• 대한치과보존학회:학술대회논문집
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• 대한치과보존학회 2003년도 제120회 추계학술대회 제 5차 한ㆍ일 치과보존학회 공동학술대회
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• pp.625-625
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• 2003

I. Objectives Self-etching primer adhesive system is affected to dentin surface conditioning and priming. Especially application time of self-etching primer is very important factor of clinical procedure which has direct influence on smear layer, etching reaction and primer penetration to dentin. This study evaluated the influence of application time of self-etching primers on microtensile bond strength (${\mu}{\;}TBS$) to dentin using three self-etching primer adhesive systems.(omitted)

• Restorative Dentistry and Endodontics
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• 제39권1호
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• pp.32-38
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• 2014

Objectives: In this study, we evaluated the antibacterial activity of self-etching adhesive systems against Streptococcus mutans using the agar diffusion method. Materials and Methods: Three 2-step systems, Clearfil SE Bond (SE, Kuraray), Contax (CT, DMG), and Unifil Bond (UnB, GC), and three 1-step systems, Easy Bond (EB, 3M ESPE), U-Bond (UB, Vericom), and All Bond SE (AB, BISCO) were used. 0.12% chlorhexidine (CHX, Bukwang) and 37% phosphoric acid gel (PA, Vericom) were used as positive controls. Results: The antibacterial activity of CHX and PA was stronger than that of the other groups, except SE. After light activation, the inhibition zone was reduced in the case of all 2-step systems except CT. However, all 1-step systems did not exhibit any inhibition zone upon the light activation. Conclusions: SE may be better than CT or UnB among the 2-step systems with respect to antibacterial activity, however, 1-step systems do not exhibit any antibacterial activity after light curing.

• 대한소아치과학회지
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• 제36권4호
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• pp.514-521
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• 2009

이 연구의 목적은 유치와 영구치의 법랑질에 자가 산부식 접착제 적용 전 부가적인 산부식 시간을 달리 하였을 때, 전단결합강도에 미치는 영향을 알아보기 위함이다. 각각 65개의 발거된 건전한 유치와 영구치 협, 설면 법랑질 시편을 제작하고 두 종류의 자가 산부식 접착제를 적용하였다. 실험군은 $Clearfil^{TM}$ SE bond, $Adper^{TM}$ $Prompt^{TM}$ $L-pop^{TM}$으로 처리한 두 개 군으로 나누고, 이를 다시 산부식 시간에 따라 여섯 군(0, 5, 10, 15, 20, 30초)으로 분류하였다. 대조군으로는 total-etching system인 $Adper^{TM}$ $Scotchbond^{TM}$ Multi-purpose plus를 사용하였다. 접착제 처리면을 복합레진으로 충전하고 24시간 경과 후 전단결합강도를 측정하고 Mann-Whitney test와 Kruskal-Wallis test를 사용하여 통계분석 하였다. 결과는 자가 산부식 접착제를 적용한 군은 유치, 영구치 모두에서 total etching system에 비해 낮은 전단 결합강도를 보였다. 자가 산부식 접착제 사용 군내에서 산부식을 추가로 시행하였을 때 유치와 영구치 모두에서 결합강도가 증가하였으며, 10초 이상 산부식을 시행한 경우 결합력의 차이는 없는 것으로 나타났다. 유치와 영구치간 결합력의 차이는 인정되지 않았다. 결론적으로, 자가 산부식 접착제의 법랑질에 대한 전단결합강도는 유치, 영구치 모두에서 10초 이상의 부가적 산부식이 결합력의 증가에 유리하게 작용하는 것으로 나타났다.

• Restorative Dentistry and Endodontics
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• 제28권2호
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• pp.127-133
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• 2003

