Marginal Accuracy of Cast Crowns Fabricated Using Different Investment Systems (An In -Vitro Study)

Main Article Content

Radhika Agnihotri
Kartik Morjaria
Kalpesh Vaishnav
Dipti Shah
Ravi Joshi
Miloni Bhatt
Khushbu Baraiya

Abstract

Context: Any dental restoration's marginal fit is very important for its success. The teeth and the adjacent periodontal tissues- both may suffer from an inadequate fit. Aims: to assess how various investment systems affect the marginal accuracy of cast crowns.  Method: A total of 60 complete coverage crowns made entirely using metal on metal dies. The crowns were separated into 4 groups each with 15 patterns.  For investing and casting a ringless system and a ring system (split)  were used in group B and group A respectively.  In Group C metal rings with single layer cellulose acetate liners devoid of asbestos is used and Group D metal rings with double-layer cellulose acetate liners devoid of asbestosis used. By measuring the distance with a microscope between the die's finish line and the edges of the crown, marginal discrepancy was determined. Results Groups -A, B, C, D -each had a mean marginal disparity of 113µm, 210µm, 206µm, and 161µm, respectively. The 4 groups' marginal discrepancies on each surface were compared. Of the four groups, Group A was the most accurate, while Group B was the least accurate. Conclusion: The ringless casting process can result in with better marginal fit due to accurate casting.

Article Details

How to Cite
Radhika Agnihotri, Kartik Morjaria, Kalpesh Vaishnav, Dipti Shah, Ravi Joshi, Miloni Bhatt, & Khushbu Baraiya. (2022). Marginal Accuracy of Cast Crowns Fabricated Using Different Investment Systems (An In -Vitro Study). Journal of Coastal Life Medicine, 10(3), 274–282. Retrieved from https://www.jclmm.com/index.php/journal/article/view/190
Section
Articles

References

Att W, Hoischen T, Gerds T, Marginal Adaptation of All Ceramic Crowns on Implant Abutments Clinical Implant Dentistry and Related Research, 2008;10(4).

Hunter AJ, Hunter AR. Gingival margins for crowns: a review and discussion. Part II: Discrepancies and configurations. J Prosthet Dent 1990;64:636-642.

Subasi G., Ozturk N., Inan O. and Bozogullari N. Evaluation of marginal fit of two all-ceramic copings with two finish lines. Eur J Dent 2012; 6:163-16.

Shah DS, Vaishnav K, Duseja S, Joshi R, Clinical Evaluation of fixed dental prosthesis failures in Indian Population: An In Vivo Study. Adv Hum Biol. 2014;4(3):37-43.

Quante K, Ludwing K, Kern M. Marginal and internal fit of metal ceramic crowns fabricated with a new laser melting technology. Dent Mater 2008;24:1311-15.

Vigolo P, Fonzi F. An in vitro evaluation of fit of zirconium-oxide-based ceramic four-unit fixed partial dentures, generated with three different CAD/CAM systems, before and after porcelain firing cycles and after glaze cycles. J Prosthodont 2008; 17:621-6.

Jahangiri L, Wahlers Hinclman E, matherson p. Assessment of sensitivity and specificity of clinical evaluation of cast restoration marginal accuracy compared to stereomicroscope. J Prosthet dent 2005; 93:138-42.

Holmes JR, Bayne SC, Holland GA, Sulik WD . Consideration in measurement of marginal fit, J Prothet Dent 1986;62:405-8.

Mejia R, Tobon SM. Marginal fit of metal ceramic restorations subjected to a standardized post soldering technique. J Prosthet Dent 2000;83:535-9.

Lirnkangwalmongkol p, chiche GJ, Blatz MB, Precision of fit of two margin designs for metal ceramic crowns. J Prosthodent 2007;16:233-7.

Foster LV. Failed conventional bridge work from general dental practice: clinical aspects and treatment needs of 142 cases. Br. Dent J 1990;168:199-201.

Soriani NC, Leal MB, paulino SM, Pagnano VO, Bezzon OL. Effect of the use of die spacer on marginal fit of copings cast in NiCrBe and commercially pure titanium. Braz dent j 2007;18:225-30.

