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News Bulletin : ADA News Bulletin July 2011
39 July 2011 aesthetic update Compiled by Geoffrey M Knight Minimal intervention inDiReCt BRiDge Disintegrating mouths of ageing ‘baby boomers’ present ongoing challenges to the dental profession. As failing teeth require extraction and the surrounding dentition is often compromised by restorations with an uncertain prognosis. Every clinical situation presents with a unique set of circumstances. However, there are often situations where a careful analysis of the dentition provides an opportunity to create sufficient retention for an indirect bridge with minimal further preparation of the teeth. CASE STUdY The following case shows a patient who was referred for implants to replace two upper bicuspids but was not prepared to undergo the necessary sinus lift required for their placement. Examination of her surrounding dentition showed a large proximal amalgam restoration extending over the mesial and distal of the first molar and composite restorations on the mesial and distal surfaces of the canine. Fig 2. Canine abutment has good retention form and resistance to lateral and rotational forces. Fig 1. After removal of existing restorations extent of further cavity preparations are outlined in yellow. Fig 3. Preparation extensions onto mesial, distal and lingual surfaces of molar provide tripod retention form.
ADA News Bulletin June 2011
ADA News Bulletin August 2011