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Single cone obturation & Bioceramic Sealers | Dr. Mostafa Anwar скачать в хорошем качестве

Single cone obturation & Bioceramic Sealers | Dr. Mostafa Anwar 3 года назад

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Single cone obturation & Bioceramic Sealers | Dr. Mostafa Anwar

Bioceramics are materials which include Alumina, Zirconia, Bioactive glass, Glass ceramics, Hydroxyapatite, resorbable Calcium phosphates. Used in dentistry for Filling up bony defects Root repair materials Apical fill materials Aids in regeneration etc. Bioinert: non-interactive with biological systems (Alumina, zirconia) Bioactive: durable tissues that can undergo interfacial interactions with surrounding tissue (bioactive glasses, bioactive glass ceramics, hydroxyapatite, calcium silicates) Biodegradable: soluble or resorbable, eventually replaced or incorporated into tissue (Tricalcium phosphate, Bioactive glasses). for more :    • How to Apply BioCeramic Sealer Easily duri...   ---------------------------------------------------------------------------- video content: 1- single cone obturation technique 00:00 2- what is bioceramic sealers ? 00:50 3- advantages of bioceramic sealers 02:10 4- Bonding of bioceramic sealers 03:12 5- characteristics of bioceramic sealers 05:35 6- examples of bioceramic sealers 07:33 ---------------------------------------------------------------------- Bioceramic-Based Root Canal Sealers The main functions of root canal sealers are to seal off the voids, form a bond between the core of the filling material and the root canal wall, and act as a lubricant. Sealers have been classified according to chemical composition as zinc oxide eugenol, calcium hydroxide, glass ionomer, silicone, resin, and bioceramic-based sealers. MTA-based sealers (Figs. 35.8A to F) MTA as sealer ProRoot Endo Sealer Fillapex CPM sealer MTA Obtura MTAS experimental sealer F-doped MTA cements. Properties Biocompatibility Bioceramic-based root canal sealers are biocompatible which is mainly due to the presence of calcium phosphate in the sealer. Flow Flow of a sealer allows it to fill canals, isthmus, accessory canals, and voids between the master and accessory cones. According to ISO 6786/2001, a root canal sealer should have a flow rate of not 20 mm. Bioceramic-based sealers meet the ISO requirements of flow. Retreatability Bioceramic sealers are difficult to remove from the root canals during retreatment and post-space preparation. Solubility iRoot SP and MTA-Fillapex are highly soluble and do not meet ANSI/ADA requirements. MTA-Angelus has low solubility which is consistent with ANSI/ADA requirements Radiopacity Bioceramic sealers are radiopaque due to presence of bismuth trioxide and barium sulfate. Antimicrobial Properties Bioceramic sealers are antimicrobial in nature due to their alkalinity and release of calcium ions which stimulates repair by the deposition of mineralized tissue. Adhesion Sealing ability of bioceramic-based sealers is because of following three mechanisms: 1. Diffusion of the sealer particles into the dentinal tubules and form mechanical interlocking bonds 2. Infiltration of sealer’s mineral content into intertubular dentin forming mineral infiltration zone, produced after denaturing the collagen fibers with a strong alkaline sealer 3. Reaction of phosphate with calcium silicate hydrogel and calcium hydroxide, produced by reaction of calcium silicates in the presence of dentin’s moisture, resulting in the formation of hydroxyapatite along the mineral infiltration zone. Conclusion When compared to conventional materials used in endodontic treatments, bioceramic cements are not only biocompatible but also bioactive as they proved to be involved in controlling the tissue healing and pulp regeneration. Seeing the advantages of bioceramics, recent studies favor bioceramic materials even if not many products are available for use. Being biocompatible and bioactive materials, these are used in root perforations, large apical foramens, and root resorptions. MTA or MTA-like cements have been used as materials of choice in regenerative endodontics, vital pulp therapy, and periradicular surgery due to their clinical success rate. Based on in-progress technology of fabrication, it is expected that the newer bioceramic cements will overcome drawbacks of previous ones, mainly the discoloration problem. With further research, bioceramics has the potential to become the preferred materials for the various endodontic procedures. Questions Write short notes on: MTA Advantages of bioceramics in endodontics Biodentine Bioceramic sealers Clinical applications of MTA

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