Contact wear of artificial denture teeth

Preis, Verena; Hahnel, Sebastian; Behr, Michaël; Rosentritt, Martin

doi:10.1016/j.jpor.2017.11.001

Cited by 27 publications

(35 citation statements)

References 24 publications

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“…Indeed, the SEM images of this study showed that surfaces treated with RI and US had a more irregular appearance than the untreated surfaces or the surfaces scaled with HI instruments. Although the Rz roughness was paradoxically higher after instrumentation with HI, this roughness determined the sum of the values of the greatest distance between the top and the valley of a surface; parameters such as the wear of the treated surface strongly impact this value 23 , which may indicate that there is a greater removal of dentin tissue after instrumentation with HI compared to the use of US and IR, a fact already shown in previous studies 24,25 .…”

Section: Discussionmentioning

confidence: 59%

The effect of a 3% hydroxyapatite paste prophylaxis after different root-scaling procedures in periodontics

González-Osuna

Oliveira

Teixeira

et al. 2019

Rev. odontol. UNESP

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Introduction Root-scaling procedures on the root surface show to increase root surface roughness during instrumentation. The use of a prophylactic paste reduces the roughness. Objetive This study evaluated the influence of prophylaxis paste on the surface roughness of root dentin after hand instruments (HI), ultrasonic scalers (US) and rotational instruments (RI) were applied to root surfaces. Material and method Fifty bovine roots were prepared and randomly divided into 10 groups (n=5) in which instrumentation with HI, US, or RI was carried out with or without prophylaxis using either conventional or 3% hydroxyapatite paste; additionally, a control group without treatment was included. The Ra and Rz roughness values were measured using a perfilometer. The morphological aspects of the root surfaces were analysed qualitatively by scanning electron microscopy (SEM). Data were analysed using two-way ANOVA followed by Tukey’s test (α = 0.05). Result The scaling method and the prophylaxis procedure significantly influenced (p < 0.05) root surface roughness. Treatment with US and prophylaxis with 3% hydroxyapatite paste resulted in lower values of Ra (0.14 μm ± 0.02 μm) and Rz (0.89 μm ± 0.18 μm) compared to the other groups. SEM analysis showed smoother and more homogeneous surfaces in the groups with prophylaxis compared to the groups without prophylaxis. There were no substantial differences between the results of applying different pastes. Conclusion The prophylaxis procedure performed with the experimental paste containing 3% hydroxyapatite reduced the roughness of root surfaces treated with HI, US and RI at the same level as the conventional prophylactic paste.

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Section: Discussionmentioning

confidence: 59%

The effect of a 3% hydroxyapatite paste prophylaxis after different root-scaling procedures in periodontics

González-Osuna

Oliveira

Teixeira

et al. 2019

Rev. odontol. UNESP

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“…Moreover, when the results of various studies were examined, the number of cycles varied. Studies evaluated anywhere from 5,000, 10,000, 25,000, 50,000, 100,000, and up to 120,000 cycles (10,(30)(31)(32). In the wear device used in the current study, the samples were continuously in contact with the antagonist with occlusal and lateral forces.…”

Section: Discussionmentioning

confidence: 99%

Wear resistance and microhardness of various interim fixed prosthesis materials

Dayan

Kiseri²,

Gençel

et al. 2019

J Oral Sci

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The aim of the present study is to evaluate the wear resistance and microhardness of various interim fixed prosthesis materials with different chemical compositions and curing methods. One heat-cured and four self-cured acrylic resins, and three self-cured, one light-cured, and one dual-cured composite-based materials were tested. For microhardness, samples from each group were tested after storing either at 37°C in artificial saliva for 7 days, followed by thermocycling, or in distilled water solution at 37°C for 24 h. For the evaluation of wear, the remaining samples were evaluated using a 3D scanner and a surface analysis program before loading in the chewing simulator and after every 10,000 cycles. There was a significant difference in wear behavior among the materials tested at both 10,000 and 20,000 cycles (P < 0.001). Microhardness and wear resistance were significantly different between acrylic and composite materials.

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“…T o fabricate removable complete and partial dentures, artificial teeth with superior surface properties are often necessary for prosthodontics rehabilitation. Wear resistance of artificial teeth's material is recommended to maintain the correctly established occlusal vertical dimension and enhance chewing efficiency [1,2]. There are two types of artificial teeth, acrylic and porcelain teeth.…”

Section: Introductionmentioning

confidence: 99%

“…It was reported that the vertical wear of denture teeth was patient-specific between 0.2 to 1.0 mm in two years. Therefore, teeth with insufficient wear resistance resulted in the loss of vertical dimension, reduced masticatory efficiency, craniofacial disorder, increase patients' discomfort and esthetic impairment leading to limitation of acrylic teeth [2]. To improve the efficiency of acrylic teeth with acceptable wear resistance, many trials had been carried out to improve the wear resistance of acrylic teeth; using of metal occlusal surfaces, amalgam stops, or gold occlusal surfaces in resin posterior teeth, or using of composite occlusal surfaces, while other suggested modification of acrylic resin teeth with crosslinking agents [6,7].…”

Section: Introductionmentioning

confidence: 99%

Effect of SiO2 and Al2O3 nanoparticles on wear resistance of PMMA acrylic denture teeth

Helal

Yang

Saad

et al. 2020

BDS

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Objective: This study aimed to evaluate the wear resistance of acrylic denture teeth containing silicon dioxide (nano-SiO2) and aluminum dioxide (nano-Al2O3) nanoparticles. Material and Methods: Poly methyl methacrylate (PMMA) denture tooth material was used to denture tooth material was used to fabricate 84 specimens (n=10) containing nano-SiO2 and nano-Al2O3 in concentrations 0.1wt%, 0.3wt%, and 0.5wt% of acrylic powder. A two-body wear testing machine and digital microscope were used to measure the changes in weight loss and surface roughness respectively. One-way ANOVA and pair-wise Tukey’s post-hoc tests were used for data analysis (α = 0.05). Results: Nano-SiO2 modified teeth material demonstrated a significant increase in weight loss in comparison conventional artificial acrylic teeth material (p ˂ 0.05) while nano- Al2O3 modified teeth material demonstrated non-significant increase in weight loss except for 0.5% subgroup (p ˂ 0.05). There is no significant differences regarding roughness change after wear simulation among all tested groups (p > 0.05). Conclusion: Nano-Al2O3 nanoparticles exhibit less negative effect than nano-SiO2 so; it could be used with caution if necessary.KeywordsAcrylic denture teeth; Al2O3 nanoparticles; SiO2 nanoparticles; wear resistance; surface roughness.

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Contact wear of artificial denture teeth

Cited by 27 publications

References 24 publications

The effect of a 3% hydroxyapatite paste prophylaxis after different root-scaling procedures in periodontics

The effect of a 3% hydroxyapatite paste prophylaxis after different root-scaling procedures in periodontics

Wear resistance and microhardness of various interim fixed prosthesis materials

Effect of SiO2 and Al2O3 nanoparticles on wear resistance of PMMA acrylic denture teeth

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