publications

(48 reference statements)

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“…For restoration of teeth, the prepared occlusal surface of each tooth was surrounded with a metal matrix band (Tofflemire Matrix Bands; Produits Dentaires SA, Vevey, Switzerland). The occlusal surface of each tooth was then acid etched for 10 s, washed thoroughly with water and dried gently with air jets before application of bonding system (Solobond M ® ) where both were applied according to manufacturer's instructions [23]. For all teeth RC was packed on the occlusal surface within the metal matrix band up to (7 mm length, 5 mm width, and 4 mm height) using a digital caliper (Mitutoyo, Japan) to ensure sufficient bulk for the µTBS test.…”

Section: Specimen Preparationmentioning

confidence: 99%

“…After mounting in the gripping attachment, each prepared specimen was serially sectioned perpendicular to the bonded interface. Serial sectioning was done in buccolingual direction then in mesiodistal direction using a 0.3-mm thick diamond coated disc (Buehler, USA) under copious coolant [21], [23]. The peripheral beams were executed and only the central beams from each specimen were selected in order to eliminate substrate regional variability [24].…”

Section: Beams Preparationmentioning

confidence: 99%

“…The resultant beams were 0.9±0.1 mm in thickness and 7±1 mm in length. A digital caliper was used to check the thickness and length of all beams [19], [21], [23].…”

Section: Beams Preparationmentioning

confidence: 99%

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Influence of Water Aging on Microtensile Bond Strength of a Flowable and a Packable Bulk-fill Resin Composites to Dentin

Selim¹,

Elezz

Safy

2020

Open Access Maced J Med Sci

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AIM: Investigation of the aging effect on the microtensile bond strength (μTBS) of bulk-fill resin composite (RC) versus a conventionally incrementally applied one. MATERIALS AND METHODS: A total number of 45 sound human impacted third molars extracted molars have been selected to prepare specimens for the μTBS test. Teeth were randomly divided into three groups (C) according to type of RC material which used for restoring the teeth. Where nanohybrid RC (Grandio®SO) was used as the control Group (C1), packable bulk-fill RC (X-tra fil®) was used for restoring teeth in C2 group and flowable bulk-fill RC (X-tra base®) was used for restoring teeth in C3 group. Each group was further subdivided into 3 subgroups (n = 5) according to the water storage time, where in subgroup 1; teeth were stored for 24 h, subgroup 2; teeth were stored for 3 months while for subgroup 3; and teeth were stored for 6 months. After water storage, teeth were sectioned for preparation of μTBS testing beams. Maximum tensile stresses were recorded in megapascal (MPa). RESULTS: After 24 h of water storage, the X-tra base® showed a higher statistically significant μTBS to dentin (33.82 ± 9.84 MPa) than did the other two types of RCs. After 3 months, the X-tra fil® showed the lowest mean value of μTBS (10.90 ± 5.66 MPa), meanwhile, after 6 months of water storage Grandio®SO showed the highest mean value of μTBS (15.85 ± 6.76 MPa). Regardless of the time the X-tra fil® showed the lowest mean of μTBS (15.07 ± 11.73 MPa), while there is no significant difference between the X-tra base® and Grandio®SO. Furthermore, the water aging adversely affects μTBS values which deceased gradually by time. CONCLUSION: The packable bulk-fill RC characterized by lower μTBS to dentin in comparison to the flowable bulk fill and the incrementally applied nanohybrid RCs. Furthermore, the μTBS of the three tested materials decreased gradually by aging.

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Section: Specimen Preparationmentioning

confidence: 99%

Section: Beams Preparationmentioning

confidence: 99%

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Influence of Water Aging on Microtensile Bond Strength of a Flowable and a Packable Bulk-fill Resin Composites to Dentin

Selim¹,

Elezz

Safy

2020

Open Access Maced J Med Sci

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“…The LED (light emitting diode) curing unit output (Radii Cal; SDI, Bayswater, Victoria, VIC, Australia) was measured with a power meter [10] (Ophir Optronics Inc., Danvers, MA, USA) at irradiance 1400 mW/cm 2 . The irradiance was measured when the light-guide end touched the surface of the ceramics during exposure at 1260 mW/cm 2 (IPS e.max CAD/CAM) and 1120 mW/cm 2 (IPS e.max Press).…”

