SOME ASPECTS OF RETRACTION THE GINGIVAL SULCUS

2021 ◽  
Vol Special issue (3) ◽  
pp. 39-44
Author(s):  
Murod Toshpulatovich Safarov ◽  
◽  
Jaloladdin Xalimetov ◽  
Sardor Tolmasov
Keyword(s):  
Double Layer ◽  
Daily Basis ◽  
Google Scholar ◽  
Gingival Tissue ◽  
High Quality ◽  
Gingival Margin ◽  
Hard Tissues ◽  
Negative Effect ◽  
Abutment Teeth ◽  
General Dentists

In order to achieve an optimal fit between the crown and the margin formed below the gingival margin, a good mapping of the space behind the margin is required. This can be accomplished in a variety of ways. At various stages, general dentists and prosthodontists apply gum retraction across the board on a daily basis. Gum retraction was first described in 1941 by Thompson. Today, a large assortment of retraction cords is presented on the material market. One of the main requirements forhigh-precision impressions is a clear display of the gingival sulcus around the abutment teeth. To obtain high-quality impressions, it is necessary to ensure the unimpeded position of the impression material in this area, which is ensured by retraction. With the generalized form of increased abrasion of the hard tissues of the teeth, all teeth or most of them are subject to restoration of the anatomical shape, therefore it is important to choose a retraction method that would not only allow obtaining ahigh-quality impression, but also minimize its negative effect. Since 1975, PubMed and Google Scholar have searched for studies on gingival tissue management prior to impression creation on fixed dentures. The conclusions were extracted and summarized by us. Gingival retraction methods are divided intomechanical, chemical or surgical types. This article discusses the various methods of gingival retraction for subsequent double-layer impressions.

scholarly journals Effect of gingival retraction cord and retraction paste on gingival tissue in fixed prosthodontics impression

2014 ◽  
Vol 3 (2) ◽  
pp. 20-27
Author(s):  
Mohammad Shamsuzzaman ◽  
Sheikh Md Shahriar Quader ◽  
Shakila Fatema ◽  
Md Abdul Gofur ◽  
Khaleda Akter
Keyword(s):  
The Other ◽  
Gingival Tissue ◽  
Hemorrhage Control ◽  
Fixed Prosthodontics ◽  
Abutment Teeth ◽  
The Mean ◽  
Mean Time ◽  
Reduced Time

Background & Objectives: Of the various gingival retraction systems available in the market, a cordless paste system is fairly new entrant into this field. This system promises to provide an easier method to obtain optimum retraction with excellent hemorrhage control. The present study was designed to clinically evaluate the efficacy of paste retraction system and medicated retraction cords on the basis of relative easy of working, hemorrhage control and amount of vertical gingival retraction. Methods: 40 subjects were selected requiring full veneer restoration where more than one abutment teeth were to be prepared. After the preparation of the abutment teeth flexible scales were used to measure the sulcus depth before retraction and after retraction. Medicated retraction cord technique was used on one abutment tooth and on the other abutment tooth paste retraction system was employed. Subjectively easy of placement and hemorrhage scores was assessed. Results: The mean time taken for paste retraction technique was 45.13 seconds and for medicated retraction cord technique was 105.4 seconds. In all the subjects paste retraction technique was relatively easier as compared with medicated retraction cord technique. Mean hemorrhage scores using paste retraction technique was 0.05 and using medicated retraction cord technique it was 1.70. Mean vertical gingival retraction using paste retraction technique was .36mm and using medicated retraction cord technique was 0.54mm Conclusion: Within the limitations of this study, paste retraction system requires reduced time for application, is easier to place, and provides excellent hemorrhage control in comparison to medicated retraction cord. However, medicated retraction cord provides increased amount of vertical retraction as compared to paste retraction technique. DOI: http://dx.doi.org/10.3329/updcj.v3i2.17995 Update Dent. Coll. j: 2013; 3 (2): 20-27

scholarly journals Extraction of high quality RNA from hard tissues of adult coconut palms

2018 ◽  
Vol 17 (9) ◽  
pp. 263-268
Author(s):  
Souza-Perera Ramon ◽  
Torres-Hernandez Nelson ◽  
Juan Zuniga-Aguilar Jose
Keyword(s):  
High Quality ◽  
Hard Tissues

Adjusting to the unexpected

2015 ◽  
Vol 21 (4) ◽  
pp. 421-438
Author(s):  
Ajay K. Jain ◽  
Sherry Sullivan
Keyword(s):  
Literature Review ◽  
Citation Analysis ◽  
Thematic Analysis ◽  
Design Methodology ◽  
Google Scholar ◽  
High Quality ◽  
Content Type ◽  
Management History

Purpose – This study aims to provide a literature review of the 56 articles published in the Journal of Management History (JMH) from 2000 to 2004. Design/methodology/approach – The authors conducted a thematic analysis using the categories of person, topic or event to classify articles as well as a citation analysis using Google Scholar. Findings – The number of articles published from 2000 to 2004 was almost 50 per cent fewer than published in the previous five years, and citation rates were lower. Originality/value – Results suggest that high-quality articles focused on persons or topics are more likely to be published in the JMH.

