中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2013年
3期
165-169
,共5页
刘思颖%王亚珂%裴丹丹%黄翠%刘甜
劉思穎%王亞珂%裴丹丹%黃翠%劉甜
류사영%왕아가%배단단%황취%류첨
牙本质过敏%牙本质脱敏剂%牙本质粘结剂%拉伸强度
牙本質過敏%牙本質脫敏劑%牙本質粘結劑%拉伸彊度
아본질과민%아본질탈민제%아본질점결제%랍신강도
Dentin sensitivity%Dentin desensitizing agents%Dentin-bonding agents%Tensile strength
目的 研究含8％精氨酸-碳酸钙的脱敏抛光膏对两种自酸蚀粘接剂粘接强度的影响,以期为临床提供参考.方法 将36颗离体前磨牙垂直于牙体长轴完全去除(牙合)面牙釉质,采用随机数字表法随机分为3组(每组12颗):空白对照组不进行处理,抛光粉组用浮石粉抛光牙本质面,脱敏抛光膏组用含8％精氨酸-碳酸钙的脱敏抛光膏抛光牙本质面.每组样本牙各采用随机数字表法随机分为两个亚组(每亚组6颗),分别使用两种自酸蚀粘接剂(A:G-Bond,含功能性单体；B:Fl-BondⅡ)进行粘接以及树脂修复.光照固化后将样本牙置于37℃双蒸水中24 h.冷热循环前及经5000次冷热循环后(每亚组冷热循环前后各制备15个试件),分别检测拉力峰值,计算粘接强度,并进行双因素方差分析.扫描电镜评价各组牙本质小管的封闭情况,并观察自酸蚀粘接剂处理后的牙本质面.结果 对于粘接剂A,冷热循环前脱敏抛光膏组粘接强度[(46.88±7.83) MPa]与空白对照组[(38.19 ±4.42) MPa]、抛光粉组[(36.47±4.72) MPa]的差异均有统计学意义(P＜0.05)；冷热循环后脱敏抛光膏组粘接强度[(32.02±8.77) MPa]与空白对照组[(34.38±6.39) MPa]、抛光粉组[(32.22±5.25)MPa]的差异均无统计学意义(P＞0.05).对于粘接剂B,无论冷热循环前还是冷热循环后脱敏抛光膏组粘接强度[分别为(31.53±4.86)和(24.25±3.67) MPa]与空白对照组[分别为(30.34±5.42)和(25.63±5.93) MPa]、抛光粉组[分别为(29.72±5.16)和(26.72±6.17) MPa]的差异均无统计学意义(P＞0.05).扫描电镜下可见经脱敏抛光膏处理后,牙本质小管口被有效封闭.脱敏抛光膏联合自酸蚀粘接剂处理后牙本质小管口可重新打开,使用粘接剂A的管间牙本质表面可见均匀分布的絮状沉积物.结论 含8％精氨酸-碳酸钙的脱敏抛光膏与自酸蚀粘接剂联合应用时,对粘接强度无不利影响,可在临床操作中联合应用.
目的 研究含8％精氨痠-碳痠鈣的脫敏拋光膏對兩種自痠蝕粘接劑粘接彊度的影響,以期為臨床提供參攷.方法 將36顆離體前磨牙垂直于牙體長軸完全去除(牙閤)麵牙釉質,採用隨機數字錶法隨機分為3組(每組12顆):空白對照組不進行處理,拋光粉組用浮石粉拋光牙本質麵,脫敏拋光膏組用含8％精氨痠-碳痠鈣的脫敏拋光膏拋光牙本質麵.每組樣本牙各採用隨機數字錶法隨機分為兩箇亞組(每亞組6顆),分彆使用兩種自痠蝕粘接劑(A:G-Bond,含功能性單體；B:Fl-BondⅡ)進行粘接以及樹脂脩複.光照固化後將樣本牙置于37℃雙蒸水中24 h.冷熱循環前及經5000次冷熱循環後(每亞組冷熱循環前後各製備15箇試件),分彆檢測拉力峰值,計算粘接彊度,併進行雙因素方差分析.掃描電鏡評價各組牙本質小管的封閉情況,併觀察自痠蝕粘接劑處理後的牙本質麵.結果 對于粘接劑A,冷熱循環前脫敏拋光膏組粘接彊度[(46.88±7.83) MPa]與空白對照組[(38.19 ±4.42) MPa]、拋光粉組[(36.47±4.72) MPa]的差異均有統計學意義(P＜0.05)；冷熱循環後脫敏拋光膏組粘接彊度[(32.02±8.77) MPa]與空白對照組[(34.38±6.39) MPa]、拋光粉組[(32.22±5.25)MPa]的差異均無統計學意義(P＞0.05).對于粘接劑B,無論冷熱循環前還是冷熱循環後脫敏拋光膏組粘接彊度[分彆為(31.53±4.86)和(24.25±3.67) MPa]與空白對照組[分彆為(30.34±5.42)和(25.63±5.93) MPa]、拋光粉組[分彆為(29.72±5.16)和(26.72±6.17) MPa]的差異均無統計學意義(P＞0.05).掃描電鏡下可見經脫敏拋光膏處理後,牙本質小管口被有效封閉.脫敏拋光膏聯閤自痠蝕粘接劑處理後牙本質小管口可重新打開,使用粘接劑A的管間牙本質錶麵可見均勻分佈的絮狀沉積物.結論 含8％精氨痠-碳痠鈣的脫敏拋光膏與自痠蝕粘接劑聯閤應用時,對粘接彊度無不利影響,可在臨床操作中聯閤應用.