Kokubo Y, Ohkubo C, Tsumita M, Miyashita A, Vult von Steyern P, Fukushima S, Clinical marginal and internal gaps of procera all ceram crowns. J Oral Rehabil 2005;32:526-30.

Tjan AH, Li T, Logan GI, Baum L. Marginal accuracy of complete crowns made from alternative casting alloys. J Prosthet dent 1991;66:157-64.

Christensen GJ. Marginal fit of gold inlay castings. J Prosthet Dent 1966;16:297- 302

McLean JW, von Fraunhofer JA. The estimation of cement film thickness by an in-vivo technique. Br Dent J 1971; 131:107-11.

Moldovan O, Rudolph H, Quaas S, Bornemann G, Luthardt RG. Internal and external fit of CAM-made zirconia bridge frameworks-a pilot study. Dtsch Zahnärztlz 2006; 61: 38-42.

Schwickerath H., Dtsch Zahnärztl Z Marginal cleft and solubility 1979;34:664- 669.

Duncan J.D. The casting accuracy of nickel-chromium alloys for fixed prosthesis. J. Prosthetic. Dent 1982;47(1)63-68.

M Kalavathi, Bhuvana Sachin, BG Prasanna, TV Shreeharsha, B Praveen, Mallikarjuna Ragher Marginal Accuracy of casting Fabricated with ringless Cating investment system and metal ring casting investment system: A Comparative Study The Journal of contemporary dental practice 2016;17(2):165-170.

Pjetursson BE, Sailer I, Zwahlen M, Hammerle CH A systematic review of the survival and complication rates of allceramic and metal-ceramic reconstructions after an observation period of at least 3 years. Part I: single crowns. Clin Oral Implants Res 2007;8(3):73-85.

Fransson B, Oilo G, Gjeitanger R., The fit of metal-ceramic crowns, a clinical study. Dent Mater 1985;1:197-199.

Sandeep kumar, Rajnish Aggarwal, Sunita Chodhary, Ritwik Tyagi, Nikki Saini Comparative Analysis of Marginal Accuracy of Complete Crwons Fabricated by using Ringless and Metal Ring Investment Systems: An In Vitro Study, The Journal of contemporary dental practice 2020;21(8):852-856.

Taggart WH. A new and accurate method of making gold inlays. Dent Cosmos 1907:49:1117-21.

Council on Dental Materials, Instruments, and Equipment. Vinyl polysiloxane impression materials: A status report. J Am Dent Assoc 1990;120:595, 596, 598, 600.

Chaffee NR, Bailey JH, Sherrard DJ. Dimensional accuracy of improved dental stone and epoxy resin die materials. Part II: Complete arch form. J Prosthet Dent 1997;77:235-238.

Rosenthiel SF, Land MF, Fujimoto J.Contemporary Fixed Prosthodontics, ed 2. St Louis: Mosby, 1995:361-487.

Padilla MT, Bailey JH.Margin configuration, die spacers, fitting of retainers/crowns, and soldering.Dent Clin North Am 1992;36:743-764.

Petteno D, Schierano G, Bassi F, Bresciano ME, Carossa S.Comparison of marginal fit of 3 different metal-ceramic systems: An in vitro study. Int J Prosthodont 2000;13:405-408.

Leong D, Chai J, Lautenschlager E, Gilbert J.Marginal fit of machine-milled titanium and cast titanium single crowns. Int J Prosthodont 1994;7:440-447.

Anusavice KJ. Dental casting alloys. In: Phillips' Science of Dental Materials, ed 10. Philadelphia: Saunders, 1986:491-524.

Hollenback GM, Shell JS. A further evaluation of the theory of compensation. J South Calif Dent Assoc 1965:33:315-7.

Morey EF. Dimensional accuracy of gold alloy castings. Part 2. Gold alloy shrinkage. Aust Dent J 1991,36:391-6.

Morey EF. Dimensional accuracy of gold alloy castings. Part 1. A brief history and the behaviour on inlay waxes. Aust Dent J 1991;36:302-9.

Morey EF. Dimensional accuracy of gold alloy castings. Part 3. Gypsumbonded investment expansion. Aust Dent J 1992:37:43-54.

Earnshaw R. Investments for casting cobalt chromium alloys. Br Dent J 1960;108:389-96,429-40.