scholarly journals P-17 Identification of Allergic Contact Sensitization Induced by Ingredients of Dental Preparations for Root Canal Filling

1996 ◽  
Vol 50 (4) ◽  
pp. 734
Author(s):  
Keiko Ozumi ◽  
Tomoko Ohsumi ◽  
Sen Higashi ◽  
Yohichiroh Soh ◽  
Kayoko Kuroki
Keyword(s):  
Root Canal ◽  
Contact Sensitization ◽  
Root Canal Filling ◽  
Allergic Contact

Allergic contact stomatitis from paraformaldehyde and copal in a dental root canal filling

2003 ◽  
Vol 49 (3) ◽  
pp. 164-164 ◽  
Author(s):  
Mizuho Kimura ◽  
Shirou Miura ◽  
Shigeo Ozawa ◽  
Akira Kawada
Keyword(s):  
Root Canal ◽  
Root Canal Filling ◽  
Allergic Contact

Scanning Electron Microscope Study of Root Canal Filling (First Report)

1987 ◽  
Vol 41 (6) ◽  
pp. 1238-1243
Author(s):  
Yohichiroh Soh ◽  
Junroh Tahara ◽  
Takashi Hayashikawa ◽  
Masatoshi Hitaka ◽  
Kohzoh Kubota ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Root Canal ◽  
Microscope Study ◽  
Electron Microscope Study ◽  
Root Canal Filling ◽  
Scanning Electron Microscope Study ◽  
First Report ◽  
Scanning Electron

Eyelid Dermatitis and Contact Sensitization to Nickel: Results from an Italian Multi-Centric Observational Study

2019 ◽  
Vol 19 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Alessandro Borghi ◽  
Monica Corazza ◽  
Elisa Maietti ◽  
Cataldo Patruno ◽  
Maddalena Napolitano ◽  
...  
Keyword(s):  
Risk Factor ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Contact Sensitization ◽  
Main Risk Factor ◽  
Nickel Allergy ◽  
Cross Sectional ◽  
Triggering Factor ◽  
Irritant Action ◽  
Allergic Contact

Background: Due to the sensitizing constituents of eye cosmetics, allergic contact dermatitis is considered a frequent cause of eyelid dermatitis. An association between eyelid dermatitis and nickel contained in make-ups remains controversial. Objective: The study aimed to assess the association between nickel allergy, the use of pigmented makeup products and self-reported eyelid dermatitis. Method: This multi-centric, cross-sectional study enrolled 165 women sensitized to nickel (patients) and 103 women without intolerance to metals (controls). We recorded: demographics, atopy, use of pigmented eye cosmetics (mascara, eyeshadow, eyeliner, eyebrow pencil), and previous eyelid dermatitis. Among the patients, any co-sensitization to cosmetics or metals was recorded. Results: 87.3% of the patients and 91.3% of the controls reported their use of eye make-up; 44.9% and 52.4%, respectively, reported previous episodes of eyelid dermatitis, without significant differences. The occurrence of eyelid dermatitis was significantly associated with the use of eye make-up products, both in general and considering each product separately. Age, atopy, or co-sensitization to other metals or cosmetics did not affect the occurrence of eyelid dermatitis. Conclusion: Nickel allergy should not be considered the main risk factor for eyelid dermatitis. The use of pigmented eye make-up may be a triggering factor for eyelid dermatitis, probably due to an irritant action.

scholarly journals Effect of Antibacterial Root Canal Sealer on Persistent Apical Periodontitis

Antibiotics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 741
Author(s):  
Zheng Wang ◽  
Ge Yang ◽  
Biao Ren ◽  
Yuan Gao ◽  
Xian Peng ◽  
...  
Keyword(s):  
Enterococcus Faecalis ◽  
Therapeutic Effect ◽  
Root Canal ◽  
Apical Periodontitis ◽  
Control Group ◽  
Root Canal Sealer ◽  
Root Canal Filling ◽  
First Time ◽  
Cone Beam Computer Tomography ◽  
Better Than

