A Study on Ceramic Abutment. Influence of Tribochemical Coating on Bond Strength.

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  • Hinokiyama Norihide
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Hagiwara Yoshiyuki
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Muramatsu Toru
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Kawamoto Yoshikazu
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Tanaka Seiji
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Koizumi Masayuki
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Igarashi Takayoshi
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry

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Other Title
  • セラミックアバットメントに関する研究　　Ｔｒｉｂｏｃｈｅｍｉｃａｌ　Ｃａａｔｉｎｇが接着強度に及ぼす影響
  • Influence of Tribochemical Coating on Bond Strength
  • Tribochemical coatingが接着強度に及ぼす影響

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Abstract

Purpose: We previously reported that alumina sandblasting had an effect on shear bond strength for ceramic abutment CerAdapt (Nobel Biocare), which is that made from densely sintered high-purity alumina. The purpose of this study was to evaluate the shear bond strength of CerAdapt treated by tribochemical coating of ROCATEC system (ESPE) compared with alumina sandblasting.<BR>Methods: The surface of CerAdapt was sandblasted by the ROCATEC system for 10 seconds, with 110 pm alumina particles, to clean the surface (ROCATEC-Pre), and then for 15 seconds with both special silica particles and 110μm silica coating alumina (ROCATEC-Plus, tribochemical coating). In contrast, the surface was sandblasted with 110μm alumina for 10 and 25 seconds.Prosthetic ceramic specimens (φ3.0×2.0mm) were made of IPS Empress (Ivoclar). The surface roughness and surface analysis of CerAdapt were evaluated after treatment of each group. Specimens for shear bond strength were made as follows: prosthetic ceramic specimens were bonded to CerAdapt sandblasted with resin cement Variolink II (Vivadent). Shear bond strength was measured using an Instron (cross head speed 1.0mm/min). The data were analyzed by one-way ANOVA (α=0.05).<BR>Results: While there was a significant difference for surface roughness, there was no significant difference for shear bond strength in alumina particle size. On the other hand, there was no significant difference in both surface roughness and shear bond strength as to treatment time. Silica was detected on the surface of CerAdapt after tribochemical coating of the ROCATEC system. Shear bond strength of the ROCATEC system was significantly higher than those of alumina sandblasting.<BR>Conclusions: The tribochemical coating of the ROCATEC system was superior to alumina sandblasting in shear bond strength. However, shear bond strength of CerAdapt was not influenced by differences in each of particle size and treatment time.

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