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MICRO & MACRO RETENTION IN FPD- AN INTRICATE REVIEW.

LAKSHMANA RAO. BATHALA RAO. BATHALA

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Abstract

One important element affecting the long-term viability of fixed partial dentures (FPDs) is retention. It can be broadly divided into two categories: micro retention, which depends on surface treatments and adhesive bonding, and macro retention, which depends on mechanical design elements. A correct taper (612), a sufficient crown height (4 mm in molars, 3 mm in anteriors), and the addition of auxiliary retentive structures like grooves and boxes are all necessary for macro retention. Modern minimally invasive preparation methods seek to maintain tooth structure while improving retention. Optimizing bonding at the material contact is the main goal of micro retention. Airborne-particle abrasion (50 m AlO), tribochemical silica coating (CoJet technology), and functional monomers like 10-MDP are recent inventions that improve the chemical adhesion between zirconia and resin cements. Research has indicated that the combination of mechanical retention and sophisticated adhesive procedures enhances lifespan and clinical results.The most recent advancements in macro and micro retention tactics are highlighted in this analysis, with a focus on how they might improve FPD success. The best retention, durability, and patient satisfaction are guaranteed by combining precision preparation methods with cutting-edge adhesive bonding techniques.

Copyright

Copyright © 2025 LAKSHMANA RAO. BATHALA. This is an open access article distributed under the Creative Commons Attribution License.

Paper Details
Paper ID: IJPREMS50200026983
ISSN: 2321-9653
Publisher: ijprems
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