天津医药
天津醫藥
천진의약
TIANJIN MEDICAL JOURNAL
2014年
1期
31-34
,共4页
牙修复体%表面粗糙度%牙体预备%水门汀%粘接强度%旋转器械
牙脩複體%錶麵粗糙度%牙體預備%水門汀%粘接彊度%鏇轉器械
아수복체%표면조조도%아체예비%수문정%점접강도%선전기계
dental prosthesis%surface roughness%tooth preparation%cements%adhesive strength%rotary instruments
目的：研究固定修复中预备体表面粗糙度及不同水门汀材料对粘接强度的影响，为临床备牙旋转器械及水门汀的选择提供参考依据。方法制作牙本质试件60个，随机均分为A、B、C 3组，分别采用3种粒度（125、60、28μm）的金刚砂车针进行牙体预备。各组随机抽取2个预备体试件，扫描电镜下行微观形貌观察；剩余18个试件经表面粗糙度测量后均分为3个亚组，分别采用聚羧酸锌水门汀（ZP），玻璃离子水门汀（GI）以及树脂改良型玻璃离子水门汀（RMGI）将钴铬合金金属铸件粘接于预备体表面，测定剪切粘接强度，并记录断裂的类型。结果 A、B、C 3组试件表面粗糙度及粘接强度均依次降低；3种水门汀材料中，RMGI粘接强度最高，ZP与GI粘接强度差异无统计学意义；不同配伍亚组中，A-RMGI亚组粘接强度最高，B-RMGI亚组次之，C-ZP、C-GI亚组最低；表面粗糙度与水门汀种类两因素之间不具有交互作用；A组断裂模式以Ⅰ、Ⅱ型为主，B组各断裂模式分布较为均衡，而C组以Ⅱ、Ⅲ型断裂模式居多。结论预备体表面粗糙度与粘接强度有关；3种水门汀材料中RMGI粘接效果最好；表面粗糙度与水门汀种类间不存在配伍优选情况。
目的：研究固定脩複中預備體錶麵粗糙度及不同水門汀材料對粘接彊度的影響，為臨床備牙鏇轉器械及水門汀的選擇提供參攷依據。方法製作牙本質試件60箇，隨機均分為A、B、C 3組，分彆採用3種粒度（125、60、28μm）的金剛砂車針進行牙體預備。各組隨機抽取2箇預備體試件，掃描電鏡下行微觀形貌觀察；剩餘18箇試件經錶麵粗糙度測量後均分為3箇亞組，分彆採用聚羧痠鋅水門汀（ZP），玻璃離子水門汀（GI）以及樹脂改良型玻璃離子水門汀（RMGI）將鈷鉻閤金金屬鑄件粘接于預備體錶麵，測定剪切粘接彊度，併記錄斷裂的類型。結果 A、B、C 3組試件錶麵粗糙度及粘接彊度均依次降低；3種水門汀材料中，RMGI粘接彊度最高，ZP與GI粘接彊度差異無統計學意義；不同配伍亞組中，A-RMGI亞組粘接彊度最高，B-RMGI亞組次之，C-ZP、C-GI亞組最低；錶麵粗糙度與水門汀種類兩因素之間不具有交互作用；A組斷裂模式以Ⅰ、Ⅱ型為主，B組各斷裂模式分佈較為均衡，而C組以Ⅱ、Ⅲ型斷裂模式居多。結論預備體錶麵粗糙度與粘接彊度有關；3種水門汀材料中RMGI粘接效果最好；錶麵粗糙度與水門汀種類間不存在配伍優選情況。
목적：연구고정수복중예비체표면조조도급불동수문정재료대점접강도적영향，위림상비아선전기계급수문정적선택제공삼고의거。방법제작아본질시건60개，수궤균분위A、B、C 3조，분별채용3충립도（125、60、28μm）적금강사차침진행아체예비。각조수궤추취2개예비체시건，소묘전경하행미관형모관찰；잉여18개시건경표면조조도측량후균분위3개아조，분별채용취최산자수문정（ZP），파리리자수문정（GI）이급수지개량형파리리자수문정（RMGI）장고락합금금속주건점접우예비체표면，측정전절점접강도，병기록단렬적류형。결과 A、B、C 3조시건표면조조도급점접강도균의차강저；3충수문정재료중，RMGI점접강도최고，ZP여GI점접강도차이무통계학의의；불동배오아조중，A-RMGI아조점접강도최고，B-RMGI아조차지，C-ZP、C-GI아조최저；표면조조도여수문정충류량인소지간불구유교호작용；A조단렬모식이Ⅰ、Ⅱ형위주，B조각단렬모식분포교위균형，이C조이Ⅱ、Ⅲ형단렬모식거다。결론예비체표면조조도여점접강도유관；3충수문정재료중RMGI점접효과최호；표면조조도여수문정충류간불존재배오우선정황。
Objective To investigate the influence of tooth preparation surface roughness and different dental ce-ments on adhesive strength, and provide some reference information on the selection of dental rotary instruments and dental cements. Methods Sixty dentin samples were prepared and randomly divided into 3 groups. Samples from group A, B and C were grinded by diamond burs with grit-sizes of 125μm, 60μm and 28μm respectively. Two samples selected randomly from each group were observed under scanning electron microscope (SEM) for the surface microprofile. The remaining 18 samples from each group were evenly divided into 3 subgroups. Each subgroup was teamed with one of 3 dental cements:zinc polycarboxylate cement (ZP), glass ionomer cement (GI) and resin-modified glass ionomer cement (RMGI). Co-Cr alloy casts were cemented onto the dentin samples, and the adhesive strength was tested. Meanwhile, the types of failure were re-corded for each sample. Results The surface roughness of tooth preparation samples showed a downward trend in group A, group B and group C. Among the involved 3 dental cements, RMGI exhibited the highest adhesive strength, and there was no significant difference in the adhesive strength between ZP and GI. Among different combination subgroups, A-RMGI had the highest adhesive strength, B-RMGI run the second place, while C-ZP and C-GI were proved the lowest. However, there was no interaction between the two factors. Furthermore, group A mainly showed failure typesⅠandⅡ, group B evenly showed all the failure types and group C mainly showed failure typesⅡandⅢ. Conclusion The adhesive strength is related to the surface roughness. RMGI exhibits the highest adhesive efficiency. There is no obvious compatibility in particular surface roughness and dental cements.
