口腔医学
口腔醫學
구강의학
STOMATOLOGY
2015年
9期
730-733
,共4页
陈健%吴凤鸣%张晓燕%马骞%乔萍丽
陳健%吳鳳鳴%張曉燕%馬鶱%喬萍麗
진건%오봉명%장효연%마건%교평려
纤维桩%树脂粘结剂%固化光源强度%粘结
纖維樁%樹脂粘結劑%固化光源彊度%粘結
섬유장%수지점결제%고화광원강도%점결
fiber post%resin cement%curing light source intensity%bond strength
目的:研究不同光源强度对双固化树脂粘结纤维桩固位力的影响。方法30颗离体前磨牙,截冠,预备根管,根管充填, BISCO Duo - link 双固化粘结剂将BISCO DT light post 纤维桩粘固。按纤维桩粘结时使用的固化光源强度不同分成3组:空白组不使用固化光源;低强度组使用600 MW / cm2 LED 强度固化光源;高强度组使用1200 MW / cm2 LED 强度固化光源。沿垂直纤维桩长轴方向将牙根切成1 mm 薄片,行薄片推出实验,记录推出力量,计算粘结强度。结果粘结强度:空白组<低强度组<高强度组。空白组、高强度组各自不同深度粘结强度无差别;低强度组粘结强度:根尖<根中<根颈。结论使用双固化树脂粘结剂粘结纤维桩时,固化光源强度增加,有利于增强不同深度粘结剂与桩的粘结强度,增加树脂粘结纤维桩的固位力。
目的:研究不同光源彊度對雙固化樹脂粘結纖維樁固位力的影響。方法30顆離體前磨牙,截冠,預備根管,根管充填, BISCO Duo - link 雙固化粘結劑將BISCO DT light post 纖維樁粘固。按纖維樁粘結時使用的固化光源彊度不同分成3組:空白組不使用固化光源;低彊度組使用600 MW / cm2 LED 彊度固化光源;高彊度組使用1200 MW / cm2 LED 彊度固化光源。沿垂直纖維樁長軸方嚮將牙根切成1 mm 薄片,行薄片推齣實驗,記錄推齣力量,計算粘結彊度。結果粘結彊度:空白組<低彊度組<高彊度組。空白組、高彊度組各自不同深度粘結彊度無差彆;低彊度組粘結彊度:根尖<根中<根頸。結論使用雙固化樹脂粘結劑粘結纖維樁時,固化光源彊度增加,有利于增彊不同深度粘結劑與樁的粘結彊度,增加樹脂粘結纖維樁的固位力。
목적:연구불동광원강도대쌍고화수지점결섬유장고위력적영향。방법30과리체전마아,절관,예비근관,근관충전, BISCO Duo - link 쌍고화점결제장BISCO DT light post 섬유장점고。안섬유장점결시사용적고화광원강도불동분성3조:공백조불사용고화광원;저강도조사용600 MW / cm2 LED 강도고화광원;고강도조사용1200 MW / cm2 LED 강도고화광원。연수직섬유장장축방향장아근절성1 mm 박편,행박편추출실험,기록추출역량,계산점결강도。결과점결강도:공백조<저강도조<고강도조。공백조、고강도조각자불동심도점결강도무차별;저강도조점결강도:근첨<근중<근경。결론사용쌍고화수지점결제점결섬유장시,고화광원강도증가,유리우증강불동심도점결제여장적점결강도,증가수지점결섬유장적고위력。
Objective To verify the influence of different light intensities on the bond strength of fiber posts cemented with dual-cured resin cement. Methods 30 crownless human premolars were prepared. Fiber posts were inserted using dual-cured cement and were randomly divided into 3 groups(n = 10):control group:no use of curing light source;low intensity group:the use of 600 MW / cm2 LED curing light intensity;high strength group:the use of 1 200 MW / cm2 LED curing light intensity. After one week,each root was sectioned transversally into three slices (cervical,middle and apical)and the bond strength of each section was determined using a push-out bond strength test. Results The bond strength:blank group < low intensity group < high intensity group. There was no differ-ence in the bond strength from cervical to apical thirds in the blank group and the high intensity group,while in the low intensity group bond strength :cervical > middle > apical. Conclusions When using a dual-cured cement,the bond strength of fiber post was influ-enced by the strength of curing light intensity. With the increase of curing light source intensity,the bond strength of fiber post also in-creased.