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http://dx.doi.org/10.4047/jap.2015.7.1.27

In vitro study of fracture strength of provisional crown materials  

Karaokutan, Isil (Department of Prosthodontics, Faculty of Dentistry, Selcuk University)
Sayin, Gulsum (Department of Prosthodontics, Faculty of Dentistry, Medipol University)
Kara, Ozlem (Department of Prosthodontics, Faculty of Dentistry, Bezmialem Vakif University)
Publication Information
The Journal of Advanced Prosthodontics / v.7, no.1, 2015 , pp. 27-31 More about this Journal
Abstract
PURPOSE. The purpose of this report was to evaluate the effect of the fabrication method and material type on the fracture strength of provisional crowns. MATERIALS AND METHODS. A master model with one crown (maxillary left second premolar) was manufactured from Cr-Co alloy. The master model was scanned, and the data set was transferred to a CAD/CAM unit (Yenamak D50, Yenadent Ltd, Istanbul, Turkey) for the Cercon Base group. For the other groups, temporary crowns were produced by direct fabrication methods (Imident, Temdent, Structur Premium, Takilon, Systemp c&b II, and Acrytemp). The specimens were subjected to water storage at $37^{\circ}C$ for 24 hours, and then they were thermocycled (TC, $5000{\times}$, $5-55^{\circ}C$) (n=10). The maximum force at fracture (Fmax) was measured in a universal test machine at 1 mm/min. Data was analyzed by non-parametric statistics (${\alpha}$=.05). RESULTS. Fmax values varied between 711.09-1392.1 N. In the PMMA groups, Takilon showed the lowest values (711.09 N), and Cercon Base showed the highest values (959.59 N). In the composite groups, Structur Premium showed the highest values (1392.1 N), and Acrytemp showed the lowest values (910.05 N). The composite groups showed significantly higher values than the PMMA groups (P=.01). CONCLUSION. Composite-based materials showed significantly higher fracture strengths than PMMA-based materials. The CADCAM technique offers more advantages than the direct technique.
Keywords
Temporary crown; Provisional restoration; Composite; Methyl methacrylate; Fracture strength; CAD-CAM;
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1 Shillingburg HT, Sumiya H, Lowell DW, Jacobi R, Brackett SE. Fundamentals of fixed prosthodontics. 3. Auflage. Chicago: Quintessence; 1997.
2 Burns DR, Beck DA, Nelson SK; Committee on Research in Fixed Prosthodontics of the Academy of Fixed Prosthodontics. A review of selected dental literature on contemporary provisional fixed prosthodontic treatment: report of the Committee on Research in Fixed Prosthodontics of the Academy of Fixed Prosthodontics. J Prosthet Dent 2003;90: 474-97.   DOI
3 Gough M. A review of temporary crowns and bridges. Dent Update 1994;21:203-7.
4 Anusavice KJ. Phillips' science of dental materials. 10th ed. Philadelphia; WB Saunders; 1996; p. 285-431.
5 Gegauff AG, Holloway JA, Rosenstiel SF, Land MF, Fujimoto J. Contemporary fixed prosthodontics. 3rd ed. Mosby, St. Louis; 2001; p. 380-416.
6 Kim SH, Watts DC. In vitro study of edge-strength of provisional polymer-based crown and fixed partial denture materials. Dent Mater 2007;23:1570-3.   DOI
7 Burke FJ, Murray MC, Shortall AC. Trends in indirect dentistry: 6. Provisional restorations, more than just a temporary. Dent Update 2005;32:443-4, 447-8, 450-2.   DOI
8 Rosentritt M, Behr M, Lang R, Handel G. Flexural properties of prosthetic provisional polymers. Eur J Prosthodont Restor Dent 2004;12:75-9.
