AH26 si alte rashini ...

[drdream]

"One of the most commonly used root filling materials in Australia is a material called AH26. This is commonly used throughout the world. Look at what the manufacturer says about its own material in its Material Safety Data Sheet:

Dangerous Components; Bismuth Oxide, Methanamine, Silver, Titanium Dioxide .

Dangerous Breakdown Products; Formaldehyde, Nitrogen Oxides, Ammonia

Warnings: Skin Irritant, Eye Irritant, Sensitization Inhalation and Skin contact. After Swallowing: Rinse mouth thoroughly and then drink plenty of water. Call a doctor immediately.
Ecological Information: Do not allow product to reach ground water, water course or sewage. Do not allow to enter sewers/surface or ground water. Water Hazard class 2 (German regulation) (Self assessment) : hazardous for water.
"


Why is the common practice of root treatmetn dangerous

- the bits that get left out of the story


How would you like to have this material implanted into your body?

se intreaba un dds ....

[drdream]

sa concluzionam si cu niste studii:
Link [Necesita inregistrare pentru acces.]

Link [Necesita inregistrare pentru acces.]

concluzia e ca ah26 elibereaza formaldehida fratilor......

separat de asta in datasheetu lu dentsply zice ca heating generates toxic gases....

adica verticala la cald......

ce zic endodontii nostrii de pe forum de asta???????????

[robbycarlos]

hey Dream, nu e ceva nou, se stie asta....

deci, ce sa zicem decat ca stim acest aspect si ca de aia jonglam intre doua clase de sealeri, adica ZOE sau AH26, fiecare cu unele defecte...si alegi intre resorbtie mare la ZOE (pierdere de volum 11 % la catev aluni) si eliminare temporara !!! de formaldehida din AH26.....

aparitia temporara la AH26 de formaldehida nu este ceva foarte grav, deoarece acest sealer este aprobat de aceleasi foruri care nu recomada folosirea pastelor cu paraformaldehida, special pt ca este un produs de reactie ce se reduce imeidat in cateva zile....Cred ca Zeno poate sa dea toate detaliile la faza asta...

In rest, vis a vis de verticala la cald si AH26 sau ZOE, cel mai bine intr-adevar e sa faci cu ZOE.....

[MDSK]

AH Plus nu contine formaldehida si nici nu apar gaze toxice la incalzire. (verticala la cald)

AH Plus a fost dezvoltat tocmai pentru a se reusi eliminarea formaldehidei din AH26.

[drdream]

Publicat initial de MDSK

AH Plus nu contine formaldehida si nici nu apar gaze toxice la incalzire. (verticala la cald)

AH Plus a fost dezvoltat tocmai pentru a se reusi eliminarea formaldehidei din AH26.

si tu ii crezi?

[Kitty1604]

Ok...ZOE...si daca vrei sa cimentezi un fiber post...cum se impaca ZOE cu compozitul???? Din cate stiu eu inhiba reactia de polimerizare a compozitului....

[aurelian]

mai sunt si alte sealer-uri, de exemplu pe baza de ionomeri...
dar stati ca nu e chiar asa cu ah
faza de clatire din abundenta e ca e foarte lipicios, ca orice rasina epoxi, apoi intradevar poate da alergii
iara faza cu formaldehida, zice ca da urme, urme nu cat este in forfenan care pana face priza are timp sa faca mai rau...
oricum nu formolul e problea ci mai mult fenolii si derivatii lor , cam tot ce e substanta ce contine nucleul aromatic da cancere....asa ca....
formolul intre noi fie vorba(asta la animale) se folosea chiar ca antidot in unele infectii la cai, deci nu el e problema....

[zeno_florita]

da

[sorsirbu]

Objective: To evaluate and compare the sealability of root fillings in extracted teeth by using AH 26 and AH Plus in conjunction with three different obturation techniques. Method and materials: Root canals of 940 single-rooted teeth were prepared according to the crown-down/stepback technique (using both 2.5% NaOCI and File-Eze) before lateral condensation and hybrid condensation of gutta percha or obturation with Thermafil. Teeth were immersed in India ink for 90 hours after storage for 1 day, 1 week, 2 weeks, 1 month, and 6 months. The roots were split longitudinally, and the extent of dye penetration was measured using a stereomicroscope. Statistical analysis was performed using Kruskal-Wallis test and Mann-Whitney U test. Results: There were no statistically significant differences in apical leakage within the AH 26 and the AH Plus groups, nor between the two sealer groups, at any observation period. Coronal leakage was significantly higher for Thermafil compared to hybrid condensation at 1 day, 1 week, and 2 weeks both for AH 26 and AH Plus. Coronal leakage was higher only for Thermafil compared to lateral condensation at 1 week for AH 26 and for lateral condensation compared to hybrid condensation at 1 week for AH Plus. Conclusion: Both AH 26 and AH Plus, when used with an identical gutta-percha obturation technique, resulted in comparable sealability at all evaluation times and in comparable coronal sealability at 1 and 6 months.

[sorsirbu]

The purpose of this study was to determine whether AH 26 and AH Plus have in vitro oestrogenic effects.


Methodology MCF-7 breast cancer cells were trypsinized and plated in 24-well plates at initial concentrations of 10 000 cells per well in 5% FBS in DME. Cells were allowed to attach for 24 h; then the seeding medium was replaced with 10% CDHuS-supplemented phenol red-free DME. Different concentrations of the test compound were added to sample wells (AH 26 and AH Plus at 1/100 to 1/1 000 000 dilutions), 10 pm estradiol-17β to positive control, and no substance to negative control (hormone-free control cells). The assay was stopped after 144 h.


Results AH 26-powder induced MCF-7 cell proliferation in a dose-dependent manner. The cell yield obtained with AH 26-powder at 1/100 dilution sample was 2.5-fold greater than in control cultures. The sample prepared with mixed AH 26 paste/powder 1 : 1 also induced MCF-7 cell proliferation, but showed less potency than AH 26-powder alone. The cell yield obtained with AH 26 paste/powder at 1/100 dilution sample was 1.9-fold greater than in control cultures. AH Plus did not show in vitro oestrogenic effect.
Sursa eugenol.ro : eugenol.ro http://www.eugenol.ro/forum/endodontie/1365-ah26-rashini/


Conclusions AH 26 showed in vitro oestrogenic effect, but not AH Plus. The endodontist must consider the possible oestrogenic effect of AH 26, as well as the cytotoxic effects of root filling materials, and avoid the leakage of sealer through the apex during root canal treatment.

[drdream]

acu depinde si de cine face studiile

[zeno_florita]

efect estrogenic are si bis-fenol A ce provine din degradarea enzimatica in cavitatea bucala a monomerului Bis-GMA existent in majoritatea compozitelor.