• 대한치과교정학회지
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• 제40권1호
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• pp.27-33
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• 2010

성인 교정환자의 수요가 증가하면서 보철물 표면에 교정장치를 부착해야 하는 빈도가 늘어나고 있다. 본 연구는 금속표면에 교정장치를 직접 접착하고자 할 때 사용하는 metal primer와 silicoating으로 각각 금합금의 표면을 처리한 후 light emitting diode (LED) 광중합기를 사용하여 광중합을 시행하여 접착력을 평가해 보고자 하였다. Type III gold alloy 표면에 aluminum oxide를 이용한 sandblasting 후 4-META 계열의 metal primer로 처리한 시편과 silica를 이용한 sandblasting 후 silane으로 처리한 시편에 광중합형 접착레진인 Transbond XT를 이용하여 금속 브라켓을 접착하고 접착 후 1시간, 6시간, 24시간 후 전단접착강도의 변화를 비교, 관찰하였다. 측정된 값을 이원분산분석(two-way analysis of variance)을 이용하여 비교하고 두 가지 표면처리 방법 간에 접착강도에 차이가 있는지도 살펴보았다. 연구결과, metal primer에 비하여 silicoating을 시행한 시편에서 높은 전단접착강도가 관찰되었으며, 시간이 경과할수록 접착강도가 증가하는 경향을 보였다. Adhesive remnant index (ARI)에서는 군 간 유의한 차이를 보이지 않았다. LED를 이용하여 광중합을 시행하는 경우 법랑질에 비하여 긴 시간의 광중합을 실시하고 metal primer보다는 silicoating 방법을 사용하는 것이 금합금표면에 교정장치를 부착할 때 더 높은 접착강도를 얻을 수 있을 것이다.

• 대한치과보철학회지
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• 제27권2호
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• pp.101-121
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• 1989

This study investigated the effects of Silicoating procedure on the tensile bond strength of resin-bonded prostheses. The Rexillium III specimens were treated with electrochemical etching and Silicoating procedure, followed by thermocycling and the NNB, Pors-on 4, and Degudent-U specimens were treated with Silicoating procedure. The specimens were debonded in tension with a Tensilon machine. Also, all specimens were observed with SEM, concentration of Si elements was analyzed with EPMA, and the mode of failure was recorded. The results of this study were obtained as follows: 1. In the Rexillium III specimens, the tensile bond strength of the Silicoated specimens was higher than that of the electrochemically etched specimens, and significant differences were observed (P<0.05). 2. The tensile bond strength of electrochemically etched Rexillium III specimens, significant differences were observed between the thermocycled and nonthermocycled specimens (P<0.05), but no significant differences were observed in the Silicoated specimens (P>0.05). 3. The tensile bond strength of the Silicoated specimens decreased NNB, Pors-on 4, Rexillium III, and Degudent-U in that order named. 4. Unlike the electrochemically etched specimens, the Silicoated specimens showed gap-free metal-resin interfaces with SEM. 5. Compared to the electrochemically etched specimens, the Silicoated specimens showed higher concentration of Si elements at the metal-resin interfaces and resin cement. 6. Photographic evaluation (X2) of the fractured sites revealed mainly cohesive failures with the Silicoated specimens, and adhesive failures with the electrochemically etched specimens.

• 대한치과기공학회지
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• 제34권2호
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• pp.67-73
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• 2012

연구 목적: 임플란트의 하부구조를 상부 구조와 연결하는 레진시멘트의 접착강도를 높이기 위한 기계적 화학적인 표면처리 방법들이 연구 되고 있다. 이 연구에서 다양한 크기의 $Al_2O_3$ sandblasting과 Silano Pen으로 표면처리한 티타늄과 레진 시멘트의 접착강도를 알아보고자 한다. 연구 방법: 12개의 티타늄(Ti-6A1-4V)시편을 디스크 형태로 제작하여 자가중합 수지에 매립하였다. 이들을 각각 6개의 군으로 나누어 $50{\mu}m$, $90{\mu}m$, $110{\mu}m$ 등 3가지 크기의 $Al_2O_3$로 sandblasting 하는 조건과 $Al_2O_3$로 sandblasting한 후 Silano Pen(Bredent, bredent GmbH &Co.KG, Senden, Germany)을 사용한 군으로 나누었다. 표면처리 한 티타늄 표면에 레진시멘트(Duolink dual syringe, Bisco, USA)으로 접착하였다. 그 후 증류수($37^{\circ}C$)에 24시간 보관 후 접착강도 실험을 시행하였고, SEM을 사용하여 표면처리 한 표면과 접착강도 실험 후 파절양상을 관찰하였다. 결과: 통계학적 분석에 따르면 Silano Pen을 사용하여 표면처리한 군들의 접착강도가 높았다(P<0.05). 결론: Silano Pen을 사용하는 것이 티타늄과 레진시멘트의 접착강도를 증가 시킨다.

