Metal stain on monolithic zirconia restoration: A case report

Cha, Min-Sang; Lee, Sang Woon; Huh, Yoon‐Hyuk; Cho, Lee‐Ra; Park, Chan-Jin

doi:10.4047/jap.2017.9.2.138

Cited by 6 publications

(4 citation statements)

References 19 publications

(21 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the clinical outcomes of monolithic zirconia restorations remain inadequately studied. Therefore, the long‐term prognosis of monolithic zirconia remains unknown .…”

mentioning

confidence: 99%

Effect of finish line design on stress distribution in bilayer and monolithic zirconia crowns: a three‐dimensional finite element analysis study

Miura

Kasahara

Yamauchi

et al. 2018

European J Oral Sciences

View full text Add to dashboard Cite

This study evaluated the influence of different finish line designs and abutment materials on the stress distribution of bilayer and monolithic zirconia crowns using three-dimensional finite element analysis (FEA). Three-dimensional models of two types of zirconia premolars - a yttria-stabilized zirconia framework with veneering ceramic and a monolithic zirconia ceramic - were used in the analysis. Cylindrical models with the finish line design of the crown abutments were prepared with three types of margin curvature radius (CR): CR = 0 (CR0; shoulder margin), CR = 0.5 (CR0.5; rounded shoulder margin), and CR = 1.0 (CR1.0; deep chamfer margin). Two abutment materials (dentin and brass) were analyzed. In the FEA model, 1 N was loaded perpendicular to the occlusal surface at the center of the crown, and linear static analysis was performed. For all crowns, stress was localized to the occlusal loading area as well as to the axial walls of the proximal region. The lowest maximum principal stress values were observed when the dentin abutment with CR0.5 was used under a monolithic zirconia crown. These results suggest that the rounded shoulder margin and deep chamfer margin, in combination with a monolithic zirconia crown, potentially have optimal geometry to minimize occlusal stress.

show abstract

“…However, the clinical outcomes of monolithic zirconia restorations remain inadequately studied. Therefore, the long‐term prognosis of monolithic zirconia remains unknown .…”

mentioning

confidence: 99%

Effect of finish line design on stress distribution in bilayer and monolithic zirconia crowns: a three‐dimensional finite element analysis study

Miura

Kasahara

Yamauchi

et al. 2018

European J Oral Sciences

View full text Add to dashboard Cite

show abstract

“…[36] However 'full contour' zirconia based restorations without a porcelain layer have been shown to be problematic in some cases with wear of the opposing teeth causing gross fracture and ultimate total failure of the prosthesis. [26,37] In a study by Park et al, wear resistance of the 3D printed resin material was compared to the milled and the conventional self-cured resin materials opposing zirconia and metal antagonists (CoCr alloy). [38] The basic component of all the three resin materials was similar but the study found differences in wear patterns between the materials and the casted cobalt-chromium (CoCr) alloy denture abraders.…”

Section: Iv) Peek and Nylonmentioning

confidence: 99%

“…Furthermore, a number of PMMA dental models can be easily fabricated, polished, and repaired using the 3D printers, which not only reduces the production time but also allows multiple 3D copies to be produced without altering the dental anatomy. [36,37,38] However, as the studies above have shown, the flexural strength of PMMA decreases gradually over time, meaning current formulations may be inadequate for use as long term restorations. Studies have reported that the use of PMMA resin materials in dental restoration cause irritation of oral tissues, have low wear resistance, and high volume shrinkage due to leaching of the free monomer.…”

Section: Limitationsmentioning

confidence: 99%

3D Printing Part 2 - A Literature Review Of 3D Printing Materials in Dentistry

Ab¹

2021

Preprint

View full text Add to dashboard Cite

Introduction: The current generation of 3D printers are lighter, cheaper, and smaller, making them more accessible to the chairside digital dentist than ever before. 3D printers in general in the industrial and chairside setting can work with various types of materials including, metals, ceramics, and polymers. Evidence presented in many studies show that an ideal material used for dental restorations is characterised by several properties related to durability, cost-effectiveness, and high performance. This review is the second part in a 3D Printing series that looks at the literature on material science and applications for these materials in 3D printing as well as a discussion on the potential further development and future evolution in 3D printing materials. Conclusions: Current materials in 3D printing provide a wide range of possibilities for providing more predictable workflows as well as improving efficiency through less wasteful additive manufacturing in CAD/CAM procedures. Incorporating a 3D printer and a digital workflow into a dental practice is challenging but the wide range of manufacturing options and materials available mean that the dentist should be well prepared to treat patients with a more predictable and cost effective treatment pathway. As 3D printing continues to become a commonplace addition to chair side dental clinics, the evolution of these materials, in particular reinforced PMMA, resin incorporating zirconia and glass reinforced polymers offer increased speed and improved aesthetics that will likely replace subtractive manufacturing milling machines for most procedures.

show abstract

“…In addition, the possibility of an excessive wear of dental alloys by zirconia was suggested. 22 For these reasons, we conducted an in vitro study 23 on the wear of three dental alloys against 3Y-TZP monolithic zirconia. It was shown that the wear of metal alloy differs according to the alloy type (the antagonist specimen) and the surface roughness of zirconia (the substrate specimen).…”

Section: Introductionmentioning

confidence: 99%

Correlation between microhardness and wear resistance of dental alloys against monolithic zirconia

et al. 2021

Self Cite

View full text Add to dashboard Cite

PURPOSE The aim of this study is to compare the hardness according to the conditions of metal alloys. Moreover, the correlation between the cast crown hardness before and after wear testing and the degree of wear for each dental alloy was assessed. MATERIALS AND METHODS Cast crowns of three metal alloys (Co-Cr, gold, and Ni-Cr alloys) opposing smooth-surface monolithic zirconia were used. The Vickers microhardness of the ingot (which did not undergo wear testing) and the cast crown before and after wear testing were measured for each alloy. Two-way ANOVA and Scheffé tests were used to compare the measured hardness values. Moreover, the Pearson correlation coefficient was used to evaluate the relationship between the surface hardness and the wear of the cast crown (α=.05). RESULTS There was no significant difference in the hardness before and after wear testing for the gold alloy ( P >.05); however, the hardness of the worn surface of the cast crown increased compared to that of the cast crown before the wear tests of Ni-Cr and Co-Cr alloys ( P <.05). Furthermore, there was no correlation between the wear and hardness of the cast crown before and after wear testing for all three metal alloys ( P >.05). CONCLUSION There was a significant difference in hardness between dental alloys under the same conditions. No correlation existed between the surface hardness of the cast crown before and after wear testing and the wear of the cast crown.

show abstract

Metal stain on monolithic zirconia restoration: A case report

Cited by 6 publications

References 19 publications

Effect of finish line design on stress distribution in bilayer and monolithic zirconia crowns: a three‐dimensional finite element analysis study

Effect of finish line design on stress distribution in bilayer and monolithic zirconia crowns: a three‐dimensional finite element analysis study

3D Printing Part 2 - A Literature Review Of 3D Printing Materials in Dentistry

Correlation between microhardness and wear resistance of dental alloys against monolithic zirconia

Contact Info

Product

Resources

About