The effect of a leucite-containing ceramic filler on the abrasive wear of dental composites

Examination of composite resins with electron microscopy, microhardness tester and energy dispersive X-ray microanalyzer

“…The filler contents showed great diversity, whereby elements such as Na, Al, K, Ti, Co, Sr, Zr, and Ba were detected. Nevertheless, in agreement with previous reports 13) , Si seemed to be a common filler component. Secondary caries at the tooth-restoration margin is the most frequently cited reason for restoration replacements 22) .…”

“…These findings were consistent with the significant differences in filler particle numbers and sizes of composite resins reported by Jaarda et al 3) . The size and characteristics of filler particles have been considered as significant factors in the rate of wear of composites 3,10,13,14) . Although the property of wear was not evaluated in this study, practitioners should keep in mind that wear is the loss of material through different processes: abrasion, adhesion, fatigue and corrosive effects which act in various combinations depending on the properties of the materials.…”

“…Although the property of wear was not evaluated in this study, practitioners should keep in mind that wear is the loss of material through different processes: abrasion, adhesion, fatigue and corrosive effects which act in various combinations depending on the properties of the materials. Abrasion and attrition have been identified as the main clinical wear mechanisms for dental composites 13) . It has been reported that the addition of filler particles to a composite increases its wear resistance 10) , but that optimal enhancement of wear resistance can be achieved only if the particles are well bonded to the resin matrix 4,10,13,15) .…”

“…Abrasion and attrition have been identified as the main clinical wear mechanisms for dental composites 13) . It has been reported that the addition of filler particles to a composite increases its wear resistance 10) , but that optimal enhancement of wear resistance can be achieved only if the particles are well bonded to the resin matrix 4,10,13,15) . For this reason, silane coupling agents have been introduced to provide good bonding between fillers and resin matrix components in dental composites, but this bond can be degraded by water absorbed by the composites 4,10) .…”

Experimental Investigations of Mechanical Characteristics and Tribological Mechanisms of Nanometric Zirconia Dental Ceramics

“…It can achieve the best artistic coordination with the gingiva mucosa, and the dark grey of metal foundationpiles can be avoided. In 1997, Pigot planted 141 ZrO 2 ceramic endosteal implants in the lower jawbones of 39 patients to support the complete lower denture and achieved a better clinical effect compared with that of Ti implants in the corresponding period [1][2][3][4]; Schultze designed an animal model with apiceotomy being conducted and used ZrO 2 ceramics as inside-fang and insidebone implants, with which not only excellent root canal sealing could be formed, but osseointegration could be achieved so that the teeth could be more stabilized; Percy Milleding tested the characteristics of the biomembrane formed by salivary protein and plasma protein on different kinds of dental ceramics and noticed that no salivary protein was adsorbed at the surface of zirconia ceramics but all plasma protein appeared on the biomembrane at the surface *Address correspondence to this author at the School of Mechanical Engineering, Qingdao Technological University, 266033, China; Tel: +86-0532-85071757; E-mail: sy_lichanghe@163.com of zirconia ceramics. Such a weak adsorption to salivary protein not only occurred in ZrO 2 ceramics but in Al 2 O 3 ceramics.…”