• 대한치과보철학회:학술대회논문집
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• 대한치과보철학회 1994년도 추계학술대회
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• pp.43-43
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• 1994

• 대한치과보철학회:학술대회논문집
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• 대한치과보철학회 1993년도 추계학술대회
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• pp.45-45
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• 1993

• 대한치과보철학회지
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• 제29권2호
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• pp.17-22
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• 1991

The purpose of this study was to evaluate the tensile bond strengths of treated alloy surfaces for resin bonded retainers. For the experiment metal surfaces of 5 alloys were teated with sandblasting, Silicoating Rocatec, and cemented with Visio-Gem. All specimens divided into two groups. The group I specimens were treated with 24-hour immersion in $37^{\circ}C$ distilled water, and group II specimens were teated with 1500 thermo-cycles from $5^{\circ}C\;to\;55^{\circ}C$. The obtained results were as follows: 1. Bond strength values showed significantly different between sandblasting group and other groups after a 24-hour immersion in $37^{\circ}C$ distilled water(P<0.05). 2. All samples were fractured during thermo-cycles for sandblasting group, and bond strength values for Silicoating and Rocatec groups showed significantly different after 1500 thermo-cycles from $5^{\circ}C\;to\;55^{\circ}C$.

• 대한치과보철학회지
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• 제40권4호
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• pp.344-351
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• 2002

The purpose of this study is to compare tensile bond strength between Cr-Co alloy and three denture base resins after surface treatment. Following the manufacturer's instructions, 180 bonded specimens were made from three denture base resins (Lucitone 199. Paladent 20. POSS resin) and three surface treatment methods (sandblasting. metal primer. silicoating) 20 samples were made in each group and a half was ther-mocycled 1000 times between $5^{\circ}C$ and $55^{\circ}C$. The tensile bond strength was measured using an Instron with 5mm/min crosshead speed. Data was analyzed with one-way ANOVA, T-test and Duncan test. The results were as follows : 1. Samples with metal primer coating had significantly high tensile bond strength than the other surface treated groups (p<.05). Significantly low tensile bond strength was shown in sand blasted groups (p<.05). 2. No significant difference was observed in metal primer coating groups before and after ther-mocycling (p>.05) 3. Tensile bond strength was decreased in silicoated samples after thermocycling (p<.05). 4. Of the surface treated groups with metal primer, Lucitone 199 had the greatest bond strength and POSS resin and Paladent 20 were followed (p<.05). 5. Of the surface treated groups with silicoating, POSS resin and Lucitone 199 had greater bond strength than Paladent 20 (p<.05).

• 대한치과보철학회지
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• 제33권1호
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• pp.1-12
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• 1995

For the purpose of this study, the silicoating on Ni-Cr-Be alloy surface was carried out by using the Silicoater MD. The effect of time delay after silicoating on the bond strength between the metal and resin cement was examined. The groups were divided into 4 : group 1 : Sandblasted with $250{\mu}m$ aluminium oxide, immediatly cemented group 2 : Sandblasted with $250{\mu}m$ aluminium oxide, silicoated and immediatly cemented group 3 : Sandblasted with $250{\mu}m$ aluminium oxide, silicoated and cemented after 7 days group 4 : Sandblasted with $250{\mu}m$ aluminium oxide, silicoated and coated with unfilled resin and cemented after 7 days Specimens were luted with Comspan, Superbond C&B or Panavia EX. The tensile bond strength between the metal and resin cement was measured by using the universal testing machine. The results were as follows : 1. The bond strength in groups 2, 3 and 4 was higher than that of group 1 (p<0.05). There was no statistically significant difference among the bond strength in groups 2, 3 and 4 (p>0.05). 2. In Comspan-cemented groups, there was no significant difference among the bond strength in groups 2, 3 and 4 (p<0.05). 3. In Panavia EX-cemented groups, the bond strength of group 3 was higher than that of group 2 (p<0.05) and there was no significant difference between groups 3 and 4. 4. In Superbond C&B-cemented groups, there was significant difference between groups 2 and 3 (p<0.05) and the bond strength of group 4 was higher than that of group 3 (p<0.05). 5. The highest tensile bond strength was obtained by using the Superbond C&B and no difference in the Panavia EX and Comspan. 6. The modes of bond failure were mainly cohesive failure. The method of storage and transport indicated in this study seems recommendable for laboratory and clinical use at least up to 7 days.

