Deficiencies in Silicone Impression for Crowns and Bridges

2017 ◽  
Vol 68 (10) ◽  
pp. 2317-2319
Author(s):  
Claudia Florina Andreescu ◽  
Oana Botoaca ◽  
Horia Mihail Barbu ◽  
Doina Lucia Ghergic ◽  
Anamaria Bechir ◽  
...  
Keyword(s):  
Dental Practice ◽  
Present Study Deal ◽  
Dental Crowns ◽  
Impression Materials ◽  
Dental Practitioners ◽  
Adequate Quality ◽  
Dental Impression ◽  
Single Crowns

There are many steps in fabrication of dental crowns and bridges at which an error can occur, and a technician can only fabricate a quality restoration if the impression itself is of adequate quality. All dental practitioners should have the ability to evaluate the quality of dental impression before sending to the laboratory. Elastomeric silicones (polysiloxane) are the most utilised impression materials in dental practice. The present study deal with the deficiencies of silicones dental impressions sent to commercial dental laboratories for fabrication of single crowns and bridges.

scholarly journals 3D Digital Impression Systems Compared with Traditional Techniques in Dentistry: A Recent Data Systematic Review

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1982 ◽  
Author(s):  
Marco Cicciù ◽  
Luca Fiorillo ◽  
Cesare D’Amico ◽  
Dario Gambino ◽  
Emanuele Mario Amantia ◽  
...  
Keyword(s):  
New Technologies ◽  
Digital Impression ◽  
New Device ◽  
Advantages And Disadvantages ◽  
Impression Technique ◽  
Impression Materials ◽  
Key Factor ◽  
Dental Impression ◽  
Digital Or

The advent of new technologies in the field of medicine and dentistry is giving improvements that lead the clinicians to have materials and procedures able to improve patients’ quality of life. In dentistry, the last digital techniques offer a fully digital computerized workflow that does not include the standard multiple traditional phases. The purpose of this study is to evaluate all clinical trials and clinical randomized trials related to the digital or dental impression technique in prosthetic dentistry trying to give the readers global information about advantages and disadvantages of each procedure. Data collection was conducted in the main scientific search engines, including articles from the last 10 years, in order to obtain results that do not concern obsolete impression techniques. Elsevier, Pubmed and Embase have been screened as sources for performing the research. The results data demonstrated how the working time appears to be improved with digital workflow, but without a significant result (P = 0.72596). The papers have been selected following the Population Intervention Comparison Outcome (PICO) question, which is related to the progress on dental impression materials and technique. The comparison between dentists or practitioners with respect to classic impression procedures, and students open to new device and digital techniques seem to be the key factor on the final impression technique choice. Surely, digital techniques will end up supplanting the analogical ones altogether, improving the quality of oral rehabilitations, the economics of dental practice and also the perception by our patients.

scholarly journals Accidental Aspiration of Dental Crowns and Retrieval

2012 ◽  
Vol 13 (5) ◽  
pp. 716-718 ◽  
Author(s):  
Sukhdeep Singh ◽  
Gurminder Singh ◽  
Ramandeep Singh Gambhir
Keyword(s):  
Preventive Measures ◽  
Rigid Bronchoscopy ◽  
Dental Practice ◽  
Case Description ◽  
Patient Reporting ◽  
Dental Procedure ◽  
Computed Tomographic ◽  
Dental Crowns ◽  
Dental Practitioners ◽  
The Right

ABSTRACT Aim The aim of this article is to create awareness among the dental practitioners regarding the various accidents which can happen during a dental procedure and stress upon the preventive measures that can be taken to reduce the same. Background This article presents a case of aspiration of dental crowns by the patient and its retrieval by coughing and preventive measures which can be taken to avoid such circumstances. Case description A patient reporting to private dental practice accidentally aspirated the two-unit prosthesis (crowns) in the right lung during cementation. He was immediately taken to the hospital, where chest radiographs and computed tomographic (CT) scan were done in order to locate the actual position of the prosthesis. Bronchoscopy was planned to retrieve the crowns but the patient had a bout of cough and the crowns came out. A chest radiograph was taken to confirm the absence of crowns. Clinical significance Taking adequate precautions while performing any dental procedure in supine position can decrease the occurrence of such incidents. Rigid bronchoscopy is the advised method of retrieval in case the crowns are not coughed out. How to cite this article Singh G, Gambhir RS, Singh S, Kaur H. Accidental Aspiration of Dental Crowns and Retrieval. J Contemp Dent Pract 2012;13(5):716-718.

scholarly journals Review of Dental Impression Materials

1988 ◽  
Vol 2 (1) ◽  
pp. 51-64 ◽  
Author(s):  
R.G. Craig
Keyword(s):  
Health Hazard ◽  
Dental Materials ◽  
Wetting Properties ◽  
The Past ◽  
Impression Materials ◽  
Present Information ◽  
Dental Impression ◽  
Near Future ◽  
Unpublished Information

