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- Dawson, Victoria, et al.
(författare)
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Coronal Restoration of Root-filled Teeth : General Dental Practitioners' Decision-Making Process
- 2019
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Objectives: A better outcome has been shown for teeth restored with laboratory-fabricated crowns. This may not necessarily imply that full crowns are better than direct restorations, as it may be a result of selection bias. The aim was to describe the decision process regarding the choice of coronal restoration on a root-filled tooth from the perspective of the dentist. Methods: A strategic selection of 15 general dental practitioners (GDPs) in Sweden was performed. An absolute inclusion criterion was that the dentist had a recent experience of root canal treatments followed by a decision concerning permanent coronal restoration. The included dentists provided a variation concerning gender, age, work experience, location of undergraduate education and dental service provider. Semi-structured in-depth interviews were conducted with focus on the personal experience of the informant when choosing how to permanently restore the root-filled tooth. The informants were invited to, in their own words, narrate on the two latest occasions when this situation occurred for direct and full crown restorations respectively. The interviews were verbatim transcribed and then analyzed according to Qualitative Content Analysis, to be classified into an overall theme covering the latent content together with categories and subcategories illustrating the manifest content. Results: Preliminary results indicate a pattern, not yet definitely classified, but revealing the GDPs' efforts to take their current theoretical knowledge and clinical experience into consideration in the decision-making process together with an assessment of the residual tooth substance and the patients' oral health conditions. This is done parallel to an evaluation of and with certain emphasis to the patients' economic situation and preferences. Conclusions: The general dental practitioners' decision-making process regarding the choice of coronal restoration on a root-filled tooth was based not only on clinical factors: decisive for the decision was contextual factors comprising a patient centered approach.
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| 2. |
- Janssen, Mathias, 1973, et al.
(författare)
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Life cycle assessment of lignin-based carbon fibres
- 2019
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Ingår i: 14th Conference on sustainable development of energy, water and environment systems.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Lignin-based carbon fibres may replace both glass fibres and fossil-based carbon fibres. The objective of this study was to determine the environmental impact of the production of lignin-based carbon fibres using life cycle assessment. The life cycle assessment was done from cradle to gate and followed an attributional approach. The climate impact per kg of lignin- based carbon fibres produced was 1.50 kg CO2,eq. In comparison to glass fibres, the climate impact was reduced by 32% and the climate impact of fossil-based carbon fibres was an order of magnitude higher. A prospective analysis, in which the background energy system was cleaner, showed that the environmental impact of lignin-based carbon fibres will decrease and outperform the glass fibres and fossil-based carbon fibres from a climate impact point-of-view. The constructed LCA model can be applied in further studies of products that consist of or use lignin-based carbon fibres.
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| 4. |
- Wirström, Eva, 1977, et al.
(författare)
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The 12C/13C ratio as a chemistry indicator
- 2011
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Ingår i: The Molecular Universe, Posters from the proceedings of the 280th Symposium of the International Astronomical Union held in Toledo, Spain, May 30-June 3, 2011, #384. ; 280:384
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Isotopic ratios of elements are considered powerful tools, e.g. in tracing the origin of solar system body materials, or the degree of nucleosynthesis processing throughout the Galaxy. In interstellar molecules, some isotopic ratios like H/D and 12C/13C can also be used as indicators of their chemical origin. Isotope fractionation in gas-phase chemical reactions and gas-dust interaction makes observations of the ratio between 12C and 13C isotopologues suitable to distinguish between different formation scenarios. We will present observations of the 12C/13C ratio in methanol (CH3OH) and formaldehyde (CH2O) towards a sample of embedded, massive young stellar objects. In relation to this we also present results from theoretical modeling showing the usefulness of the 12C/13C ratio as a chemistry indicator.
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| 7. |
- Wolf, Eva, et al.
(författare)
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Sexual Abuse Experiences and Dental Care Visits - Challenging!
- 2019
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Objectives: Victims of sexual abuse are more likely to experience dental fear as well as to suffer from an impaired oral health. Objective. To explicate and describe the persistent psychological and bodily memories of sexual abuse and how it is expressed during the visit to the dentist. Methods: Thirteen participants (11 women) who experienced sexual abuse as children or adults and in whom the abuse experiences were remembered and expressed during a dental appointment, were interviewed. The informants were encouraged to tell in their own words and in as much detail as possible about situations at the dental appointment when they were reminded of the sexual abuse experiences. To provide for as much empirical variation of the participants, some strategic selection criteria were applied; sex, age and class. The interviews were recorded digitally and transcribed verbatim. The collected material was analyzed according to Qualitative Content Analysis. Results: A pattern in the subjects’ experiences was identified and classified into the following theme and categories. The overall theme illustrating the latent content was An echo of sexual abuse transformed into (dys) functional reactions. The first main category covering the manifest content was The inner invisible struggle with two subcategories: (i) the abuse experience mental inscriptions and (ii) the consequences of the dental encounter. The second category was The discernible manifestations with two subcategories: (i) the enigmatic communication and (ii) the bodily expressions. Conclusions: During dental care the same reactions and negative emotions may arise as during abuse occasions. In the context of the abuse these are adequate defense responses, but in the dental clinic they are in a strict sense not adequate. The dental care situation contains both implicit and explicit expressions that are recognizable for dental staff. With knowledge of the pattern and expressions, dental care can provide better treatment and care.
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