Clinical Performance and Wear Mechanism of Hot-Pressed Ceramic Crowns

Ceramic and Dental Enamel Wear Clinical Trial

Official title:

Clinical Performance and Wear Mechanism of Hot-Pressed Ceramic Crowns

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00889239
• Other study ID #: MRG 4780066
• Status: Completed
• Phase: N/A
• First received: April 25, 2009
• Last updated: May 14, 2015
• Start date: May 2004
• Est. completion date: April 2015

Study information

• Verified date: May 2015
• Source: Mahidol University
• Contact: n/a
• Is FDA regulated: No
• Health authority: Thailand: Ethical Committee
• Study type: Interventional

Clinical Trial Summary

The objectives of this study are to characterize the clinical performance and wear mechanisms of all-ceramic posterior crowns. The wear rate of all-ceramic crowns and opposing enamel in selected patients will be quantified. The relationship of each subject's maximum clenching force and wear rate will also be analyzed.

Description:

High strength ceramics have been used in dentistry for constructing fixed partial denture. Their advantages are their acceptable fracture resistance, excellent biocompatibility, moderate opacity, etc. Because the increase in demand for more esthetic restoration, various ceramic materials have been used as a core material for several all-ceramic systems. Their properties have been investigated extensively in many in vitro studies. Currently, there are not much results regarding clinical performance and wear mechanism of ceramic-based prosthesis and more information are required for future research.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 30
• Est. completion date: April 2015
• Est. primary completion date: April 2015
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Both
• Age group: 18 Years to 60 Years

Eligibility

Inclusion Criteria:

• Occlusion: At least 20 remaining teeth for each patient, and at least one posterior endodontically treated tooth with natural opposing teeth

• Bruxism: No evidence based on an intraoral examination

• Dental history: No evidence of either moderate or severe periodontal disease

• Medical history: Good to excellent general health

Exclusion Criteria:

• Periodontal status: Pocket depth greater than 4 mm

• Occlusion:

• Evidence of bruxism or excessive biting or clenching force

• Abutment tooth that opposes a removable partial denture

• Abutment tooth for fixed partial dentures

• Gingival recession of an abutment tooth more than 1 mm from the cementoenamel junction

• Tooth with first or second degree of tooth mobility

• Tooth with extensive carious lesions

Study Design

Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Ceramic and Dental Enamel Wear

Intervention

Other:
• lithia-disilicate-based crown
all-ceramic crown

Locations

Country	Name	City	State
Thailand	Faculty of Dentistry, Mahidol University	Bangkok

Sponsors (2)

Lead Sponsor	Collaborator
Mahidol University	Thailand Research Fund

Country where clinical trial is conducted

Thailand, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Clinical performance		5 years	No
Secondary	wear rate		2 years	No