牙体牙髓牙周病学杂志
牙體牙髓牙週病學雜誌
아체아수아주병학잡지
CHINESE JOURNAL OF CONSERVATIVE DENTISTRY
2014年
8期
455-458,454
,共5页
渗透树脂%人工釉质龋%表面微硬度
滲透樹脂%人工釉質齲%錶麵微硬度
삼투수지%인공유질우%표면미경도
resin infiltration%artificial enamel caries%surface microhardness
目的:观察不同脱矿程度人工釉质龋经渗透树脂治疗后其表面微硬度的提高程度。方法:制备牛牙釉质样本60个,随机分为6组,分别置脱矿液中脱矿10、20、30、40、50、60 d;然后用ICON渗透树脂对各组人工釉质龋病损部位进行处理;分别于脱矿前、脱矿后、渗透树脂后用韦氏微硬度仪检测各组病损表面的微硬度值,用3D激光扫描显微系统观察病损表面的形貌。结果:各组样本脱矿前表面微硬度值基本一致(P>0.05),脱矿后均明显降低(P<0.05);经渗透树脂处理后,病损表面微硬度均显著提高(P<0.05),但低于基线水平(P<0.05),依次为脱矿60 d<50 d<40 d<30 d<20 d<10 d,10、20、30、40 d各组间无显著性差异(P>0.05)外,其他各组间差异均有统计学意义(P<0.05)。抛光后的釉质表面无树脂残留。结论:渗透树脂能提高釉质龋病损表面的微硬度,但不能达到正常釉质的水平;提高程度与病损脱矿程度相关。
目的:觀察不同脫礦程度人工釉質齲經滲透樹脂治療後其錶麵微硬度的提高程度。方法:製備牛牙釉質樣本60箇,隨機分為6組,分彆置脫礦液中脫礦10、20、30、40、50、60 d;然後用ICON滲透樹脂對各組人工釉質齲病損部位進行處理;分彆于脫礦前、脫礦後、滲透樹脂後用韋氏微硬度儀檢測各組病損錶麵的微硬度值,用3D激光掃描顯微繫統觀察病損錶麵的形貌。結果:各組樣本脫礦前錶麵微硬度值基本一緻(P>0.05),脫礦後均明顯降低(P<0.05);經滲透樹脂處理後,病損錶麵微硬度均顯著提高(P<0.05),但低于基線水平(P<0.05),依次為脫礦60 d<50 d<40 d<30 d<20 d<10 d,10、20、30、40 d各組間無顯著性差異(P>0.05)外,其他各組間差異均有統計學意義(P<0.05)。拋光後的釉質錶麵無樹脂殘留。結論:滲透樹脂能提高釉質齲病損錶麵的微硬度,但不能達到正常釉質的水平;提高程度與病損脫礦程度相關。
목적:관찰불동탈광정도인공유질우경삼투수지치료후기표면미경도적제고정도。방법:제비우아유질양본60개,수궤분위6조,분별치탈광액중탈광10、20、30、40、50、60 d;연후용ICON삼투수지대각조인공유질우병손부위진행처리;분별우탈광전、탈광후、삼투수지후용위씨미경도의검측각조병손표면적미경도치,용3D격광소묘현미계통관찰병손표면적형모。결과:각조양본탈광전표면미경도치기본일치(P>0.05),탈광후균명현강저(P<0.05);경삼투수지처리후,병손표면미경도균현저제고(P<0.05),단저우기선수평(P<0.05),의차위탈광60 d<50 d<40 d<30 d<20 d<10 d,10、20、30、40 d각조간무현저성차이(P>0.05)외,기타각조간차이균유통계학의의(P<0.05)。포광후적유질표면무수지잔류。결론:삼투수지능제고유질우병손표면적미경도,단불능체도정상유질적수평;제고정도여병손탈광정도상관。
AIM:To evaluate the effect of resin infiltration treatment on enamel surface microhardness (SMH)of artificial caries lesions.METHODS:60 bovine enamel specimens were divided into 6 groups (n=10)and were demineralized for 10 d,20 d,30 d,50 d and 60 d (group 1,2,3,4,5,and 6)respectively.The caries le-sions were etched with 37%phosphoric acid gel and infiltrated with ICON resin.The SMH of the specimens before and after demineralization,and after resin infiltration was determined by Laser Microscope 3D&Profile Measurement.RE-SULTS:The specimens of all groups exhibited the same baseline level of SMH(P>0.05 ).After demineralization, the SMH of all groups was time-dependently reduced(P<0.05 ).SMH in all groups incteased after resin infiltration and polishing (P<0.05),but not achieved to the baseline.No significant difference in the amount of SMH re-hard-ening was detected between each 2 of group 1,2,3 and 4.However,SMH in groups 5 and 6 was lower than in the other 4 groups.Resin on the caries lesion surface was completely removed by polishing.CONCLUSION:Resin infil-tration can increase the SMH of caries lesions,but can not return to the baseline SMH.The re-hardning of the caries lesion is negtively related to the demineralization.