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Showing 1 to 20 of 24 for “"Composite resin"”.
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The Identification of Composite Resin Restorations within Natural Teeth
Composite resin has become a very widely-used restorative material due to excellent physical and aesthetic properties. Unfortunately this makes visual detection more difficult. Restorations form a unique feature of an individual dentition. Therefore it is important to identify composite in …
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The Wear of Acrylic Resin and Composite Resin Teeth against Polished and Glazed Zirconia
… available denture teeth made of different resins. Material and Method: Eight groups (n=10) of denture teeth and one control group (natural teeth) were selected. Two sets of each group were prepared along with two groups of natural molars as control groups (n=10). Two sets of 90 antagonist …
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Effect of refrigerant spray on orthodontic composite resin-bracket debond strength and associated adhesive remnant index
… spray and crosshead speed on orthodontic composite resin shear debond strength and Adhesive Remnant Index (ARI) after bond failure. Orthodontic brackets were bonded to forty paired extracted mandibular third molars. Pairs were divided into experimental and control groups, with and without …
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The effect of polymerization methods and fiber types on the mechanical behavior of fiber-reinforced composite resin
… poor polymerization between the fibers and the composite resin, which can cause debonding and failure. 64 Purpose: The purpose of this study was to investigate the effects of different polymerization methods as well as fiber types on the mechanical behavior of fiberreinforced composite resin. …
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Aesthetic Result of Ceramic Restorations with Different Cements.
… restorations of various thicknesses cemented to composite resin substrates of different shades with multiple cements. 120 samples of IPS e.max® CAD (HT) (Ivoclar Vivadent, Schaan, Liechtenstein) lithium disilicate ceramic and 120 samples of VitaBlocs® Mark II (VITA Zahnfabrik, Bad Säckingen, …
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Μελέτη στη συγκόλληση διαφόρων σύνθετων ρητινών μεταξύ τους
… FACES THE DILEMMA OF REPLACING OR REPAIRING A COMPOSITE RESIN FILLING. THE PURPOSE OF THIS STUDY WAS TO INVESTIGATE THE BOND STRENGTH, VIA SHEAR FORCES, OF REPAIRED COMPOSITE RESIN. A SMALL PARTICLE, AN HYBRIDE AND TWO MICROFILLED COMPOSITE RESINS WERE USED. CYLINDER SPECIMENS OF THE …
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Alteração da rugosidade superficial de resinas compostas após biodegradação por streptococcus mutans: uma revisão sistemática de literatura
… oral environment , make direct contact with the resin composite restorations thus are likely to cause changes in the surface of these restorations , thereby reducing its longevity .The aim of this research was to conduct a systematic review of studies that evaluated the surface roughness of the …
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Alternative Orthodontic Bonding Protocol Using Self Etching Primer
… (altered SEP 1), SEP applied directly to the composite of pre-coated bracket (altered SEP 2), and Primer Only groups. Brackets were debonded using an Instron universal testing machine (Instron, Canton, MA) in shear mode and the mean shear bond strength values were calculated. In addition, …
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Shear Bond Strengths Of A Two-Step Self-Etch Adhesive And A Three-Step Etch-And-Rinse Adhesive In Artificial Dentin Caries Lesions Of Various Depths: An In Vitro Study
… bonding. However, the performance of current resin adhesives in incompletely excavated caries lesions is unknown. Understanding the limitations of bonding to carious dentin is critical for the restoring clinician. Objective: To compare the shear bond strengths of a two-step self-etch adhesive …
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Συγκριτική μελέτη του βαθμού συγκόλλησης μιας κεραμομεταλλικής κονίας με οδοντικούς ιστούς και σύνθετες ρητίνες
… TO ENAMEL, DENTIN AND AUTOPOLYMERIZED COMPOSITE RESINS INTENSILE TEST. THE MATERIALS THAT WERE USED ARE: (A) KETAC-SILVER (GLASS-CERMET), KETAC-FIL (GLASS-IONOMER) ON EVALUATION OF BOND STRENGTH TO DENTAL TISSUES AND (B) KETAC-SILVER, KETAC-BOND (GLASS IONOMER), SILAR (MICROFILLER, …
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Bonding Properties of Newly Erupted and Mature Human Premolars
… are bonded directly to the etched enamel using composite resin, post-eruptive enamel maturation may affect the bonding process. The purpose of this study was to determine whether there were differences in bond strength between mature and newly erupted teeth when using both conventional and …
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Pins in a Composite : Their Effects on the Strength of the Material
… on the compression and tensile strength of a composite resin was measured. </p> <p>Compression strength was measured in cylindrical samples 8 mm long and 4 mm in diameter, using different size threaded stainless steel pins. The tensile strength was determined by compression along the diameter …
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Colour changes in nano-filled and micro-hybrid composite resins on exposure to spices.
Colour changes in composite resins after immersion in beverages such as coffee, tea, alcohol beverage and carbonated drinks have been reported. Although much work has been done to determine the staining susceptibility of composite resins to various liquid beverages, effects of spices on colour …
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Advanced composites using non-autoclave processes: manufacturing and characterization
… processes to manufacture high performance composites for aerospace applications. In Paper 1, vacuum assisted resin transfer molding (VARTM) process was developed for elevated temperature composites. Use of VARTM process for fabricating high temperature resins presents unique challenges such …
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Influence of a 3-step disinfection procedure on dentin bond strength
… in the bond strength between dentin and composite resin with a 3-step disinfection technique compared to a conventional bonding technique without the additional disinfection protocol.Material and Methods. Sixty human molar teeth were sectioned parallel to the occlusal surface to expose …
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Clear aligner attachment removal techniques – an in vitro comparison of removal time residual composite, enamel surface characteristics, enamel loss, and material cost
… to brackets, CAT utilizes tooth-colored composite resin attachments on the facial surfaces of the patient’s teeth to aid in robust tooth movements.6 Differing from traditional metal bracket adhesive, CA attachment removal can be more challenging and time consuming, as the attachments …
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Effects of Alpha-Tocopherol Antioxidant on the Bonding Properties of Resin Adhesive to Dentin Bleached with Sodium Perborate
… then all groups were restored with restorative composite. After 24 hour storage at 37oC and 100% humidity, restored tooth specimens were sectioned into 1 mm2 dentin-composite beams. Four to six beams from each tooth were subjected to microtensile bond strength testing. Following microtensile …
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Influence of a bleaching agent on stained direct composite resins
… the phenomenal strides in research of dental resin composites regarding their physical and mechanical properties, discolouration, either intrinsic or extrinsic still remains a major drawback and is one of the main reasons for the replacement of these restorations. Toothbrushing and polishing …
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The effect of filler on the mechanical properties of a novel resin-based calcium phosphate cement
Several studies have found that resin-based amorphous calcium phosphate (ACP) composites can function well for applications that do not require high mechanical demand. Milled tricalcium phosphate (TCP), a new calcium-phosphate-releasing material, is crystalline in nature, suggesting it to be …
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A study of structure-property relationships in certain polymeric dental materials
Acrylic resin artificial teeth may be produced by Transfer or Pseudo compression moulding. Both of these moulding techniques were investigated to formulate the best conditions for use in a mass production environment and evaluated on a commercial basis. It was found that the transfer technique, …
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