Occlusal Contact Trueness Affected by Six Chairside CAD/CAM Ceramic Materials

Study Overview
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Brief Summary
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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.

Detailed Description
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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.

Official Title
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Quantitative Clinical Evaluation of the Occlusal Contact Trueness Affected by Six Chairside CAD/CAM Ceramic Materials：a Self-control Study

Conditions
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Tooth Defect

Intervention / Treatment
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* Other: Chairside CAD/CAM ceramic materials for dental restoration


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: with one mandibular first molar requiring crown restoration that have undergone root canal treatment; with complete permanent dentition; Exclusion Criteria: with carious lesions, abrasions, attrition, erosions or any kind of tooth defects; with any kind of restorations in occlusal surfaces; with any sign of temporomandibular dysfunction.

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Interventional Model Description: 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.
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Zirconia<br>10 crowns made of zirconia from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. | Other: Chairside CAD/CAM ceramic materials for dental restoration<br>* 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)<br>|
| Experimental: Celtra Duo<br>10 crowns made of Celtra Duo from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. | Other: Chairside CAD/CAM ceramic materials for dental restoration<br>* 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)<br>|
| Experimental: e.max CAD<br>10 crowns made of e.max CAD from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. | Other: Chairside CAD/CAM ceramic materials for dental restoration<br>* 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)<br>|
| Experimental: Lici UPCERA<br>10 crowns made of Lici from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. | Other: Chairside CAD/CAM ceramic materials for dental restoration<br>* 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)<br>|
| Experimental: Enamic<br>10 crowns made of Enamic from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. | Other: Chairside CAD/CAM ceramic materials for dental restoration<br>* 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)<br>|
| Experimental: Runci UPCERA<br>10 crowns made of Runci from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth. | Other: Chairside CAD/CAM ceramic materials for dental restoration<br>* 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)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | 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 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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chairside CAD/CAM, ceramic materials, trueness, occlusal contact