CAJ | 학술논문

目的：评价乙二胺四乙酸（EDTA）和次氯酸钠（NaClO）对自粘接树脂水门汀与牙本质间粘接强度的影响。方法选择新鲜无龋、无裂纹的人离体前磨牙27颗，去除颊侧釉质，暴露浅层牙本质，随机分为对照组（A组）、EDTA组（B组）和NaClO组（C组）。分别选用蒸馏水、3%EDTA溶液和1%NaClO溶液处理牙本质表面后与自粘接树脂水门汀RelyX?Unicem进行粘接，将其中24个试件置于37?℃生理盐水中浸泡24?h后测定剪切强度，采用SPSS?17.0统计学软件对数据进行统计分析，在扫描电镜（SEM）和体视显微镜下分别观察粘接界面及断裂模式。结果 A组与B组的剪切强度分别为（8.55±0.63）?MPa和（8.47±0.56）?MPa，二者间差异无统计学意义（P>0.05）；C组的剪切强度为（12.97±0.59）?MPa，与A组和B组间差异均有统计学意义（P<0.05）。SEM下观察可见，C组自粘接树脂水门汀RelyX?Unicem与牙本质间结合紧密，但均未见树脂突，而A组与B组粘接界面均不理想。体视显微镜下观察可见，A组与B组试件破坏模式以内聚破坏为主，C组试件全部为内聚破坏。结论1%NaClO处理牙本质可以提高自粘接树脂水门汀RelyX?Unicem与牙本质之间的粘接强度，3%EDTA处理对提高自粘接树脂水门汀RelyX?Unicem与牙本质之间的粘接强度无影响。
목적：평개을이알사을산（EDTA）화차록산납（NaClO）대자점접수지수문정여아본질간점접강도적영향。방법선택신선무우、무렬문적인리체전마아27과，거제협측유질，폭로천층아본질，수궤분위대조조（A조）、EDTA조（B조）화NaClO조（C조）。분별선용증류수、3%EDTA용액화1%NaClO용액처리아본질표면후여자점접수지수문정RelyX?Unicem진행점접，장기중24개시건치우37?℃생리염수중침포24?h후측정전절강도，채용SPSS?17.0통계학연건대수거진행통계분석，재소묘전경（SEM）화체시현미경하분별관찰점접계면급단렬모식。결과 A조여B조적전절강도분별위（8.55±0.63）?MPa화（8.47±0.56）?MPa，이자간차이무통계학의의（P>0.05）；C조적전절강도위（12.97±0.59）?MPa，여A조화B조간차이균유통계학의의（P<0.05）。SEM하관찰가견，C조자점접수지수문정RelyX?Unicem여아본질간결합긴밀，단균미견수지돌，이A조여B조점접계면균불이상。체시현미경하관찰가견，A조여B조시건파배모식이내취파배위주，C조시건전부위내취파배。결론1%NaClO처리아본질가이제고자점접수지수문정RelyX?Unicem여아본질지간적점접강도，3%EDTA처리대제고자점접수지수문정RelyX?Unicem여아본질지간적점접강도무영향。
ObjectiveThis?study?aims?to?evaluate?the?bond?strength?of?a?self-adhesive?resin?cement?to?dentin?by?ethylene-diamine?tetraacetic?acid?(EDTA)?and?NaClO.?Methods???Twenty-seven?freshly?extracted?non-carious?human?premolars?were?prepared?to?expose?the?buccal?dentin?and?randomly?divided?into?three?groups:?control?group?(A?group),?EDTA?group?(B?group)?and?NaClO?group?(C?group).?All?teeth?were?bonded?to?dentin?using?a?self-adhesive?resin?cement?after?the?teeth?in?the?A?group?were?processed?with?distilled?water.?The?B?and?C?group?were?processed?with?3%EDTA?and?1%NaClO,?respectively.?After?24?hours?at?37?℃?water,?the?shear?bond?strengths?of?the?twenty-four?specimens?were?measured.?All?statistical?analysis?was?performed?using?SPSS?17.0?software?package.?Each?fractured?specimen?was?examined?under?dental?microscope.?Three?new?specimens?were?cut,?and?the?morphologies?of?the?cement-dentin?interface?were?observed?under?scanning?electron?microscope?(SEM).?Results???The?shear?bond?strength?in?the?A?group,?B?group?and?C?group?was?(8.55±0.63),??(8.47±0.56)?and?(12.97± 0.59)?MPa,?respectively.?The?difference?between?A?group?and?B?group?was?no?statistically?significant?(P>0.05),?whereas?the?difference?between?C?group?and?B?group?(or?A?group)?was?statistically?significant?(P<0.05).?SEM?observation?of?the?cement-dentin?interface?in?the?C?group?showed?good?adaptation,?but?resin?tags?were?not?observed.?The?other?two?groups?showed?poor?bonding?interface.?Most?of?the?fractured?adhesive?dentin?surfaces?exhibited?cohesive?failure?in?the?A?group?and?B?group.?All?the?fractured?adhesive?dentin?surfaces?exhibited?cohesive?failure?in?the?C?group.?Conclusion???1%?NaClO?can?increase?the?bond?strength?of?self-adhesive?resin?cement?to?dentin,?but?3%EDTA?has?no?effect.