Evaluation and Comparison of Five-Year Survival of Tooth-Supported Porcelain Fused to Metal and All-Ceramic Multiple Unit Fixed Prostheses: A Systematic Review

Abstract

The prosthesis must have good survival despite being functional for at least 5-10 years. This makes sure that the replacement of missing teeth does not become a repeated expense. Of 579 identified articles, 15 met the inclusion criteria for systematic review. Missing teeth replacement materials are divided into two groups: porcelain fused to metal and all ceramics. Data related to survival rates as well as the most common mode of failure is observed from both groups. It was observed that porcelain fused to metal prostheses had an approximately 99.5% survival rate and an approximately 92% survival rate for all-ceramic tooth-supported prostheses after five years of insertion. Porcelain-fused-to-metal (PFM) prostheses had a better survival rate after five years of insertion as compared to all-ceramic prostheses. Porcelain fused to metal should be the treatment of choice for dentists and patients when missing teeth need to be fixed.

Metal–Ceramic Compatibility in Dental Restorations According to the Metallic Component Manufacturing Procedure

“…The blue color and the number 1 represent the defects, the inclusions, and the voids in the ceramic material; the yellow color and the number 2 represent the pores in the ceramic component. For the sintered part, the deposited ceramic has a crack (number 3) shown by white in Figure 3, and poor adhesion between the two components (4-red), as well as a visible defect in the metal part (5). For specimens obtained by milling, an improvement in the appearance of the micrography was observed, in the form of a slightly more homogeneous structure than that of the cast samples.…”

“…The systems obtained from these two types of materials have been successfully used in recent years, thanks to their ability to meet the functional requirements of dental restorations and, at the same time, offer excellent aesthetic results [ 2 , 3 ]. Their good corrosion behavior, especially under the influence of liquids in the oral cavity as well as their biocompatibility with oral tissues, have made them one of the most demanded options on the market [ 4 , 5 ].…”

“…The metal component in porcelain-fused-to-metal (PFM) restoration systems plays a crucial role in providing overall support and strength to a restoration. The metal substructure is usually made up of a combination of precious or non-precious metals, such as gold, silver, palladium, or cobalt–chromium alloy [ 5 ]. In addition, the metal surface must be properly prepared so that porcelain may properly stick to it.…”