CRA University – School of Clinical Trial Monitors: 10 years of success

2021 ◽  
pp. 4-8
Author(s):  
V. L. Semenov-Tyan-Shanskiy ◽  
◽  
A.S. Bal’tserovich ◽  
A.N. Sazonova ◽  
O.A. Loginovskaya ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Educational Program ◽  
Daily Basis ◽  
Electronic Systems ◽  
High Quality ◽  
Professional Career ◽  
Personal Attitude ◽  
Online Format

This article presents the history and structure of the school of clinical trials monitors in Russia, the reasons for its opening in 2011, as well as the results of a survey of graduates. The authors discuss in detail what tasks they faced in creating a high-quality, modern, interactive educational program that is sustainable in the long term. Shows the important role of collaboration between academic institutions and business companies directly involved in clinical research on a daily basis. The structure of the course is presented, as well as teaching materials and electronic systems and technologies are used. Separately, the experience of operating a school during the COVID-19 pandemic is given, an analysis of the course functioning in fully online format, the positive and negative aspects of this approach. The second part of the article presents the results of a survey of graduates of the course for 9 years: from their satisfaction with training, to their further professional career (a total of 8 questions). In conclusion, the authors present their personal attitude to this educational project.

Electric Double Layer Action of High-quality Ionic Liquid Crystal Thin Films

2021 ◽  
Author(s):  
Haruka Komatsu ◽  
Miyuki Tanaka ◽  
Kenichi Kaminaga ◽  
Shingo Maruyama ◽  
Yuji Matsumoto
Keyword(s):  
Thin Films ◽  
Ionic Liquid ◽  
Liquid Crystal ◽  
Double Layer ◽  
Electric Double Layer ◽  
High Quality

High quality ion acceleration from a double-layer target dominated by the radiation pressure of a transversely Gaussian laser pulse

2010 ◽  
Vol 17 (10) ◽  
pp. 103107 ◽  
Author(s):  
Xue-Ren Hong ◽  
Bai-Song Xie ◽  
Shan Zhang ◽  
Hai-Cheng Wu ◽  
Aimierding Aimidula ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Double Layer ◽  
Radiation Pressure ◽  
Ion Acceleration ◽  
High Quality

High-Quality Hybrid Double-layer-Silicon on Silicon Nitride Platform for Integrated Photonic Applications

2018 ◽  
Author(s):  
Tianren Fan ◽  
Hesam Moradinejad ◽  
Amir H. Hosseinnia ◽  
Xi Wu ◽  
Ali A. Eftekhar ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Double Layer ◽  
High Quality

scholarly journals Impact of Spatial Misallocation of Electric Power Resources on Economic Efficiency and Carbon Emissions in China

2021 ◽  
Author(s):  
Delu Wang ◽  
Suqing Zhang ◽  
Yadong Wang ◽  
Jinqi Mao
Keyword(s):  
Electric Power ◽  
Economic Efficiency ◽  
Carbon Emissions ◽  
Calculation Model ◽  
Economic Transformation ◽  
High Quality ◽  
Regional Economic ◽  
Power Resources ◽  
Negative Effect ◽  
The Impact

Abstract The relationship between resource misallocation and productivity has become a hot topic in recent years, but few studies examined the impact of spatial misallocation of electric power resources (SMEPRs) on economic efficiency and carbon emissions. Here, we constructed a calculation model of SMEPRs that can measure both the misallocation degree and direction and uncovered the spatiotemporal evolvement mechanism of SMEPRs. On this basis, we explored the impact of SMEPRs on regional economic efficiency and carbon emissions using panel data from 29 provinces in China from 1988-2017. The results demonstrate that the high level of SMEPRs in China shows complex spatiotemporal characteristics and significantly affects the regional economic efficiency and carbon emissions. Specifically speaking: first, SMEPRs presents the characteristics of the coexistence of excessive and insufficient allocation among provinces and regions, the increasing extent of misallocation in the eastern and western regions, and the gradual decline in the central region; second, SMEPRs has a strong negative effect on the regional economic efficiency and carbon emissions by affecting regional industrial structures, which indicates that SMEPRs is an important factor restricting the high-quality development of regional economies. The research observations offer fresh insights to upgrading the high-quality and green development of China's power sector and promoting regional economic transformation and ecological sustainability.

scholarly journals Response of Winter-injured Peach Trees to Pruning

2000 ◽  
Vol 10 (4) ◽  
pp. 757-765
Author(s):  
Stephen S. Miller ◽  
Ross E. Byers
Keyword(s):  
Prunus Persica ◽  
Economic Advantage ◽  
Canopy Height ◽  
Freezing Injury ◽  
High Quality ◽  
Canopy Volume ◽  
Negative Effect ◽  
Peach Trees ◽  
Over Time

Seven-year-old `Blake'/`Lovell' peach [Prunus persica (L.) Batsch] trees were subjected to four pruning levels (none, light, heavy, and dehorned) each at three times (April, May, and June) in a factorial arrangement following freezing injury in January 1994. Pruning had a significant effect on canopy height, canopy volume and fruit yields. Peach trees pruned in April or dehorned (severe pruning) had less canopy volume in the first fruiting season (1995) after the pruning treatments were initiated than trees pruned in May or June and light or heavy pruned trees. In 1995, yields were lower for trees pruned in June, nonpruned or dehorned trees in 1994. These treatments also produced fewer large fruit at harvest and thus reduced dollar returns per hectare in 1995. In 1996, fruit numbers and fruit sizes did not differ among treatments, but dehorned trees had lower returns per hectare because trees were smaller. The results of this study indicate that peach trees subjected to moderate winter injury should be pruned no later than 2 to 3 weeks after bloom using a heavy level of pruning. There appears to be no economic advantage to dehorn pruning even though canopy volume can be reduced resulting in a smallertree with high quality wood. The results clearly illustrate the long-term negative effect of dehorn pruning on yields resulting from reduced canopy volume. Mean number of cankers per tree increased over time from 1995 through 1998, but pruning treatments did not affect the number of cankers produced. Pruning treatments did affect the size of cankers and the number with visible gumming.

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