목적 연구함8％정안산-탄산개적탈민포광고대량충자산식점접제점접강도적영향,이기위림상제공삼고.방법 장36과리체전마아수직우아체장축완전거제(아합)면아유질,채용수궤수자표법수궤분위3조(매조12과):공백대조조불진행처리,포광분조용부석분포광아본질면,탈민포광고조용함8％정안산-탄산개적탈민포광고포광아본질면.매조양본아각채용수궤수자표법수궤분위량개아조(매아조6과),분별사용량충자산식점접제(A:G-Bond,함공능성단체；B:Fl-BondⅡ)진행점접이급수지수복.광조고화후장양본아치우37℃쌍증수중24 h.랭열순배전급경5000차랭열순배후(매아조랭열순배전후각제비15개시건),분별검측랍력봉치,계산점접강도,병진행쌍인소방차분석.소묘전경평개각조아본질소관적봉폐정황,병관찰자산식점접제처리후적아본질면.결과 대우점접제A,랭열순배전탈민포광고조점접강도[(46.88±7.83) MPa]여공백대조조[(38.19 ±4.42) MPa]、포광분조[(36.47±4.72) MPa]적차이균유통계학의의(P＜0.05)；랭열순배후탈민포광고조점접강도[(32.02±8.77) MPa]여공백대조조[(34.38±6.39) MPa]、포광분조[(32.22±5.25)MPa]적차이균무통계학의의(P＞0.05).대우점접제B,무론랭열순배전환시랭열순배후탈민포광고조점접강도[분별위(31.53±4.86)화(24.25±3.67) MPa]여공백대조조[분별위(30.34±5.42)화(25.63±5.93) MPa]、포광분조[분별위(29.72±5.16)화(26.72±6.17) MPa]적차이균무통계학의의(P＞0.05).소묘전경하가견경탈민포광고처리후,아본질소관구피유효봉폐.탈민포광고연합자산식점접제처리후아본질소관구가중신타개,사용점접제A적관간아본질표면가견균균분포적서상침적물.결론 함8％정안산-탄산개적탈민포광고여자산식점접제연합응용시,대점접강도무불리영향,가재림상조작중연합응용.
Objective To evaluate the effect of an 8％ arginine-CaCO3 containing desensitizing polishing paste on bonding strength of two self-etching adhesives to dentin.Methods Thirty-six intact human premolars extracted for orthodontic reasons were collected within 1 month after extraction and randomly assigned into three groups using a table of random numbers (n =12): specimens without any treatment served as control.In the polishing powder group specimens were polished with a slurry of pumice,and in the desensitizing polishing paste group dentin surfaces of the sample teeth were treated with 8％ arginine-CaCO3 containing desensitizing polishing paste.Then each group was divided into two sub-groups using a table of random numbers in order to evaluate the bonding strength of two self-etching adhesive agents (G-Bond,GC; Fl-Bond Ⅱ,Shofu).Microtensile bond strength test was conducted immediately and after 5000 thermocycling (n =15).Scanning electron microscope (SEM) was used to evaluate the occluding effect of the desensitizing polishing paste.Results In the prethermocycling stage,there were no significant differences in Fl-Bond Ⅱ bonding strength among the three groups [control: (30.34 ± 5.42) MPa,polishing powder group: (29.72 ± 5.16) MPa,desensitizing polishing paste group: (31.53 ± 4.86) MPa] (P ＞ 0.05).However there were significant differences among the three groups in G-Bond bonding strength [control: (38.19 ±4.42) MPa,polishing powder group: (36.47 ± 4.72) MPa,desensitizing polishing paste group: (46.88 ±7.83) MPa] (P ＜0.05).After thermocycling precess,there were no significant differences in bonding strenght among the three groups in both G-Bond groups and Fl-Bond Ⅱ groups.SEM observation showed that the desensitizing polishing paste could occlude open dentinal tubules effectively,and the application of self-etching adhesives could re-open the dentinal tubular orifices.An even layer can be seen on the dentin surface treated with self-etching adhesive containing functional monomers.Conclusions The 8％ arginine-CaCO3 containing desensitizing polishing paste could effectively occlude dentinal tubules,thus may have potential benefits in preventing post-operative sensitivity.Additionally,it had no adverse effect on bonding strength of self-etching adhesives to dentin.
