Influence of the veneering process on the marginal fit of zirconia fixed dental prostheses

2010 ◽  
Vol 37 (4) ◽  
pp. 283-291 ◽  
Author(s):  
P. KOHORST ◽  
H. BRINKMANN ◽  
M. P. DITTMER ◽  
L. BORCHERS ◽  
M. STIESCH
Keyword(s):  
Marginal Fit ◽  
Dental Prostheses ◽  
Fixed Dental Prostheses

Internal and marginal fit of cobalt-chromium fixed dental prostheses fabricated with 3 different techniques

2015 ◽  
Vol 114 (5) ◽  
pp. 686-692 ◽  
Author(s):  
Harald Nesse ◽  
Dina Mari Åkervik Ulstein ◽  
Malene Myhre Vaage ◽  
Marit Øilo
Keyword(s):  
Cobalt Chromium ◽  
Marginal Fit ◽  
Dental Prostheses ◽  
Fixed Dental Prostheses

scholarly journals Reliability of Metal 3D Printing with Respect to the Marginal Fit of Fixed Dental Prostheses: A Systematic Review and Meta-Analysis

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4781
Author(s):  
Soohyun Bae ◽  
Min-Ho Hong ◽  
Hyunwoo Lee ◽  
Cheong-Hee Lee ◽  
Mihee Hong ◽  
...  
Keyword(s):  
Systematic Review ◽  
3D Printing ◽  
Meta Analysis ◽  
Three Dimensional ◽  
Cobalt Chromium ◽  
Marginal Fit ◽  
Dental Prostheses ◽  
Standard Mean Difference ◽  
Fixed Dental Prostheses ◽  
Metal 3D Printing

Three-dimensional (3D) printing technologies have been widely used to manufacture crowns and frameworks for fixed dental prostheses. This systematic review and meta-analysis aimed to assess the reliability of the marginal fit of 3D-printed cobalt-chromium-based fixed dental prostheses in comparison to conventional casting methods. Articles published until 25 June 2020, reporting the marginal fit of fixed prostheses fabricated with metal 3D printing, were searched using electronic literature databases. After the screening and quality assessment, 21 eligible peer-reviewed articles were selected. Meta-analysis revealed that the marginal gap of the prostheses manufactured using 3D printing was significantly smaller compared to that manufactured using casting methods (standard mean difference (95% CI): −0.92 (−1.45, −0.38); Z = −3.37; p = 0.0008). The estimated difference between the single and multi-unit types did not differ significantly (p = 0.3573). In the subgroup analysis for the measurement methods, the tendency of marginal discrepancy between the 3D printing and casting groups was significantly different between articles that used direct observation and those that used the silicone replica technique (p < 0.001). Metal 3D printing technologies appear reliable as an alternative to casting methods in terms of the fit of the fixed dental prostheses. In order to analyze the factors influencing manufacturing and confirm the results of this review, further controlled laboratory and clinical studies are required.

scholarly journals Marginal fit evaluation of 3 unit fixed dental prostheses fabricated by rapid prototyping method

2012 ◽  
Vol 34 (2) ◽  
pp. 105-111 ◽  
Author(s):  
Ki-Baek Kim ◽  
Jae-Hong Kim ◽  
Woong-Chul Kim ◽  
Hae-Young Kim ◽  
Ji-Hwan Kim
Keyword(s):  
Rapid Prototyping ◽  
Marginal Fit ◽  
Dental Prostheses ◽  
Fixed Dental Prostheses

scholarly journals Preliminary Study on the Assessment of the Marginal Fit of Three-Dimensional Methacrylate Oligomer Phosphine Oxide Provisional Fixed Dental Prostheses Made by Digital Light Processing

Prosthesis ◽  
2020 ◽  
Vol 2 (3) ◽  
pp. 240-245 ◽  
Author(s):  
Pedro Molinero-Mourelle ◽  
Miguel Gómez-Polo ◽  
Cristina Gómez-Polo ◽  
Rocio Ortega ◽  
Jaime del Río Highsmith ◽  
...  
Keyword(s):  
3D Printing ◽  
Phosphine Oxide ◽  
Three Dimensional ◽  
Digital Light Processing ◽  
Marginal Fit ◽  
Dental Prostheses ◽  
Polyether Ether Ketone ◽  
Fixed Dental Prostheses ◽  
Preliminary Study ◽  
Spss Software

