PPT-Tooth Preparation for silver amalgam restorations

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. This acid could be dietary gastric or environmental It is therefore distinct from th ose types of tooth wear that are caused by friction or mechanical wear but in many ca ses the clinical presentation of tooth wear results from a combination of acid 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 :. Dental laboratory technology. is the art and science of designing, manufacturing and customizing corrective devises and replacement for natural teeth and associated tissues.. A Dental Technologist. 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. What . is dental amalgam? Should you use it in your dental practice?. Introduction. Dental . amalgam has been in use for more than 175 years and has been used for hundreds of millions of restorations. principles cavity preparation. Dr. . AbdulAziz. . N. . Maher. Definition of tooth preparation. Mechanical alteration . of . defective. ,. injured. , or . diseased. tooth to best . receive. restorative material . etiology and diagnosis. Alaa. Sabrah . BDS, MSD, PhD. Discoloration: the . process of changing to a different, less attractive color.. located on the surface of the . tooth. most . easily removed by external cleaning.. Annemai Haak. STOM V. Suu- ja hambahaigused III. Indications:. Filtek Z250 Universal. Microhybrid. Z. irconia/silica. fillers. F. iller. . loading is 60%. Most used dental material in Estonia over 10 years. MSc.operative. dentistry. Terminology. Silver paste. an alloy, one of the constituent of . which is mercury. an alloy made by mixing Hg with . Ag . dental amalgam alloy. components. 1. Silver ( Ag) 48- 70%. Assistant Professor,. Conservative Dentistry & Endodontics. Overview. History. Basic composition. Basic setting reactions. Classifications . Manufacturing. Variables in amalgam . performance. History . . kumar. ,. Dept of Conservative . Dentistry&Endodontics. 8- 11- 2014. The clinical form of cavity preparation. The principles of modern cavity preparation were first defined in 1896 by Dr. G.V. Black, a man considered by many to be the "father of modern restorative dentistry". When his original sequence of cavity preparation was described, "extension for prevention" of recurrent decay was one of the most important considerations of cavity design. . The retentive Macro-Lock Post Size #1 was able to accommodate the vacant space, leaving relatively low cement thickness.. . This post system was selected because of the anatomic taper in the apical sections, and the reported flexural strength of this post. .