超聲磨削對(duì)氧化鋯表面性能及樹(shù)脂粘接強(qiáng)度的影響
發(fā)布時(shí)間：2018-08-22 20:50
【摘要】：隨著人們對(duì)口腔修復(fù)體的美觀和安全性要求日益提高,全瓷材料愈受歡迎,CAD/CAM加工氧化鋯陶瓷的應(yīng)用也越來(lái)越普遍。目前主要的氧化鋯陶瓷制作工藝需要二次燒結(jié),即將預(yù)燒結(jié)氧化鋯瓷塊經(jīng)CAD/CAM放大切削加工,再高溫?zé)Y(jié)收縮為致密氧化鋯修復(fù)體。經(jīng)過(guò)多道工序,修復(fù)體加工精度難以保證,機(jī)械性能也有所下降。另外一種方法是對(duì)結(jié)晶完成的氧化鋯瓷塊進(jìn)行磨削加工,優(yōu)點(diǎn)是加工完成的修復(fù)體有較高精度和機(jī)械強(qiáng)度。由于完全燒結(jié)的氧化鋯質(zhì)地堅(jiān)硬,傳統(tǒng)的計(jì)算機(jī)輔助磨削加工方式易導(dǎo)致刀具損耗和修復(fù)體邊緣碎裂。超聲輔助磨削加工技術(shù)與傳統(tǒng)磨削方式相比具有高效率、高精度、加工工具低損傷等優(yōu)點(diǎn),是一種有發(fā)展?jié)摿Φ目谇谎趸喬沾杉庸し椒�。研究超聲磨削�?duì)氧化鋯表面性能及樹(shù)脂粘接強(qiáng)度的影響很有必要。[目的]本研究旨在對(duì)比不同處理方式后氧化鋯試件的表面性能(表面粗糙度、微觀形貌),總結(jié)超聲磨削對(duì)氧化鋯表面性能的特殊影響;通過(guò)不同處理方式后氧化鋯試件與樹(shù)脂粘接劑的抗剪切力檢測(cè)實(shí)驗(yàn),探究超聲輔助磨削對(duì)氧化鋯粘接性能的影響。[方法]慢速切割機(jī)將InCorisTZI可切削氧化鋯瓷塊切割為55片,放入Ceramill Therm高溫?zé)Y(jié)爐燒結(jié)成氧化鋯瓷片。依次用280#、400#、600#SiC砂紙將氧化鋯瓷片表面研磨光滑后,隨機(jī)分為5組:空白對(duì)照(A);噴砂處理組(B):50μm粒徑Al2O3顆粒噴砂處理;普通磨削組(C、D):分別用普通粒徑、小粒徑的金剛石刀具在超聲振動(dòng)切削加工中心進(jìn)行普通磨削;超聲磨削組(E):用超聲振動(dòng)切削加工中心進(jìn)行超聲輔助磨削。所有的瓷片經(jīng)超聲清洗后室溫晾干。使用便攜式粗糙度儀對(duì)各組瓷片表面測(cè)量算術(shù)平均粗糙度(Ra)、微觀不平度十點(diǎn)高度(Rz),并記錄二維輪廓圖像。每組取1片氧化鋯瓷片用掃描電子顯微鏡觀察各組瓷片的表面微觀形貌,比較C、E兩組的邊緣碎裂情況。每組取用10片氧化鋯瓷片,在限定區(qū)域均勻涂布PanaviaF2.0粘接劑,將預(yù)制的樹(shù)脂塊放置其上,持續(xù)輕壓并LED燈光固化3分鐘,室溫放置30分鐘。制作完成的試件置于去離子水中,放于37℃恒溫保存24小時(shí)。將各組的試件粘于剪切力實(shí)驗(yàn)專用的的圓柱形基座上,用萬(wàn)能試驗(yàn)機(jī)測(cè)試其剪切力,計(jì)算得出剪切粘接強(qiáng)度。剪切試驗(yàn)后在體視顯微鏡下觀察各組試件的斷裂模式。使用SPSS18.0軟件,對(duì)各組氧化鋯表面粗糙度、剪切粘接強(qiáng)度進(jìn)行方差齊性分析及SNK法比較均值,以p0.05為有統(tǒng)計(jì)學(xué)差異。[結(jié)果]1.不同表面處理對(duì)氧化鋯輪廓算數(shù)平均偏差(Ra)有顯著影響:噴砂處理組(B組)、普通磨削組(標(biāo)準(zhǔn)粒徑,C組)、超聲磨削組(E組)Ra值最高,且三者之間無(wú)顯著差別(p0.05),普通磨削組(小粒徑,D組)Ra值次之(p0.05),空白對(duì)照組(A組)Ra值最低(p0.05)。不同表面處理對(duì)氧化鋯微觀不平度十點(diǎn)高度(Rz)有顯著影響:噴砂處理組(B組)、普通磨削組(標(biāo)準(zhǔn)粒徑,C組)、超聲磨削組(E組)三組均顯著高于其他兩組(p0.05),且其中噴砂處理組(B組)顯著高于普通磨削組(標(biāo)準(zhǔn)粒徑,C組),而噴砂處理組(B組)與超聲磨削組(E組)無(wú)顯著差別(p0.05),普通磨削組(標(biāo)準(zhǔn)粒徑,C組)與超聲磨削組(E組)無(wú)顯著差別(p0.05)。普通磨削組(小粒徑,D組)Rz值位列第四(p0.05),空白對(duì)照組(A組)最低(p0.05)。2.二維輪廓圖像分析可見(jiàn):空白對(duì)照組(A組)氧化鋯瓷片表面較為平滑;噴砂處理組(B組)的表面形成均勻無(wú)規(guī)律的凹凸;普通磨削組(C、D組)的輪廓相對(duì)規(guī)律;超聲磨削(E組)處理后的表面最為規(guī)則:相鄰的輪廓峰/輪廓谷外形近似,排列整齊。3.掃描電子顯微鏡下觀察各實(shí)驗(yàn)組表面形貌:空白對(duì)照組(A組)表面光滑,伴有少量淺劃痕;噴砂處理組(B組)呈現(xiàn)均勻的不規(guī)則凹凸表面,棱角分明,偶見(jiàn)較粗、較深的短溝;普通磨削組(C、D組)表面為平行緊密分布的溝壑,較空白對(duì)照組深,噴砂處理組淺;超聲磨削組(E組)表面呈現(xiàn)為交錯(cuò)的溝壑,粗糙不平。比較超聲磨削(E組)與普通磨削(標(biāo)準(zhǔn)粒徑,C組)的氧化鋯瓷片邊緣碎裂情況發(fā)現(xiàn):超聲磨削后氧化鋯邊緣的相對(duì)完整,僅見(jiàn)細(xì)碎的微小缺口,無(wú)明顯的材料碎裂;普通磨削可見(jiàn)氧化鋯邊緣大小形態(tài)不規(guī)則的缺口,邊緣質(zhì)量較差。4.剪切實(shí)驗(yàn)后發(fā)現(xiàn)實(shí)驗(yàn)中所有的斷裂模式均為氧化鋯與復(fù)合樹(shù)脂粘接劑的界面斷裂。分析可知不同表面處理對(duì)氧化鋯粘接強(qiáng)度有顯著影響:噴砂處理組(B組)的粘接強(qiáng)度最大,與其他四組有顯著差異(p0.05);空白對(duì)照組(A組)與兩個(gè)普通磨削組(C、D組)強(qiáng)度次之,且三組間粘接強(qiáng)度無(wú)顯著差異(p0.05);超聲磨削組(E組)的粘接強(qiáng)度最低,與其他四組有顯著差異(p0.05)。[結(jié)論]1.與空白對(duì)照組相比,噴砂處理、普通磨削、超聲輔助磨削均可顯著提高氧化鋯陶瓷表面粗糙度;使用不同粒徑的金剛石刀具對(duì)氧化鋯表面粗糙度影響不同,粒徑大的刀具獲得粗糙度更大。2.本實(shí)驗(yàn)中其他方法相比,噴砂能顯著提高氧化鋯與樹(shù)脂粘接劑的剪切粘接強(qiáng)度;超聲輔助磨削后的氧化鋯與樹(shù)脂粘接劑的剪切粘接強(qiáng)度較低。建議超聲輔助磨削后結(jié)合噴砂來(lái)獲得理想的粘接效果。普通磨削不能提高氧化鋯的樹(shù)脂粘接強(qiáng)度,臨床仍需配合其他表面處理方法提高氧化鋯與樹(shù)脂粘接劑的粘接強(qiáng)度。