This article aimed to assess the marginal fit of methacrylate-oligomer-phosphine-oxide curable-resin provisional-fixed dental prostheses made by digital-light-processing (DLP) three-dimensional (3D) printing. A stainless-steel master model with two abutments was scanned, and five three-unit provisional bridges were designed and printed in VITA shade A3.5 curable resin in 50 μm-thick layers. The marginal fit of each abutment was measured at six points using a profile projector. A descriptive data analysis of the fit measurements was performed by descriptive and explorative processes with the SPSS software. The curable-resin provisional restorations made by DLP 3D printing reached values of 46.37 μm (SD: 29.58 μm), which were considered clinically acceptable, with values similar to polyethylene-methacrylate and polyether-ether-ketone provisional restorations.

scholarly journals Comparison of Conventional Methods and Laser-Assisted Rapid Prototyping for Manufacturing Fixed Dental Prostheses: An In Vitro Study

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Giorgio Pompa ◽  
Stefano Di Carlo ◽  
Francesca De Angelis ◽  
Maria Paola Cristalli ◽  
Susanna Annibali
Keyword(s):  
Rapid Prototyping ◽  
Manufacturing Systems ◽  
Tetragonal Zirconia ◽  
Experimental Models ◽  
Laser Fusion ◽  
Marginal Fit ◽  
Dental Prostheses ◽  
Fixed Dental Prostheses ◽  
Group 3

This study assessed whether there are differences in marginal fit between laser-fusion and conventional techniques to produce fixed dental prostheses (FDPs). A master steel die with 2 abutments was produced to receive a posterior 4-unit FDPs and single copings. These experimental models were divided into three groups (n=20/group) manufactured: group 1, Ni-Cr alloy, with a lost-wax casting technique; group 2, Co-Cr alloy, with selective laser melting (SLM); and group 3, yttria-tetragonal zirconia polycrystal (Y-TZP), with a milling system. All specimens were cut along the longitudinal axis and their adaptation was measured at the marginal and shoulder areas on the right and left sides of each abutment. Measurements were made using a stereomicroscope (×60 magnification) and a scanning electron microscope (×800 magnification). The data were analyzed using one-way analysis of variance and the Bonferroni post hoc test, with a significance cutoff of 5%. Significant differences (P<0.05) were observed between group 3 and the other groups. The marginal opening was smallest with Co-Cr alloy substructures, while the shoulder opening was smallest with Ni-Cr alloy substructures. Within the limitations of this study, the marginal fit of an FDP is better with rapid prototyping (RP) via SLM than conventional manufacturing systems.

scholarly journals Inlay-Retained Dental Bridges—A Finite Element Analysis

2021 ◽  
Vol 11 (9) ◽  
pp. 3770
Author(s):  
Monica Tatarciuc ◽  
George Alexandru Maftei ◽  
Anca Vitalariu ◽  
Ionut Luchian ◽  
Ioana Martu ◽  
...  
Keyword(s):  
Finite Element ◽  
Young Patients ◽  
Maximum Pressure ◽  
Class Iii ◽  
Element Analysis ◽  
Dental Prostheses ◽  
Abutment Teeth ◽  
Fixed Dental Prostheses ◽  
Implant Therapy ◽  
The Stability

Inlay-retained dental bridges can be a viable minimally invasive alternative when patients reject the idea of implant therapy or conventional retained full-coverage fixed dental prostheses, which require more tooth preparation. Inlay-retained dental bridges are indicated in patients with good oral hygiene, low susceptibility to caries, and a minimum coronal tooth height of 5 mm. The present study aims to evaluate, through the finite element method (FEM), the stability of these types of dental bridges and the stresses on the supporting teeth, under the action of masticatory forces. The analysis revealed the distribution of the load on the bridge elements and on the retainers, highlighting the areas of maximum pressure. The results of our study demonstrate that the stress determined by the loading force cannot cause damage to the prosthetic device or to abutment teeth. Thus, it can be considered an optimal economical solution for treating class III Kennedy edentation in young patients or as a provisional pre-implant rehabilitation option. However, special attention must be paid to its design, especially in the connection area between the bridge elements, because the connectors and the retainers represent the weakest parts.

Sign in / Sign up

Export Citation Format

Share Document