Major advances in impression materials and their application have occurred during the last decade, with greater emphasis being placed on rubber impression materials than on dental compound, zinc oxide-eugenol, and agar and alginate. Of particular interest has been the effect of disinfection solutions on the qualities of impressions and the biocompatibility of impression materials. The principal advance in hydrocolloids has been the introduction of the agar/alginate impression technique, which has simplified the procedure and improved the quality of gypsum dies compared with those prepared in alginate impressions. The tear strength of some alginates has been improved, and some have been formulated so that the powder is dustless, thus reducing the health hazard as a result of patient inhalation of dust during the dispensing process. Polyether and silicone impression materials have been modified so that the working time, viscosity, and flexibility of the polyethers have been improved and, with the introduction of addition silicones, their accuracy has become exceptional. Although the early addition silicones liberated hydrogen after setting, thus delaying the pouring of models and dies, most addition silicones have been improved so that no hydrogen is released and dies can be poured immediately. The introduction of automatic mixing systems for addition silicones has simplified their manipulation, has reduced the number of voids in impressions, and has reduced the amount of material wasted. The incorporation of surfactants into addition silicones has made them hydrophilic, with wetting properties similar to those of polyethers, and has made pouring bubble-free gypsum dies easier. This review is confined to published and unpublished information of the past decade. It will also suggest trends that should be anticipated in the near future based on this information. The review will not present information developed before 1975, which is available in several textbooks on dental materials by Craig (1985a), Phillips (1982), and Williams and Cunningham (1979).

scholarly journals Attitudes and opinions of dental practitioners towards the use of clinical photography in Srinagar: a cross sectional study

2020 ◽  
Vol 8 (5) ◽  
pp. 1818
Author(s):  
Asif Yousuf ◽  
Iram Jan ◽  
Mohsin Sidiq
Keyword(s):  
Cross Sectional Study ◽  
Dental Practice ◽  
Sectional Study ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Clinical Photography ◽  
Dental Practitioners ◽  
Srinagar City ◽  
Dental Photography

Background: Clinical photography has become a part of modern-day dental practice. It has been used for dento-legal documentation, diagnosis, clinical assessment, treatment planning, patient motivation, communication with the patient and laboratory, academic purposes and also for marketing. The aim of the study was to assess and determine the knowledge and the extent of the use of photography by dental practitioners of Srinagar city.Methods: A cross-sectional survey involving a questionnaire consisting of 10 questions was distributed among 88 randomly selected dental practitioners of Srinagar city, out of which 72 dental practitioners responded positively and returned the questionnaire. The data collected were computerized and analyzed statistically. The average values of the responses received by groups of questions were analyzed.Results: According to the survey conducted, 52(72.22%) dentists used photography for dental practice. Out of all the dentists surveyed, 63(87.5%) of the dentists knew about the importance of dental photography. It was observed that 40(55.55%) fresher dentists (<5 years’ experience) showed more positive attitude towards the application of photography in their dental practice. It was also revealed that the application of clinical photography among male dentists, dentists with <5 years’ experience and dentists who work with an assistant were significantly higher as compared to other dentists (p<0.05).Conclusions: Hence, from this study, majority of respondents (87.5%) were aware of the importance of dental photography. The reasons which prevented the dentist from using clinical photography were lack of time, expensive instruments, lack of interest and cross infection. Male practitioners were more likely than female practitioners to use clinical photography. Photographic training should hence be inculcated in the curriculum of dentistry. Also dental practitioners should actively participate in CDE programs on Clinical photography to improve the quality of dental practice.

Effect of UV disinfection on dimensional stability and infection control of elastomeric impression materials

2015 ◽  
Vol 7 (2) ◽  
pp. 60-63
Author(s):  
Neha Hajira ◽  
Ashwini Wadhwani ◽  
G. Vinaya Kumar
Keyword(s):  
Infection Control ◽  
Dimensional Stability ◽  
Scientific Paper ◽  
Uv Disinfection ◽  
Dental Practice ◽  
Ultraviolet Disinfection ◽  
Disinfection Methods ◽  
Impression Materials ◽  
Materials Used

Abstract In many areas of dental practice which involves exposure to blood and other body fluids, there is growing concern regarding improvements in cross-infection control. There is a need for disinfection methods to be effective while also being cheap, rapid, non-toxic, broad spectrum and easy to practice. Impression materials used in prosthodontics cannot be heat sterilized and are often damaged by chemical disinfection. In recent advances, ultraviolet disinfection method has begun to prove its effectiveness to control contamination of impression materials by killing microbes while preserving the quality of material. This scientific paper to be presented is on a study conducted to evaluate the effect of ultraviolet disinfection on the dimensional stability and infection control of elastomeric impression materials. How to cite this article Vinaya Kumar G, Wadhwani A, Hajira N. Effect of UV disinfection on dimensional stability and infection control of elastomeric impression materials. CODS J Dent 2015;7:60-63.

