&lt;p&gt;Assessing Tensile Bond Strength Between Denture Teeth and Nano-Zirconia Impregnated PMMA Denture Base&lt;/p&gt;

Zidan, Saleh; Silikas, Nick; Haider, Julfikar; Alhotan, Abdulaziz; Jahantigh, Javad; Yates, Julian

doi:10.2147/ijn.s273541

Cited by 10 publications

(6 citation statements)

References 39 publications

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“…In the current study, the majority of specimens demonstrated cohesive modes of failure, whereas a relatively smaller number of specimens exhibited mixed or adhesive failures. These findings are in concordance with the results presented by another study [9,38].…”

Section: Discussionsupporting

confidence: 93%

“…The most common reasons for detachment and debonding are the smaller ridge-lap surface area obtained for bonding; the course of stresses stumbled upon during function; incompatible surface conditions or the presence of impurities or residual wax at the interface between the teeth and the denture base; presence of deficient monomers during polymerization; and futile or wretched curing methods [9].…”

Section: Introductionmentioning

confidence: 99%

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Comparative Evaluation of Compressive Bond Strength between Acrylic Denture Base and Teeth with Various Combinations of Mechanical and Chemical Treatments

et al. 2021

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Debonding and detachment of artificial teeth from the denture base is frequently encountered in prosthodontic practice. This study aims to assess the effect of modifications in the ridge-lap surface of denture teeth with various combinations of mechanical and chemical surface treatments with hydrofluoric acid on bond strength with the acrylic denture base resin and to identify the failure modes (adhesive, cohesive, or mixed). Seventy acrylic resin teeth samples were randomly divided into seven groups (n = 10): a control group (unmodified) and six treatment groups, in which various combinations of mechanical and chemical surface treatments were performed. Then, these teeth were attached to a heat-cured denture base resin block at 45° angulation. The acrylized test samples were thermocycled, and the compressive bond strength was evaluated using a universal mechanical testing machine. The results suggest that roughening with diamond burs yields the highest bond strength, whereas etching/grooving and air abrasion result in the lowest bond strength. Acid etching complemented air abrasion to improve bond strength, while negative effects were noted with acid etching in other groups. Furthermore, roughening at the neck portion of the acrylic teeth can be used by the manufacturing companies as a standard to provide higher bond strength while maintaining the esthetics of the anterior teeth.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of Compressive Bond Strength between Acrylic Denture Base and Teeth with Various Combinations of Mechanical and Chemical Treatments

et al. 2021

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“…Cardash et al 1990 [52] observed that high impact heat cured denture base resin offered a higher bond strength than conventional resin. Zidan et al 2020 [59] observed that effect of surface conditioning with monomers on ridge lap surface of acrylic teeth and concluded that there is an improvement in shear bond strength. Laser surface treatment improved the bond strength with limited success over the chemical or mechanical techniques [5] .…”

Section: Discussionmentioning

confidence: 99%

Effect of disinfection on shear bond strength between heat activated acrylic resin denture base and commercially available denture teeth: An in vitro study

Nazar¹,

Nair²,

K³

et al. 2022

Int. J. Appl. Dent. Sci.

