| Title |
Survival Rate of Metal-Ceramic Crowns as Opposed to a Zirconia-Ceramic Crown |
| Clinical Question |
For a patient seeking a crown, would a zirconia-ceramic based crown or a metal-ceramic based crown have a higher survival rate? |
| Clinical Bottom Line |
Although there is no statistical difference in survival rates between zirconia-ceramic based crowns and metal-ceramic crowns, the zirconia-ceramic crowns are more likely to have minor fractures on the veneering surface than metal-ceramic crowns. |
| Best Evidence |
|
| PubMed ID |
Author / Year |
Patient Group |
Study type
(level of evidence) |
| 22339945 | Vigolo/2012 | 60 patients needing fixed dental prostheses | RCT | | Key results | Of the 60 patients that participated in this study, the survival rate for those that received metal-ceramic crowns was 95%. Those that received a Procera crown had a survival rate of 79% and those that received the Lava crowns had a survival rate of 85%. The study was conducted over a period of 5 years. No statistical difference was observed between a metal-ceramic crown and a zirconia-ceramic crown. However, Procera did show a statistical difference in the frequency of failures when compared to the control group. | |
| Evidence Search |
(zirconia-ceramic[All Fields] AND metal-ceramic[All Fields]) AND Clinical Trial[ptyp] |
Comments on
The Evidence |
This was a double-blinded RCT with more than an 80% completion rate. The groups were treated the same and received adequate follow-up. Recall bias is unlikely with little completing interests. The survival rate was judge based upon coping fracture, veneering fracture, occlusal wear, marginal adaptation, and anatomical form. |
| Applicability |
This study is highly applicable for a patient considering a single-unit FPD. |
| Specialty |
(General Dentistry) (Prosthodontics) |
| Keywords |
Crowns, Zirconia, Metal-Ceramic
|
| ID# |
2469 |
| Date of submission |
03/08/2013 |
| E-mail |
k.patel729@gmail.com; patelk6@livemail.uthscsa.edu |
| Author |
Kuntal Patel |
| Co-author(s) |
|
| Co-author(s) e-mail |
|
| Faculty mentor |
Erica Teixeira, DDS, PhD |
| Faculty mentor e-mail |
teixeirae@uthscsa.edu |
| |
|
Basic Science Rationale
(Mechanisms that may account for and/or explain the clinical question, i.e. is the answer to the clinical question consistent with basic biological, physical and/or behavioral science principles, laws and research?) |
| None available | |
 |
Comments and Evidence-Based Updates on the CAT
(FOR PRACTICING DENTISTS', FACULTY, RESIDENTS and/or STUDENTS COMMENTS ON PUBLISHED CATs) |
| None available | |