中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2014年
3期
166-170
,共5页
李晓静%赵三军%沈丽娟%徐帅%孙佳琦%陈吉华
李曉靜%趙三軍%瀋麗娟%徐帥%孫佳琦%陳吉華
리효정%조삼군%침려연%서수%손가기%진길화
牙科粘固剂%粘固作用%桩核技术
牙科粘固劑%粘固作用%樁覈技術
아과점고제%점고작용%장핵기술
Dental cements%Cementation%Post and core technique
目的 探讨老化对4种水门汀材料与纤维桩粘接性能的影响,以期为临床选择适宜的纤维桩粘接材料提供实验依据.方法 选取216颗拔除1个月以内的单根管人下颌前磨牙,常规根管充填并预备桩道后,选用Fuji Ⅰ(A组)、Fuji Cem(B组)、RelyX Unicem(C组)和RelyX ARC(D组)4种水门汀材料分别粘接纤维桩(每组54颗牙);每组分为3个亚组,分别进行水储存24 h(粘接后即刻)、冷热循环和冷热循环-机械加载处理(每亚组18颗牙).每亚组8颗牙进行界面微渗漏评分,每亚组2颗牙使用扫描电镜观察界面微观形貌,每亚组8颗牙测试拉出强度.结果 粘接后即刻D组拉出强度[(278±26)N]最高,随后依次为C组[(219±12)N]、B组[(104±23)N]、A组[(73±8)N],组间差异均有统计学意义(P<0.05).两种老化处理(冷热循环和冷热循环-机械加载)后A、B组拉出强度均比老化前(粘接后即刻)显著提高(P<0.05),D组拉出强度显著下降(P<0.05).扫描电镜示两种老化处理后D组粘接界面均出现狭窄的裂隙,A、B组粘接界面更致密、均一.两种老化处理后A、B组微渗漏减少,C、D组微渗漏增加.结论 应用树脂类水门汀粘接纤维桩可获得较高的即刻拉出强度,而玻璃离子类水门汀则表现出较好的粘接耐久性.
目的 探討老化對4種水門汀材料與纖維樁粘接性能的影響,以期為臨床選擇適宜的纖維樁粘接材料提供實驗依據.方法 選取216顆拔除1箇月以內的單根管人下頜前磨牙,常規根管充填併預備樁道後,選用Fuji Ⅰ(A組)、Fuji Cem(B組)、RelyX Unicem(C組)和RelyX ARC(D組)4種水門汀材料分彆粘接纖維樁(每組54顆牙);每組分為3箇亞組,分彆進行水儲存24 h(粘接後即刻)、冷熱循環和冷熱循環-機械加載處理(每亞組18顆牙).每亞組8顆牙進行界麵微滲漏評分,每亞組2顆牙使用掃描電鏡觀察界麵微觀形貌,每亞組8顆牙測試拉齣彊度.結果 粘接後即刻D組拉齣彊度[(278±26)N]最高,隨後依次為C組[(219±12)N]、B組[(104±23)N]、A組[(73±8)N],組間差異均有統計學意義(P<0.05).兩種老化處理(冷熱循環和冷熱循環-機械加載)後A、B組拉齣彊度均比老化前(粘接後即刻)顯著提高(P<0.05),D組拉齣彊度顯著下降(P<0.05).掃描電鏡示兩種老化處理後D組粘接界麵均齣現狹窄的裂隙,A、B組粘接界麵更緻密、均一.兩種老化處理後A、B組微滲漏減少,C、D組微滲漏增加.結論 應用樹脂類水門汀粘接纖維樁可穫得較高的即刻拉齣彊度,而玻璃離子類水門汀則錶現齣較好的粘接耐久性.
목적 탐토노화대4충수문정재료여섬유장점접성능적영향,이기위림상선택괄의적섬유장점접재료제공실험의거.방법 선취216과발제1개월이내적단근관인하합전마아,상규근관충전병예비장도후,선용Fuji Ⅰ(A조)、Fuji Cem(B조)、RelyX Unicem(C조)화RelyX ARC(D조)4충수문정재료분별점접섬유장(매조54과아);매조분위3개아조,분별진행수저존24 h(점접후즉각)、랭열순배화랭열순배-궤계가재처리(매아조18과아).매아조8과아진행계면미삼루평분,매아조2과아사용소묘전경관찰계면미관형모,매아조8과아측시랍출강도.결과 점접후즉각D조랍출강도[(278±26)N]최고,수후의차위C조[(219±12)N]、B조[(104±23)N]、A조[(73±8)N],조간차이균유통계학의의(P<0.05).량충노화처리(랭열순배화랭열순배-궤계가재)후A、B조랍출강도균비노화전(점접후즉각)현저제고(P<0.05),D조랍출강도현저하강(P<0.05).소묘전경시량충노화처리후D조점접계면균출현협착적렬극,A、B조점접계면경치밀、균일.량충노화처리후A、B조미삼루감소,C、D조미삼루증가.결론 응용수지류수문정점접섬유장가획득교고적즉각랍출강도,이파리리자류수문정칙표현출교호적점접내구성.
Objective To investigate the effect of four different cements on the bonding effectiveness of root canal dentine and fiber post before and after different treatments.Methods A total of 216 freshly extracted sound single-root-canal mandibular premolars were randomly divided into four groups.After root canal treatment and post space preparation being conducted on the premolars,Fuji Ⅰ,Fuji Cem,RelyX Unicem,RelyX ARC were used respectively to bond fiber posts and were marked with group A,B,C,and D.Microleakage,micromorphology of the bonded interfaces,and pull-out bond strength were evaluated in the immediate group,thermocycling group and thermomechanical loading group.Results In the immediate group,samples in group D showed the highest bond strength [(278 ± 26) N],followed by group C[(219 ±12) N],B[(104 ±23) N] and A[(73 ±8) N].Significant differences were found among all groups (P < 0.05).A significant increase in bond strength was found in group A and B,whereas a decrease tendency was detected in group C and D after different treatments.Scanning electron microscope indicated that some little gaps were observed in group D after treatment,while a more intense bonding interface was found in group A and B.Microleakage scores in group A and B were lower than those in group C and D after aging treatments.Conclusions Resin cement can achieve a better immediate bond strength,while resinmodified resin cement may acquire a better long-term retention.