Publications by authors named "P M Michailesco"
Antimicrobial activity and tightness of a DCPD-CaO-based hydraulic calcium phosphate cement for root canal filling.
J Biomed Mater Res B Appl Biomater
August 2005
Calcium hydroxide is currently used in dentistry for endodontic treatments where its main advantage is its antibacterial and anti-inflammatory activity. However, it also has some drawbacks such as pulp necrosis, slight solubility, slow and insufficient hardening, and retraction on drying. In consequence, it is used only as temporary material for root canal disinfection.
View Article and Find Full Text PDFStudy of a hydraulic calcium phosphate cement for dental applications.
J Mater Sci Mater Med
January 2002
Article Synopsis
- Calcium phosphate-based cements (CPCs) are gaining attention for bone reconstruction due to their excellent ability to support bone growth, with variations in composition affecting their mechanical properties and setting times.
- Different calcium-to-phosphate (Ca/P) and liquid-to-powder (L/P) ratios were tested, showing optimal mechanical strength at specific ratios and conditions, with the setting expansion and temperature being influenced by these ratios.
- While the cements demonstrated antibacterial activity particularly at higher Ca/P ratios, their short setting time makes them unsuitable for certain dental applications like root canal filling, although they may be suitable for pulp capping and cavity lining.
Article Synopsis
- Endodontic therapy aims to seal the root canal system effectively, and microleakage is tested using in vitro methods to gauge the quality of this seal.
- The study compared the penetration of calibrated microspheres and bacterial strains in teeth filled with different techniques, revealing that smaller tracers (like bacteria) penetrate better than larger ones.
- Results showed that filling techniques affect hermeticity, with compressive techniques being more effective than noncompressive ones in preventing leakage, and diffusion being the main factor influencing tracer movement over time.
Article Synopsis
- Calcium hydroxide is widely used in dentistry for endodontic treatment due to its antibacterial and anti-inflammatory properties, but it has drawbacks like pulp necrosis and slow hardening.
- Recent studies have shown that calcium phosphate-based cements (CPC) made from calcium bis-dihydrogenphosphate and calcium oxide offer improved mechanical properties and osteoconductivity, making them more suitable for dental use.
- Tests indicated that these new CPCs exhibit significant bacterial growth inhibition against common oral pathogens, positioning them as promising materials for pulp capping and cavity lining applications.
Objectives: The aim of this study was to evaluate the socio-economic status of French undergraduate dental students.
Methods: A 46-item questionnaire was completed by the dental students of six universities between 1992 and 1995. Subjects related to family background, housing, schooling, income, expenditure and participation in student life were investigated.