AIM To evaluate the physical and mechanical properties of two cements with a similar chemical composition to mineral trioxide aggregate and to attempt to improve their properties by producing a composite material. METHODOLOGY Two cement types were used: a mixture of calcium sulpho-aluminate cement and Portland cement (CSA) and calcium fluoro-aluminate cement (CFA) in conjunction with an admix...

Calcium phosphate bone cements are useful in orthopedics and traumatology, their main advantages being their biocompatibility and bioactivity, which render bone tissue osteoconductive, providing in situ hardening and easy handling. However, their low mechanical strength, which, in the best of cases, is equal to the trabecular bone, and their very low toughness are disadvantages. Calcium phospha...

BACKGROUND Although, mineral trioxide aggregate (MTA) and new experimental cement (CEM) are good root filling cements, but had no or low antimicrobial activities. The aim of this study was to evaluate the effects of addition of silver nanoparticles (SNP) to these two cements on antimicrobial effects against five most dental infection related microorganisms. MATERIAL AND METHODS Two suspension...

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...

STATEMENT OF PROBLEM Previous studies have shown discoloration of mineral trioxide aggregate (MTA) in contact with root canal irrigation solutions. However, there are limited data on colour stability of other calcium silicate-based materials (CSMs). OBJECTIVES This in vitro study aimed to evaluate the colour stability of three CSMs in contact with different irrigation solutions. MATERIALS A...

Commonly used implants for therapeutic approaches of non-systemically impaired bone do not sufficiently support the healing process of osteoporotic bone. Since strontium (II) has been proven as an effective anti-osteoporotic drug new types of strontium enriched calcium phosphate bone cements were developed. As osteoporosis is characterized by an imbalance of osteoblast and osteoclast activity t...

INTRODUCTION The aim of this randomized clinical trial split-mouth study was to compare the postoperative pain following use of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement as pulpotomy agents in carious primary molars. METHODS AND MATERIALS Forty-seven children aged between 6-10 years old were enrolled in this study. Each child had two cariously involved primary...

Coronal discoloration of endodontically treated teeth is a challenge in clinical dentistry. This study aimed to compare coronal induced by White Mineral Trioxide Aggregate and Calcium-enriched mixture cement. Fifty single-rooted, unrestored premolar extracted for orthodontic reasons were selected. After access cavity preparation, all the root canals instrumented with MTWO rotary files up #40.6%...

autogenous tooth transplantation (att) can be considered when there is a hopeless molar tooth and suitable donor present. this report presents an unconventional case of successful att of a third molar replacing the adjacent fractured second molar in a 33 year old woman. this wisdom tooth had completely developed roots. root-end filling with calcium enriched mixture (cem) cement was performed in...

This study deals with the effect of gelatin on physical and mechanical properties of  calcium phosphate bone cements. The mixture of tetracalcium phosphate (TTCP) and dicalcium phosphate (DCPA) as the cement powder was mixed with 6 wt% Na2HPO4 solution containing different amount (0, 2, 5 and 8% in w/w) of foamed gelatin as liquid phase. The physical properties were determined in the terms of s...