[Abstract]:With the increasing demand for aesthetics and safety of dental restorations, all-ceramic materials are becoming more and more popular, and the application of CAD/CAM in processing zirconia ceramics is becoming more and more popular. Dense zirconia restorations. After a number of procedures, the restorations processing accuracy is difficult to guarantee, mechanical properties have also declined. Another method is to finish the crystallization of zirconia ceramic grinding, the advantages of the finished restorations are high precision and mechanical strength. Because the fully sintered zirconia is hard, the traditional calculation. Ultrasound-assisted grinding is a promising method for processing oral zirconia ceramics because of its high efficiency, high precision and low tool damage compared with traditional grinding methods. [Objective] The purpose of this study is to compare the surface properties (surface roughness, micro-morphology) of zirconia specimens after different treatment methods, summarize the special effects of ultrasonic grinding on the surface properties of zirconia, and explore the shear resistance test of zirconia specimens and resin adhesive after different treatment methods. [Methods] InCoris TZI machinable zirconia ceramic pieces were cut into 55 pieces by slow cutting machine and sintered into zirconia ceramic pieces by Ceramill Therm high temperature sintering furnace. Treatment group (B): 50 micron Al2O3 particle sandblasting treatment; Ordinary grinding group (C, D): Ordinary grinding with ordinary diameter, small diameter diamond tools in ultrasonic vibration machining center for ordinary grinding; Ultrasonic grinding group (E): ultrasonic vibration machining center for ultrasonic assisted grinding. All porcelain pieces after ultrasonic cleaning room temperature drying. The arithmetic mean roughness (Ra), micro-irregularity 10-point height (Rz) and two-dimensional contour images were measured by a portable roughness tester. One piece of zirconia porcelain was taken from each group and the surface micro-morphology of each group was observed by scanning electron microscope. The edge fragmentation of C and E groups was compared. Panavia F2.0 adhesive was evenly coated in the limited area. The prefabricated resin block was placed on it. The resin block was pressed lightly for 3 minutes and cured by LED light for 30 minutes at room temperature. After shear test, the fracture mode of each group was observed under stereomicroscope. The surface roughness and shear bond strength of each group of zirconia were analyzed by SPSS18.0 software, and the mean values of SNK were compared by variance homogeneity analysis and SNK method. The results showed that the average deviation (Ra) of zirconia contour was significantly affected by physical parameters: the highest Ra value was found in the sandblasting group (group B), the common grinding group (standard size, group C), the ultrasonic grinding group (group E), and there was no significant difference among the three groups (p0.05), the second was in the common grinding group (small size, group D), and the lowest was in the blank control group (group A). Zirconia micro-irregularity 10-point height (Rz) has a significant impact: sandblasting treatment group (group B), ordinary grinding group (standard size, group