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A study on the material properties of various composite resins for core build-up


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A study on the material properties of various composite resins for core build-up

Article information

Restor Dent Endod. 2004;29(2):191-199
Publication date (electronic) : 2004 March 31
doi : https://doi.org/10.5395/JKACD.2004.29.2.191
Soo-Il Shin, Dong-Hoon Shin
Department of Conservative Dentistry, College of Dentistry, Dankook University, Korea.
Corresponding author: Dong-Hoon Shin. Department of Conservative Dentistry, School of Dentistry, Dankook University, San 7-1, Shinbu-dong, CheanAn, ChungNam, Korea, 330-716. Tel: 82-41-550-1965, Fax: 82-41-550-1963, donyshin@dku.edu

Abstract

The purposes of this study were to estimate the material properties of the recently developed domestic composite resins for core filling material (Chemical, Dual A, Dual B; Vericom, Korea) and to compare them with other marketed foreign products (CorePaste, Den-Mat, USA; Ti-Core, Essential Dental Systems, USA; Support, SCI-Pharm, USA). Six assessments were made; working time, setting time, depth of polymerization, flexural strength, bonding strength, and marginal leakage. All items were compared to ISO standards.

All domestic products satisfied the minimum requirements from ISO standards (working time: above 90 seconds, setting time: within 5 minutes), and showed significantly higher flexural strength than Core Paste. Dual A and B could, especially, reduce the setting time to 60 seconds when cured with 600 mW/cm2 light intensity. All experimental materials showed 6 mm depth of polymerization.

Bond strengths of Ti-Core and Dual B materials were significantly higher than the other materials. Furthermore, three domestic products and Ti-Core could reduce the microleakage effectively.

Keywords: Core build-up; Working time; Setting time; Depth of polymerization; Flexural strength; Bond strength; Microleakage

