Recent advances in posts 121 /certified fixed orthodontic courses by Indian dental academy

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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078

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  • 1. INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  • 2. Recent Advances in Posts www.indiandentalacademy.com
  • 3. Contents • • • • Introduction Objectives of Post Types of Post Bio-mechanical Principles of Post Selection -Form of Post -Surface Texture -Importance of Post Length • Cast Post • Stainless Steel post www.indiandentalacademy.com
  • 4. • Endo Post • Recent Posts - Composi Post - Flexi Post - Ceramic Post - Luscent Anchor Post Technique Conclusion Acknowledgements www.indiandentalacademy.com
  • 5. Introduction • The Post Endodontic Treatment of Teeth Presents the Dental Practitioner With the Dilemma of Selecting From a Large Array of Materials,techniques and Designs. • In Addition,increasingly sophisticated Dental Materials Constantly Are Being Introduced Serving to Alter Not Only the Procedure,but the Very Paradigms of Treatment. www.indiandentalacademy.com
  • 6. Objectives of Post • Aid in Retaining a Core to Restore Lost Tooth Structure for Retention of a Restoration. • Select a Post System That Provides Maximum Retention, Yet Removes As Little As Possible of the Remaining Subgingival Tooth Structure. www.indiandentalacademy.com
  • 7. Types of Post • • • • • Tapered , Smooth-sided Post System Parallel –Sided , serrated & Vented Post System Tapered , Self –Threading Post System Parallel –Sided , threaded Post System Parallel – Sided , threaded , Split-shank Post System www.indiandentalacademy.com
  • 8. Bio –mechanical principles of post selection Form of post • Parallel Posts Are More Retentive Than Tapered Posts. • Parallel Posts Resist Tensile , Shear and Torquing Forces Better Than Tapered Posts and Distribute Stress More Evenly Along Their Length During Function,providing Greater Protection Against Dentin Failure. www.indiandentalacademy.com
  • 9. Surface Texture • Has a Dramatic Effect on Retention & Stress Distribution. • Retention Decreases As One Progresses From Threaded to Serrated to Smooth Surface Configurations. Importance of Post Length • Increasing post length has a direct affect on retention • Increasing post length has a significant effect on stress distribution • A reduction of compression and shear concentrations occurs with increased post length www.indiandentalacademy.com
  • 10. Cast Post • Only system that can achieve accurate adaptation to all root canal configurations • Least retentive of all post • Generates high levels of wedging stress • Indicated when canal system has been over prepared / in incomplete root www.indiandentalacademy.com
  • 11. Stainless steel post • Posts are available in wrought,precious & non-precious alloys. • Can be used with a variety of direct and indirect techniques www.indiandentalacademy.com
  • 12. Endopost • High fusing precious metal alloy • It was the first of the practical manufactured aids to post fabrication that consistently & reliably afforded post length and fit www.indiandentalacademy.com
  • 13. Composi post • Carbon fiber reinforced root canal post. • In 1990 Duet et al,described a nonmetallic material for the fabrication of posts based on the carbon-fiber reinforcement principle. • Carbon fiber posts are made of unidirectional carbon fibers embedded in an epoxy matrix. www.indiandentalacademy.com
  • 14. • Wide variety of posts are available and include parallelsided,tapered smooth & serrated forms • Esthetic versions of this post have a quartz exterior that makes the post tooth colored. • These post have a high tensile strength and modulus of elasticity similar to dentin,has the lowest values for stiffness,elastic limit,and strength of the post. www.indiandentalacademy.com
  • 15. Flexi –Post • Flexi-post is the patented splitshanked,parallel-threaded posts. • Achieves maximum retention with minimal stress • Split-shank design absorbs stress of insertion by gradually closing under pressure.The post conforms & adapts to the root rather than the root adapting to the post. www.indiandentalacademy.com
  • 16. • Based on the studies “The flexi post system displayed twice the retention of the other systems evaluated” • Retention comparable to natural dentin with minimal insertional & functional stress. • Available in five sizes 00,0,1,2,3. www.indiandentalacademy.com
  • 17. Ceramic post • Advantages Esthetics • Dis-advantages Cost Long term data are limited Ceramic materials may have a tendency to fracture • Indications Teeth requiring very translucent all-ceramic crowns • Contra-indications Metallic ceramic crown is planned www.indiandentalacademy.com
  • 18. Luscent Anchor Post Technique • The luscent anchor post (Dentatus) is a fiber glass,clear resin post • It is designed to refract & transmit natural tooth colors for esthetic post & foundations. • Is Radiolucent • Designed to be placed passively in prepared canals • Available in 3 diameters. www.indiandentalacademy.com
  • 19. Parapost Fiber White Technique • A filled resin,mono-directional fibers matrix with a flexural modulus that very closely approximates that of the natural dentin • White translucent • Available in four diameters www.indiandentalacademy.com
  • 20. • Zirconium post • Light cure composite post www.indiandentalacademy.com
  • 21. conclusion • Research on the biomechanics of posts and cores over the past decade has replaced many of our traditional ideas with data that more clearly direct the dentist as to how and when to best restore these teeth. • Patients have benefited from recent developments in post and core technology and continue to reap the benefits of research & development. www.indiandentalacademy.com
  • 22. Acknowledgements • I Sincerely Thank My H.O.D Dr.Geetha.k Patil, Dr.Nagaraj,Dr.Subash, Dr.Shilpa Shetty, Dr.Manjunath.Without Whose Help and Continued Support This Presentation Would Not Have Been Possible. www.indiandentalacademy.com
  • 23. Thank you www.indiandentalacademy.com