scholarly journals Influence of some dental biomaterials on periodontal tissue

2015 ◽  
Vol 61 (2) ◽  
pp. 149-155
Author(s):  
A. Soancă ◽  
◽  
A. Roman ◽  
D. Condor ◽  
C. Cioban ◽  
...  
Keyword(s):  
Composite Materials ◽  
Material Degradation ◽  
Dental Tissue ◽  
Form And Function ◽  
Oral Environment ◽  
Present Composite ◽  
Natural Teeth ◽  
Dental Surface ◽  
And Function ◽  
Biological Durability

Dental biomaterials are designed to restore form and function of the dental tissue, to protect the remaining tissue and to create a bond between the dental surface and the restorative material. Due to their proximity to dental structures and oral mucosa, dental biomaterials must fulfil the requirements of biocompatibility and biological durability. The research in the field is focused on achieving these requirements by developing new highly performant biomaterials. But at present, composite materials still present some drawbacks like the polymerisation shrinkage associated to the curing process that leads to the adhesive interface breakdown and marginal microleakage. Composite materials may release substances into the oral environment during setting and later as a result of material degradation. Different side effects of composite materials and their components have been reported i.e. cytotoxic, teratogenic, carcinogenic, mutagenic or genotoxic. Despite the developments in the field, at present no „ideal“ restorative biomaterial with similar characteristics with the natural teeth and completely biocompatible is available. However, the application of strict clinical protocols may improve the above mentioned shortcomings.

Scanning tunneling microscopy (STM) of DNA and RNA

1989 ◽  
Vol 47 ◽  
pp. 34-35
Author(s):  
Patricia G. Arscott ◽  
Gil Lee ◽  
Victor A. Bloomfield ◽  
D. Fennell Evans
Keyword(s):  
Molecular Structures ◽  
Inorganic Materials ◽  
Resolving Power ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Form And Function ◽  
Dna And Rna ◽  
Calf Thymus ◽  
And Function ◽  
The Relationship

STM is one of the most promising techniques available for visualizing the fine details of biomolecular structure. It has been used to map the surface topography of inorganic materials in atomic dimensions, and thus has the resolving power not only to determine the conformation of small molecules but to distinguish site-specific features within a molecule. That level of detail is of critical importance in understanding the relationship between form and function in biological systems. The size, shape, and accessibility of molecular structures can be determined much more accurately by STM than by electron microscopy since no staining, shadowing or labeling with heavy metals is required, and there is no exposure to damaging radiation by electrons. Crystallography and most other physical techniques do not give information about individual molecules.We have obtained striking images of DNA and RNA, using calf thymus DNA and two synthetic polynucleotides, poly(dG-me5dC)·poly(dG-me5dC) and poly(rA)·poly(rU).

Re-examining the form and function of superstition

2011 ◽  
Author(s):  
Scott Fluke ◽  
Russell J. Webster ◽  
Donald A. Saucier
Keyword(s):  
Form And Function ◽  
And Function

A New Form and Function for Personality

2013 ◽  
Author(s):  
Joshua Wilt ◽  
William Revelle
Keyword(s):  
Form And Function ◽  
New Form ◽  
And Function

Ausnahmesegment

2018 ◽  
Vol 48 (191) ◽  
Author(s):  
Barbara Schönig
Keyword(s):  
Welfare State ◽  
Social Housing ◽  
Integrated Approach ◽  
New Paradigm ◽  
Development Models ◽  
Form And Function ◽  
Institutional Organization ◽  
National Welfare ◽  
And Function ◽  
The Welfare State

Going along with the end of the “golden age” of the welfare state, the fordist paradigm of social housing has been considerably transformed. From the 1980s onwards, a new paradigm of social housing has been shaped in Germany in terms of provision, institutional organization and design. This transformation can be interpreted as a result of the interplay between the transformation of national welfare state and housing policies, the implementation of entrepreneurial urban policies and a shift in architectural and urban development models. Using an integrated approach to understand form and function of social housing, the paper characterizes the new paradigm established and nevertheless interprets it within the continuity of the specific German welfare resp. housing regime, the “German social housing market economy”.

Form and Function of the Classical Cadenza

1988 ◽  
Vol 6 (1) ◽  
pp. 27-59 ◽  
Author(s):  
Joseph P. Swain
Keyword(s):  
Form And Function ◽  
And Function

Form and function in ant nests

2016 ◽  
Author(s):  
Walter R. R. Tschinkel
Keyword(s):  
Form And Function ◽  
Ant Nests ◽  
And Function
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