부가중합형 실리콘 고무인상재의 표면에너지와 접촉각 (Surface Energy and Contact Angle of Polyvinylsiloxane Elastomeric Impression Materials)

서지정보

· 발행기관 : 대한치과재료학회
· 수록지 정보 : 대한치과재료학회지 / 35권 / 1호 / 7 ~ 16페이지
· 저자명 : 임소현, 김민강, 황문진, 송호준, 양홍서, 박영준

초록

For the excellent detail reproduction of moist gingival sulcus, interproximal, and marginal areas,
the polyvinylsiloxane impression materials need to readily flow into those moise areas with good wettability and flowability. This study was purposed to evaluate the water contact angle and surface energy of various commercial addition silicone rubber impression materials (PVS), and to investigate the relationship between those properties. Seven light-body PVS materials [Affinis (Coltene Whaledent, Germany); AF, Aquasil LV(Dentsply, U.S.A.); AQ, Bisico superhydrophil S4 (Bisico, Germany); BI, Charmflex (Dentkist Inc., Korea); CH, Exahiflex (GC Co., Japan); EH, Examixfine (GC Co., Japan); EF, Provil NOVO fast-set (Heraeus kulzer, Germany); PR], and two medium-body monophase PVS [Honigum automix-mono (DMG, Germany); HG, Aquasil monophase (Dentsply, U.S.A.); AM] were involved in this study. The contact angles on respective sample surfaces were evaluated by taking the image with image
analyzing microscope (Camcope, Sometech Inc, Korea) at 30 sec after dropping one drop of distilled water (12 ㎕) on each surface, and followed by calculation of the angle using image analysis software (Surftens QA 3.0, OEG GmbH, Germany). For surface energy measurement, distilled water, formamide (polar), and diidomethane (non-polar) were used as standard liquid phases, and the surface energies were calculated from the contact angles of those solutions on each impression material sample by applying Lifschitz-van der Waals and Lewis acid/base
interfacial model. Triplicate samples were tested for contact angle and surface energy per each material group. One-way ANOVA test followed by Duncan's multiple range test was performed to evaluate the significance of the results between material groups, and Spearman correlation test was performed to evaluate the correlation between water contact angle and surface energy of the tested materials.
1. Among light body materials, BI (16.23±1.57°) showed significantly lower contact angle (degrees), and CH (56.94±2.70°) and EH (61.99±3.36°) showed higher contact angles (p<0.05). HG (63.03±0.29°), which is a monophase material, showed highest contact angle among all tested groups with significant difference except EH (p<0.05).
2. The BI group showed highest surface energy (65.36±0.87 dyne/cm) and HG, which showed
highest water contact angle, showed second lowest surface energy (47.15±0.87 dyne/cm).
3. There was reverse correlation between water contact angle (X) and surface energy (Y) with
the correlation equation of Y=-0.40X+70.33 (r= - 0.833, p=0.005).

영어초록

For the excellent detail reproduction of moist gingival sulcus, interproximal, and marginal areas,
the polyvinylsiloxane impression materials need to readily flow into those moise areas with good wettability and flowability. This study was purposed to evaluate the water contact angle and surface energy of various commercial addition silicone rubber impression materials (PVS), and to investigate the relationship between those properties. Seven light-body PVS materials [Affinis (Coltene Whaledent, Germany); AF, Aquasil LV(Dentsply, U.S.A.); AQ, Bisico superhydrophil S4 (Bisico, Germany); BI, Charmflex (Dentkist Inc., Korea); CH, Exahiflex (GC Co., Japan); EH, Examixfine (GC Co., Japan); EF, Provil NOVO fast-set (Heraeus kulzer, Germany); PR], and two medium-body monophase PVS [Honigum automix-mono (DMG, Germany); HG, Aquasil monophase (Dentsply, U.S.A.); AM] were involved in this study. The contact angles on respective sample surfaces were evaluated by taking the image with image
analyzing microscope (Camcope, Sometech Inc, Korea) at 30 sec after dropping one drop of distilled water (12 ㎕) on each surface, and followed by calculation of the angle using image analysis software (Surftens QA 3.0, OEG GmbH, Germany). For surface energy measurement, distilled water, formamide (polar), and diidomethane (non-polar) were used as standard liquid phases, and the surface energies were calculated from the contact angles of those solutions on each impression material sample by applying Lifschitz-van der Waals and Lewis acid/base
interfacial model. Triplicate samples were tested for contact angle and surface energy per each material group. One-way ANOVA test followed by Duncan's multiple range test was performed to evaluate the significance of the results between material groups, and Spearman correlation test was performed to evaluate the correlation between water contact angle and surface energy of the tested materials.
1. Among light body materials, BI (16.23±1.57°) showed significantly lower contact angle (degrees), and CH (56.94±2.70°) and EH (61.99±3.36°) showed higher contact angles (p<0.05). HG (63.03±0.29°), which is a monophase material, showed highest contact angle among all tested groups with significant difference except EH (p<0.05).
2. The BI group showed highest surface energy (65.36±0.87 dyne/cm) and HG, which showed
highest water contact angle, showed second lowest surface energy (47.15±0.87 dyne/cm).
3. There was reverse correlation between water contact angle (X) and surface energy (Y) with
the correlation equation of Y=-0.40X+70.33 (r= - 0.833, p=0.005).

참고자료

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