Soft line

The aim of the study was to investigate the tensile strength of three silicone elastomers A-Soft line 30, Elite Super Soft and Bosworth Dentusil and compare the findings with previously evaluated material, Ufi Gel SC. 

Analysis of the tensile strength tests of the A-Soft Line 30 material revealed findings ranging from 6.15N to 14.35N. Calculated mean value was 9.63N (Table 1). IN case of Bosworth Dentusil the tensile strengfli ranged from LOON to 12.35N, and the mean value was 7.50N (Table 2). Evaluation of Elite Super Soft revealed the tensile strength ranging from 5.15N to 9.65N, while the mean value was 7.29N (Table 3). 

TABLE 1 Investigation of tensile strength of A-Soft Line 30. 

Ufi Gel SC is characterized by the best tensile strength, followed by A-Soft Line 30, Bosworth Dentusil and Elite Super Soft. 

Tasopoulos, T dagger, R. G. dagger, D. C. Griffiths, A. E. Eneigy absorption and hardness of chair-side denture soft lining materials. Eur. J. Pmsthodont Rest. Dent., 2010,18(4), 189-194. 

Santawisuk, W. Kanchanavasita, W. Sirisinha, C. Hamirattisai, C. Dynamic viscoelastic properties of experimental silicone soft lining materials. Dent. Mater J., 2010, 29(41,454-460. 

Frazier, R.M. 1986. Quick response in soft lines. Discount Merchandiser. January. 86-89. 

Saber-Sheikh, K., Clarke, R. L. Braden, M. (1999) Viscoelastic properties of some soft lining materials. II Ageing characteristics. Biomaterials, 20, 2055-2062. 

Wilson, H. J. Tomlin, H. R. (1969) Soft lining materials some relevant properties and their determination. Journal of Prosthetic Dentistry, 21, 244—250. 

The influence of microwave irradiation on the polymerization process of silicone rubber denture soft lining material to PMMA, and its properties were studied by Wright et al. [65]. Three groups of specimens were polymerized under micro-wave irradiation at 650 W for 3, 5, and 10 min in a household microwave oven. The fourth group of specimens was polymerized using conventional thermal methods, i.e., by boiling in a water bath for 2 h. The study demonstrated that mi-... 

The nebulizer gas flow and power, and the observation height are also important parameters to optimize. Such multivariate optimizations can be done by single-factor studies or Simplex optimization [240], [241]. The nebulizer gas influences the aerosol droplet size, nebulizer efficiency, and plasma temperature. For each element and line there is a rather sharp optimum for the aerosol gas flow where the SBR is maximum. The power determines mainly the plasma volume and is optimum for soft lines (atomic and ionic lines of elements with low ionization potential) at rather... 

Figure 3.11 shows a plot of the values of versus a for 17 metal ions (Yingst and McDaniel, 1967 cited by Jolly 1970, p. 53). Superimposed is a suggestion of part of a new coordinate system (effectively a rotation of the original coordinate system), softness (and strength, not shown). Except for the point for Zrf, which is classified by Pearson as borderhne but which nearly coincides with the hard Mg, the zero softness line (the borderline ) divides the hard from the soft ions. The softness coordinate shown is approximately represented by Equation 3.22. Values of a, f, and are listed in Table 3.3 ... 

Dowson, D., (2001), Prediction of lubricating film thickness in a ball-in-socket model with a soft lining representing human natural and artificial hip joints. Proceedings of the Institution of Mechanical Engineers, Part J, Engineering Tribology, Volume 215, No. J4, pp 363-372. 

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