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北京大学学报（医学版） ›› 2019, Vol. 51 ›› Issue (1): 93-99. doi: 10.19723/j.issn.1671-167X.2019.01.017

• 论著 • 上一篇    下一篇

不同加工方法及材料制作部分贴面的边缘形貌分析

王睿捷1,刘敏1,宋丹阳1,杨随1,王乔2,王磊1,△(),冯海兰1,△()   

  1. 1. 北京大学口腔医学院·口腔医院, 修复科, 北京　100081
    2. 北京大学口腔医学院·口腔医院, 义齿加工中心　国家口腔疾病临床医学研究中心　口腔数字化医疗技术和材料国家工程实验室　口腔数字医学北京市重点实验室国家工程实验室, 北京　100081
  • 收稿日期:2018-10-11 出版日期:2019-02-18 发布日期:2019-02-25
  • 通讯作者: 王磊,冯海兰 E-mail:wanglei_dentist@163.com;kqfenghl@bjmu.edu.cn
  • 基金资助:
    国家自然科学基金(81470770);北京大学口腔医院临床新技术新疗法项目(PKUSSNCT-13B04)

Analysis of edge morphology of partial veneers made by different processing techniques and materials

Rui-jie WANG1,Min LIU1,Dan-yang SONG1,Sui YANG1,Qiao WANG2,Lei WANG1,△(),Hai-lan FENG1,△()   

  1. 1. Department of Prosthodontics, Beijing 100081, China
    2. Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
  • Received:2018-10-11 Online:2019-02-18 Published:2019-02-25
  • Contact: Lei WANG,Hai-lan FENG E-mail:wanglei_dentist@163.com;kqfenghl@bjmu.edu.cn
  • Supported by:
    Supported by the National Na-tural Science Foundation of China(81470770);and the New Clinical Techniques and Therapies of Peking University School and Hospital of Stomatology(PKUSSNCT-13B04)

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摘要：

目的:比较采用粉浆堆塑工艺、热压铸造工艺及计算机辅助设计/计算机辅助制造(computer aided design/computer aided manufacturing,CAD/CAM)技术制作的不同材料部分贴面的边缘形貌。方法:选择无明显磨耗、龋坏,表面釉质光滑完整的人前磨牙30颗,随机分为5组,每组6颗,分别采用耐火代型粉浆堆塑工艺制作Noritake ?长石质烤瓷部分贴面,热压铸造工艺制作IPS E.max Press部分贴面,CAD/CAM技术制作VITA Mark Ⅱ、VITA Supri-nity、VITA Enamic部分贴面。部分贴面试件粘接完成后,按照临床步骤进行边缘修整及抛光,获得在离体牙上粘接完成的部分贴面。通过肉眼观察、扫描电镜及色散能谱,记录并分析部分贴面边缘微观形貌及粘接剂暴露宽度。结果:不同加工方式及材料的部分贴面在粘接后经过修整、抛光,可获得肉眼可见的较光滑的材料表面及菲薄的刃状边缘。Noritake烤瓷组边缘较粗糙,粘接剂带状暴露量为(106.00±9.17) μm;E.max Press组边缘较平整,粘接剂暴露量为(138.33±20.59) μm;Enamic组边缘平滑,粘接剂暴露宽度较大,为(186.00±5.66) μm;Mark Ⅱ组与Suprinity组边缘虽有粗糙不平,但粘接剂暴露较少,分别为(50.67±7.51) μm及(65.67±17.90) μm;除Mark Ⅱ组与Suprinity组外,其余各组间差异均有统计学意义。结论:不同加工方法及材料制作的部分贴面,经过粘接、修整及抛光后,均可获得刃状边缘,但各组粘接剂有不同程度暴露,暴露量大小为Mark Ⅱ组/Suprinity组

关键词: 部分贴面, 边缘形貌, 粉浆堆塑, 热压铸造, 计算机辅助设计

Abstract:

Objective: To compare the edge morphology of partial veneers made of different materials by slurry molding, heat-pressed and computer aided design/computer aided manufacturing (CAD/CAM) techniques. Methods: Thirty premolars with smooth surface and intact enamel were selected and randomly divided into five groups, 6 specimens for each group. Group A were made from feldspathic porcelain (Noritake ?) by slurry molding, while Group B were made from lithium disilicate glass ceramic (IPS E.max ? Press) by heat-pressed. Group C/D/E were respectively made from feldspar porcelain block (VITA Mark Ⅱ ?), zirconia-reinforced glass ceramic (VITA Suprinity ?) and hybrid ceramic with a ceramic-polymer network (VITA Enamic ?) by CAD/CAM techniques. All the partial veneers luted with light-cured composite resin. Then the partial veneers were trimmed and polished to achieve the smooth finishing margin, clinical polishing sets were used according to the product descriptions. Scanning electron microscope (SEM) was used to observe the edge morphology of prostheses and the exposure of resin cements. Results: The smooth surface and knife-like edge of the partial veneers could be obtained after bonding, trimming and polishing. The edges of Group A were slightly rough and the width of the exposed adhesive was (106.00±9.17) μm. In Group B, the edges were smoother than Group A, and the exposed wide adhesive strip was visible, which was (138.33±20.59) μm. In Group E, the edges were smooth too, and the width of exposed adhesive strip was (186.00±5.66) μm. The edges of Group C and Group D were rough and uneven, and the adhesive was rarely exposed, they were (50.67±7.51) μm and (65.67±17.90) μm. There were all significant differences between two groups, except Group C and Group D. Conclusion: After trimming and polishing in accordance with clinical procedures, the expected knife-like edge can be obtained in all groups. The width of the exposed resin adhesive of each group is different, the order: Mark Ⅱ/Suprinity

Key words: Partial veneer, Edge morphology, Slurry molding, Heat-pressed, Computer aided design

中图分类号: 

  • R783.3

表1

部分贴面材料特征和产品信息"

Group Material Manufacturer Color/size Class/terminology
A Feldspathic porcelain Noritake Dental Inc., Japan A2 High-temperature feldspathic porcelain powder
B IPS E.max Press Voclar Vivadent, Liechtenstein A2 Lithium disilicate ceramic
C MarkⅡ VITA Zahnfabrik, Germany A2/C14 Feldspathic porcelain
D Suprinity VITA Zahnfabrik, Germany A2/C14 Zirconia reinforced glass-ceramic
E Enamic VITA Zahnfabrik, Germany 2M2/C14 Polymer-infiltrated ceramics

图1

部分贴面牙体预备后照片"

图2

抛光套装"

图3

Noritake烤瓷(A)、E.max热压铸瓷(B)、Mark Ⅱ(C)及Enamic(D)部分贴面照片"

图4

部分贴面边缘能谱分析区域(左)及其扫描能谱照片(右)"

图5

各种材料部分贴面边缘区域电子显微镜扫描照片"

表2

不同加工方法及材料的部分贴面的边缘粘接剂宽度(n=3)"

Group Processing technic Material Width of adhesive/μm, x?±s
A Slurry molding Noritake 106.00±9.17a
B Heat-pressed E.max Press 138.33±20.59b
C CAD/CAM Mark Ⅱ 50.67±7.51c
D CAD/CAM Suprinity 65.67±17.90c
E CAD/CAM Enamic 186.00±5.66d

图6

部分贴面边缘纵断面示意图"

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ISSN 1671-167X
CN 11-4691/R
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