scholarly journals Effect of the framework material on the final color of all-ceramic restorations

2011 ◽  
Vol 27 ◽  
pp. e83
Author(s):  
Q.N. Sonza ◽  
T.K. Vendruscolo ◽  
M. Borba
Keyword(s):  
All Ceramic ◽  
Ceramic Restorations ◽  
Final Color

The Aesthetic Effect of All-Ceramic Pressed Crowns According to the Thickness and Color of the Materials Used - An In Vitro Study

2013 ◽  
Vol 587 ◽  
pp. 349-355
Author(s):  
Sergiu Drafta ◽  
Adelina Popescu ◽  
Vlad Naicu
Keyword(s):  
Human Eye ◽  
Color Parameters ◽  
Varying Thickness ◽  
Dental Abutment ◽  
All Ceramic ◽  
Materials Used ◽  
The Aesthetic ◽  
Ceramic Restorations ◽  
Final Color

The final color of all-ceramic restorations may be influenced by the varying thickness of the dental abutment. Eighty A2 color (MO and LT) ceramic discs and eighty A3.5 color and four different thicknesses composite discs of were produced. The measurements were performed using the Vita Easyshade spectrophotometer. The results were statistically analyzed. Conclusion: There are no significant differences (perceived by the human eye) of the color parameters in the CIE L*a*b* system when comparing different combinations.

scholarly journals Effect of the framework material on the final color of all-ceramic restorations

2013 ◽  
Vol 1 (3) ◽  
pp. 219
Author(s):  
Márcia Borba ◽  
Queli Nunes Sonza ◽  
Álvaro Della Bona
Keyword(s):  
Tetragonal Zirconia ◽  
Color Difference ◽  
Polycrystalline Alumina ◽  
Mean Values ◽  
Framework Materials ◽  
Significant Difference ◽  
All Ceramic ◽  
Ceramic Restorations ◽  
Study Hypothesis ◽  
Final Color

OBJECTIVES: to evaluate the effect of the type of ceramic framework material on the final color of all-ceramic restorations. The hypotheses tested were: (1) the final color of the restoration is different than the porcelain shade selected initially to veneer the framework and (2) different framework materials result in different colors of all-ceramic restorations. METHODS: Steel models simulating abutment teeth were used to design all-ceramic fixed partial dentures (FPDs). The FPDs were produced using three different framework materials (n=8): (YZ) yttria partially stabilized tetragonal zirconia polycrystal (LAVA, 3M); (IZ) glass-infiltrated alumina/zirconia (Vita In-Ceram Zirconia); (AL) polycrystalline alumina (Vita In-Ceram AL). Each framework was veneered with the recommended porcelain, VM9 for YZ and VM7 for IZ and AL groups (Vita). The porcelain shade used was 2M2. A uniform thickness of 1.2 mm of porcelain was applied around the retainers. The color difference (ΔE) and lightness difference (ΔL) between the selected porcelain shade (2M2) and the color of the final restoration were obtained using a clinical spectrophotometer (VITA Easyshade). Statistical analysis was performed using One-Way ANOVA and Tukey’s test (α=0.05). RESULTS: The ΔE mean values, standard deviation and statistical ranking for the experimental groups were: (YZ) 2.38 ± 0.44b; (IZ) 2.92 ± 0.67ab; (AL) 3.43 ± 0.84a. AL group showed the highest ΔE and ΔL mean values. IZ showed an intermediate ΔE value and statistically similar to AL and YZ groups. There was no significant difference between ΔL values for YZ and IZ groups. CONCLUSION:  Although the color difference between all experimental groups and the porcelain shade selected to veneer the restorations could be visually detected (ΔE>1.0), only AL showed a difference above the clinical threshold (ΔE>3.0). Thus, the first study hypothesis was partially accepted. In addition, the type of framework ceramic influenced the final restoration color, accepting the second study hypothesis.