The object of this study was to compare the microleakage between various composite resin systems of multistep, one-bottle, and self-etching systems using electrical conductivity. After making class V cavities ($4{\times}3{\times}1.5{\;}mm$ around CEJ), they were bulk filled with three kinds of resins of A3. Teeth were storaged in a saline solution for one day, after then, they were finished and polished using Sof-Lex system. Another stress of thermocycling was made for 500 times from $5^{\circ}{\;}to{\;}55^{\circ}C$ with each dwelling time of 10 seconds. Electrical conductivity (microamphere, $\mu\textrm{A}$) was checked four times: before and after cavity preparation, after filing, after thermocycling. One-way ANOVA and 95% Scheffe Post Hoc test was used for checking any statistical difference among groups. Another 95% Paired Samples T-test was also used for estimating any significant difference within group after cavity filling or thermocycling. The results were as follows: 1 Every specimen showed various range of microleakage after filing. There was, however, no difference between composite resin systems. 2. All composite resin systems showed marked increase in microleakage with a thermocycling (p<0.05), there was, however, no difference between composite resin systems. 3. Although there was no significant difference between groups (p=0.078), one-bottle and self-etching systems seemed to be unstable than multistep system. Within the limits of this study, it was concluded that much more consideration should be needed when using thermally unstable one-bottle and self-etching systems that have multi-advantages from simplified step. More studies will be needed to solve these kinds of problems.

• Restorative Dentistry and Endodontics
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• 제29권5호
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• pp.430-438
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• 2004

This study evaluated the influence of application time of self-etching primers on microtensile bond strength (${\mu}$TBS) to dentin using three self-etching primer adhesive systems. Dentin surfaces were exposed from forty-eight human molars. They were conditioned with three self-etching primers (Clearfil SE Bond [SE], Unifil Bond [UF], Tyrian SPE + One Step Plus [TY]) and different primining times (10s, 20s, 30s and 40s). Composite resins were bonded to dentin surfaces and specimens were made. ${\mu}TBS$ was tested and statistically compared using by one-way ANOVA and Tukey's Test. The results of this study presented that priming time for 10s in SE and UF groups and for 30s and 40s in TY group was highly decreased ${\mu}TBS$ to dentin.

• Journal of Magnetics
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• 제15권3호
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• pp.132-137
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• 2010

Plasma etching of $SiO_2$ contact holes was statistically analyzed by a fractional factorial experimental design. The analysis revealed the dependence of the etch rate and DC self-bias voltage on the input factors of the magnetically enhanced reactive ion etching reactor, including gas pressure, magnetic field, and the gas flow rates of $CHF_3$, $CF_4$, and Ar. Empirical models of the DC self-bias voltage and etch rate were obtained. The DC self-bias voltage was found to be determined mainly by the operating pressure and the magnetic field, and the etch rate was related mainly to the pressure and the flow rates of Ar and $CHF_3$.

• 대한치과교정학회지
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• 제40권4호
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• pp.267-275
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• 2010

이번 연구의 목적은 맹출 또는 미맹출된 치아에 교정용 버튼을 부착 후 자가부식 접착제(self-etching adhesive)의 사용 유무에 대한 전단결합강도(shear bond strength)와 탈락모드를 비교하고자 함이다. 각각 84개의 맹출 또는 미맹출된 제3대구치를 사용하였다. 각각 치아의 협측면을 다음의 부착시스템 그룹으로 할당하였다. A, 기존방식: 1, Transbond XT (3M Unitek); 2, Prime & Bond NT (Dentsply/Caulk); 3, Single Bond (3M ESPE); B, 자가부식 접착제; 4, Clearfil SE Bond (Kuraray); 5, Transbond Plus (3M Unitek); 6, Clearfil S3 (Kuraray); 7, G Bond (GC). 부착물의 전단강도와 접착제 잔류지수를 측정하였으며 결과값은 ANOVA와 independent t-test 및 chi-square 검증을 통해 분석되었다. 맹출 또는 미맹출된 치아의 전단결합강도를 비교하였을 때 Clearfil SE와 G Bond에서 유의한 차이가 관찰되었다. Single Bond를 제외한 모든 접착시스템에서 맹출보다는 미맹출 치아면에서 높은 접착강도가 관찰되었다. 기존 접착제를 사용하는 경우 맹출 또는 미맹출 치아에 대한 접착강도에는 차이가 없을 수 있다. 그러나 임상의사는 사용 전에 self-etching system의 종류를 고려할 필요가 있다.