C), ultrasonic grinding group (group E) three groups were significantly higher than the other two groups (p0.05), and the sandblasting treatment group (group B) was significantly higher than the ordinary grinding group (standard size, group C), while the sandblasting treatment group (group B) and ultrasonic grinding group (group E). There was no significant difference (p0.05). There was no significant difference (p0.05) between the normal grinding group (standard size, group C) and the ultrasonic grinding group (group E). The Rz value of the ordinary grinding group (small size, group D) ranked fourth (p0.05), while that of the blank control group (group A) was the lowest (p0.05). 2-D contour image analysis showed that the surface of zirconia ceramic in the blank control group (group A) was smoother. (group B) surface formed uniform irregular concave-convex; common grinding group (group C, D) profile of the relative law; ultrasonic grinding (group E) after the surface of the most regular: adjacent contour peak / contour valley shape approximate, neatly arranged. 3. Scanning electron microscopy observation of the surface morphology of each experimental group: blank control group (group A) surface smooth, with a small number of. Shallow scratches; abrasive blasting treatment group (group B) showed uniform irregular concave-convex surface, sharp edges and corners, occasionally thick, deep grooves; ordinary grinding group (group C, D) surface was parallel and compact distribution of grooves, deeper than the blank control group, sandblasting treatment group shallow; ultrasonic grinding group (group E) surface showed staggered grooves, rough and uneven. The results show that the edge of zirconia ceramics grinded by ultrasonic grinding is relatively intact, and there is no obvious material fragmentation; the edge of zirconia ceramics grinded by conventional grinding is irregular in size and shape, and the edge quality is poor. 4. The results show that different surface treatments have a significant effect on the bond strength of zirconia: the bond strength of sandblasting group (group B) is the highest, and there is a significant difference with the other four groups (p0.05); the strength of blank control group (group A) and two ordinary grinding groups (group C, D) is the second, and the bond strength between the three groups is the highest. There was no significant difference in bond strength (p0.05); ultrasonic grinding group (E group) had the lowest bond strength, which was significantly different from the other four groups (p0.05). [Conclusion] 1. Compared with the blank control group, the surface roughness of zirconia ceramics could be significantly improved by sandblasting, conventional grinding and ultrasonic-assisted grinding. Compared with other methods, sandblasting can significantly improve the shear bond strength between zirconia and resin adhesive, and the shear bond strength between zirconia and resin adhesive after ultrasonic-assisted grinding is lower. Ordinary grinding can not improve the resin bonding strength of zirconia, but other surface treatment methods should be used to improve the bonding strength between zirconia and resin adhesive.
