scholarly journals Clinical Outcomes and Predictors of Satisfaction in Patients with Improved Lithium Disilicate All-Ceramic Crowns

2018 ◽  
Vol 27 (5) ◽  
pp. 498-498
Author(s):  
Mehran Shams-Beyranvand ◽  
Yousef Moradi ◽  
Mehdi Varmaghani
Keyword(s):  
Clinical Outcomes ◽  
Lithium Disilicate ◽  
All Ceramic ◽  
Ceramic Crowns

scholarly journals Clinical Outcomes and Predictors of Satisfaction in Patients with Improved Lithium Disilicate All-Ceramic Crowns

2017 ◽  
Vol 26 (5) ◽  
pp. 470-479 ◽  
Author(s):  
Mazin Saleh Samer ◽  
Qahtani Faraz ◽  
Sami Abdo Radman Al-Dubai ◽  
Fahim Vohra ◽  
Hadijah Abdullah ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Lithium Disilicate ◽  
All Ceramic ◽  
Ceramic Crowns

Premolar Axial Wall Height Effect on CAD/CAM Crown Retention

2016 ◽  
Vol 41 (6) ◽  
pp. 666-671 ◽  
Author(s):  
C Gillette ◽  
R Buck ◽  
N DuVall ◽  
S Cushen ◽  
M Wajdowicz ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Lithium Disilicate ◽  
Resin Cement ◽  
Failure Resistance ◽  
All Ceramic ◽  
Computer Aided ◽  
Cad Cam ◽  
Ceramic Crowns ◽  
Aided Design ◽  
Post Hoc

SUMMARY Objective: To evaluate the significance of reduced axial wall height on retention of adhesively luted, all-ceramic, lithium disilicate premolar computer-aided design/computer-aided manufacturing (CAD/CAM) crowns based on preparations with a near ideal total occlusal convergence of 10°. Methods: Forty-eight recently extracted premolars were randomly divided into four groups (n=12). Each group received all-ceramic CAD/CAM crown preparations featuring axial wall heights of 0, 1, 2, and 3 mm, respectively, all with a 10° total occlusal convergence. Scanned preparations were fitted with lithium disilicate all-ceramic crowns that were luted with a self-etching resin cement. Specimens were tested to failure at a 45° angle to the tooth long axis with failure load converted to megapascals (MPa) based on the measured bonding surface area. Mean data were analyzed using analysis of variance/Tukey's post hoc test (α=0.05). Results: Lithium disilicate crowns adhesively luted on preparations with 0 axial wall height demonstrated significantly less failure resistance compared with the crowns luted on preparations with axial wall heights of 1 to 3 mm. There was no failure stress difference between preparations with 1 to 3 mm axial wall height. Conclusions: Under conditions of this study, adhesively luted lithium disilicate bicuspid crowns with a total occlusal convergence of 10° demonstrated similar failure resistance independent of axial wall height of 1 to 3 mm. This study provides some evidence that adhesion combined with an ideal total occlusal convergence may compensate for reduced axial wall height.

scholarly journals Fracture Resistance of CAD/CAM Lithium Disilicate of Endodontically Treated Mandibular Damaged Molars Based on Different Preparation Designs

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Carolina Clausson ◽  
Cristiano Clausson Schroeder ◽  
Paulo Vicenti Goloni ◽  
Flavio Artur Rego Farias ◽  
Leandro Passos ◽  
...  
Keyword(s):  
Fracture Mode ◽  
Fracture Resistance ◽  
Lithium Disilicate ◽  
Fracture Pattern ◽  
Pulp Chamber ◽  
Complete Filling ◽  
Crown Root ◽  
All Ceramic ◽  
Cad Cam ◽  
Ceramic Crowns

The aim of this study was to evaluate the fracture resistance of 2 different types of all-ceramic crown using immediate dentin sealing (IDS), obtained using a CAD/CAM system on molars with different preparations. Forty extracted lower molars were endodontically treated and divided into four groups (n = 10) according to the dental preparation. Group 1 (SP0) was prepared without filling the pulp chamber and crown-root junction was located at the cementoenamel junction (CEJ). Group 2 (SP1) was prepared without filling the pulp chamber and crown-root junction was located 1-mm above the CEJ. Groups 3 and 4 contained a flat preparation surface with no axial wall height. Group 3 (CP0) was made IDS with complete filling of the pulp chamber with composite resin and crown-root junction was located at the CEJ. Group 4 (CP1) was prepared with complete filling of the pulp chamber and crown-root junction was located 1-mm above the CEJ. All groups were restored with CAD/CAM lithium disilicate ceramic crowns. Specimens were subjected to the fracture test and statistically analyzed using analysis of variance (ANOVA). Fracture mode was determined using a stereoscopic microscope, classified as repairable or nonrepairable, and analyzed using Fischer’s exact test. Results indicated that there were no significant differences between the groups in terms of fracture resistance or fracture pattern (p >0.05). Fracture resistance was the lowest in the SP0 group, followed by the SP1 group (1634.38 N) of CP0 (1821.50 N), and it was the highest in the CP1 group. There was a predominance of nonrepairable fractures and there were no significant differences in the fracture resistance and fracture mode of CAD/CAM lithium disilicate molar all-ceramic crowns. Endodontically treated molars teeth might be restored with endocrowns or all-ceramic crowns on flat preparation; however tooth fracture failures that affect reliability of these types of restorations should be considered.

