Email Alert | RSS

Journal of Peking University (Health Sciences) ›› 2023, Vol. 55 ›› Issue (6): 1105-1110. doi: 10.19723/j.issn.1671-167X.2023.06.023

Previous Articles     Next Articles

Influence of cavity design on quality of margin and marginal adaptation and microleakage of all-ceramic CAD/CAM inlays

Si-ming ZHAO,Xiao-yan WANG*()   

  1. Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Research Center of Engineering and Technology for Computerized Dentistry & NMPA Key Laboratory for Dental Materials, Beijing 100081, China
  • Received:2023-01-04 Online:2023-12-18 Published:2023-12-11
  • Contact: Xiao-yan WANG E-mail:wangxiaoyan@pkuss.bjmu.edu.cn
  • Supported by:
    Clinical Research Fund of Young Scientists for Ceramic Materials of Chinese Stomatological Association(CSA-P2019-04)

RICH HTML

 3   

PDF (PC)

121

Abstract:

Objective: To investigate the influence of 135° and 90° cavity design on quality of margin and marginal adaptation and microleakage of all-ceramic computer aided design/computer aided manufacturing (CAD/CAM) inlays. Methods: One hundred extracted human molars were prepared by criteria of buccal occlusal (BO) inlay. On the buccal, the mesial margin was prepared as 135° bevel while the distal margin was prepared as butt-joint. All-ceramic restorations were made in the Sirona CEREC AC CAD/CAM system with VitaBlocs Mark Ⅱ, Upcera UP.CAD, IPS e.max CAD, Upcera Hyramic and Lava Ultimate. The gaps between each inlay's mesial margin-abutment and distal margin-abutment were recorded under an optical microscope. Each inlay was adhered to the abutment and aged by thermal cycling for 10 000 times. Each specimen was cut into 3 slices after staining. Dye penetration was evaluated under an optical microscope for mesial and distal margins. Results: Mean marginal integrity rate, mean marginal gap value and mean depth of microleakage of 135° margin of Group Upcera Hyramic and Lava Ultimate were significantly better than those of Group VitaBlocs Mark Ⅱ, Upcera UP.CAD and IPS e.max CAD(P < 0.05). Mean marginal gap value, mean depth of microleakage and scale of mean depth of microleakage of 90° margin of Group Upcera Hyramic and Lava Ultimate were significantly better than those of Group Upcera UP.CAD and IPS e.max CAD (P < 0.05) while mean marginal integrity rate was not significantly different (P>0.05). Mean marginal integrity rate of 90° margin was significantly better than that of 135° margin in each group (P < 0.05) while mean depth of microleakage between different margins was not significantly different in each group (P>0.05). Mean marginal gap value of 90° margin of Group VitaBlocs Mark Ⅱ and IPS e.max CAD was significantly better than that of 135° margin (P < 0.05) while there was not significant difference in other 3 groups between 90° and 135° margin (P>0.05). Scale of mean depth of microleakage of 135° margin of Group Upcera Hyramic and Lava Ultimate was significant better than that of 90° margin (P < 0.05) while there was not significantly different in other 3 groups between 90° and 135° margin (P>0.05). Conclusion: The mesial and distal margins of abutement of all-ceramic inlay should be prepared as butt-joint.

Key words: CAD/CAM, Cavity design, Marginal integrity, Marginal Gap, Microleakage

CLC Number: 

  • R783.1

Figure 1

Experimental flow graph"

Figure 2

Preparation criteria of inlay A, buccal view; B, occlusal view."

Figure 3

Inlay fitting to the abutment A, 135° margin; B, 90° margin."

Figure 4

Dye penetration of adhesive interface between inlay and abutment A, 135° margin; B, 90° margin."

Figure 5

Rate of marginal integrity of inlays a, VitaBlocs Mark Ⅱ; b, Upcera UP.CAD; c, IPS e.max CAD; d, Upcera Hyramic; e, Lava Ultimate. * P < 0.05, a significant difference between 135° margin and 90° margin in each group by using paired-samples t test."

Figure 6

Mean marginal gap value of inlays a, VitaBlocs Mark Ⅱ; b, Upcera UP.CAD; c, IPS e.max CAD; d, Upcera Hyramic; e, Lava Ultimate.* P < 0.05, a significant difference between 135° margin and 90° margin in each group by using paired-samples t test."

Figure 7

Mean depth of dye penetration a, VitaBlocs Mark Ⅱ; b, Upcera UP.CAD; c, IPS e.max CAD; d, Upcera Hyramic; e, Lava Ultimate."