【學(xué)位授予單位】：南京大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：R783.1
[Abstract]:With the increasing demand for aesthetics and safety of dental restorations, all-ceramic materials are becoming more and more popular, and the application of CAD/CAM in processing zirconia ceramics is becoming more and more popular. Dense zirconia restorations. After a number of procedures, the restorations processing accuracy is difficult to guarantee, mechanical properties have also declined. Another method is to finish the crystallization of zirconia ceramic grinding, the advantages of the finished restorations are high precision and mechanical strength. Because the fully sintered zirconia is hard, the traditional calculation. Ultrasound-assisted grinding is a promising method for processing oral zirconia ceramics because of its high efficiency, high precision and low tool damage compared with traditional grinding methods. [Objective] The purpose of this study is to compare the surface properties (surface roughness, micro-morphology) of zirconia specimens after different treatment methods, summarize the special effects of ultrasonic grinding on the surface properties of zirconia, and explore the shear resistance test of zirconia specimens and resin adhesive after different treatment methods. [Methods] InCoris TZI machinable zirconia ceramic pieces were cut into 55 pieces by slow cutting machine and sintered into zirconia ceramic pieces by Ceramill Therm high temperature sintering furnace. Treatment group (B): 50 micron Al2O3 particle sandblasting treatment; Ordinary grinding group (C, D): Ordinary grinding with ordinary diameter, small diameter diamond tools in ultrasonic vibration machining center for ordinary grinding; Ultrasonic grinding group (E): ultrasonic vibration machining center for ultrasonic assisted grinding. All porcelain pieces after ultrasonic cleaning room temperature drying. The arithmetic mean roughness (Ra), micro-irregularity 10-point height (Rz) and two-dimensional contour images were measured by a portable roughness tester. One piece of zirconia porcelain was taken from each group and the surface micro-morphology of each group was observed by scanning electron microscope. The edge fragmentation of C and E groups was compared. Panavia F2.0 adhesive was evenly coated in the limited area. The prefabricated resin block was placed on it. The resin block was pressed lightly for 3 minutes and cured by LED light for 30 minutes at room temperature. After shear test, the fracture mode of each group was observed under stereomicroscope. The surface roughness and shear bond strength of each group of zirconia were analyzed by SPSS18.0 software, and the mean values of SNK were compared by variance homogeneity analysis and SNK method. The results showed that the average deviation (Ra) of zirconia contour was significantly affected by physical parameters: the highest Ra value was found in the sandblasting group (group B), the common grinding group (standard size, group C), the ultrasonic grinding group (group E), and there was no significant difference among the three groups (p0.05), the second was in the common grinding group (small size, group D), and the lowest was in the blank control group (group A). Zirconia micro-irregularity 10-point height (Rz) has a significant impact: sandblasting treatment group (group B), ordinary grinding group (standard size, group C), ultrasonic grinding group (group E) three groups were significantly higher than the other two groups (p0.05), and the sandblasting treatment group (group B) was significantly higher than the ordinary grinding group (standard size, group C), while the sandblasting treatment group (group B) and ultrasonic grinding group (group E). There was no significant difference (p0.05). There was no significant difference (p0.05) between the normal grinding group (standard size, group C) and the ultrasonic grinding group (group E). The Rz value of the ordinary grinding group (small size, group D) ranked fourth (p0.05), while that of the blank control group (group A) was the lowest (p0.05). 