Characteristics of Diamond-Like Carbon Films Deposited on Polymer Dental Materials

Abstract

Characterizations of diamond-like carbon (DLC) deposited on a polymer artificial tooth were performed. DLC films were deposited on dental parts made of poly(methyl methacrylate) (PMMA) resin by dc-pulse plasma chemical vapor deposition (CVD) from methane. Wear resistance test results revealed that a DLC-coated resin tooth has a very high wear resistance against tooth brushing, and endures 24 h brushing without a marked weight decrease. Cell cultivation test results show that DLC plays an important role in preventing cell death. Moreover, a biocompatibility test using a rabbit revealed that a connective tissue in the vicinity of DLC-coated PMMA is significantly thinner than that of noncoated PMMA. The numbers of inflammatory cells in the vicinity of DLC-coated and noncoated surfaces are 0 and 508 cells/mm 2 , respectively. These results led us to conclude that DLC films are an excellent material for use as the coating of a polymer artificial tooth in terms of not only high wear resistance but also biocompatibility. #

Modeling of the plasmonic properties of DLC‐Ag nanocomposite films

“…Diamond‐like carbon (DLC) films have been the subject of considerable attention due to their extraordinary properties such as low friction coefficient and high wear resistance; high corrosion resistance and chemical inertness; high electrical resistivity; infrared‐transparency, and high refractive index . Therefore, many applications of DLC films have already been applied for practical use such as mechanical elements , optical components , or biomaterials . Metal containing DLC films showing excellent potential in various practical applications attract much attention as well.…”

Effect of a diamond-like carbon film on the mechanical and surface properties of microwave-cured polymethylmethacrylate

“…Polymethylmethacrylate (PMMA), commonly known as acrylic resin, is a hydrophilic bioinert polymer (Ykada, 1994) whose main advantages are low cost, transparency and easy handling (Ban et al, 2009;Ohtake, et al, 2012). Since its inception more than 80 years ago, PMMA has been widely used in dentistry, especially in the areas of prosthodontics and oral rehabilitation (Barbosa, et al, 2003).…”

“…Since its inception more than 80 years ago, PMMA has been widely used in dentistry, especially in the areas of prosthodontics and oral rehabilitation (Barbosa, et al, 2003). The desirable mechanical, optical and electrical properties and biocompatibility enable the use of PMMA to fabricate occlusal splints and orthodontic appliances and prostheses, whether total, partial, provisional or over-implant (Barbosa, et al, 2003;Corazza, et al, 2014;Li, et al, 2000;Lin, et al, 2008;Ohtake, et al, 2012;Sharma, et al, 2010;Zhang, et al, 2016).…”

Effects of Radical Species on Structural and Electronic Properties of Amorphous Carbon Films Deposited by Radical-Injection Plasma-Enhanced Chemical Vapor Deposition

“…[1][2][3] These films are composed of sp 3 carbon (C), sp 2 -C, and hydrogen (H). [4] It is believed that their diverse properties, running from electrically conductive to insulating, from exceptionally hard to soft, and from optically transparent to opaque, can be attributed to variations in the relative ratios of these species.…”

“…Amorphous carbon (a‐C) films have attracted much attention, because of both scientific interest and promising industrial applications, owing to their excellent, wide‐ranging physical and chemical characteristics . These films are composed of sp 3 carbon (C), sp 2 ‐C, and hydrogen (H) .…”