9 Koumjian JH, Nimmo A. Evaluation of fracture resistance of resins used for provisional restorations. J Prosthet Dent 1990;64:654-7.   DOI
10 Young HM, Smith CT, Morton D. Comparative in vitro evaluation of two provisional restorative materials. J Prosthet Dent 2001;85:129-32.   DOI
11 Diaz-Arnold AM, Dunne JT, Jones AH. Microhardness of provisional fixed prosthodontic materials. J Prosthet Dent 1999;82:525-8.   DOI
12 Ireland MF, Dixon DL, Breeding LC, Ramp MH. In vitro mechanical property comparison of four resins used for fabrication of provisional fixed restorations. J Prosthet Dent 1998;80:158-62.   DOI
13 Osman YI, Owen CP. Flexural strength of provisional restorative materials. J Prosthet Dent 1993;70:94-6.   DOI
14 Wang RL, Moore BK, Goodacre CJ, Swartz ML, Andres CJ. A comparison of resins for fabricating provisional fixed restorations. Int J Prosthodont 1989;2:173-84.
15 Balkenhol M, Ferger P, Mautner MC, Wostmann B. Provisional crown and fixed partial denture materials: mechanical properties and degree of conversion. Dent Mater 2007;23:1574-83.   DOI
16 Poticny DJ, Klim J. CAD/CAM in-office technology: innovations after 25 years for predictable, esthetic outcomes. J Am Dent Assoc 2010;141:5S-9S.   DOI
17 McLean JW. The failed restoration: causes of failure and how to prevent them. Int Dent J 1990;40:354-8.
18 Balkenhol M, Knapp M, Ferger P, Heun U, Wostmann B. Correlation between polymerization shrinkage and marginal fit of temporary crowns. Dent Mater 2008;24:1575-84.   DOI
19 Gougaloff R, Stalley FC. Immediate placement and provisionalization of a dental implant utilizing the CEREC 3 CAD/CAM Protocol: a clinical case report. J Calif Dent Assoc 2010;38:170-3, 176-7.
20 Ozcan M, Nijhuis H, Valandro LF. Effect of various surface conditioning methods on the adhesion of dual-cure resin cement with MDP functional monomer to zirconia after thermal aging. Dent Mater J 2008;27:99-104.   DOI
21 Pisani-Proenca J, Erhardt MC, Valandro LF, Gutierrez- Aceves G, Bolanos-Carmona MV, Del Castillo-Salmeron R, Bottino MA. Influence of ceramic surface conditioning and resin cements on microtensile bond strength to a glass ceramic. J Prosthet Dent 2006;96:412-7.   DOI
22 Alt V, Hannig M, Wostmann B, Balkenhol M. Fracture strength of temporary fixed partial dentures: CAD/CAM versus directly fabricated restorations. Dent Mater 2011;27: 339-47.   DOI
23 Balkenhol M, Meyer M, Michel K, Ferger P, Wostmann B. Effect of surface condition and storage time on the repairability of temporary crown and fixed partial denture materials. J Dent 2008;36:861-72.   DOI
24 Balkenhol M, Mautner MC, Ferger P, Wostmann B. Mechanical properties of provisional crown and bridge materials: chemical-curing versus dual-curing systems. J Dent 2008;36: 15-20.
25 Nejatidanesh F, Momeni G, Savabi O. Flexural strength of interim resin materials for fixed prosthodontics. J Prosthodont 2009;18:507-11.   DOI
26 Kerby RE, Knobloch LA, Sharples S, Peregrina A. Mechanical properties of urethane and bis-acryl interim resin materials. J Prosthet Dent 2013;110:21-8.   DOI
27 Knobloch LA, Kerby RE, Pulido T, Johnston WM. Relative fracture toughness of bis-acryl interim resin materials. J Prosthet Dent 2011;106:118-25.   DOI
28 Cheng CJ, Lin CL, Shan YF. Multifactorial analysis of variables influencing the fracture strength of repair joints for provisional restorative materials using the statistically based Taguchi method. J Dent Sci 2010;5:90-9.   DOI
29 Lang R, Rosentritt M, Behr M, Handel G. Fracture resistance of PMMA and resin matrix composite-based interim FPD materials. Int J Prosthodont 2003;16:381-4.
30 Pihut M, Wisniewska G, Majewski P, Gronkiewicz K, Majewski S. Measurement of occlusal forces in the therapy of functional disorders with the use of botulinum toxin type A. J Physiol Pharmacol 2009;60:113-6.
31 Tortopidis D, Lyons MF, Baxendale RH, Gilmour WH. The variability of bite force measurement between sessions, in different positions within the dental arch. J Oral Rehabil 1998;25:681-6.   DOI