International Endodontic Journal 2008 Vol.
International Endodontic Journal: Editorial. Some endodontic pathogens that grow as single-species biofilms, however, are difficult to eradicate.ĭummer, PMH Abbott, P Aesaert, G Ahlquist, M Atkin, P Bailey, G Baumann, M Berggreen, E Bergmans, L Bjørndal, L Bogaerts, P Bolhuis, P Briggs, P Briseño, B Camilleri, J Canavan, D Carrotte, P Chadwick, B Chandler, N Cheung, G Chong, BS Cohen, D Cole, B Corbett, I Corson, M Cotti, E De Bruyne, M De Moor, R Deery, C Drage, N Duckmanton, P ElAyouti, A Emery, C Endal, U Estrela, C Fairbrother, K Figdor, D Figueiredo, J Fouad, A Franklin, P Fristad, I German, M Gilmour, A Glickman, G Gluskin, A Gruythuysen, R Gulabivala, K Gutmann, J Haapasalo, M Haug, SR Hayes, J Heath, N Horner, K Hørsted-Blindslev, P Hoskinson, T Hülsmann, M Ibbetson, R Jacobsen, P Kirkevang, LL Kvist, T Lambrechts, P Lloyd, H Locke, M Löst, C Love, R Lumley, P MacHtou, P Mannocci, F Manogue, M McCabe, P McConnell, R Messer, H Molander, A Muthukrishnan, A Myers, P Nair, R Nattress, B Ng, YL Okiji, T Ørstavik, D Parashos, P Patel, S Peters, C Peters, L Peters, O Petersson, K Pitt-Ford, H Pitt Ford, T Portenier, I Preshaw, P Qualtrough, A Rees, J Regan, J Reichenmiller, K Reit, C Rhodes, J Saunders, B Saunders, E Schäfer, E Seccombe, G 2008. CONCLUSIONS: Photo-activated disinfection is not an alternative but a possible supplement to the existing protocols for root canal disinfection as the interaction between light (diode laser) and associated dye (TBO) provides a broad-spectrum effect. anginosus), bacterial eradication was substantially reduced in deep layers. But when biofilms were present (2 and 6 days for E. The ESEM experiment showed that individual cells or monolayers were easily eliminated with PAD. Laser alone had no significant effect on the load nor did the dye without laser. nucleatum (P < / 0.0001), but no sterilization. faecalis (P < / 0.05) and a 98.5% kill of F. RESULTS: Treatment of root canals with PAD (15 J) caused a significant reduction of the bacterial load, resulting in a 93.8% kill of S. Resultant colony-forming unit counts were associated with observations of cell structural changes using environmental scanning electron microscopy (ESEM) on inoculated dentinal surfaces (n = 22, two controls) before (1, 2 and 6 days of incubation) and after treatment with PAD. METHODOLOGY: Root canals of extracted teeth (n = 38) were prepared (size 30, 0.10 taper), autoclaved, divided into three groups and two negative controls inoculated (Streptococcus anginosus, Enterococcus faecalis or Fusobacterium nucleatum) and treated (PAD, laser, dye or positive control) according to a cross-sectional design. For small void detection, all digital intraoral techniques performed better than intraoral analogue and CBCT images.ĪIM: To test the hypothesis that photo-activated disinfection (PAD) has a bactericidal effect on pathogens inoculated in root canals, with emphasis on biofilm formation/destruction. Voids larger than 300 mum were determined with all imaging techniques. CONCLUSIONS: Void size and imaging technique were main determining factors.
For the smaller voids, there were significant differences between the 5 imaging techniques at different void sizes and different root levels. 'Void size' was a main determining factor as all voids larger than 300 microm were determined with all techniques.
RESULTS: There was no evidence that the factor 'root level' affected void detection in root fillings. A generalized mixed model and ANOVA analysis were used on the acquired data (Tukey-Kramer correction). The teeth were also imaged using CBCT (3D Accuitomo, Morita, Japan).
Digora optime lubrication psp#
Each sample was imaged, using a Minray X-ray tube (Soredex, Helsinki, Finland) at optimal clinical settings combined with Vistascan PSP (Dürr Dental, Bietigheim-Bissingen, Germany), Digora Optime PSP (Soredex), Sigma CCD (Instrumentarium, Tuusula, Finland) and E-speed films (Agfa-Gevaert, Mortsel, Belgium). To simulate filling voids of known dimensions, the wires were removed after the sealer had set. Calibrated steel wires of five different diameters (200, 300, 350, 500, 800 microm) were inserted respectively in the canal after the injection of a sealer. METHODOLOGY: Two straight root canals in canine teeth were prepared. AIM: To compare void detection in root fillings using different radiographic imaging techniques: intraoral analogue, intraoral digital and cone beam CT (CBCT) images and to assess factors influencing small void detection.