CAJ | 학술논문

目的：比较不同粉液比例改变对树脂加强型玻璃离子粘接剂托槽粘接效果的影响。方法将140颗离体人上颌前磨牙随机分为7组,每组20颗。将树脂加强型玻璃离子粘接剂粉剂改变范围设置成(-30%~30%),具体分组如下：对照组、A组(+30%)、B组(+23%)、C组(+17%)、D组(-17%)、E组(-23%)、F组(-30%)。每组牙齿经过牙面处理后用不同粉液比例树脂加强型玻璃离子粘接剂进行托槽粘接。记录粘接24 h的抗剪切强度和粘接残留指数,用SPSS 19.0对实验结果进行统计分析。结果 A~E组的抗剪切强度与对照组相比差异均无统计学意义(P>0.05),但降低30%粉剂比例的F组的抗剪切强度(5.71±1.55) MPa比对照组(7.55±1.20) MPa降低,且两者差异有统计学意义(P=0.017),F组具有较低的粘接残留量。结论树脂加强型玻璃离子有较宽的临床使用范围,增加粉剂比例对树脂加强型玻璃离子粘接剂托槽粘接强度无明显影响,但降低30%粉剂比例则会降低其粘接强度。
목적：비교불동분액비례개변대수지가강형파리리자점접제탁조점접효과적영향。방법장140과리체인상합전마아수궤분위7조,매조20과。장수지가강형파리리자점접제분제개변범위설치성(-30%~30%),구체분조여하：대조조、A조(+30%)、B조(+23%)、C조(+17%)、D조(-17%)、E조(-23%)、F조(-30%)。매조아치경과아면처리후용불동분액비례수지가강형파리리자점접제진행탁조점접。기록점접24 h적항전절강도화점접잔류지수,용SPSS 19.0대실험결과진행통계분석。결과 A~E조적항전절강도여대조조상비차이균무통계학의의(P>0.05),단강저30%분제비례적F조적항전절강도(5.71±1.55) MPa비대조조(7.55±1.20) MPa강저,차량자차이유통계학의의(P=0.017),F조구유교저적점접잔류량。결론수지가강형파리리자유교관적림상사용범위,증가분제비례대수지가강형파리리자점접제탁조점접강도무명현영향,단강저30%분제비례칙회강저기점접강도。
Objective To investigate the influence of powder/liquid ratio variation on brackets bonding of resin-modified glass ionomer cement (RMGIC). Methods A total of 140 mandibular premolars were randomly divided into seven groups: control group, group A (+30%), group B (+23%), group C (+17%), group D (-17%), group E (-23%), group F (-30%), according to the powder/liquid ratio, with 20 teeth in each group. Edgewise brackets were bonded with RMGIC on the teeth with different powder/liquid ratio. Shear bond strength were detected on teeth after thermocycling experiment, and the adhesive remnant index were recorded with statistical analysis. Results There was no statistical difference in shear bond strength (SBS) between group A-E and control group (P>0.05). The SBS of group F (5.713 ± 1.55) MPa was significantly lower than that in other groups as well as the content of residual adhesives (P=0.017). Conclusions RMGIC has a wide range of clinical application, increasing powder/liquid ratio has no influence of bonding strength of RMGIC. On the contrary, decreasing 30%powder will lower the bonding strength.