Temperature changes and compressive properties of bulk-fill composites by light curing

다국어 초록 (Multilingual Abstract)

The purpose of the present study was to assess the temperature change and compressive property of bulk-fill composites (BFCs) by the light curing. Seven resin-based composites (RBCs), including five BFCs, were chosen to evaluate their maximum temperature rise and exothermic heat during and after light curing and compressive strength (CS) and modulus (CM) for 4-mm thick state. Light attenuation coefficients (ACs) showed reasonably high correlation with filler content (vol% and wt%). Except one resin product, AC values of BFCs were lower than those of RBCs tested. All the tested specimens showed temperature rise (9.8-23.6℃) and exothermic heat (4.2-18.3℃) for 4-mm thick case. CS and CM values of the tested specimens ranged approximately 69 to 116 MPa and 1.3 to 2.8 GPa, respectively. The difference of temperature changes and compressive properties (CS and CM) between BFCs and RBCs was not consistent and had no statistically consistent significance.

참고문헌 (Reference)

1 이창하, "여러 색상으로 적층된 복합레진의 색과 투명도" 대한치과재료학회 43 (43): 369-377, 2016

2 Bouillaguet S, "Thermal risks from LED-and high-intensity QTH-curing units during polymerization of dental resins" 72 (72): 260-267, 2005

3 Kim KH, "The effect of filler loading and morphology on the mechanical properties of contemporary composites" 87 (87): 642-649, 2002

4 Watts DC, "Temperaturedependence of compressive properties of human dentin" 66 (66): 29-32, 1987

5 Lloyd CH, "Temperature rises produced by light sources and composites during curing" 2 (2): 170-174, 1986

6 Ferracane JL, "Resin composite-state of the art" 27 (27): 29-38, 2011

7 Howard B, "Relationships between conversion, temperature and optical properties during composite photopolymerization" 6 (6): 2053-2059, 2010

8 Zach L, "Pulp response to externally applied heat" 19 : 515-530, 1965

9 Leprince JG, "Progress in dimethacrylate-based dental composite technology and curing efficiency" 29 (29): 139-156, 2013

10 Uhl A, "Polymerization and light-induced heat of dental composites cured with LED and halogen technology" 24 (24): 1809-1820, 2003

11 Fronza BM, "Monomer conversion, microhardness, internal marginal adaptation, and shrinkage stress of bulk-fill resin composites" 31 (31): 1542-1551, 2015

12 Price RB, "Light-Curing Units : A Review of What We Need to Know" 94 (94): 1179-1186, 2015

13 Ilie N, "Investigations on mechanical behaviour of dental composites" 13 (13): 427-438, 2009

14 Leprince J, "Investigating filler morphology and mechanical properties of new low-shrinkage resin composite types" 37 (37): 364-376, 2010

15 Czasch P, "In vitro comparison of mechanical properties and degree of cure of bulk fill composites" 17 (17): 227-235, 2013

16 Park J, "How should composite be layered to reduce shrinkage stress:incremental or bulk filling?" 24 (24): 1501-1505, 2008

17 박완기, "Effect of layer combinations with nanocomposite and low-shrinkage composite resins on their color and mechanical properties" 대한치과재료학회 44 (44): 129-139, 2017

18 Arikawa H, "Effect of filler properties in composite resins on light transmittance characteristics and color" 26 (26): 38-44, 2007

19 Stansbury JW, "Dimethacrylate network formation and polymer property evolution as determined by the selection of monomers and curing conditions" 28 (28): 13-22, 2012

20 Stansbury JW, "Curing dental resins and composites by photopolymerization" 12 (12): 300-308, 2000

21 Margeas RC, "Bulk-fill materials : simplify restorations, reduce chairtime" 36 (36): e1-e4, 2015

22 Hickey D, "Bulk dentine replacement versus incrementally placed resin composite : A randomised controlled clinical trial" 46 (46): 18-22, 2016

23 Jandt KD, "A brief history of LED photopolymerization" 29 (29): 605-617, 2013