• 대한치과보철학회지
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• 제32권4호
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• pp.471-483
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• 1994

The purpose of this experiment was to determine the effects of various surface treatments on veneering resin to metal bond for Ni-Cr alloy. The metal surfaces were treated as follows, Group 1 : Ground with carborudum point and followed by silicoating Group 2 : Sandblasted with $50{\mu}m$ aluminum oxide and followed by silicoating Group 3. Sandblasted with $250{\mu}m$ aluminum oxide and followed by silicoating Group 4 : Beaded with $200{\mu}m$ retention structures and followed by silicoating Group 5 : Silicoated in as cast condition Group 6. Beaded with $200{\mu}m$ retention structures only All specimens were veneered with resin. Each group was consisted of 20 specimens. 10 specimens were storaged in $37^{\circ}C$ water for 3 days and the rest 10 specimens were thermocycled 1000 times at temperature of $5^{\circ}C\;to\;55^{\circ}C$. The effects of various surface treatments on the bond strength between resin and metal interface were studied by means of four-point flexure test. The specimens which bad been ground with carborundum point. sandblasted with $50{\mu}m$ and $250{\mu}m$ aluminum oxide. beaded with $200{\mu}m$ retention structures and not been treated were observed with SEM. The following results were obtained 1. The bond strength of groups 2, 3, 4 and 6 were higher than the that of groups 1 and 5 (p<0.05) in the case of being storaged in $37^{\circ}C$ water for 3 day and there was no statistically significant difference in bond strength among groups 2, 3, 4 and 6. and between groups 1 and 5 (p>0.05). 2. The bond strength of the case of being thermocycled decreased in the following orders : groups 2, group 4, group 3, group 6, group 1, group 5 and there was no statistically significant difference in bond strength among groups 2, 3 and 4, between groups 1 and 5 (p>0.05). 3. A statistical difference in bond strength of each group between storaged and being thermocycled was demonstrated for group 5 (p<0.05). 4. The treated surfaces of groups 2, 3 and 4 had more fine undercut than that of groups 1 and 5 with SEM.

• 구강회복응용과학지
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• 제22권2호
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• pp.125-136
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• 2006

Statement of problem. The success of the bonding between electroforming gold and resin is dependent on the surface-conditioning technique but its effective technique has net been studied widely. Purpose. The purpose of the study was to evaluate the bond strength between the electroforming gold and resin with varying the surface-conditioning technique. Materials and methods. Sixty rectangular shaped metal specimens were made and one side of each specimen were gold hard plated. The sand-blasted specimens were divided into four experimental groups with fifteen specimens in each group and were treated as follows. Group 1: Silicoating (Rocatec, 3M ESPE)+ Sinfony (3M ESPE), Group 2: SR Link+ SR Adoro (Ivoclar Vivadent), Group 3: Tin plating (Microtin, Danville Engineering)+ SR Link+ SR Adoro, Group 4: Tin plating (Micro tin, Danville Engineering)+ Silicoating (Rocatec)+ Sinfony. Shear bond strength at metal-resin interface were measured using universal testing machine. Energy Dispersive x-ray analysis was done and scanning electron microscope images were taken and observed. Results and Conclusion. The following conclusions were drawn. 1. The mean shear bond strength values in order were 11.69MPa (Group 2), 22.35MPa (Group 3), 22.40MPa (Group 1) and 27.71MPa (Group 4). There was no significant difference in Group 1, Group 3 and Group 4(P>0.05). 2. In the EDX line analysis, the Au was detected on the surface of all specimen. $SnO_2$ showed on the surface of Group 2 and $SiO_2$ was detected on the surface of Group 1. 3. Increasing of roughness by sandblasting(Group 2), formation of micro-irregularities and tin crystals by electrolytic tin plating(Group 3) and formation of surface irregularities and $SiO_2$ layer(Group 1,4) were observed in SEM photo. 4. Tin plating(Group 3) and Rocatec treatment(Group 1) showed clinically effective shear bond strength(>20MPa), but when the two surface conditioning method were used together higher bond strength were achieved.