... what is the recommended condensing increments? The amalgam waste material settles at the bottom of the container and The poor condensation practice reduced the strength of product D only 2 per cent, but product B was reduced 14 per cent as a result of the variation in manipulation. FACTORS AFFECTING STRENGTH Condensation: • For lathe cut amalgam, greater the condensation pressure higher the compressive strength. 6) Use of suitable sized condensers (slightly smaller than cavity width). A force applied to the hand condenser Finish the cavosurface margins. [] Mercury. [] Later, Li Shihchen (1578) chronicled a dental mixture of 100 parts mercury with 45 parts silver and 900 parts tin. 2) Eliminating voids and reducing the amount of ... layers is impossible. List the following in order from start to finish for an Amalgam restoration. 100% amalgam waste capacity of the container is approx. CONDENSATION : CONDENSATION Compacts alloy so that greatest possible density attained Hg rich amalgam brought on top of each increment Delayed condensation weaker amalgam Good isolation in zinc containing alloy Ultrasonic condensers not recommended … A. A. Normally, fracture in the amalgam occurs at the grain boundaries. The amalgam container is always full of waste luid and a varying level of amalgam waste material. All moulds were overfilled, and excess amalgam was cut off with a knife. Condensation pressure When a given force is applied,smaller the condenser greater the pressure exerted on the amalgam. 2.7.4 Condense the amalgam with greatest confortable force. 2. compressive strength of amalgam. Which of the following statements apply to condensation of amalgam? Removal of Hg rich amalgam during condensation of each ... CONDENSATION PRESSURE Condensation force- 13.3-17.8N(3 to 4lb). What is the recommended for condensation of dental amalgam ? Less condensing force is required B. Less than 0.02 % B. Later condensation (facially and lingually directed condentsation) is very important in the promixal box portions of the preparation to ensure confluence of the amalgam margins. No radiographic change C. Symptoms are similar to acute alveolar abscess [] In Europe, Johannes stokers, a municipal physician in Ulm, Germany, recommended amalgam as a filling material in 1528. 0.5 mm. During the condensation of the conventional amalgam mercury-rich material was removed before another increment was added. It has been shown that amalgam condensation under or close to in vivo conditions revealed condensation pressures significantly below those mentioned above (1, … Carving The amalgam is overfilled into the cavity and the mercury rich surface layer is trimmed away. Dental amalgam has been used for over 150 years to fill the voids caused by tooth decay in millions of people. Porosity: If time lapse between trituration and condensation is more, porosities are more and strength is less. i. Rinse and dry prep. 3 pounds C. 35 pounds D. 25 lb. [] Condensation is usually started at entire or spherical alloy and 45 o to walls and floors for non spherical amalgam. Radiographic examination shows generalized loss of the lamina dura and a “ground glass” appearance of the bone. 10. Less than 0.1 % C. Less than 0.01 % D. None of the above # In spherical alloys as compared to lathe cut: A. Recommended optimum condensation pressures were mainly derived from laboratory investigations and are between 10-20 MPa (=1-2 kp/mm^) (79). - A freshly triturated spherical amalgam has a “mushy” feel, and a small condenser may push through the material, as a pool cue pushes through a box of ping-pong balls. 5. a. The packing force, as determined by doing the packing on a balance, was such as to give a condensation pressure of approximately 65 kg/cm2. Decreased force of condensation C. Under or overtrituration D. Delay in time between trituration and condensation # Which of the following is untrue regarding exacerbation of Phoneix Abscess? It suggests that the number of amalgam restorations should be limited to reduce the total daily average exposure of an individual to mercury from all sources (including food, water, air and dental amalgam). Gingivectomy is recommended The most practical method to significantly reduce the setting time of stone and plaster is to use A 65 year old patient has a tendency for urinary tract stones. Preserving unsupported enamel may facilitate matrix placement and improve amalgam condensation (Fig. Dental Amalgam Col Kraig S. Vandewalle USAF Dental Evaluation & Consultation Service. amalgam substitutes for stress–bearing restorations in the permanent teeth cannot be recommended without caution. Forces of 66.7 N (15 Lb) are recommended for condensation but it is doubtful that forces of this magnitude are used. by clinic staf, it is highly recommended to employ your equipment service technician. Which of the following elements is a liquid at room temperature? Mechanical Condensation: Mechanical condensers provide vibration or impact type of force to pack the amalgam mix. ii. 40. Su Kung (659 AD) mentioned the use of a mixture in the Material Medica. A condenser is selected on the basis of its ability to remove excess mercury and to apply pressure needed for adaptation. Amalgam Management. As a general rule, smaller amalgam condenser are used first. Less effort is needed than for hand condensation. Amalgam controversy and amalgam war. 6-7, B). Traditional condensation techniques are recommended. Although the tested amalgam … triturated amalgam will form into a bright homogeneous plastic mass. A. 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( slightly smaller than cavity width ) amalgam as a filling material in 1528 high condensation forces required... Zinc present is: a where high condensation forces are required a corrosion-resistant dental alloy is which! Group I received a Varnish application and the condensation pressure higher the compressive strength present is:....

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