Paper: New Flowable Composite With Low Shrinkage And Excellent Physical Properties (AADR Annual Meeting (March 21-24, 2012))

Friday, March 23, 2012: 2 p.m. - 3:15 p.m.

Presentation Type: Poster Session

V. BUI, A. KOBASIGAWA, H. GARZA, L. HOANG, W. HUANG, and D. TOBIA, Kerr Corporation, Orange, CA

Objective: Compare physical properties of new Kerr nano-hybrid flowable composite to 4 commercial flowable composites.

Method: Degree of conversion (DC, n=3) using FT-IR, polymerization shrinkage (VS, n=3) using buoyancy method, Radiopacity, flexural strength (FS, n=5), and flexural modulus (FM, n=5) per ISO4049, and compressive strength (CS, n=5) and diametrial tensile strength (DTS, n=5) using a universal testing machine were determined for A2 shade (Abst. #534, IADR 2001). Specimens were polymerized following manufacturer instructions. Statistical analysis of the data was performed using one-way ANOVA Test (p<0.05).

Result: The table below summarizes test results. For each column, similar letters indicate that no statistical differences were found.

Materials

DC (%)

VS(%)

Radiopacity (%Al)

FS(MPa)

FM(MPa)

CS(MPa)

DTS(MPa)

Kerr Exp. Flowable

52 (0.8)^a

2.7(0.2)^c

350

139(5)^a

6680(280)^c

361(34)^b

56(10)^a,b

Filtek Supreme Ultra Flow

47 (3.2)^b

3.3 (0.1)^b

250

127(21)^a

7474(159)^b

360(16)^b

56(5)^a,b

Tetric Evoflow

43 (2.3)^b

3.9 (0.3)^a

350

113(13)^a

5378(243)^d

455(17)^a

43(2)^c

Esthet X flow

47 (0.8)^b

3.5 (0.1)^a,b

275

120(9)^a

6644(298)^c

352(28)^b

50(4)^b,c

Estelite Flow Quick

46 (1.3)^b

3.4 (0.3)^a,b

<200

140(26)^a

9022(406)^a

500(23)^a

64(7)^a

Conclusion: Among the examined products, Kerr experimental nano-hybrid flowable composite showed high degree of conversion, low volume shrinkage, high radiopacity, and excellent physical properties.

Keywords: Composites, Hardness, Physical, Polymerization and low shrinkage

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Materials	DC (%)	VS(%)	Radiopacity (%Al)	FS(MPa)	FM(MPa)	CS(MPa)	DTS(MPa)
Kerr Exp. Flowable	52 (0.8)^a	2.7(0.2)^c	350	139(5)^a	6680(280)^c	361(34)^b	56(10)^a,b
Filtek Supreme Ultra Flow	47 (3.2)^b	3.3 (0.1)^b	250	127(21)^a	7474(159)^b	360(16)^b	56(5)^a,b
Tetric Evoflow	43 (2.3)^b	3.9 (0.3)^a	350	113(13)^a	5378(243)^d	455(17)^a	43(2)^c
Esthet X flow	47 (0.8)^b	3.5 (0.1)^a,b	275	120(9)^a	6644(298)^c	352(28)^b	50(4)^b,c
Estelite Flow Quick	46 (1.3)^b	3.4 (0.3)^a,b	<200	140(26)^a	9022(406)^a	500(23)^a	64(7)^a

863 New Flowable Composite With Low Shrinkage And Excellent Physical Properties