In vivo sealing ability of calcium hydroxide-containing root canal sealers

The present study was performed in order to evaluate, by the autoradiographic technique the sealing properties of three root canal sealers, combined with gutta - percha and silver points, in vitro. A total of one hundred and five extracted human, single root teeth were used and divided into five groups according to the filling combinations tested. The teeth were filled, using two techniques, of the single and multiple points. Autoradiographies, using S35, in all instances, were performed and the results obtained were compared with the respective dental radiograms The obtained results lead to the following conclusions: 1. Silver and gutta - percha points may be always combined with sealers. Otherwise the root canal is not adequately sealed. 2. A gutta - percha point, without sealer, produced a superior filling to silver point. 3. It seems possible to obtain a complete obturation of the rootcanal with the combination of gutta - percha and Grosman’s Sealer using the multiple - point technique. 4. It follows in effectivness, the combination of silver point and Grossman’s sealer.5. The combination of gutta - percha point with Zinc - oxide eugenol sealer and chloropercha are the least efficient. 6. Finally it must be stressed that since the conditions of the present study do not correspond exactly to those encountered in vivo, extrapolation of the results obtained, to man has to be performed with caution.

Download Full-text

Comparison of calcium and hydroxyl ion release ability and in vivo apatite-forming ability of three bioceramic-containing root canal sealers

Clinical Oral Investigations ◽

10.1007/s00784-021-04118-w ◽

2021 ◽

Author(s):

Razi Saifullah Ibn Belal ◽

Naoki Edanami ◽

Kunihiko Yoshiba ◽

Nagako Yoshiba ◽

Naoto Ohkura ◽

...

Keyword(s):

Root Canal ◽

Ion Release ◽

Hydroxyl Ion ◽

Root Canal Sealers

Download Full-text

Histological analysis of the biocompatibility of three different calcium hydroxide-based root canal sealers

Journal of Applied Oral Science ◽

10.1590/s1678-77572006000500014 ◽

2006 ◽

Vol 14 (5) ◽

pp. 376-381 ◽

Cited By ~ 7

Author(s):

Heloisa Helena Pinho Veloso ◽

Roberto Alves do Santos ◽

Túlio Pessoa de Araújo ◽

Denise Piotto Leonardi ◽

Flares Baratto Filho

Keyword(s):

Calcium Hydroxide ◽

Study Design ◽

Inflammatory Reaction ◽

Root Canal ◽

Histological Analysis ◽

Subcutaneous Tissue ◽

Inflammatory Cells ◽

Control Groups ◽

Tissue Reactions ◽

Root Canal Sealers

OBJECTIVE: To histologically evaluate the behavior of the subcutaneous tissue of rats after placement of polyethylene tubes filled with calcium hydroxide-based root canal sealers (SealapexTM, ApexitTM e Sealer 26TM). STUDY DESIGN: The study employed 60 rats, which were divided into eight groups, being four experimental groups with 10 rats each, and four control groups with five rats. Analysis was conducted at 48 hours, 7, 21 and 60 days. RESULTS: Histological analysis revealed that all sealers were irritant; however, the intensity varied between each sealer and as a function of time. At the initial periods (48 hours and seven days), all materials demonstrated similar outcomes, with inflammatory reaction from severe to moderate, respectively. At the final periods (21 and 60 days), the tissue reactions to the implants containing SealapexTM displayed an active status yet with regression, compared to the ApexitTM and Sealer 26TM. The control groups exhibited less inflammatory cells than the experimental groups, keeping a reaction status with regression. CONCLUSIONS: The results achieved in this study revealed that the SealapexTM sealer was the most compatible, followed by ApexitTM and Sealer 26TM.

Download Full-text