• 대한치과기공학회지
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• 제29권2호
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• pp.141-150
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• 2007

The purpose of this study was to ascertain the bonding durability of self-etching dentin bonding agents to dentin by means of shear bonding strength. Several acid-etching dentin bonding system (ESPE Z100) and self-etching dentin bonding systems (DEN-FIL, GRADIA DIRET) were used. The occlusion surface of human molars were ground flat to expose dentin and treated with the etch bonding system according to manufactures instruction and followed by composite resin application. After 24hours of storage at 37$^{\circ}C$, the shear bonding strength of the specimens was measured in a universal testing machine with a 1mm/min crosshead speed. An one-way analysis of variance and the scheffe test were performed to identify significant differences (p<0.05). The bonded interfacial surfaces and treated dentin surfaces were examined using a SEM. Through the analysis of shear bond strength data and micro-structures of dentin-resin interfaces, following results are obtained. In dentin group, the shear bond strength of DEN-FIL showed statistical superiority in comparison to the other groups and followed by ESPE Z100 and GRADIA DIRECT (p<0.05).

• Restorative Dentistry and Endodontics
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• 제27권3호
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• pp.257-269
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• 2002

Objective : The purpose of this study was to evaluate the resin infiltration into dentin of one-bottle adhesive systems and self-etching primer bonded to Class V cavities using confocal laser scanning microscope(CLSM). Material and Methods : Forty Class V cavities were prepared from freshly extracted caries-free Human teeth. These teeth were divided into two groups based on the presence of cervical abrasion: Group I, cervical abrasion : Group II, wedge-shaped cavity preparation. Resin-dentin interfaces were produced with two one-bottle dentin bonding systems-ONE COAT BOND(OCB; Coltene$^R$) and Syntac$^R$SPrint$^{TM}$(SS; VIVADENT)-, one self-etching priming system-CLEARFIL$^{TM}$ SE BOND (SB : KURARAY)- and one multi-step dentin bonding system-Scotchbond$^{TM}$Multi-Purpose (SBMP, 3M Dental Products)-as control according to manufacturers' instructions. Cavities were restored with Spectrum$^{R}$(Dentsply). Specimens were immersed in saline for 24 hours and sectioned longitudinally with a low-speed diamond disc. The resin-dentin interfaces were microscopically observed using CLSM. The quality of resin-infiltrated dentin layers were evaluated by five dentists using 0~4 scale. Results : Confocal laser scanning microscopal investigations using primer labeled with rhodamine B showed that the penetration of the primer occurred along the cavity margins. Statistical analysis using one-way ANOVA followed by Duncan's Multiple Range test revealed that the primer penetration of the group 2(wedge-shaped cavity preparation) was more effective than group 1(cervical abrasion) and that of the gingival interfaces was more effective than the occlusal interfaces. In the one-bottle dentin bonding systems, the resin penetration score of OCB was compatible to SBMP, but those of SS and self-etching priming system, SB were lower than SBMP.

• Restorative Dentistry and Endodontics
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• 제29권4호
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• pp.353-364
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• 2004

The purpose of this study was to compare and to evaluate the combination use of 5 kinds of dentin adhesive systems and 5 kinds of composite resins using micro-shear bond test. Five adhesive systems (Prime & Bond NT (PBN). Onecoat bond (OC), Excite (EX), Syntac (SY), Clearfil SE bond (CS)) and five composite resins (Spectrum (SP), Synergy Compact (SC), Tetric Ceram (TC), Clearfil AP-X (CA), Z100 (Z1)) were used for this study ($5{\;}{\times}{\;}5{\;}={\;}25group$, n =14/group). The slices of horizontally sectioned human tooth were bonded with each bonding system and each composite resin, and tested by a micro-shear bond strength test. These results were analyzed statistically. The mean micro-shear bond strength of dentin adhesive systems were in order of CS (22.642 MPa), SY (18.368 MPa), EX (14.599 MPa). OC (13.702 MPa). PBN (12.762 MPa). The mean bond strength of self-etching primer system group (CS, SY) in dentin was higher than that of self-priming adhesive system groups (PBN, EX, OC) significantly (P<0.05). The mean bond strength of composite resins was in order of SP (19.008 MPa), CA (17.532 MPa). SC (15.787 MPa), TC (15.068 MPa). Z1 (14.678 MPa). Micro-shear bond strength of SP was stronger than those of other composite resins significantly (P < 0.05). And those of TC and Z1 were weaker than other composite resins significantly (P < 0.05). No difference was found in micro-shear bond strength of composite resin in self-etching primer adhesive system groups (CS, SY) statistically. However, there was significant difference of micro-shear bond strength of composite resin groups in self-priming adhesive systems group (PBN, EX, OC). The combination of composite resin and dentin adhesive system recommended by manufacturer did not represent positive correlation. It didn't seem to be a significant factor.