title: An in-needle extraction technique in determination of organic compounds released from dental tissue conditioners incubated in artificial saliva.
abstract: The use of an in-needle technique for direct isolation of analytes from real liquid samples is a new proposal. The in-needle technique has been relatively seldom used for direct sampling of liquid matrix through the needle. In this work the in-needle technique has been applied for the determination of compounds evolved to artificial saliva from dental prosthetic materials. It has been shown that results from the experiment with in-needle device were at least comparable with those obtained with using well known solid phase extraction (SPE). It is worth to mention that in-needle extraction offers some advantages: lower consumption of solvent, shorter step-preparation time and reduced costs. The compounds released from prosthetic materials may affect the stability of tissue conditioners and limit their long-term use in the oral cavity. Examined soft dental materials have been found to be stable as minor amount of various species have been emitted from them. Results of the stability tests of soft dental materials with the use of in-needle device on sample preparation step enable their quick evaluation and estimations of their quality.
authors.affiliation: Poznań University of Technology, Institute of Chemical Technology and Engineering, M. Skłodowskiej-Curie 2, 60-965 Poznań, Poland. Electronic address: monikapietrzynska@gmail.com.
authors.forename: Monika
authors.initials: M
authors.lastname: Pietrzyńska
authors.affiliation: Poznan University of Medical Sciences, Department of Geriatric Dentistry, Bukowska 70, 60-812 Poznań, Poland.
authors.forename: Rafał
authors.initials: R
authors.lastname: Brożek
authors.affiliation: Poznań University of Technology, Institute of Chemical Technology and Engineering, M. Skłodowskiej-Curie 2, 60-965 Poznań, Poland.
authors.forename: Adam
authors.initials: A
authors.lastname: Voelkel
authors.affiliation: Poznan University of Medical Sciences, Department of Geriatric Dentistry, Bukowska 70, 60-812 Poznań, Poland.
authors.forename: Ryszard
authors.initials: R
authors.lastname: Koczorowski
mesh_terms: D000818:Animals; D003764:Dental Materials / Q000737:chemistry*; D005782:Gels / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D009339:Needles; D009930:Organic Chemicals / Q000737:chemistry*; D010968:Plasticizers / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D015203:Reproducibility of Results; D012464:Saliva, Artificial; D052616:Solid Phase Extraction; D012997:Solvents / Q000737:chemistry
chemical_list: D003764:Dental Materials; D005782:Gels; D009930:Organic Chemicals; D010968:Plasticizers; D011109:Polymethacrylic Acids; D012464:Saliva, Artificial; D012997:Solvents; C540406:softone
keywords: Dental tissue conditioners; In-needle extraction; Liquid samples; Solid phase extraction