PPT-Complex Amalgam Restorations

Syed Mukhtar Un Nisar Andrabi Introduction Complex posterior restorations are used to replace missing tooth structure of teeth that have fractured or are severely involved with caries or existing restorative material. It was just one type of metallic restoration others included hammered gold leaf or lead the latter placed while molten Right from the start the use of amalgam was controversial Mercury was known to be toxic and the technique of inserting amalgam see A Class II preparation. No. 245 Bur . Pear shaped bur No. 330. INITIAL DEPTH. Initial depth is 1.5 mm from the central pit or 0.2-0.5 mm into dentin or 2mm from the prepared . buccal. and lingual walls.. Dr . Rakesh. Kumar . Yadav. INTRODUCTION. Most of the teeth can be restored with amalgam and composite but if large crown portion lost due to caries or some other reasons, the remaining tooth structure is decrease and difficult to obtained resistance and retention form so prepare dentine lock and slot but when these retention features are insufficient to provide desired retention then pin supported restorations are used. . Signature or Patient or Guardian if a Minor Date Class I Amalgam Restoration. Conservative Approach. Cavity width : . ¼ intercuspal distance (1 – 1.5 mm).. Depth : . 1.5 – 2 mm. Indications. Moderate to large restorations.. Restorations that are not in . Resin . Cements. . Dr. Rui . Franco. 27 July 2015. Introduction. Objectives. Resin Cements – State of the Art;. Cementing Technique in Indirect Composite Restoration:. Polymerization type; . Adhesive System.. why. it is . banned. in . Norway. Dental amalgam. Anette. . &. Jenny. Scandinavia. ban . the. . use. . of. amalgam. In 1998 proposed a law that would gradually discontinue the use of mercury. 1. Shade selection in complex . esthetic. restorations with composite.  . Mireille . Feghali. . Fares. Département de Dentisterie Restauratrice et Esthétique Université Libanaise . mireillefeghali@hotmail.com. How should dental items be used?. Should be organized and placed in proper sequence. After use, is returned to same place on tray in case it is used again. Main Parts of Dental Hand Instruments. Blade: . While Columbus thought that he found a new world, . aborigines. had lived in North American for centuries. . Syn. : native, indigene . altercation: . noun. A noisy dispute. After the . altercation. at the Wagon Wheel Saloon, the cowboys were banned from singing karaoke. . Dr. . . KaramAhmed. Operative Dentistry. Conservative Dentistry. It’s the art and science of . diagnosis,. . treatment. and . prognosis. of defects of teeth. Such treatment should result in:. Goals. Assistant Professor,. Conservative Dentistry & Endodontics. Overview. History. Basic composition. Basic setting reactions. Classifications . Manufacturing. Variables in amalgam . performance. History . Powder: the alloy powder composed of :. 1- sliver . : 40-70% . Gives strength . High expansion of the restoration. 2- Tin . 20-30%. Increase affinity for mercury. speed of amalgamation. Increase the flow of the amalgam . 1. 2. 3. 4. INITIAL DEPTH. 5. OUTLINE FORM FOR MANDIBULAR FIRST MOLAR. 6. Outline Form. Establishing outline form means:. 1) Placing preparation margins in positions they will occupy in the final preparation except for finishing enamel walls and margins..