CD-1 Fallacy or Fact - the Necessity of Patency

5 (10 votes)

CE Hours: 1.5

Description: The idea of moving a small instrument through the apical constriction with the intention of preventing debris accumulation and canal blockage during root canal instrumentation, as well as disrupting bacterial biofilms in the foraminal area, has gained increasing popularity among clinicians. Within this presentation the varying histologic and microbiologic conditions of the apical pulp tissue present at the initiation of root canal treatment are illustrated. On the basis of histologic and histobacteriologic observation of a large number of human biopsies, the advantages and disadvantages of this procedure will be critically analysed.

  • Explain the different histologic conditions present in the various clinical scenarios.
  • List the limitations of current instrumentation techniques in removing vital or necrotic tissue from the apical ramifications and other anatomical irregularities.
  • Discuss the impact of apical patency on the wound healing process.


Open to view video.
9 Questions
CE Test
5 Questions  |  Unlimited attempts  |  4/5 points to pass
5 Questions  |  Unlimited attempts  |  4/5 points to pass
1.50 CE credits  |  Certificate available
1.50 CE credits  |  Certificate available

Domenico Ricucci, D.D.S., M.D.

Dr. Domenico Ricucci received his degree in General Medicine from “La Sapienza” University of Rome in 1982, and his DDS from the same University in 1985. Since then on he has maintained private dental practices limited to endodontics. In addition to his private practice, Dr. Ricucci was Professor of Cariology at “Magna Graecia” University of Catanzaro, Italy in 2002 -2003. He served in the Research Committee of the European Society of Endodontology from 1999 to 2005. Dr. Ricucci’s primary research interest relates to pulpal and periapical tissue reactions to caries and treatment procedures, biofilms in endodontic infections, etiology of RTC treatment failure, pulp regeneration/revascularization. Since 1998 he has run his own histology laboratory and has developed considerable skills in hard tissue preparations for light microscopy. Dr Ricucci has published 110 papers and has lectured both nationally and internationally. He has authored the Textbook and Atlas “Patologia e Clinica Endodontica”, the textbook and atlas “Endodontology. An integrated biological and clinical view”. He has also authored or co-authored eighteen book chapters.

Domenico Ricucci, D.D.S., MD

I declare that I have no proprietary, financial, or other personal interest of any nature or kind in any product, service, course, and/or company, or in any firm beneficially associated therewith, that will be discussed or considered during the proposed presentation.