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The digital workflow in dentistry has proven in the past decades to be a time-efficient, multifunctional, effortless, and accessible approach. The inherited shortages milling machines represented by the incapability to produce accurate complex hollow structures may give preference to modern 3D ceramic printing.
Computer-aided-design/computer-aided-manufacturing (CAD/CAM) in dentistry is a digital subtractive approach for manufacturing indirect restorations. Nevertheless, waste materials and milling burs wearing are considered as key disadvantages of CAD/CAM technology, and are the main drive to improve 3D printing technology (additive manufacturing) as the latter has shown considerable efficiency in minimising wasted materials.
Although additive manufacturing has been known since the 1980s, its application in dentistry is relatively new and not fully studied with limited research and in vivo studies on their clinical performance.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| CAD/CAM milled onlays | Active Comparator | CAD/CAM has had a lasting impact on the dental market for decades. Its clinical reliability compared to any other dental material has been well documented. Several clinical studies proved its high clinical performance and survival rate. As CAD/CAM systems have become established in producing indirect restorations, it is considered the gold standard of digital manufacturing technology in dentistry. |
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| 3D printed onlays | Experimental | 3D-printed restorations have shown several advantages. Some studies have shown that the edge and internal gap values of 3D printing restorations are significantly lower than those of milling restorations. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| CAD/Cam milled onlays | Other | The digital workflow in dentistry has proven in the past decades to be a time-efficient, multifunctional, effortless, and accessible approach. The inherited shortages milling machines represented by the incapability to produce accurate complex hollow structures may give preference to modern 3D ceramic printing. Computer-aided-design/computer-aided-manufacturing (CAD/CAM) in dentistry is a digital subtractive approach for manufacturing indirect restorations. Nevertheless, waste materials and milling burs wearing are considered as key disadvantages of CAD/CAM technology, and are the main drive to improve 3D printing technology (additive manufacturing) as the latter has shown considerable efficiency in minimising wasted materials. |
| Measure | Description | Time Frame |
|---|---|---|
| Fracture | This outcome will be measured using modified USPH criteria for clinical evaluation of restoration failure where they are given scores Alpha is excellent , Bravo is acceptable, Charlie is not accepted | One Year |
| Measure | Description | Time Frame |
|---|---|---|
| Retention | This outcome will be measured using modified USPH criteria for clinical evaluation of restoration failure where they are given scores Alpha is excellent , Bravo is acceptable, Charlie is not accepted | One Year |
| Marginal adaptation |
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Inclusion Criteria:
Age: 25-45 years.
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Nada Sameh assistant lecturer | Contact | 00201065228277 | nada.farouk@dentistry.cu.edu.eg |
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| 3D printed onlays | Other | 3D printing technologies are developing more intensively in dentistry as this technology has the capacity to produce shapes or models with high accuracy and in a short time. This method of fabrication takes less time and money and saves on materials compared to CAD/CAM. Although it seems that digital manufacturing technology has made great changes in the restorative dentistry field, this technology is still not fully in use. This is possibly because of the lack of studies and research on this technology, particularly in terms of clinical performance and patient-centred outcomes. 3D printing technologies are novel technologies with a lack of research; therefore, the processing of 3D printing materials is still controversial. |
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This outcome will be measured using modified USPH criteria for clinical evaluation of restoration failure where they are given scores Alpha is excellent , Bravo is acceptable, Charlie is not accepted
| One Year |
| Marginal discoloration | This outcome will be measured using modified USPH criteria for clinical evaluation of restoration failure where they are given scores Alpha is excellent , Bravo is acceptable, Charlie is not accepted | One Year |
| Secondary caries | This outcome will be measured using modified USPH criteria for clinical evaluation of restoration failure where they are given scores Alpha is excellent , Bravo is acceptable, Charlie is not accepted | One Year |
| Post-operative hypersensitivity | This outcome will be measured using modified USPH criteria for clinical evaluation of restoration failure where they are given scores Alpha is excellent , Bravo is acceptable, Charlie is not accepted | One Year |
| Surface texture | This outcome will be measured using modified USPH criteria for clinical evaluation of restoration failure where they are given scores Alpha is excellent , Bravo is acceptable, Charlie is not accepted | One Year |
| Anatomic form | This outcome will be measured using modified USPH criteria for clinical evaluation of restoration failure where they are given scores Alpha is excellent , Bravo is acceptable, Charlie is not accepted | One Year |