RETENTION FORM: Retention form is that form of cavity that best permits the restoration to resist displacement through tipping or lifting forces, especially masticatory loading. PRINCIPAL MEANS OF GAINING RETENTION: Inverted truncated cones or undercuts. Dovetail. Elastic deformation of dentin e.g. gold foil. Friction – which depends on surface area, opposing walls or surfaces involved, [...]
Outline Form in cavity preparation
June 29, 2009 By 2 Comments
OUTLINE FORM: G .V. Black has described the outline form as being “the form of the area of the tooth surface to be included within the outline or enamel margins of the finished cavity”. It is the placement of cavity margins in the positions they will occupy in the final preparation, except for finishing enamel [...]
Cavity Preparation in Dentistry
June 29, 2009 By
Definition: The orderly operating procedure required to remove diseased tissue and establish in a tooth the biomechanically acceptable form necessary to receive and retain a restoration. (Boucher’s Clinical Dental Terminology): An operation in which carious material is removed from teeth and biomechanically correct forms are established in the teeth to receive and retain restorations. A constant [...]
FDI & Wrigley Photographic Award 2009
June 23, 2009 By Leave a Comment
The FDI and Wrigley have come together for a noble cause where Wrigley have come forward to donate $25 to $25,000 for the FDI’s World Dental Development Fund (WDDF), which supports oral health education and projects worldwide. The Wrigleys WHOP – Wrigleys Oral health Program wants your help to do it, in which you can also [...]
Leukaemia
June 23, 2009 By 1 Comment
Leukaemia also known as Blood Cancer is charecterized by abnormal increase in the number of Leucocytes which are also known as the White blood cells, due to the increased proliferaton of these cells. Classification of Leukaemia: Acute Chronic The Acute and Chronic are further Classified as Acute: Lymphoid (Lymphoblastic) Myeloid (Myelogenous) Chronic: Lymphoid (Lymphocytic) Myeloid [...]
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