Tooth Defect
Conditions
Keywords
chairside CAD/CAM, ceramic materials, trueness, occlusal contact
Brief summary
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
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.
Interventions
OTHERChairside CAD/CAM ceramic materials for dental restoration
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)
Sponsors
Fujian Medical University
Study design
Allocation
NON_RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
DOUBLE (Caregiver, Outcomes Assessor)
Masking description
Care providers and outcomes assessors wouldn't know the materials of the specimen.
Intervention 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.
Eligibility
Sex/Gender
ALL
Age
20 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
1. with one mandibular first molar requiring crown restoration that have undergone root canal treatment; 2. with complete permanent dentition;
Exclusion criteria
1. with carious lesions, abrasions, attrition, erosions or any kind of tooth defects; 2. with any kind of restorations in occlusal surfaces; 3. with any sign of temporomandibular dysfunction.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| milling trueness(μm) | 1 week | the absolute 3D deviation of occlusal contact points before and after milling |
| postprocessing trueness(μm) | 1 week | the absolute 3D deviation of occlusal contact points before and after postprocessing |
| clinical trueness(μm) | 1 week | the absolute 3D deviation of occlusal contact points before and after occlusal adjustment |
Countries
China
Outcome results
None listed