Influence of Different Cements on the Color Outcomes of Titanium-Based Lithium Disilicate All-Ceramic Crowns and Peri-implant Soft Tissue

2020 ◽  
Vol 33 (1) ◽  
pp. 63-73
Author(s):  
Liu Xinran ◽  
Vincent Fehmer ◽  
Irena Sailer ◽  
Philippe Mojon ◽  
Feng Liu ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Lithium Disilicate ◽  
All Ceramic ◽  
Ceramic Crowns

scholarly journals Microleakage of Lithium Disilicate Crown Margins Finished on Direct Restorative Materials

2016 ◽  
Vol 41 (5) ◽  
pp. 552-562 ◽  
Author(s):  
M Metz ◽  
M Durski ◽  
J Chou ◽  
G Crim ◽  
B Harris ◽  
...  
Keyword(s):  
Resin Composite ◽  
Lithium Disilicate ◽  
Positive Control ◽  
Class Iii ◽  
Class V ◽  
Treatment Groups ◽  
Dye Penetration ◽  
All Ceramic ◽  
Restorative Materials ◽  
Ceramic Crowns

SUMMARY Objective: For some esthetic clinical situations, it is necessary to finish crown margins on direct restorative materials to preserve tissue integrity, bonding integrity, and biological width. The purpose of this research was to investigate microleakage at the interface between bonded lithium disilicate crowns and various direct restorative materials in a class III and class V position. Methods and Materials: Class III or class V restorations were prepared on one side of extracted incisors with either Tetric EvoCeram, Tetric Evoceram Bulk, Fuji II LC, or Tetric Evoflow. The teeth were prepared for and received a lithium disilicate crown. After load fatiguing, the specimens were thermo-cycled with a fuchsin dye and sectioned. The depth and area of dye penetration were measured with a dimensional grid in micrometers using stereomicroscopy and reported as mean dye depth and area (μm) ± SD. The comparison of multiple categorical independent variables with ratio scale dependent variables was evaluated with an analysis of variance and Tukey's post hoc analysis. Results: A statistically significant higher dye penetration was noted for all treatment groups compared with the positive control (side opposite the restoration after sagittal sectioning was used as positive control) regardless of material or placement area (p<0.05). In comparing treatment groups, the Tetric EvoFlow experienced a statistically higher dye penetration than did the other treatment groups regardless of material or placement area (p<0.05). There was no statistically significant difference between the Tetric EvoCeram, Tetric Evoceram Bulk, and Fuji II LC materials regardless of placement area (p>0.05). Conclusions: Within the limitations of this study, it can be concluded that flowable composite materials as finish lines that interact with resin cements could lead to exacerbated interfacial degradation. Finishing lithium disilicate all-ceramic crowns on flowable resin composite materials in the esthetic zone should be used with caution. If necessary, finishing lithium disilicate all-ceramic crowns on nanofilled resin composite or resin-modified glass ionomer materials seems to provide the least dye penetration depth and area.

Replacement of Congenitally Missing Bilateral Maxillary Canines with Dental Implants: A Rare Case Report and Mini Review

2019 ◽  
Vol 13 (1) ◽  
pp. 371-376
Author(s):  
Abduljabbar Mohammed Alsameai ◽  
Basema Abdullah Khabaz ◽  
Mohammed Abdo Alraawi ◽  
Mohammed M Al Moaleem
Keyword(s):  
Case Report ◽  
Treatment Plan ◽  
Young Female ◽  
Normal Function ◽  
Short Term Result ◽  
Osseointegrated Implants ◽  
All Ceramic ◽  
Rare Case Report ◽  
Ceramic Crowns ◽  
Congenitally Missing

Introduction: Maxillary canines play strategic roles in maintaining the normal function and visibility of teeth. However, rare cases of bilateral permanent congenitally missing maxillary canines were occurring. Replacing these missing canines with dental implant prostheses is an optimal treatment plan for aesthetics and functions. Case Report: In this case report, we described the replacement of bilateral maxillary canines with osseointegrated implants to support all-ceramic prostheses for a young female patient. This treatment avoids the conventional preparation of adjacent teeth as a part of prosthetic reconstructions. In addition to that, all-ceramic crowns are biocompatible with oral cavity structures. Conclusion: The stable short-term result has been achieved with the replacement of the bilateral congenitally missed canines with an implant and cemented all-ceramic crowns, with 3-years cumulative success rate.

Sign in / Sign up

Export Citation Format

Share Document