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Completed

NCT Number: NCT05346744

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

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.

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Key information

Conditions

Tooth Defect

Age range

20 year–30 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Fujian Medical University

Fuzhou, Fujian, 350004, China

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

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)

Primary outcomes

  1. milling trueness(μm)

    Time frame: 1 week

    the absolute 3D deviation of occlusal contact points before and after milling

  2. postprocessing trueness(μm)

    Time frame: 1 week

    the absolute 3D deviation of occlusal contact points before and after postprocessing

  3. clinical trueness(μm)

    Time frame: 1 week

    the absolute 3D deviation of occlusal contact points before and after occlusal adjustment

Sponsors and collaborators

Lead sponsor

Fujian Medical University

Other

Registry information

Official study title

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

Important dates

Study start
2019
Primary completion
2021
Study completion
2021
First posted
Apr 26, 2022
Registry last updated
Apr 26, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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