roots 04/2012

The specialist magazine roots presents the most significant international developments and experiences within the endodontic profession in an easy-to-read format to practitioners around the world. This high gloss, English language magazine is published four times a year and distributed at all major international congresses and exhibitions. roots is sent to a database of 4.000 dentists worldwide (mainly USA, Middle East & Africa, Asia Pacific, and Europe) and gets a wide bonus distribution at the following shows in 2011: IDS, SINO, FDI Mexico City and GNYDM. The content of the magazine is a combination of specialty articles, clinical studies, case reports, industry reports, reviews (meetings, products, etc.), news, and lifestyle articles. Specialists as well as general dentists are informed about new concepts in root canal treatment and the latest advances in techniques and instrumentation to help them keep pace with the rapid changes in this field.

Themen der aktuellen Ausgabe 04/2012

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Editorial: Interdisciplinary dentistry - An absolute essential
Dr Gary Glassman
We are fortunate to live in a society in which we have access to comprehensive health care and in which the level of dental care is considered among the best in the world. Unfortunately, this is not the case for countless other regions in the world.
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Invasive cervical resorption (ICR): A description, diagnosis and discussion of optional management - A review of four long-term cases
John J. Stropko, USA
The external resorptive process of the permanent dentition referred to in this article has been given several different terms over the years, so therefore some confusion exists. Just a few popular labels are extra-canal invasive resorption (ECIR), invasive cervical resorption (ICR), external cervical resorption (ECR), subepithelial external root resorption, and idiopathic external resorption. They all refer to a relatively uncommon form of dental resorption. If left undiagnosed, misdiagnosed, mistreated or untreated, it will usually be quite devastating for a tooth. An Australian dentist, Dr Geoffrey Heithersay, has contributed much to the literature regarding all facets of this type of dental resorption. His work has become the basis of research and treatment. With few changes over the past several years, the aetiology, predisposing factors, classification, clinical and radiological features, histopathology and the treatment of this resorptive process he described are still used in our practice today.1–4,6 For this reason, this article will adopt the same nomenclature used in his numerous publications: invasive cervical resorption (ICR).
latrogenic errors before and after non-surgical root-canal treatment
Dr Rafaël Michiels, Belgium
Several reports in the literature describe iatrogenic errors during root-canal treatment. The most common errors include perforations, ledging, transportation, zipping, overextension, file separation and underfilling. Little emphasis is placed on the preparation of a tooth before starting root-canal treatment, or on the finishing of the tooth after obturation of the root-canal system. On various online forums and in several clinical articles, beautifully executed root-canal treatments are shown with coronal restorations that are less than ideal. This is a serious problem, since it has been demonstrated that a successful outcome depends not only on adequate root-canal treatment, but also on adequate coronal restoration. In this article, I will elaborate on these aspects and present a case as an example.
Fluid dynamics of syringe-based irrigation to optimise anti-biofilm efficacy in root-canal disinfection
Dr Christos Boutsioukis, Netherlands, & Dr Anil Kishen, Canada
A mature bacterial biofilm is composed of multiple layers of bacteria embedded in a self-made matrix formed of extracellular polymeric substance. This substance has the potential to modify the response of the resident bacteria to antimicrobials by acting as a shield against the chemical effects of antimicrobials. There is also a localised high density of bacterial cells in a biofilm structure. This spatial arrangement will expose the cells in the deeper layers of the biofilm to less nutrients and redox potential than the cells on the biofilm surface. Since the degree of nutrient and gas gradients increases with the thickness and maturity of a biofilm, the influence of growth rate and oxygen on the antimicrobial resistance is particularly marked in aged biofilm...
Irrigation for the root canal and nothing but the root canal
Dr Philippe Sleiman, Lebanon
Irrigation is a major step in endodontic treatment. A variety of chemicals are used to achieve what I like to consider the chemical preparation of the root-canal system.
Endodontic management of a hypertaurodontic maxillary first molar - A case report with a two-year follow-up
Drs Jojo Kottoor, Denzil Valerian Albuquerque, Anuj Bhardwaj, Sonal Dham & Natanasabapathy Velmurugan, India
Taurodontism is a morphological variation in which the body of the tooth is enlarged and the roots are reduced in size. Taurodontic teeth have large pulp chambers and apically positioned furcation.1 This variation was first described by Gorjanovi´c-Kramberger;2 however, the term ?taurodontism? was first introduced by Sir Arthur Keith3 to describe molar teeth resembling those of ungulates, particularly bulls. The term ?taurodontism? comes from the Latin term ?tauros?, which means ?bull? and the Greek term ?odus?, which means ?tooth? or ?bull tooth?.4 Such morphological variations are an endodontic challenge and even more difficult to treat when additional roots and/or canals are present. The endodontic management of one such taurodontic molar is reported in this case report...
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