Tooth resorption is a common sequel which follows injuries or irritation to the periodontal ligament and/or tooth pulp. The course of tooth resorption involves an elaborate interaction among inflammatory cells, resorbing cells, and hard tissue structures. The key cells which are involved in resorption are multi-nucleated giant cells. Internal root resorptions are usually non-symptomatic and the...

BACKGROUND This study aimed to assess the push-out bond strength of mineral trioxide aggregate (MTA) to root canal dentin after irrigation with Smear Clear in comparison with 2.5% sodium hypochlorite (NaOCl), 2% chlorhexidine (CHX) and saline as commonly used root canal irrigants. MATERIAL AND METHODS The coronal and mid-root areas of maxillary anterior teeth were horizontally sectioned into ...

The setting time and mechanical properties of cements are a major technical concern for long in civil engineering. More recently those practical problems became biomedical applications -in bone surgery dentistry- particular concerning the which should be minimized. possibility to add organic additives interact with different constituting ions constitutes way modify kinetics. We made assumption ...

introduction: mineral trioxide aggregate is being widely used for root end filling, pulp capping, perforation repair, and other endodontic procedures. recently, a material similar to proroot mineral trioxide aggregate (pmta) was developed in iran named root mineral trioxide aggregate (rmta) with the claim of having the exact result of original mta. the purpose of this study was to compare the a...

i ntroduction: many of highly-alkaline dental materials have some adverse effects on physical properties of dentin. as basic substances, mineral trioxide aggregate (mta), calcium hydroxide (ch) and the new endodontic material, calcium-enriched mixture (cem) cement, may adversely affect dentin. the purpose of this in vitro study was to evaluate the effect of long-term application of cem cement, ...

background: introducing new endodontic cements should await comprehensive investigations and new formulations have to be tested in vivo before applying in human beings. so, the purpose of this study was to compare the biocompatibility of new endodontic cements, calcium aluminate α-aluminate cement (caac), calcium aluminate α-aluminate plus cement (caac plus), and a mixture of wollastonite and c...

This study evaluated the root-end sealing ability of mineral trioxide aggregate (MTA Angelus), reinforced zinc oxide-eugenol cement (Super EBA), resin-modified glass ionomer (Vitremer) and zinc-free amalgam (GS-80) (control). The root canals of eighty human lower molars were accessed, cleansed, shaped and obturated. Apexes were resected and cavities were prepared. Teeth were divided into 4 grou...

Objective:  To investigate the tissue response and biomineralization ability of CER prepared with epoxy resin or water compared to Mineral Trioxide Aggregate (MTA) .  Material Methods:  Polyethylene tubes containing materials empty for control were inserted into subcutaneous tissues 30 rats. After 7, 15, 30, 60, 90 days, rats killed removed analysis using hematoxylin-eosin staining, von Kossa u...