Consensus on the preparation margin and restoration margin in ceramic esthetic rehabilitation

doi:10.7518/hxkq.2022.02.001

West China Journal of Stomatology ›› 2022, Vol. 40 ›› Issue (2): 123-133.doi: 10.7518/hxkq.2022.02.001

Consensus on the preparation margin and restoration margin in ceramic esthetic rehabilitation

Yu Haiyang¹(), Yue Li¹, Liu Weicai², Liu Feng³, Niu Lina⁴, Shao Longquan⁵, Liao Hongbing⁶, Luo Xiaoping⁷, Li Hongbo⁸, Jiang Qingsong⁹, Yu Hao¹⁰, Zhao Bin¹¹, Wu Zhe¹², Li Changyi¹³, Wu Guofeng⁷, Wang Yan¹⁴, Mou Yandong¹⁵, Liu Yunsong³, Zhang Haiyang¹⁶, Chen Jihua⁴, Liu Hongchen⁸

^1.State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
^2.Hospital of Stomatology, Tongji University, Shanghai 200072, China
^3.School and Hospital of Stomatology, Peking University, Beijing 100081, China
^4.School of Stomatology, The Fourth Military Medical University, Xi, an 710032, China
^5.Nanfang Hospital, Southern Medical University, Guangzhou 510280, China
^6.College of Stomatology, Guangxi Medical University, Nanning 530013, China
^7.Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, China
^8.Research Institute of Stomatology, Chinese PLA General Hospital, Beijing 100853, China
^9.Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100006, China
^10.School and Hospital of Stomatology, Fujian Medical University, Fuzhou 350002, China
^11.Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030012, China
^12.Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510013, China
^13.Stomatological Hospital, Tianjin Medical University, Tianjin 300070, China
^14.Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
^15.Dept. of Stomatology, Sichuan Provincial People, s Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China
^16.Hospital of Stomatology, Jilin University, Changchun 130021, China

Received:2021-12-01 Revised:2022-01-05 Online:2022-04-01 Published:2022-04-01
Contact: Yu Haiyang E-mail:yhyang6812@scu.edu.cn
Supported by:
The National Natural Science Foundation of China(82071145);The Research Fund of Inter-disciplinary Innovation Project from Sichuan University(RD-03-202009);Correspondence: Yu Haiyang, E-mail: yhyang6812@scu.edu.cn

Abstract

Abstract:

In esthetic rehabilitation, methods used to enhance the margin quality have always been the focus and difficulty of improving the level of diagnosis and treatment, prevention and treatment of complications, and collaboration between clinicians and technicians. However, it is impeded by the ambiguous definition and classification of margin, unstandardized tooth preparation, manufacturing process of restoration, and lack of reliable means of checking the quantitative requirements of preparation or restoration. The digital technologies that are increasingly applied, such as intra-oral scanner, impression scanner, and computerized numerical control cutting machine, have strict requirements about margin quality. Failure of recognizing margins by these scanners will hinder the digital process of diagnosis and treatment. Even if these sharp and narrow margins are successfully scanned, they cannot be milled accurately. To overcome these problems, this article demonstrated the clear and complete definition of preparation margin and restoration margin, as well as their subclassifications, by analyzing the target restoration space from a geometric perspective. Practical approaches to measuring the margin width and inspecting the margin quality were proposed. The new and full understanding and proposal about preparation margin and restoration margin characterized by measurements will effectively support the thoroughly digitalized process of esthetic rehabilitation using porcelain in fixed prosthodontics, which is based on the guidance of values.

Key words: preparation margin, restoration margin, esthetic porcelain rehabilitation, digitalization, physical measurement, clinician-patient-technician collaboration

CLC Number:

R 783.3

Yu Haiyang, Yue Li, Liu Weicai, Liu Feng, Niu Lina, Shao Longquan, Liao Hongbing, Luo Xiaoping, Li Hongbo, Jiang Qingsong, Yu Hao, Zhao Bin, Wu Zhe, Li Changyi, Wu Guofeng, Wang Yan, Mou Yandong, Liu Yunsong, Zhang Haiyang, Chen Jihua, Liu Hongchen. Consensus on the preparation margin and restoration margin in ceramic esthetic rehabilitation[J]. West China Journal of Stomatology, 2022, 40(2): 123-133.

