Accession Number:

AD1182981

Title:

Fracture Resistance of Endodontically Accessed Minimal Thickness All-Ceramic Restorations

Descriptive Note:

[Technical Report, Master's Thesis]

Corporate Author:

UNIFORMED SERVICES UNIV OF THE HEALTH SCIENCES BETHESDA MD

Personal Author(s):

• Chia, Anthony Y

Report Date:

2021-06-28

Pagination or Media Count:

29

Abstract:

Advances in material science and bonding chemistry allows for fabrication of thinner all-ceramic restorations. Questions remain regarding their strength after endodontic access and repair. Objective This study will compare the fracture resistance of three types of ceramic crowns that have been endodontically accessed and repaired. Methods Sixty minimal thickness crowns will be digitally designed. Twenty crowns will be milled from lithium disilicate LiS2, twenty from medium translucency zirconia ZMT, and twenty from low translucency zirconia ZLT. The crowns will be crystallized or sintered and adhesively bonded with a dual-cured resin cement to dies milled from a continuous filament woven fiberglass bonded epoxy resin. Ten samples of each crown type will undergo endodontic access and repair with nanohybrid composite resin. All specimens will undergo static load testing on a universal testing machine with a compressive force applied until failure. Results Study ongoing. Conclusions To be determined.

Descriptors:

• teeth
• computer-aided design
• fabrication
• three dimensional
• aluminum oxides
• materials
• resins
• universities
• chemistry
• data analysis
• materials processing
• materials science
• mechanical properties
• resistance
• schools
• adhesives
• composite materials

Subject Categories:

• Medical Facilities, Equipment and Supplies
• Ceramics, Refractories and Glass
• Mechanics

Distribution Statement:

[A, Approved For Public Release]