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Endodontics

Amalgam

Introduction History Classification Generations Types Amalgamation Advantages &disadvantages Setting reactions Properties Manipulation Condensation & mulling Mercury toxicity Failures Bonded amalgam Amalgam waste management Recent advances Conclusion Blacks amalgam was mixture of 72.5% silver and 27.5% tin amalgamated with mercury.  This formula significantly improved dimensional stability of amalgam. In early 1900’s …

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All Ceramics

Leucite reinforced porcelainfeldspathic composition glass filled with crystalline leucite 50.6%wt increased strength, optec HSPdoes not re quire a core when used to fabricate all-ceramic restorations, as is necessary with aluminous PJC’STo reduce mismatch between co-efficient of thermal expansion, potassium ions in leucite have been exchanged for rubidium or cesium ions …

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AGE CHANGES IN ORAL TISSUES

Ageing is defined as a process of morphological and physiological disintegration as distinguished from infant, childhood and adolescence which are typified by processes of integration and co-ordination…Carranza. A disintegration of the balanced control and organisation that charecterises the young adult.   Most frequent oral motor disturbance in older persons is …

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Access opening

Definition: Endodontic coronal preparation which enables unobstructed acccess to canal orifices ,straight line access to apical foramen,complete control over  instrumentation and accomodating obturation technique.   [Picture]: access-cavity-preparation-12-638.jpg Bur  is placed  occlusal to cingulum perpendicular to palatal surface. Ledges are formed called triangle 1 and 2 of dentin. Triangle 2 removed …

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