Efficacy of various cleaning solutions on saliva-contaminated zirconia for improved resin bonding
김다혜, 손준식, 정성화, 김영경, 김교한, 권태엽,
소속 상세정보
김다혜 ( Kim Da-Hye ) - Kyungpook National University Graduate School Department of Medical & Biological Engineering
손준식 ( Son Jun-Sik ) - Korea Textile Development Institute
정성화 ( Jeong Seong-Hwa ) - Daegu Haany University Faculty of Health Science
김영경 ( Kim Young-Kyung ) - Kyungpook National University School of Dentistry Department of Conservative Dentistry
김교한 ( Kim Kyo-Han ) - Kyungpook National University School of Dentistry Department of Dental Biomaterials
권태엽 ( Kwon Tae-Yub ) - Kyungpook National University School of Dentistry Department of Dental Biomaterials
KMID : 1023820150070020085
Abstract
PURPOSE : This study aimed to investigate the efficacy of cleaning solutions on saliva-contaminated zirconia in comparison to air-abrasion in terms of resin bonding.
MATERIALS AND METHODS : For saliva-contaminated airabraded zirconia, seven cleaning methods)-no contamination (NC), water-spray rinsing (WS), additional airabrasion (AA), and cleaning with four solutions (Ivoclean [IC]; 1.0 wt% sodium dodecyl sulfate [SDS], 1.0 wt% hydrogen peroxide [HP], and 1.0 wt% sodium hypochlorite [SHC])-were tested. The zirconia surfaces for each group were characterized using various analytical techniques. Three bonded resin (Panavia F 2.0) cylinders (bonding area: 4.5 mm2) were made on one zirconia disk specimen using the Ultradent jig method [four disks (12 cylinders)/group; a total of 28 disks]. After 5,000 thermocycling, all specimens were subjected to a shear bond strength test with a crosshead speed of 1.0 mm/minute. The fractured surfaces were observed using an optical and scanning electron microscope (SEM).
RESULTS : Contact angle measurements showed that groups NC, AA, IC, and SHC had hydrophilic surfaces. The X-ray photoelectron spectroscopy (XPS) analysis showed similar elemental distributions between group AA and groups IC and SHC. Groups IC and SHC showed statistically similar bond strengths to groups NC and AA (P>.05), but not groups SDS and HP (P<.05). For groups WS, SDS, and HP, blister-like bubble formations were observed on the surfaces under SEM.
CONCLUSION : Within the limitations of this in vitro study, some of the cleaning solutions (IC or SHC) were effective in removing saliva contamination and enhancing the resin bond strength.
키워드
Zirconia; Saliva; Cleaning agent; Dental bonding
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