Mohammed Ashiq Mohamed, Ahila Singaravel Chidambaranathan, Muthukumar Balasubaramaium
Mohammed Ashiq Mohamed, Ahila Singaravel Chidambaranathan*, Muthukumar Balasubaramaium
Department of Prosthodontics, SRM Dental College, Ramapuram, Chennai - 600089, Tamil Nadu, India.
Volume - 16,
Issue - 10,
Year - 2023
Marginal fit of the dental restoration is important to prevent microleakage and periodontal problems so as to avoid secondary caries around the abutment teeth. The purpose of the study was to compare and evaluate the internal fit of copings manufactured using a CAD/CAM-system and laboratory-made heat-pressed ceramics. For this research, typodont mandibular left first molar was prepared about 1.5mm occlusal reduction and 6° taper both mesiodistally and buccolingually with shoulder finish line of 1.0mm width to receive all ceramic crown which was duplicated in silicone impressions and the respective working casts were formed using Type IV die stone and the restorations were made by CAD-CAM system for zirconia coping and wax pattern for heat-pressable lithium disilicate ceramics. Total of 20 dies were made and divided into Group I- zirconia copings and Group II - heat pressable lithium disilicate ceramics, in which 10 crowns were made in each group. The crowns were cemented to the respective dies with cyanoacrylate cement using finger pressure. The samples were then sectioned facio-lingually and the three zones measured were 2mm above the marginal finish line in both lingual and buccal side and one in the center of the occlusal surface. The mean horizontal and the vertical internal adaptation discrepancies statistically analyzed using Mann-Whitney test. It was concluded that CAD-CAM milled zirconia copings showed closer adaptation in the axial walls than heat pressed ceramic copings. But in the mid occlusal level where the adaptation was closer in heat pressed ceramic copings than the CAD-CAM milled zirconia copings.
Cite this article:
Mohammed Ashiq Mohamed, Ahila Singaravel Chidambaranathan, Muthukumar Balasubaramaium. Experimental Study to Evaluate the Internal Fit between Computer Aided Designing/Computer Aided Manufactured (CAD-CAM) Zirconia Coping and Pressable Ceramic Coping. Research Journal of Pharmacy and Technology 2023; 16(10):4591-6. doi: 10.52711/0974-360X.2023.00747
Mohammed Ashiq Mohamed, Ahila Singaravel Chidambaranathan, Muthukumar Balasubaramaium. Experimental Study to Evaluate the Internal Fit between Computer Aided Designing/Computer Aided Manufactured (CAD-CAM) Zirconia Coping and Pressable Ceramic Coping. Research Journal of Pharmacy and Technology 2023; 16(10):4591-6. doi: 10.52711/0974-360X.2023.00747 Available on: https://rjptonline.org/AbstractView.aspx?PID=2023-16-10-17
1. Brintha Jei J, Muthukumar B. Evolution of fixed partial design-A review. Streamdent. 2012;3:51-53.doi.org/2012/3/1/51/128092.
2. Yu Zhang, Robert KJ. Dental ceramics for restoration and metal-veneering. Dent Clin North Am. 2017; 61(4):797-819.doi.org/10.1016/j.cden.2017.06.005.
3. Burcin A, Buket E, Coskun Y, Altay U, Yasemin K. Internal and marginal adaptation of pressable and computer-aided design/ computer-assisted manufactured on lay restorations. Int J Prosthodont. 2012; 25(3):262-4. PMID: 22545256.
4. Tsitrou A, Northeast SE, Van Noort R. Evaluation of the marginal fit of three margin designs of resin composite crowns using CAD/ CAM. Journal of Dentistry. 2007;35 (1):68-73.doi.org/10.1016/j.jdent.2006.04.008.
5. Gorman CM, Mc Devitt WE, Hill RG.Comparison of two heat-pressed all-ceramic dental materials. Dental Materials. 2000; 16: 389-95.doi.org /10.1016/s0109-5641(00)00031-2.
6. Raigrodski AJ. Contemporary materials and technologies for all ceramic fixed partial dentures:A review of the literature. J. Prosthet Dent. 2004; 92: 557-562.doi.org/10.1016/j.prosdent.2004.09.015
7. Conrad HJ, Seong WJ, Pesun IJ. Current ceramic materials and systems with clinical recommendations: A systematic review. J Prosthet Dent. 2007; 98:389-404.doi.org/10.1016/S0022-3913(07)60124-3
8. Jonathan G, Elsa A. Zirconia in dental prosthetics-A literature review. J Mater Res and Tech. 2019;8(5):4956-464.doi.org/10.1016/j.jmrt.2019.06.0
9. Choi JE, Waddell JN, Torr B, Swain MV. Pressed ceramics onto zirconia. Part 1: Comparison of crystalline phases present, adhesion to a zirconia system and flexural strength. Dent Mater. 2011; 27: 1204-1212.doi.org/10.1016/j.dental.2011.08.006.