Figures/Tables 6

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References 32

1	Yu HY, Zhao YW, Li JY, et al. Minimal invasive microscopic tooth preparation in esthetic restoration: a specialist consensus[J]. Int J Oral Sci, 2019, 11(3): 31.
2	刘峰. 微创和无创瓷贴面修复的适应范围[J]. 口腔颌面修复学杂志, 2016, 17(6): 321-324.
	Liu F. The indications of minimally invasive and non-invasive porcelain veneers[J]. J Oral Maxillofac Prosthet,2016, 17(6): 321-324.
3	于海洋. 口腔固定修复学[M]. 2版. 北京: 人民卫生出版社, 2016.
	Yu HY. Fixed prosthodontics[M]. 2nd ed. Beijing: People's Medical Publishing House, 2016.
4	Rosenstiel SF, Land MF, Fujimoto J. Contemporary fixed prosthodontics[M]. Amsterdam: Elsevier Health Sciences, 2015.
5	Shillingburg HT, Hobo S, Whitsett LD, et al. Fundamentals of fixed prosthodontics[M]. Chicago: Quintessence Publishing Company, 1997.
6	Weaver JD, Johnson GH, Bales DJ. Marginal adaptation of castable ceramic crowns[J]. J Prosthet Dent, 1991, 66(6): 747-753.
7	Naert I, Van der Donck A, Beckers L. Precision of fit and clinical evaluation of all-ceramic full restorations followed between 0.5 and 5 years[J]. J Oral Rehabil, 2005, 32(1): 51-57.
8	谭建国. 我国口腔美学发展的过去、现在和未来[J]. 中华口腔医学杂志, 2019, 54(6): 368-372.
	Tan JG. The past, present and future of development of oral esthetics in China[J]. Chin J Stomatol, 2019, 54(6): 368-372.
9	Ferro KJ, Morgano SM. The glossary of prosthodontic terms: ninth edition[J]. J Prosthet Dent, 2017, 117(5S): e1-e105.
10	Wassell R, Nohl F, Steele J, et al. Extra-coronal restorations: concepts and clinical application[M]. Berlin: Sprin-ger, 2018.
11	Yüksel E, Zaimoğlu A. Influence of marginal fit and cement types on microleakage of all-ceramic crown systems[J]. Braz Oral Res, 2011, 25(3): 261-266.
12	Wisithphrom K, Murray PE, About I, et al. Interactions between cavity preparation and restoration events and their effects on pulp vitality[J]. Int J Periodontics Restorative Dent, 2006, 26(6): 596-605.
13	Wang P, Sun FF, Yu Q, et al. Three-dimensional analysis of the relationship between the structure of maxillary central incisor and the preparation of dental all-ceramic[J]. PLoS One, 2018, 13(12): e0209791.
14	于海洋. 美学修复的临床分析设计与实施: 第 1册. 临床分析设计[M]. 北京: 人民卫生出版社, 2014.
	Yu HY. Clinical analysis design and implementation of aesthetic restoration: volume 1. Clinical analysis design[M]. Beijing: People's Medical Publishing House, 2014.
15	于海洋, 李俊颖. 目标修复体空间的内涵、分析设计及临床转移实施[J]. 华西口腔医学杂志, 2015, 33(2):111-114.
	Yu HY, Li JY. The concept, clinical design and transfer application of target restoration space[J]. West China J Stomatol, 2015, 33(2): 111-114.
16	Lawn B. Fracture of brittle solids[M]. 2nd ed. Cambridge: Cambridge University Press, 1995.
17	Zhang Y, Kelly JR. Dental ceramics for restoration and metal veneering[J]. Dent Clin North Am, 2017, 61(4): 797-819.
18	Rekow ED, Silva NR, Coelho PG, et al. Performance of dental ceramics: challenges for improvements[J]. J Dent Res, 2011, 90(8): 937-952.
19	Carr GB, Murgel CA. The use of the operating microscope in endodontics[J]. Dent Clin North Am, 2010, 54(2): 191-214.
20	Eichenberger M, Biner N, Amato M, et al. Effect of magnification on the precision of tooth preparation in dentistry[J]. Oper Dent, 2018, 43(5): 501-507.
21	Liu CX, Guo J, Gao J, et al. Computer-assisted tooth preparation template and predesigned restoration: a digital workflow[J]. Int J Comput Dent, 2020, 23(4): 351-362.
22	于海洋. 关于牙体预备里的数字追问——从目测经验类比到数字引导[J]. 华西口腔医学杂志, 2021, 39(1): 9-19.
	Yu HY. Questions about the numerical value and quantitative data transfer of tooth preparation—from experience guidance to digital guidance[J]. West China J Stomatol, 2021, 39(1): 9-19.
23	Pimenta MA, Frasca LC, Lopes R, et al. Evaluation of marginal and internal fit of ceramic and metallic crown copings using X-ray microtomography (Micro-CT) technology[J]. J Prosthet Dent, 2015, 114(2): 223-228.
24	罗天, 李俊颖, 于海洋. 制备高精度牙预备体肩台的临床路径和预备方法[J]. 华西口腔医学杂志, 2020, 38(6): 712-717.
	Luo T, Li JY, Yu HY. Clinical pathway and preparation method of high-precision tooth shoulder platform[J]. West China J Stomatol, 2020, 38(6): 712-717.
25	Funkenbusch PD, Rotella M, Chochlidakis K, et al. Multivariate evaluation of the cutting performance of rotary instruments with electric and air-turbine handpieces[J]. J Prosthet Dent, 2016, 116(4): 558-563.
26	da Silva TF, de Melo MP, Pereira JR, et al. Subjective qualitative assessment of the finish line of prosthetic preparations submitted to different finishing instruments[J]. J Prosthet Dent, 2016, 116(3): 375-381.
27	Shimada Y, Tagami J. Effects of regional enamel and prism orientation on resin bonding[J]. Oper Dent, 2003, 28(1): 20-27.
28	Bernauer SA, Müller J, Zitzmann NU, et al. Influence of preparation design, marginal gingiva location, and tooth morphology on the accuracy of digital impressions for full-crown restorations: an in vitro investigation[J]. J Clin Med, 2020, 9(12): E3984.
29	Liang SS, Yuan FS, Luo X, et al. Digital evaluation of absolute marginal discrepancy: a comparison of ceramic crowns fabricated with conventional and digital techniques[J]. J Prosthet Dent, 2018, 120(4): 525-529.
30	Al Hamad KQ, Al Rashdan BA, Al Omari WM, et al. Comparison of the fit of lithium disilicate crowns made from conventional, digital, or conventional/digital techniques[J]. J Prosthodont, 2019, 28(2): e580-e586.
31	Renne W, Wolf B, Kessler R, et al. Evaluation of the marginal fit of CAD/CAM crowns fabricated using two different chairside CAD/CAM systems on preparations of varying quality[J]. J Esthet Restor Dent, 2015, 27(4): 194-202.
32	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.e10.

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Consensus on the preparation margin and restoration margin in ceramic esthetic rehabilitation

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