口腔材料器械杂志
口腔材料器械雜誌
구강재료기계잡지
Chinese Journal of Dental Materials and Devices
2015年
4期
177-180
,共4页
Nd:YAG激光%牙本质%微渗漏
Nd:YAG激光%牙本質%微滲漏
Nd:YAG격광%아본질%미삼루
Nd:YAG laser%Dentin%Microleakage
目的：评价Nd：YAG激光对不同充填材料与牙本质之间边缘微渗漏的影响。方法选用人离体前磨牙36颗，制备V类洞，随机分为激光组和对照组，激光组使用80 rnJ、10 Hz脉冲Nd：YAG激光照射后，分别用全酸蚀粘接树脂、自酸蚀粘接树脂和玻璃离子充填洞型，对照组不使用激光，同样用如前所述的3种材料充填洞型。将所有标本浸泡在2%亚甲基蓝溶液中24 h后，用金刚砂片从颊舌向通过充填物中央纵向切开牙体，显微镜下观察龈壁染料渗透的深度。采用SAS8.0软件对数据进行统计学处理。结果经Nd：YAG激光照射后尽管3种材料与牙本质之间微渗漏程度均有降低趋势，但只有玻璃离子组激光照射后较未照射组微渗漏降低具有统计学意义(P<0.05)。结论脉冲Nd：YAG激光照射牙本质壁，在一定程度上可能会减少玻璃离子充填材料与洞壁的微渗漏。
目的：評價Nd：YAG激光對不同充填材料與牙本質之間邊緣微滲漏的影響。方法選用人離體前磨牙36顆，製備V類洞，隨機分為激光組和對照組，激光組使用80 rnJ、10 Hz脈遲Nd：YAG激光照射後，分彆用全痠蝕粘接樹脂、自痠蝕粘接樹脂和玻璃離子充填洞型，對照組不使用激光，同樣用如前所述的3種材料充填洞型。將所有標本浸泡在2%亞甲基藍溶液中24 h後，用金剛砂片從頰舌嚮通過充填物中央縱嚮切開牙體，顯微鏡下觀察齦壁染料滲透的深度。採用SAS8.0軟件對數據進行統計學處理。結果經Nd：YAG激光照射後儘管3種材料與牙本質之間微滲漏程度均有降低趨勢，但隻有玻璃離子組激光照射後較未照射組微滲漏降低具有統計學意義(P<0.05)。結論脈遲Nd：YAG激光照射牙本質壁，在一定程度上可能會減少玻璃離子充填材料與洞壁的微滲漏。
목적：평개Nd：YAG격광대불동충전재료여아본질지간변연미삼루적영향。방법선용인리체전마아36과，제비V류동，수궤분위격광조화대조조，격광조사용80 rnJ、10 Hz맥충Nd：YAG격광조사후，분별용전산식점접수지、자산식점접수지화파리리자충전동형，대조조불사용격광，동양용여전소술적3충재료충전동형。장소유표본침포재2%아갑기람용액중24 h후，용금강사편종협설향통과충전물중앙종향절개아체，현미경하관찰간벽염료삼투적심도。채용SAS8.0연건대수거진행통계학처리。결과경Nd：YAG격광조사후진관3충재료여아본질지간미삼루정도균유강저추세，단지유파리리자조격광조사후교미조사조미삼루강저구유통계학의의(P<0.05)。결론맥충Nd：YAG격광조사아본질벽，재일정정도상가능회감소파리리자충전재료여동벽적미삼루。
Objective The purpose of this study was to evaluate the effects of pulsed Nd:YAG laser on the microleakage of different filling materials at the dentin restoration margin. Methods Thirty-six extracted premolar teeth were prepared for class V cavity and randomly divided into two groups:the laser group and the control group. Teeth in the laser group were processed with pulse Nd:YAG laser (0.8W,10HZ). Then the teeth were filled with total-etch bond system and composite resin, self-etch bond system and composite resin,and glass ionomer respectively. Teeth in the control group without Nd:YAG laser were also filled with the same filling mate-rials. All samples were immersed in 2%Toluidine blue solution for 24h. Specimens were then sliced longitudinally and evaluated under microscope for the extent of dye penetration. All statistical analysis was performed using SAS 8.0 software package.Result Our results indicated that the level of microleakage of laser-treated cavities which filled with three kinds of materials was more obviously decreased than that of untreated cavities, but only the level of microleakage of glass ionomer filled cavities after using Nd:YAG lase was less than that of untreated cavities (P<0.05) . Conclusion The short pulsed Nd:YAG laser appeared to be able to reduce microleakage between some filling materials and dentin.