2-D contour image analysis showed that the surface of zirconia ceramic in the blank control group (group A) was smoother. (group B) surface formed uniform irregular concave-convex; common grinding group (group C, D) profile of the relative law; ultrasonic grinding (group E) after the surface of the most regular: adjacent contour peak / contour valley shape approximate, neatly arranged. 3. Scanning electron microscopy observation of the surface morphology of each experimental group: blank control group (group A) surface smooth, with a small number of. Shallow scratches; abrasive blasting treatment group (group B) showed uniform irregular concave-convex surface, sharp edges and corners, occasionally thick, deep grooves; ordinary grinding group (group C, D) surface was parallel and compact distribution of grooves, deeper than the blank control group, sandblasting treatment group shallow; ultrasonic grinding group (group E) surface showed staggered grooves, rough and uneven. The results show that the edge of zirconia ceramics grinded by ultrasonic grinding is relatively intact, and there is no obvious material fragmentation; the edge of zirconia ceramics grinded by conventional grinding is irregular in size and shape, and the edge quality is poor. 4. The results show that different surface treatments have a significant effect on the bond strength of zirconia: the bond strength of sandblasting group (group B) is the highest, and there is a significant difference with the other four groups (p0.05); the strength of blank control group (group A) and two ordinary grinding groups (group C, D) is the second, and the bond strength between the three groups is the highest. There was no significant difference in bond strength (p0.05); ultrasonic grinding group (E group) had the lowest bond strength, which was significantly different from the other four groups (p0.05). [Conclusion] 1. Compared with the blank control group, the surface roughness of zirconia ceramics could be significantly improved by sandblasting, conventional grinding and ultrasonic-assisted grinding. Compared with other methods, sandblasting can significantly improve the shear bond strength between zirconia and resin adhesive, and the shear bond strength between zirconia and resin adhesive after ultrasonic-assisted grinding is lower. Ordinary grinding can not improve the resin bonding strength of zirconia, but other surface treatment methods should be used to improve the bonding strength between zirconia and resin adhesive.
【學(xué)位授予單位】：南京大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：R783.1
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 邱憬;陳亞明;光寒冰;;不同表面及處理對(duì)瓷修補(bǔ)粘接強(qiáng)度影響的實(shí)驗(yàn)研究[J];實(shí)用口腔醫(yī)學(xué)雜志;2010年03期
2 趙信義;;牙齒粘接強(qiáng)度的測(cè)定及其影響因素[J];口腔材料器械雜志;2010年03期
3 張振亮;傅柏平;;測(cè)試微拉伸粘接強(qiáng)度的影響因素[J];國(guó)際口腔醫(yī)學(xué)雜志;2012年05期
4 疏新紅;采用硅烷增強(qiáng)鈦與聚甲基丙烯酸樹(shù)脂之間的粘接強(qiáng)度[J];國(guó)外醫(yī)學(xué).口腔醫(yī)學(xué)分冊(cè);1996年06期
5 管利民,陳治清,張敏,邱靜;非調(diào)和型正畸粘接劑的粘接強(qiáng)度考察[J];口腔材料器械雜志;1997年02期
6 朱亞萍;郭建青;傅柏平;;不同粘接劑和瓷表面處理對(duì)粘接強(qiáng)度的研究[J];口腔醫(yī)學(xué)研究;2014年08期
7 李冬梅;郭天文;馬楚凡;王寶成;;不同噴砂粒度的預(yù)處理對(duì)鈦與不同瓷聚合體粘接強(qiáng)度的影響[J];實(shí)用口腔醫(yī)學(xué)雜志;2008年03期
8 王迎捷;陳吉華;李雅卿;周強(qiáng);;硅烷化過(guò)程中不同加熱溫度對(duì)瓷和樹(shù)脂粘接強(qiáng)度的影響[J];現(xiàn)代口腔醫(yī)學(xué)雜志;2010年01期
9 蘇莉;白玉興;厲松;;新型正畸粘接劑聚合特征和剪切粘接強(qiáng)度的研究[J];北京口腔醫(yī)學(xué);2010年06期
10 肖喜梅;邢路;許海平;江U，
本文編號(hào)：2198263
本文鏈接：http://sikaile.net/yixuelunwen/kouq/2198263.html
最近更新
教材專著
