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The aim of this clinic self-control study was to evaluate the trueness of occlusal contact affected by six ceramic materials during chairside fabricating process and offer recommendations for occlusal offset according to different ceramic materials in CEREC CAD/CAM design process.
Ten participants were selected for this study. InCoris TZl(ZIR), Celtra Duo(CD), IPS e.max(EMA), UPCERA LICI (LC), Vita enamic(ENA), UPCERA RUNCI (RC) were used to produce crowns for everyone by CEREC chairside CAD/CAM system. The milling trueness, postprocessing trueness and clinical adjustment of occlusal contact were quantitatively analyzed by the ATOS high-precision scanner and Geomagic reverse engineering software.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Zirconia | Experimental | 10 crowns made of zirconia from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. |
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| Celtra Duo | Experimental | 10 crowns made of Celtra Duo from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. |
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| e.max CAD | Experimental | 10 crowns made of e.max CAD from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. |
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| Lici UPCERA | Experimental | 10 crowns made of Lici from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. |
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| Enamic | Experimental | 10 crowns made of Enamic from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Chairside CAD/CAM ceramic materials for dental restoration | Other | 6 crowns made from 6 chairside ceramic materials were milled by CEREC MCXL-EF mode for mandibular first molar of each participant. The six materials are as follows: ZIR: InCoris TZI (Dentsply Sirona, York, PA)， CD: Celtra Duo (Dentsply Sirona, York, PA), EMA: e.max CAD (ivoclar, Vivadent AG), LC: LiCi (UPCERA, China), ENA: Vita Enamic (Vita Zahnfabrik, Bad Sackingen, Germany) RC: RunCi (UPCERA, China) |
| Measure | Description | Time Frame |
|---|---|---|
| milling trueness(μm) | the absolute 3D deviation of occlusal contact points before and after milling | 1 week |
| postprocessing trueness(μm) | the absolute 3D deviation of occlusal contact points before and after postprocessing | 1 week |
| clinical trueness(μm) | the absolute 3D deviation of occlusal contact points before and after occlusal adjustment | 1 week |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Hao Yu | Fujian Medical University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Fujian Medical University | Fuzhou | Fujian | 350004 | China |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Oct 1, 2019 | Apr 15, 2022 | Prot_SAP_000.pdf |
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Ten individuals with tooth defect of mandibular first molar were selected to participate in the study. 6 crowns made from 6 chairside materials were milled by CEREC MCXL-EF mode for each mandibular first molar.
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Care providers and outcomes assessors wouldn't know the materials of the specimen.
| Runci UPCERA | Experimental | 10 crowns made of Runci from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. |
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