The infection of Enterococcus faecalis and its interacting microorganisms in the root canal could cause persistent apical periodontitis (AP). Antibacterial root canal sealer has favorable prospects to inhibit biofilms. The purpose of this study was to investigated the antibacterial effect of root canal sealer containing dimethylaminododecyl methacrylate (DMADDM) on persistent AP in beagle dogs for the first time. Persistent AP was established by a two-step infection with Enterococcus faecalis and multi-bacteria (Enterococcus faecalis, Lactobacillus acidophilus, Actinomycesnaeslundii, Streptococcus gordonii). Root canal sealer containing DMADDM (0%, 1.25%, 2.5%) was used to complete root canal filling. The volume of lesions and inflammatory grade in the apical area were evaluated by cone beam computer tomography (CBCT) and hematoxylin-eosin staining. Both Enterococcus-faecalis- and multi-bacteria-induced persistent AP caused severe apical destruction, and there were no significant differences in pathogenicity between them. DMADDM-modified sealer significantly reduced the volume of periapical lesion and inflammatory grade compared with the control group, among them, the therapeutic effect of the 2.5% group was better than the 1.25% group. In addition, E.faecalis-induced reinfection was more sensitive to the 2.5% group than multi-bacteria reinfection. This study shows that root canal sealer containing DMADDM had a remarkable therapeutic effect on persistent AP, especially on E. faecalis-induced reinfection.

scholarly journals Development of A Nano-Apatite Based Composite Sealer for Endodontic Root Canal Filling

2021 ◽  
Vol 5 (1) ◽  
pp. 30
Author(s):  
Angelica Bertacci ◽  
Daniele Moro ◽  
Gianfranco Ulian ◽  
Giovanni Valdrè
Keyword(s):  
Citric Acid ◽  
Liquid Phase ◽  
Calcium Phosphate ◽  
Root Canal ◽  
Acid Attack ◽  
Root Canal Filling ◽  
Bioactive Materials ◽  
Dentinal Tubules ◽  
Sealing Capacity ◽  
Endodontic Sealers

Recently, endodontic sealers based on injectable bioactive materials were proposed to improve the filling of anatomical irregularities during root canal obturation. In this context, this preliminary work investigated the possibility of realizing a new calcium phosphate-based composite sealer for root canal filling with an optimized composition on setting kinetics and dentin tubules occlusion. Several calcium phosphate/liquid phase mixtures were initially evaluated for their workability, finding two suitable formulations. Both of them contained 66 wt.% of a nano-apatite-based cement (solid powdered phase). The liquid phase (34 wt.%) comprised 13.6% propanediol and 20.4% PEG 1000 (formulation 1), and formulation 2 comprised 27.2% glycerin and 6.8% PEG 200 (formulation 2). Then, these formulations were tested by means of permeability measurements and observation by scanning electron microscopy of treated model dentin samples. Both formulations succeeded in occluding dentinal tubules: the first one was able to create a full-bodied layer on dentin surface and, moreover, to resist, at least to a large extent, against citric acid attack. The second one showed a lower effectiveness after citric acid exposure. The composite compound that better satisfied the overall required characteristics of use, workability and sealing capacity was formulation 1.

The adaptation achieved by four root canal filling techniques as assessed by three methods

1992 ◽  
Vol 37 (6) ◽  
pp. 439-444 ◽  
Author(s):  
Constantine Amditis ◽  
Stephen M. Bladder ◽  
Roland W. Bryant ◽  
George H. Hewitt
Keyword(s):  
Root Canal ◽  
Root Canal Filling

Apical extrusion of thermoplasticized gutta-percha used as a root canal filling

1988 ◽  
Vol 14 (3) ◽  
pp. 128-132 ◽  
Author(s):  
Gary M. Ritchie ◽  
Dale M. Anderson ◽  
Joseph S. Sakumura
Keyword(s):  
Root Canal ◽  
Root Canal Filling ◽  
Gutta Percha ◽  
Apical Extrusion

Incidence of dentinal defects after root canal filling procedures

2010 ◽  
Vol 43 (11) ◽  
pp. 995-1000 ◽  
Author(s):  
H. Shemesh ◽  
P. R. Wesselink ◽  
M.-K. Wu
Keyword(s):  
Root Canal ◽  
Root Canal Filling
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