10. Ashok V, Suvitha S. Awareness of all ceramic restoration in rural population. Research J. Pharm. and Tech. 2016; 9(10):1691-1693.doi.org /10.5958/0974-360X.2016.00340.1
11. Ng J, Ruse D, Wyatt C. A comparison of the marginal fit ofcrowns fabricated with digital and conventional methods. J Prosthet Dent. 2014; 112:555-60. doi.org/10.1016/j.prosdent.2013.12.002
12. Kelly JR. Dental ceramics: Current thinking and trends. Dent Clin North Am. 2004;48:513-30.doi.org/ 10.1016/j.cden.2004.01.003.
13. Denry I, Kelly JR. State of the art of zirconia for dental applications. Dent Mater. 2008; 24:299-307. doi.org/10.1016/j.dental.2007.05.007
14. Kwon TK, Pak HS, Yang JH, Han JS, Lee JB, Kim SH, Yeo IS. Comparative fracture strength analysis of Lava and Digident CAD/CAM zirconia ceramic crowns. J Adv Prosthodont. 2013; 5: 92-7. doi.org/ 10.4047/jap.2013.5.2.92.
15. Latifa FE, Mohamed AA, Kesham AK, Iman AE. Effect of different of CAD/CAM techniques and on marginal accuracy, color matching and retention of cement versus screw retained implant supported crown. ADJ for Girls. 2019; 6(4):493-506. doi.org/10.21608/ADJG.2019.5480.1019
16. Santosh YD, Nikhil R, Sumit JD, Jitendra JM. In vitro comparison of marginal fit of cad/cam Zirconia, SMLS-Co-Cr, Pressable lithium disilicate and Cast Ni-Cr. Adv Dental & Oral Health. 2016; 2(2): 27-32. doi.org /10.19080/ADOH.2016.01.555581
17. Beuer F, Korczynski N, Rezac A, Naumann M, Gernet W, Sorensen JA. Marginal and internal fit of zirconia based fixed dental prostheses fabricated with different concepts. Clin CosmetInvestig Dent. 2010; 2:5-11.doi.org /10.2147/ccide.s6691
18. Lee KB, Park CW, Kim KH, Kwon TY. Marginal and internal fit of all-ceramic crowns fabricated with two different CAD/ CAM systems. Dent Mater J. 2008; 27:422-6. doi.org/10.4012/dmj.27.422.
19. Komine F, Iwai T, Kobayashi K, Matsumura H. Marginal and internal adaptation of zirconium dioxide ceramic copings and crowns with different finish line designs. Dent Mater. J. 2007; 26:659-64. https://doi.org/10.4012/dmj.26.659.
20. Comlekoglu M, Dundar M, Ozcan M, Gungor M, Gokce B, Artunc C. Influence of cervical finish line type on the marginal adaptation of zirconia ceramic crowns. Oper Dent. 2009;34:586-92.doi.org/10.2341/08-076-L
21. Att W, Komine F, Gerds T, Strub JR. Marginal adaptation of three different zirconium dioxide three-unit fixed dental prostheses. J Prosthet Dent. 2009; 101: 239-247. doi.org/10.1016/S0022-3913(09)60047-0.
22. Iwai T, Komine F, Kobayashi K, Saito A, Matsumura H. Influence of convergence angle and cement space on adaptation of zirconium dioxide ceramic copings. Acta Odontol Scand. 2008; 66: 214-218. doi.org/ 10.1080/00016350802139833
23. Kuni J, Hotta Y, Tamaki Y, Ozawa A, Kobayashi Y, Fujishima A, Miyazaki T, Fujiwara T. Effect of Sintering on the Marginal and Internal Fit of CAD/CAM-fabricated Zirconia Frameworks. Dent Mater. 2007; 26: 820-26.doi.org /10.4012/dmj.26.820.
24. Amuthavalli V, Manoharan PS, Shivasakthy M.A comparative evaluation of marginal fit of all ceramic crowns fabricated with zirconia cored crowns and monolithic crowns- An in vitro study. J Advan Clin Res Insig. 2020; 7:1-6.doi.org/10.15713/ins.jcri.287.
25. Yuji K, Mitsuyoshi T, Takamitsu K, Satoe S, Shunji F. Clinical marginal and internal gaps of zirconia all-ceramic crowns .J Prosthodont Res. 2011;55:40-3. doi.org/ 10.1016/j.jpor.2010.09.001.