Cancer pain management

2014 ◽  
Vol 155 (3) ◽  
pp. 93-99
Author(s):  
Péter Heigl
Keyword(s):  
Quality Of Life ◽  
Pain Management ◽  
Pain Relief ◽  
Life Expectancy ◽  
Cancer Pain ◽  
Cancer Pain Management ◽  
Medical Activity ◽  
Short Summary ◽  
Adequate Quality

Pain is a significant and alarming symptom of cancer seriously affecting the activity and quality of life of patients. Recent research proved that inadequate analgesia shortens life expectancy. Therefore, pain relief is not only a possibility but a professional, ethical and moral commitment to relieve patients from suffering, as well as ensure their adequate quality of life and human dignity. Proper pain relief can be achieved with medical therapy in most of the cases and the pharmacological alternatives are available in Hungary. Yet medical activity regarding pain relief is far from the desired. This paper gives a short summary of the guidelines on medical pain management focusing particularly on the use of opioids. Orv. Hetil., 2014, 155(3), 93–99.

The use of vinyl polysiloxanes and quick setting epoxies in paleontology

1989 ◽  
Vol 63 (2) ◽  
pp. 256-256 ◽  
Author(s):  
Patrick Leiggi
Keyword(s):  
Fast Method ◽  
Impression Material ◽  
Impression Materials ◽  
Dental Impression

Quick setting dental impression materials are nothing new in the paleontology laboratory. In a paleontological note published in the Journal of Paleontology on “The Use of Dental Impression Material For Molding Macrofossils” (Quilty & Williams, 1975), the products Xantopren and Optosil were introduced as a simple and fast method of obtaining precision molds in 1-3 minutes. Since the mid-1970's these products have been replaced by vinyl polysiloxanes.

Self-preference music for gagging patient: Effect on physiology and oral health-related quality of life during dental impression

2021 ◽  
Vol 43 ◽  
pp. 101392
Author(s):  
Nor Wati Nur Atikah Mustafa ◽  
Nur Humaira Ishak ◽  
Nur Athirah Mohd Rosli ◽  
Nik Rahayyu Nik Zulkifeli ◽  
Aiemeeza Rajali
Keyword(s):  
Quality Of Life ◽  
Oral Health ◽  
Health Related Quality ◽  
Related Quality ◽  
Health Related ◽  
Dental Impression

scholarly journals Textile Recognition and Sorting for Recycling at an Automated Line Using Near Infrared Spectroscopy

Recycling ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 11
Author(s):  
Kirsti Cura ◽  
Niko Rintala ◽  
Taina Kamppuri ◽  
Eetta Saarimäki ◽  
Pirjo Heikkilä
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Nir Spectroscopy ◽  
Automated Recognition ◽  
Textile Materials ◽  
Input Material ◽  
Adequate Quality ◽  
Automated Line

In order to add value to recycled textile material and to guarantee that the input material for recycling processes is of adequate quality, it is essential to be able to accurately recognise and sort items according to their material content. Therefore, there is a need for an economically viable and effective way to recognise and sort textile materials. Automated recognition and sorting lines provide a method for ensuring better quality of the fractions being recycled and thus enhance the availability of such fractions for recycling. The aim of this study was to deepen the understanding of NIR spectroscopy technology in the recognition of textile materials by studying the effects of structural fabric properties on the recognition. The identified properties of fabrics that led non-matching recognition were coating and finishing that lead different recognition of the material depending on the side facing the NIR analyser. In addition, very thin fabrics allowed NIRS to penetrate through the fabric and resulted in the non-matching recognition. Additionally, ageing was found to cause such chemical changes, especially in the spectra of cotton, that hampered the recognition.

scholarly journals Improving Indoor Air Quality by Using Sheep Wool Thermal Insulation

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2443
Author(s):  
Andreea Hegyi ◽  
Cezar Bulacu ◽  
Henriette Szilagyi ◽  
Adrian-Victor Lăzărescu ◽  
Vasile Meiţă ◽  
...  
Keyword(s):  
Air Quality ◽  
Thermal Insulation ◽  
Indoor Air ◽  
Living Space ◽  
Coefficient Of Thermal Conductivity ◽  
Adequate Quality ◽  
Risk Of Disease ◽  
Efficiency Indicators ◽  
Sheep Wool

Currently, the need to ensure adequate quality of air inside the living space but also the thermal efficiency of buildings is pressing. This paper presents the capacity of sheep wool heat-insulating mattresses to simultaneously provide these needs, cumulatively analyzing efficiency indicators for thermal insulation and indicators of improving air quality. Thus, the values obtained for the coefficient of thermal conductivity, and its resistance to heat transfer, demonstrate the suitability of their use for thermal insulation. The results of the permeability to water vapor characteristics on the sorption/desorption of water, air, demonstrate the ability to control the humidity of the indoor air and the results on the reduction of the concentration of formaldehyde, demonstrating their contribution to the growth of the quality of the air, and to reduce the risk of disease in the population.

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