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

Not Applicable

Completed

• Conditions: Tooth Defect
• Interventions: Other: Chairside CAD/CAM ceramic materials for dental restoration

• Registration Number: NCT05346744
• Lead Sponsor: Fujian Medical University

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.

Study Timeline

• Study Start: 2019-11-01
• Primary Completion: 2021-07-01
• Study Completion: 2021-08-01
• Status Verified: 2022-04
• Study First Submitted: 2022-04-15
• Study First Submitted QC: 2022-04-21
• Last Update Submitted: 2022-04-21
• Study First Posted: 2022-04-26
• Last Update Posted: 2022-04-26

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 10

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.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Enamic	Chairside CAD/CAM ceramic materials for dental restoration	10 crowns made of Enamic from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth.
Lici UPCERA	Chairside CAD/CAM ceramic materials for dental restoration	10 crowns made of Lici from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth.
Celtra Duo	Chairside CAD/CAM ceramic materials for dental restoration	10 crowns made of Celtra Duo from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth.
e.max CAD	Chairside CAD/CAM ceramic materials for dental restoration	10 crowns made of e.max CAD from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth.
Runci UPCERA	Chairside CAD/CAM ceramic materials for dental restoration	10 crowns made of Runci from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth.
Zirconia	Chairside CAD/CAM ceramic materials for dental restoration	10 crowns made of zirconia from 10 individual were milled, post-processed and occlusal adjusted in patients' mouth.

Primary Outcome Measures

Name	Time	Method
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

Trial Locations

Locations (1)

Fujian Medical University; 🇨🇳 Fuzhou, Fujian, China