sidebar-ad

European Journal of Prosthodontics and Restorative Dentistry

Marginal Adaptation, Gap Width, and Fracture Strength of Teeth Restored With Different All-Ceramic Vs Metal Ceramic Crown Systems: An in Vitro Study

Abstract

ABSTRACT
This study evaluated marginal adaptation before and after thermomechanical (TCML) loading, gap width and fracture strength of all-ceramic single crowns, as compared to porcelain-fused-to-metal (PFM). Thirty extracted premolars were prepared with a round shoulder of 1.0 mm depth. Specimens were restored with zirconia–ceramic (Group 1), lithium disilicate (Group 2) and metal–ceramic single crowns (Group 3). The replica of each sample was observed with a scanning electron microscope (SEM) to evaluate the crown–cement (c–c) and tooth–cement interface (t–c). After TCML, perfect margins decreased to 91.3% (c–c) and 93.9% (t–c) in Group 1, 94.6% (c–c) and 96.0% (t–c) in Group 2 and 73.5% (c–c) and 53.1% (t–c) in Group 3. The mean fracture strengths were 654.8 ± 98.1 N for Group 1, 551.3 ± 127 N for Group 2 and 501.43 ± 110.1 N for Group 3. All-ceramic systems could substitute for metal–ceramic crowns, but chipping of veneering ceramics, especially in zirconia-based crowns, should be investigated.

Keywords
Zirconia
Fracture Strength
Lithium Disilicate
CAD/CAM System
Marginal Adaptation
All-Ceramic System

Authors

Roberto Scotti, Prof. Paolo Baldissara, Altin Llukacej, Martin Rosentritt, Prof. Carlo Monaco

Articles from this issue

Title / DOI Access Page Start Page End Purchase
‘Own-Label’ Versus Branded Commercial Dental Resin Composite Materials: Mechanical And Physical Property Comparisons
10.1922/EJPRD_01559Shaw08
no access 122 129 £10.00
Marginal Adaptation, Gap Width, and Fracture Strength of Teeth Restored With Different All-Ceramic Vs Metal Ceramic Crown Systems: An in Vitro Study
10.1922/EJPRD_01550Monaco08
no access 130 137 £10.00
Effects of Different Porcelains and Shades on Light Transmission and Resin Polymerization
10.1922/EJPRD_01553Alshaafi07
no access 138 144 £10.00
Anti-Inflammatory and Regenerative Effects of Albanian Propolis in Experimental Vital Amputations
10.1922/EJPRD_1492Meto07
no access 145 151 £10.00
A Practice-Based Clinical Evaluation of a Bulk Fill Restorative Material
10.1922/EJPRD_01545Burke06
no access 152 157 £10.00
A Survey on Prevalence, Causes and Prevention of Postcementation Hypersensitivity
10.1922/EJPRD_01554Demirtag06
no access 158 163 £10.00
Fracture of Zirconia Abutment with Metallic Insertion on Anterior Single Titanium Implant with Internal Hexagon: Retrieval Analysis of a Failure
10.1922/EJPRD_01556Bottino05
no access 164 168 £10.00
  • free access Free Access
  • no access No Access
  • full access Full Access

Subscriptions