Esthetic Posterior Stainless Steel Crowns and their Relative Shear Strengths

Purpose: The purpose of this study was to evaluate esthetic posterior stainless steel crowns (EP-SSC) and compare their relative shear strengths.Methods: Sixty EP-SSC were compared. 15 crowns from NuSmile® Primary Crowns, Kinder Krowns, and Dental Innovators 1UP and EC Crowns were studied. The crowns were cemented to a typodont tooth then thermally cycled in water baths to simulate oral conditions. Shear strengths were evaluated by subjecting these crowns to simulated forces of occlusion.Results: The force required to cause shearing of the esthetic facings was statistically significant. With the 1UP crown being significantly weaker than the other crowns tested. Conclusion: The 1 UP crowns failed at lower levels of force than the other types of EP-SSC. The shear strengths for the three other crown types were not statistically different from each other. The esthetic facings do not likely fail from the single point load of a child's bite.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Pediatric Dentistry

Year dc:date.available

2008

Author dc:creator

• Carmichael, Lonny Dale

Contributors dc:contributor

• Dr. Tegwyn H. Brickhouse

• crowns
• teeth
• crown strength
• esthetic facing
• dental caries
• oral health
• Dentistry
• Medicine and Health Sciences
• Pediatric Dentistry and Pedodontics

Statement dc:rights

• © The Author

Identifier

https://scholarscompass.vcu.edu/etd/937

OAI identifier oai:identifier

oai:scholarscompass.vcu.edu:etd-1936