scholarly journals Evaluation of the Antimicrobial Efficacy of Different Types of Photodynamic Therapy on the Main Pathogenic Bacteria of Peri-Implantitis

2020 ◽  
Author(s):  
Dragana Gabrić ◽  
Ana Budimir ◽  
Ivona Bago ◽  
Luka Marković ◽  
Verica Pavlić ◽  
...  

Every year, with the increasing number of dental implants placed, there is an increase in the incidence of peri-implantitis. The treatment of peri-implantitis is very complex and among other things includes mechanical and chemical decontamination of the implant surfaces, which is very challenging and often not predictable due to the surface properties of the implants. Photodynamic therapy recently has emerged as a potential treatment alternative or adjuvant treatment to peri-implantitis. Its potential to decontaminate implant surfaces without damaging the surface and the implants surrounding tissues has generated much interest in the scientific community. The possibilities of photodynamic therapy in treatment of peri-implantitis are opening new challenges in establishing optimal conditions for the clinical application of aPDT. Due to its non-invasiveness and ease of use this method can be effective when applied alone or as an adjunct therapy to conventional methods for treating peri-implantitis.

2001 ◽  
Vol 9 (1) ◽  
pp. 11-25
Author(s):  
Kerstin van Dam-Kleese ◽  
Michael Hopewell

The most valuable assets in every scientific community are the expert work force and the research results/data produced. The last decade has seen new experimental and computational techniques developing at an ever-faster pace, encouraging the production of ever-larger quantities of data in ever-shorter time spans. Concurrently the traditional scientific working environment has changed beyond recognition. Today scientists can use a wide spectrum of experimental, computational and analytical facilities, often widely distributed over the UK and Europe. In this environment new challenges are posed for the Management of Data every day, but are we ready to tackle them? Do we know exactly what the challenges are? Is the right technology available and is it applied where necessary? This part of enabling technologies investigates current hardware techniques and their functionalities and provides a comparison between various products.


2011 ◽  
Vol 77 (1) ◽  
pp. 58-59 ◽  
Author(s):  
Qian Li ◽  
Yang Liu ◽  
Wenzhi Li ◽  
Shiqing Feng

2019 ◽  
Vol 49 (6) ◽  
pp. 493-509 ◽  
Author(s):  
Evgeny Maslanov

The article analyzes the conception of a trading zone as a space of action and belief coordination. P. Galison proposed the conception based on anthropological and linguistic analogies. The article reviews the anthropological analogies aimed at building up the conception and the legitimacy of their use. The conclusion is that the analogies used are not accurate enough. If the tribes interacting in trading zones have a common history, material culture, and practices, they can hardly have significant differences. If they are not in possession of all these characteristics, they are unlikely to remind us of different groups of scientists who participate in common researches. The article also contains the hypothesis that acceptance of a common habitus is a condition subject to which the scientists can arrange the mutual understanding space. It issues new challenges to the scientific community, as all people related to university education also accept the scientists’ habitus.


2004 ◽  
Vol 30 (5) ◽  
pp. 794-798 ◽  
Author(s):  
DANIËLLE I. M. KUIJPERS ◽  
NICOLE W. J. SMEETS ◽  
GERTRUUD A. M. KREKELS ◽  
MONIQUE R. T. M. THISSEN

2015 ◽  
Vol 08 (04) ◽  
pp. 1550017 ◽  
Author(s):  
Xuewei Jiang ◽  
Zhichao Fan ◽  
Yili Yu ◽  
Chenying Shao ◽  
Yuanzhen Suo ◽  
...  

Photodynamic therapy (PDT) has been commonly used in treating many diseases, such as cancer and infectious diseases. We investigated the different effects of PDT on three main pathogenic bacteria of periodontitis — Prevotella melaninogenica (P.m.), Porphyromonas gingivalis (P.g.) and Aggregatibacter actinomycetemcomitans (A.a.). The portable red light-emitting diode (LED) phototherapy device was used to assess the exogenous PDT effects with different light doses and photosensitizer concentrations (Toluidine blue O, TBO). The portable blue LED phototherapy device was used to assess the endogenous PDT effects with the use of endogenous photosensitizers (porphyrin) under different light doses. We found out that both exogenous and endogenous PDT were able to restrict the growth of all the three bacteria significantly. Moreover, the optimal PDT conditions for these bacteria were obtained through this in vitro screening and could guide the clinical PDT on periodontitis.


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