Section: Specimen Preparationmentioning

confidence: 99%

Do lithium disilicate ceramic manufacturing techniques affect the degree of conversion of light-cured resin cement?

et al. 2018

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The aim of this study is to evaluate the degree of conversion of light-cured resin cement subjected to activation through the interposition of lithium disilicate ceramic produced according to two manufacturing techniques. Cylindrical specimens of RelyX ™ Veneer resin cement were generated based on each manufacturing technique (CAD/CAM-computer aided design/computer assisted manufacturing, n = 5 or pressed ceramic technique, n = 5). Next, the specimens were washed in distilled water, dried with absorbent paper and stored in containers filled with distilled water at 37 °C for 24 h. Specimens from each group were subjected to attenuated total reflectance Fourier transform infrared (ATR-FTIR) in order to evaluate their degree of conversion. Data about the degree of conversion (%) were subjected to analysis of variance and to Student's t-test (α = 0.05%). The degree of conversion of RelyX ™ Veneer was statistically higher in the CAD/CAM manufacturing technique (39.83 ± 0.35%) than in the Press one (37.59 ± 0.62%). The light-cured resin cement activated through ceramic structure reinforced with lithium disilicate generated through the CAD/CAM manufacturing technique showed higher degree of conversion than the one generated through the Press manufacturing technique.

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“…Tensile strength of sisal nanofiber dental composite 60% and nanofiller Z350XTAdvances in Health Sciences Research, volume 33 unit, which was then translated to MPa using the following method (1):[15] …”

mentioning

confidence: 99%

Tensile Strength and Microscopic Adhesion Observation of Dental Composite Restorative Material Manufactured From Sisal Nanofiber as Filler

Nugroho¹,

Widjijono²,

Nuryono³

et al. 2021

Advances in Health Sciences Research

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Background: Dental Composite consists of inorganic filler material that does not have chemical adhesion to organic materials. Tooth structure and adhesive materials contained many organic materials. Inorganic fillers could be substituted by organic material. This material was sisal fiber. These fibers were hard and used as mechanical amplifiers to the matrix resin. This study manufactured dental composite with sisal nanofibers as the filler. Objective: This study investigated the microscopic adhesion between dental composite made from sisal nanofibers to tooth structure which was tested by tensile strength. Materials and Methods: Sisal fiber was converted into nano-sized. It was mixed with BisGMA (Sigma Aldrich), UDMA (Sigma Aldrich), TEGDMA (Sigma Aldrich), Champhorquinone (Sigma Aldrich). Composite Z350 XT (3M ESPE) was utilized as control. We used ten cone-shape samples (4 x 4 x 2 mm). They were divided into 2 groups namely sisal nanofibers composite labeled as group A; Z350 XT as group B. Extracted premolar teeth were filled using samples with the total-etch adhesive (3M ESPE). The samples were investigated using a Scanning Electron Microscope (SEM) (JSM-6510LA) and their tensile strength was tested using a Universal Testing Machine (Vertical test ASL-S). The data were processed by Independent Sample T-Test analysis. Results: The mean of the tensile strength of group A was 4.39 MPa, and that of group B was 1.23 MPa. There was a significant difference (p = 0.004; p < 0.05). SEM observation showed that there was no gap between the tooth structure with composite group A. Conclusion: Group A had better adhesion to tooth structure than group B and adequate tensile strength.

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Microtensile Bond Strength and Microhardness of Composite Resin Restorations Using a Sonic-Resin Placement System

Cited by 7 publications

References 28 publications

Influence of Water Aging on Microtensile Bond Strength of a Flowable and a Packable Bulk-fill Resin Composites to Dentin

Influence of Water Aging on Microtensile Bond Strength of a Flowable and a Packable Bulk-fill Resin Composites to Dentin

Do lithium disilicate ceramic manufacturing techniques affect the degree of conversion of light-cured resin cement?

Tensile Strength and Microscopic Adhesion Observation of Dental Composite Restorative Material Manufactured From Sisal Nanofiber as Filler

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