In vivo fracture resistance of implant-supported all-ceramic restorations

2003 ◽  
Vol 90 (4) ◽  
pp. 325-331 ◽  
Author(s):  
Murat Yildirim ◽  
Horst Fischer ◽  
Rudolf Marx ◽  
Daniel Edelhoff
Keyword(s):  
Fracture Resistance ◽  
All Ceramic ◽  
Ceramic Restorations

scholarly journals Full-mouth rehabilitation of the patient with severe tooth wear using all ceramic restorations

2016 ◽  
Vol 54 (3) ◽  
pp. 306
Author(s):  
Tae Su Kim ◽  
Jae Hyun Lee ◽  
Chul Won Lee ◽  
Won Sup Lee ◽  
Su Young Lee
Keyword(s):  
Tooth Wear ◽  
All Ceramic ◽  
Full Mouth Rehabilitation ◽  
Ceramic Restorations

scholarly journals Bonding of all Ceramic Restorations

Dentistry ◽  
2015 ◽  
Vol 5 (10) ◽  
Author(s):  
Nissaf Daouahi Dalenda Hadyaoui ◽  
Mounir Cherif
Keyword(s):  
All Ceramic ◽  
Ceramic Restorations

scholarly journals Masking Conventional Metallic Cast Post for Enhancing Esthetics

2016 ◽  
Vol 6 (1) ◽  
pp. 85-89 ◽  
Author(s):  
Jyoti B Nadgere ◽  
Naisargi P Shah ◽  
Amit Mahadeo Gaikwad
Keyword(s):  
Case Report ◽  
Metal Core ◽  
Metallic Core ◽  
Tooth Structure ◽  
Custom Made ◽  
All Ceramic ◽  
Post And Core ◽  
Ceramic Restorations ◽  
Labial Surface ◽  
Metal Post

ABSTRACT Loss of tooth structure occurs due to caries, endodontic treatment, or fracture caused by trauma; restoring these teeth is difficult task for a clinician. Post and core is an option for teeth when excessive tooth structure is lost and teeth need to be restored with crown and bridge procedure. They can be prefabricated post with composite built up or a one-piece custom-made post. The custom-made cast metal post and core have disadvantage due to their color that imparts grayish hue to overlying ceramic restorations. Masking the metal core can enhance the esthetic of all ceramic restorations that are placed over the cast post and core. A case report is being presented where the metallic core was masked with ceramic built up on labial surface of metal core. How to cite this article Shah NP, Gaikwad AM, Ram SM, Nadgere JB. Masking Conventional Metallic Cast Post for Enhancing Esthetics. J Contemp Dent 2016;6(1):85-89.

scholarly journals Retreatment of 6 Ceramic Restorations In A Single Session - The Application of Er:YAG Laser And CAD/CAM Technology: An 1 Year Follow Up Clinical Evaluation

2021 ◽  
Vol 24 (2) ◽  
Author(s):  
Christian Giancarlo Bernal ◽  
Ester Mi Ryoung Lee ◽  
Carlos De Paula Eduardo ◽  
Ana Maria Aparecida Souza ◽  
Luciane Hiramatsu Azevedo
Keyword(s):  
High Speed ◽  
Er:Yag Laser ◽  
Single Session ◽  
High Power Lasers ◽  
Yag Laser ◽  
Anesthetic Agents ◽  
All Ceramic ◽  
Cad Cam ◽  
Ceramic Restorations

Background: To present the benefits of high power lasers (Er: YAG and Nd: YAG) over the use of the high speed turbine for the extraction of ceramics restorations, without damaging the surfaces of the teeth; being a relatively easier and faster procedure without the use of anesthetic agents, and the preparation of the ceramic restorations and cementing in the single session; with a follow-up of 1 year. Objective: The benefits of lasers over high-speed turbine mechanical instrumentation for crown removal encompass efficient restoration recovery without damage to tooth surfaces; and a relatively easier and faster procedure without the use of anesthetic agents. Methods: The Er: YAG laser (no contact; 3.2-4.0 W, 20 Hz) was used to extract the porcelain prosthesis, followed by a gingivectomy with the Nd: YAG laser on tooth 12 to improve the gingival contour. The dental surfaces where the ceramic prosthesis will be cemented were scanned. Then, CAD / CAM technology was used to make the ceramic veneers that were cemented in the same session. Results: The efficacy the Er:YAG laser energy was observed by the decreased of the time to remove all-ceramic materials through ablation of bonding cements, reducing working time by 75% compared to a high-speed turbine. Conclusions: An Er: YAG laser can safely remove lithium disilicate crowns with the settings used in this study. Laser-assisted removal of all ceramic PDFs is a promising treatment protocol. The use of the Nd: YAG (2.0 W power, short 20Hz, 320 µm optical fiber, in contact) laser allowed gingivoplasty to be performed, automatically cauterizing avoiding post-operative bleeding, and facilitating the preparation of ceramic restorations the same day. The use of high-power lasers and the use of accompanying CAD / CAM technology allowed this clinical case to be completed in a single visit without the use of temporary restorations, achieving absolute patient satisfaction.   Keywords Er:YAG; Nd:YAG; Lithium disilicate ceramic; CAD/CAM.

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