Technical Accuracy of Dental Laboratories in the Quality and Shade Matching of Porcelain Fused to Metal Crowns: An In Vitro Study
Abstract
:1. Introduction
2. Materials and Methods
2.1. Specimen Preparation
2.2. Quality Evaluation
2.2.1. Marginal Adaptation
2.2.2. Contour
2.2.3. Proximal Contacts
2.3. Shade Evaluation
2.4. Statistical Analysis
3. Results
3.1. Quality
3.1.1. Marginal Adaptation
3.1.2. Crown Contours
3.1.3. Proximal Contacts
3.2. Shade Matching
3.2.1. Visual Assessment
3.2.2. ShadeEye Assessment
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Marginal Adaptation | ||||
---|---|---|---|---|
Quality of Fit Criteria-Based Evaluation. | Government LABs (N and Row %) | Commercial LABs (N and Row %) | Total (N and Column %) | p Value |
Excellent | 0 (0) | 4 (100) | 4 (12.5) | 0.007 |
Acceptable | 10 (45.5) | 12 (54.5) | 22 (68.8) | |
Acceptable with modifications | 4 (100) | 0 (0) | 4 (12.5) | |
Unacceptable | 2 (100) | 0 (0) | 2 (6.20) | |
Crown Contours | ||||
Quality of Contours Criteria-Based Evaluation. | Government LABs (N and Row Percentage) | Commercial LABs (N and Row Percentage) | Total (N and Column %) | p Value |
Excellent | 2 (16.6) | 10 (83.4) | 12 (37.5) | 0.002 |
Acceptable | 2 (33.4) | 4 (66.6) | 6 (18.75) | |
Acceptable with modifications | 8 (80) | 2 (20) | 10 (31.25) | |
Unacceptable | 4 (100) | 0 (0) | 4 (12.5) |
Mesial Proximal Contact | ||||
---|---|---|---|---|
Quality of Contacts Criteria-Based Evaluation | Government LABs (N and Row %) | Commercial LABs (N and Row %) | Total (N and Column %) | p Value |
Excellent | 2 (25) | 6 (75) | 8 (25) | 0.125 |
Acceptable | 2 (100) | 0 (0) | 2 (6.25) | |
Acceptable with modifications | 10 (50) | 10 (50) | 20 (62.5) | |
Unacceptable | 2 (100) | 0 (0) | 2 (6.25) | |
Distal Proximal Contact | ||||
Quality of Contacts Criteria-Based Evaluation | Government LABs (N and Row Percentage) | Commercial LABs (N and Row Percentage) | Total (N and Column %) | p Value |
Excellent | 2 (20) | 8 (80) | 10 (31.3) | 0.106 |
Acceptable | 4 (66.6) | 2 (33.4) | 6 (18.7) | |
Acceptable with modifications | 4 (50) | 4 (50) | 8 (25) | |
Unacceptable | 6 (75) | 2 (25) | 8 (25) |
Visual Shade Matching, Cervical 3rd | ||||
---|---|---|---|---|
Accuracy of Shade, Criteria-Based Evaluation. | Government LABs (N and Row %) | Commercial LABs (N and Row %) | Total (N and Column %) | p Value |
Matching | 8 (40) | 12 (60) | 20(62.5) | 0.273 |
Non-Matching | 8 (66.6) | 4 (33.4) | 12 (37.5) | |
Visual Shade Matching, Middle Third | ||||
Matching | 12 (50) | 12 (50) | 24 (75) | 1.0 |
Non-Matching | 4 (50) | 4 (50) | 8 (25) | |
Visual Shade Matching, Incisal Thid | ||||
Matching | 3 (21.5) | 11 (78.5) | 14 (43.7) | 0.004 |
Non-Matching | 13 (72.3) | 5 (27.7) | 18 (56.3) | |
Overall Visual Shade Matching (All Thirds) | ||||
Complete Matching | 1 (12.5) | 7 (87.5) | 8 (25) | 0.005 |
2/3rd matching | 11 (61.2) | 7 (38.8) | 18 (56.25) | |
1/3rd matching | 0 (0) | 2 (100) | 2 (6.25) | |
None matching | 4 (100) | 0 (0) | 4 (12.5) |
ShadeEye Shade Matching, Cervical Third | ||||
---|---|---|---|---|
Accuracy of Shade, Criteria-Based Evaluation. | Government LABs (N and Row %) | Commercial LABs (N and Row %) | Total (N and Column %) | p Value |
Matching | 8 (40) | 12 (60) | 20(62.5) | 0.27 |
Non-Matching | 8 (66.6) | 4 (33.3) | 12 (37.5) | |
ShadeEye Shade Matching, Middle Third | ||||
Matching | 14 (51.8) | 13 (48.1) | 27 (84.4) | 1.0 |
Non-Matching | 2 (40) | 3 (60) | 5 (15.6) | |
ShadeEye Shade Matching, Incisal Third | ||||
Matching | 2 (16.6) | 10 (83.3) | 12 (37.5) | 0.004 |
Non-Matching | 14 (70) | 6 (30) | 20 (62.5) | |
Overall ShadeEye Shade Matching (All Thirds) | ||||
Complete Matching | 0 (0) | 8 (100) | 8 (25) | 0.001 |
2/3rd matching | 10 (83.4) | 2 (16.6) | 12 (37.5) | |
1/3rd matching | 4 (40) | 6 (60) | 10 (31.3) | |
None matching | 2 (100) | 0 (0) | 2 (6.2) |
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Bin-Shuwaish, M.S.; AlFawaz, Y.F.; AlGamaiah, H.A.; AlSani, A.S.; Abobakr, I.B.; Alzahrani, K.M.; Almutairi, B.; Attar, E.A.; Vohra, F.; Abduljabbar, T. Technical Accuracy of Dental Laboratories in the Quality and Shade Matching of Porcelain Fused to Metal Crowns: An In Vitro Study. Int. J. Environ. Res. Public Health 2021, 18, 2722. https://doi.org/10.3390/ijerph18052722
Bin-Shuwaish MS, AlFawaz YF, AlGamaiah HA, AlSani AS, Abobakr IB, Alzahrani KM, Almutairi B, Attar EA, Vohra F, Abduljabbar T. Technical Accuracy of Dental Laboratories in the Quality and Shade Matching of Porcelain Fused to Metal Crowns: An In Vitro Study. International Journal of Environmental Research and Public Health. 2021; 18(5):2722. https://doi.org/10.3390/ijerph18052722
Chicago/Turabian StyleBin-Shuwaish, Mohammed. S., Yasser F. AlFawaz, Hamad A. AlGamaiah, Abdulaziz S. AlSani, Ibrahim B. Abobakr, Khaled M. Alzahrani, Basil Almutairi, Esraa A. Attar, Fahim Vohra, and Tariq Abduljabbar. 2021. "Technical Accuracy of Dental Laboratories in the Quality and Shade Matching of Porcelain Fused to Metal Crowns: An In Vitro Study" International Journal of Environmental Research and Public Health 18, no. 5: 2722. https://doi.org/10.3390/ijerph18052722