1 Azeem RA , Sureshbabu NM . Clinical performance of direct versus indirect composite restorations in posterior teeth: A systematic review[J]. J Conserv Dent, 2018, 21 (1): 2- 9.
2 Schroeder M , Reis A , Luque-Martinez I , et al. Effect of enamel bevel on retention of cervical composite resin restorations: A systematic review and meta-analysis[J]. J Dent, 2015, 43 (7): 777- 788.
doi: 10.1016/j.jdent.2015.02.017
3 中华口腔医学会口腔美学专业委员会, 中华口腔医学会口腔材料专业委员会. 全瓷美学修复材料临床应用专家共识[J]. 中华口腔医学杂志, 2019, 54 (12): 825- 828.
doi: 10.3760/cma.j.issn.1002-0098.2019.12.007
4 Taha D , Spintzyk S , Sabet A , et al. Assessment of marginal adaptation and fracture resistance of endocrown restorations utilizing different machinable blocks subjected to thermomechanical aging[J]. J Esthet Restor Dent, 2018, 30 (4): 319- 328.
doi: 10.1111/jerd.12396
5 Contrepois M , Soenen A , Bartala M , et al. Marginal adaptation of ceramic crowns: A systematic review[J]. J Prosthet Dent, 2013, 110 (6): 447- 454.
doi: 10.1016/j.prosdent.2013.08.003
6 Goujat A , Abouelleil H , Colon P , et al. Marginal and internal fit of CAD-CAM inlay/onlay restorations: A systematic review of in vitro studies[J]. J Prosthet Dent, 2019, 121 (4): 590- 597.
doi: 10.1016/j.prosdent.2018.06.006
7 Dioguardi M , Alovisi M , Troiano G , et al. Clinical outcome of bonded partial indirect posterior restorations on vital and non-vital teeth: A systematic review and meta-analysis[J]. Clin Oral Investig, 2021, 25 (12): 6597- 6621.
doi: 10.1007/s00784-021-04187-x
8 Oz FD , Bolay S , Canatan S . A clinical evaluation of resin nanoceramic CEREC omnicam restorations associated with several factors[J]. J Esthet Restor Dent, 2021, 33 (4): 583- 589.
doi: 10.1111/jerd.12691
9 Frankenberger R , Hartmann VE , Krech M , et al. Adhesive luting of new CAD/CAM materials[J]. Int J Comput Dent, 2015, 18 (1): 9- 20.
10 Gold SA , Ferracane JL , da Costa J . Effect of crystallization firing on marginal gap of CAD/CAM fabricated lithium disilicate crowns[J]. J Prosthodont, 2018, 27 (1): 63- 66.
doi: 10.1111/jopr.12638
11 Baldi A , Comba A , Michelotto Tempesta R , et al. External marginal gap variation and residual fracture resistance of composite and lithium-silicate CAD/CAM overlays after cyclic fatigue over endodontically-treated molars[J]. Polymers (Basel), 2021, 13 (17): 3002.
doi: 10.3390/polym13173002
12 Lima FF , Neto CF , Rubo JH , et al. Marginal adaptation of CAD-CAM onlays: Influence of preparation design and impression technique[J]. J Prosthet Dent, 2018, 120 (3): 396- 402.
doi: 10.1016/j.prosdent.2017.10.010
13 Oliveira J , Dorado L , Koch D , et al. Marginal microleakage in cavities prepared with CVD tip and 245 bur[J]. Dent Implantol Update, 2009, 20 (3): 17- 23.
14 Simi B , Suprabha B . Evaluation of microleakage in posterior nanocomposite restorations with adhesive liners[J]. J Conserv Dent, 2011, 14 (2): 178- 181.
doi: 10.4103/0972-0707.82631
15 傅柏平, 金光盛, MatthiasH. 自蚀粘接剂对复合树脂微渗漏的影响[J]. 浙江大学学报(医学版), 2002, 31 (5): 53- 56.
16 周宪华, 牛文芝, 王鹏来, 等. 有无洞缘斜面对聚合瓷嵌体微渗漏影响的实验研究[J]. 现代口腔医学杂志, 2012, 26 (6): 392- 393.
[1] Qiu-ju LI,Wei-yu GONG,Yan-mei DONG. Effect of bioactive glass pretreatment on the durability of dentin bonding interface [J]. Journal of Peking University (Health Sciences), 2020, 52(5): 931-937.
[2] LI Shuang, ZHANG Qing. Effect of smear layer on apical sealing ability of mineral trioxide aggregate (MTA) Plus through the sucrose penetration mode [J]. Journal of Peking University(Health Sciences), 2018, 50(3): 560-563.
[3] XIE Yao, ZHANG Sun, GE Li-Hong. Marginal microleakage of cavities prepared with Er:YAG laser on primary teeth  in vitro [J]. Journal of Peking University(Health Sciences), 2014, 46(3): 474-477.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Journal of Peking University (Health Sciences), All Rights Reserved.
Powered by Beijing Magtech Co. Ltd