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Background and Objectives: Acrylic resin had a long history of been used in the fabrication of denture fabrication since they exhibit a better chemical bond between teeth and denture base. With increasing use of dentures, detachment of teeth from dentures also increased proportionally. Denture disinfection is an essential procedure for maintaining good hygiene of the denture. The aim of the study is to evaluate the effect of disinfection on shear bond strength between denture teeth and heat activated denture base. Objectives 1. To evaluate the shear bond strength between heat activated acrylic resin denture base and denture teeth measured using a universal testing machine (Instron) expressed in MPa. 2. To analyse the bonding failure between the denture tooth and heat activated acrylic resin interface using a stereomicroscope at 25 X magnification. Methodology: Two commercial brands of denture teeth (Acryrock and Ivostar) and heat activated acrylic resin denture base were tested. There were 12 subgroups in the study. Each brand of denture teeth was divided into six subgroups comprising of five experimental subgroups and one control group. In subgroup A1B1 and A2B2 (chemical disinfection) the specimens were immersed in 4% of chlorhexidine and sodium perborate monohydrate solution for 15 minutes daily for 19 days respectively, Subgroup A3B3 specimens (mechanical disinfection) were subjected to mechanical disinfection for 14 hours and in Subgroup A4B4 and A5B5 specimens were subjected to mechanical disinfection for 14 hours followed by disinfection with 4% chlorhexidine solution and sodium perborate monohydrate solution for 15 minutes daily for 19 days respectively. In Control group A6B6 specimens were immersed in distilled water at 37degree Celsius for 19 days. Shear bond strength testing was performed at denture tooth resin interface in a universal testing machine at a cross head speed of 1mm/minute. Bond strength failure rates were quantified and classified as adhesive, cohesive or mixed. Data were analyzed by independent t test and chi-square test. Results: In subgroupA1B1 and subgroupA2B2, (chemical disinfection) the specimens immersed in 4% of chlorhexidine (p=0.615) and sodium perborate monohydrate (p=0.615), for 19 days respectively, subgroup A3B3 (mechanical disinfection) specimens were subjected to mechanical disinfection for 14 hours (p<0.01), subgroup A4B4 and A5B5 (mechanical-chemical disinfection) (p<0.01) and (p<0.01) respectively, subgroup A6B6 (control group) (p=0.054). For bond failure analysis where p value for subgroup A1B1 is 0.856, p value for subgroup A2B2 is 1.000, P value for subgroup A3B3 is 1.000, p value for subgroup A4B4 is 0.670, p value for subgroup A5B5 is 0.670, p values for subgroup A6B6 0.856. Disinfection with 4% chlorhexidine solution exhibited mixed pattern of bond failure while sodium perborate monohydrate solution demonstrated both mixed and adhesive type of bond failure. Mechanical disinfection and Combination of mechanical and chemical disinfection exhibited adhesive type of ...

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“…This may be due to that the higher amount of the residual monomers in the 3D printed samples compared to the conventional heat-polymerized samples (6,15) . Where, the residual monomers able to penetrate from the denture base resin into the resin tooth matrix which resulted in proper bonding between the sample and the acrylic tooth, and hence, the increased amount of the residual monomer could increase bond strength (6,29) .…”

Section: Discussionmentioning

confidence: 99%

Assessment of Hardness, Flexural Modulus, and Bond Strength of Acrylic Denture bases Fabricated by 3D Digital Methods

Fawzy

Abdelrahim

Hameed

2021

Egyptian Dental Journal

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Objectives:The inferior mechanical properties and the clinical failure of the denture bases could be related to their processing technique and the type of resin used during fabrication.Therefore, this study aimed to evaluate and compare the effect of the processing technique on the hardness, flexural modulus, and bond strength of the different denture base resins. Materials and Methods:Three processing techniques were used in the present study to fabricate the tested samples; compression-molded fabrication method "control group", and two different three-dimensional (3D) fabrication methods (CAD/CAM milled "subtractive", and 3D printed "additive"). The samples used in this study fabricated with different dimensions according to the type of test (hardness, flexural modulus, and shear bond strength). Results:The results of hardness and flexural modulus revealed that; the CAD/CAM milled samples showed statistically significant higher hardness and flexural modulus values followed by the conventional compression molded and 3D printed respectively. While the results of shear bond strength showed no statistically significant difference among the three different processing methods. Conclusion:the processing technology has a significant effect on the hardness and flexural modulus of the material. While there is no effect to the fabrication technique on the teeth bond strength.

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<p>Assessing Tensile Bond Strength Between Denture Teeth and Nano-Zirconia Impregnated PMMA Denture Base</p>

Cited by 10 publications

References 39 publications

Comparative Evaluation of Compressive Bond Strength between Acrylic Denture Base and Teeth with Various Combinations of Mechanical and Chemical Treatments

Comparative Evaluation of Compressive Bond Strength between Acrylic Denture Base and Teeth with Various Combinations of Mechanical and Chemical Treatments

Effect of disinfection on shear bond strength between heat activated acrylic resin denture base and commercially available denture teeth: An in vitro study

Assessment of Hardness, Flexural Modulus, and Bond Strength of Acrylic Denture bases Fabricated by 3D Digital Methods

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