Retention Of Cad/Cam Crowns Luted With Resin Cements And Rmgi

Objectives: To measure retention of lithium disilicate (IPS e.max CAD, Ivoclar Viva-dent) and zirconia reinforced lithium disilicate (CELTRATM DUO, Dentsply) copings luted using resin cements and resin-modified glass ionomer cement. Methods: 110 Extracted human, non-carious mandibular 2nd premolars (n=10) were embedded in PVC cylinders with acrylic resin and placed into a lathe to produce a uni-form crown preparation (22°-convergence & 3mm-height). Following the orientation groove placement (69L bur), preparations were scanned and milled using a CEREC 3D/Sirona machine to produce e.max and CELTRATM DUO crowns. Preparations were imaged with a digital microscope (Keyence/VHX-600-20X) and the surface area of each crown was calculated. IPS e.max crowns and CELTRATM DUO crowns were cemented using the cements as in Tables 1 & 2. Specimens were stored (distilled water/37°C/24h) and thermocycled (10,000cycles/5-50°C/30secs) before debonding in tension at crosshead speed-5mm/min (INSTRON Model/5565). The bond strength was calculated by dividing the failure load with preparation surface area. The CELTRATM DUO and e.max data were compared separately with 1-way ANOVA and Tukey post-hoc analysis (alpha=0.05). Results: The simulated crown strength test results for e.max were: Calibra=4.89±2.35a; ExpE(TE)=3.70±2.08a,b; ExpSE=3.18±2.03a,b RelyXLP=3.11±1.99a,b; ExpE(Self-Etch)=2.74±1.23a,b; Multilink=2.66±1.72a,b; RelyXU=2.65±1.46a,b; Re-lyXLP/HF=1.91±0.70b. For CELTRATM: Exp/S=4.73±2.45a; Exp/S/E=4.40±1.76a,b; Re-lyXLP/HF=3.34±1.65a,b,c; Exp=1.79±0.70b,c; and RelyXLP=0.95±0.58c. The ANOVA showed some significant differences between groups (p=0.01) where the same letter denotes similar groups. Conclusions: The Calibra material resulted in significantly higher retention with the than RelyXLP/HF for the coping fabricated from emax. The experimental resin cement with silane when compared to Exp and RelyXLP resulted in significantly higher test retention strength for the CELTRATM DUO

Synthesis of fluorescent long-chain thiols/disulfides as building-blocks for self-assembled monolayers preparation

Abstract New symmetrical disulfides together with the corresponding thiols bearing fluorescent end-groups have been synthesized as building-blocks for self-assembled monolayers (SAMs). The synthesis has been accomplished starting from aromatic nitrogen heterocycles in three steps. The conversion of the tosylated intermediate into the final disulfide is accomplished by use of sodium hydrogen sulfide (NaSH). Both products (thiols and disulfides) were isolated and characterized

Anti termite activity of Jatropha curcas Linn. biochemicals

Jatropha curcas oil and its toxic fraction were evaluated at different dilutions i.e., 1%,5%,10%,20% against Microcerotermes beesoni, the test termite. The maximum wood protection against termites of both the treatments were obtained at their highest concentration i.e. 20%. The weight loss ranged from 18.77% to 48.80% at concentrations of 20% to 1% of Jatropha curcas oil formulation. The protection afforded by toxic fraction was enhanced, with the % weight loss ranging from 10.48 to 35.19. However, all the treatments proved to be effective over the control (50.84%

Three known species of the genus Parahadronchus – First report from Mizoram, India

Mononchs play a vital role in reducing phytophagous nematode population. The present study deals with the diversity of Parahadronchus in Mizoram. Various soil samples were collected from different parts of Mizoram along with the GPS location. Upon processing and examination, three known species of the genera Parahadronchus were found, viz., Parahadronchus siroii, Parahadronchus marami and Parahadronchus shakili. P. siroii is distinguishable from P. shakili in its smaller body, short oesophagus, lesser number of vulval papillae, small lip, etc. P. marami has narrower buccal cavity, thinner body with three subventral denticles. P. shakili has larger body, broader buccal cavity with 3-6 subventral teeth. &nbsp

Advertising Effectiveness In Events

Confronted with decreasing effectiveness of the classic marketing communications, events have become an increasingly popular alternative for marketers. Events constitute one of the most exciting and fastest growing forms of leisure and business. With time, the decreasing effectiveness of classical marketing communications boosted the use of events for marketing and making brand awareness. Event marketing is seen as the unique opportunity to integrate the firm’s communication activities like public relations, advertising, and direct marketing, in a sense which enables consumers to interact with brands. The basic objective of any industry is to deliver the product in market with making profits and merchandising. This can be done with the help increase in sales at remunerative prices. Advertising is the major player for reach of products and services to the consumers and a varied method of publicity. American Marketing Association (2006) defines advertising as “any paid form of non personal presentation and promotion of ideas, goods and/or services by identified sponsor” (Kotler and Keller, 2009). This particular researcher paper focuses on the advertising effectiveness in (sports) events, London Olympic Games 2012. The focus of particular research is to gather knowledge from attendee’s about the sponsors advertisements and products. Research work entails on understanding the effectiveness of advertisements by sponsors for promoting and maintaining brand image in public. Study conducts 40 semi-structured interviews to understand the aspects of advertising effectiveness, and also explore the emotional and cognitive effects that advertisements generate. Henceforth, the research is conducted on London Olympics a mega sports event to understand the advertising effectiveness. Event marketing (advertisements) thus links a company’s brand to an activity for the purpose for creating experiences for attendees and promoting brand or product/service. The focus relies on what advertising effect the consumers have and how information is conveyed to consumers