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Endodontic Update: 2007 AAE Annual Session (and then some). Scott E. Shuler, DMD,MS. Biological Topics. Auto and Replantation Bioadhesives (Tissue-Tak), TGF-Beta, BMT to promote ligament attachment Propolis extract to prevent resorption. Regenerative Endodontics.
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Endodontic Update:2007 AAE Annual Session(and then some) Scott E. Shuler, DMD,MS
Biological Topics • Auto and Replantation • Bioadhesives (Tissue-Tak), TGF-Beta, BMT to promote ligament attachment • Propolis extract to prevent resorption
Regenerative Endodontics • Def: Biologically based procedures designed to replace damaged structures. • “Tissue engineering”—guided regeneration of pulp-like tissue from cellular precursors (stem cells)
Regenerative Endodontics • Growth of new cells in culture from pulp precursors • “Emdogain” (enamel matrix protein formulation) showed potential for pulp regeneration • Discussion of relative costs and concerns
Clinical Topics • Novel uses for MTA • As primary obturation material in short roots,primary teeth • As capping material in IP with immature apices
Clinical Topics • Bone preservation and regeneration during endodontic surgery • Flap design considerations, microsurgery • Grafting and matrix placement • Management of Endodontic flare-ups
Product Buzz • Instrumentation • “All the rage” at previous meetings • Axxess
Product Buzz • Irrigation: MTAD (Biopure) • New irrigant introduced by Torabinejad in 2005 • What’s in it?
Product Buzz Benefits: • Antimicrobial (<NaOCl) • Removes smear layer • Somewhat dissolves tissue (<NaOCl) Drawbacks: • Cost: Roughly $4 per canal • Benefit is questionable over traditional irrigation (Kho, Baumgardner J Endod 2006)
Product Buzz • Hydraulic Irrigation (ANP—Endovac) • “Positive pressure irrigation works only to the orifice of the needle in a closed system.” • Chow, J Endod, 1993 • Schoeffel (USC)—Endovac (ANP) • “Sewer pump” vs. “fire hose” Concern--expression of irrigant beyond apex.
Bonded Resin Obturation • What is it? • Attempt to apply dentin adhesive technology to root canal obturation • Products: Resilon, Epiphany, EndoRez • Claimed benefits: • “Monoblock”: less coronal leakage • Superior apical seal • Resistance to root fracture
Bonded Resin Obturation • “Monoblock” questioned by Baumgartner • Zurich study: seal similar to gutta percha and AH26, but deteriorated over time • UT-SA: no fracture resistance • Superior to “single cone” techniques of Thermafil, Soft-core HD, etc, but so is everything else!
Dental Implants • Change in Meeting Sponsorship • “Feel” (2005 versus 2007)
Dental Implants • Papers presented: • “Real Cost” comparison (Case Western) • “Success” comparison (USC, Case) • Sample bias/ Exclusion factors • Criteria (“success” vs. “survival”) • Adjusted endo survival rates: • USC 96.8% • Case Western 94.4% • Delta Dental 96.9% • Taiwan 93-96%
Dental Implants • Summary: • Implants are highly successful, but so is uncompromised endodontic therapy, and at considerably less cost • Better visualization, diagnosis, instrumentation, obturation, and management of restorative and periodontal aspects can eliminate many causes of failure
Dental Implants • Case selection is the key to predictability, so future research should focus on determining compromising factors • Implants should be considered before alternative treatments in cases with predictably poor prognoses
Endodontic Update 2007 Thank You!! Questions?