References

1. Sorensen JA, Martinoff JT. Intracoronal reinforcement and coronal coverage: A study of endodontically treated teeth. J Prosthet Dent 1984. 51780–784.
2. Combe EC, Shaglouf A-MS, Watts DC, Wilson NHF. Mechanical properties of direct core build-up materials. Dent Mater 1999. 15158–165.
3. Cohen S, Burns RC. Pathway of the pulp 1999. 7th editionth ed. Mosby; 703–704.
4. Saygili G, Mahmali SM. Comparative study of the Physical properties of core materials. Int J Periodontics Restorative Dent 2002. 22(4)355–363.
5. O'Keefe KL, Power JM. Adhesion of resin composite core materials to dentin. Int J Prosthodont 2001. 14(5)451–456.
6. Tjan AHL, Dunn JR, Lee JKY. Fracture resistance of amalgam and composite resin cores retained by various intradentinal retentive features. Quintessence Int 1993. 24211–217.
7. Ziebert AJ, Dhuru VB. The fracture toughness of various core materials. J Prosthodont 1995. 433–37.
8. Ryu KH, Choi HY, Choi KK, Park SJ. A Study on the Mechanical Properties of Experimental, Composites Containing Zirconia Filler. J Korean Acad Conserv Dent 2000. 25(3)421–434.
9. Taleghani M, Bokmeyer T. Evaluation of titanium reinforced composite as a core build-up material (astr). J Dent Res 1992. 721947.
10. Cohen BI, Deutsch AS, Condos S, Musikant BL, Scherer W. Compressive and diametral tensile strenghth of titanium reinforced composites. J Esthet Dent 1992. 4suppl. 50–55.
11. Sturdevant CM. The art and science of operative dentistry 1994. 3rd editionth ed. Mosby; 279–280.
12. Johnson JK, Shwartz NL, Backwell RI. Evaluation and restoration of endodontically treated posterior teeth. J Am Dent Assoc 1976. 93597–605.
13. Plasmans PJ, Vesseren LGH, Vrijhoef MMA, Kyser AF. In vitro comparison of dowel and core techniques for endodontically treated molars. J Endod 1986. 12382–387.
14. Rosen H. Operative procedures in mutilated endodontically treated posterior teeth. J Prosthet Dent 1961. 11973–986.
15. Varga J, Matsumara H, Masuhara E. Bonding of amalgam filling to tooth cavity with adhesive resin. Dent Mater J 1986. 5158–164.
16. Schwartz RS, Summitt JB, Robbins JW. Fundamentals of operative dentistry 1996. 1st editionth ed. USA: Quintessence Publishing Co., Ltd; 149.
17. Hwang IN. Core Material Selection and Procedure. J Korean Dent Assoc 2001. 39(2)29–34.
18. Wilson AD, Kent BE. The glass-ionomer cement, a new translucent cement for dentistry. J Appl Chem Biotechnol 1971. 21313.
19. Mount GJ. Glass-ionomer cements: Past, present and future. Oper Dent 1994. 1982–90.
20. Burgess J, Norling B, Summitt J. Resin ionomer restorative materials: The new generation. J Esthet Dent 1994. 6207–215.
21. Sidhu SK, Watson TF. Resin ionomer restorative materials: The new generation. Am J Dent 1995. 859.
22. Oliva RA, Lowe JA. Dimensional stability of composite used as a core material. J Prosthet Dent 1986. 56554–561.
23. Cook WD, Forrest M, Goodwin AA. A simple method for the measurement of polymerization shrinkage in dental composites. Dent Mater 1999. 15(6)447–449.
24. Davidson CS, de Gee AJ. Relaxation of polymerization contraction stress by flow in dental composites. J Dent Res 1984. 63146–148.
25. Lutz F, Krejci I, Oldenburg TR. Elimination of polymerization stresses at the margins of posterior composite resin restorations: A new restorative technique. Quintessence Int 1986. 17659–664.
26. Imai Y, Kadoma Y, Kojima K, Akimoto T, Ikakura K, Ohta T. Importance of polymerization initiator systems and interfacial initiation of polymerization in adhesive bonding of resin to dentin. J Dent Res 1991. 701088–1091.
27. Torstenson B, Branstrom M. Contraction gap under composite resin restoration. ; effect hygroscopic expansion and thermal stress. Oper Dent 1988. 1324–31.
28. Cattani-Lorente MA, Dupuis V, Payan J, Moya F, Meter JM. Effect of water on the physical properties of resin-modified glass ionomer cements. Dent Mater 1999. 1571–78.
29. Craig RG. Restorative dental materials 1997. 10th editionth ed. St Louis: Mosby;
30. Levartovsky S, Kuyinu E, Georgescu M, Goldstein GR. A comparison of the diametral tensile strength, the flexural strength, and the compressive strength of two new core materials to a silver alloy-reinforced glass-ionomer material. J Prosthet Dent 1994. 72481–485.
31. Matsumura H, Sueyoshe M, Atsuta M. Radiopacity and physical properties of titanium-polymethacrylate composite. J Dent Res 1992. 71(1)2–6.
32. Abdalla A, Davison C. Shear bond strength and microleakage of new dentin bonding systems. Am J Dent 1993. 6(6)295–298.
33. Loiselle RJ, Goldberg AP, Gross RL, Stuever CH. Marginal microleakage-an in vivo assessment. J Am Dent Assoc 1969. 78758–760.
34. Barnes DM, Thomson VP, Blank LW, McDonald NJ. Microleakage of class V composite resin restorations: a comparison between in vivo and in vitro. Oper Dent 1993. 18237–245.
35. Ryu JH, Park DS, Kwon HC. Microleakage of Current Dentin Bonding Systems. J Korean Acad Conserv Dent 1999. 24(1)55–66.

Article information Continued

Copyright © 2004 Korean Academy of Conservative Dentistry
(open-access) :

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Figure 1

Figure 1

Ti-Core: Temperature changes during auto or chemically cure

Table 1

Materials used in the study

Table 1

Table 1

Work Time of materials (seconds)

Table 1

Table 2

Setting time when auto-cured (seconds)

Table 2

Table 3

Maximum setting temperature when auto-cured (℃)

Table 3

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

Table 4

Setting time when light cured (seconds)

Table 4

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

Table 5

Maximum setting temperature when light cured (℃)

Table 5

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

Table 6

Flexural Strength of core materials (MPa)

Table 6

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

Table 7

Adhesive strength of core materials (Kgf)

Table 7

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

Table 8

Microleakage scores

Table 8

Mean values designated with the same superscript letter are not statistically different (p > 0.05)