SEM Picture Book of Untreated & Treated Human Enamel & Dentin (eBook, ePUB)

High Resolution Scanning Electron Microscopic Pictures of Human Enamel & Dentin

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The book presents 573 scanning electron microscopic (SEM) pictures of differently designed, untreated and treated human tooth specimens of molars and incisors in magnifications of more than 50,000 times. The specimens were made from permanent sound, caries-free teeth that were extracted for orthodontic reasons. Sawing and fracture areas were prepared. Treatments were done with phosphoric acid, polyacrylic acid, EDTA, sodium hydroxide and phosphoric acid esters. Many unique pictures show the detailed structures of untreated and treated human enamel and dentin. This collection of SEM pictures mi...

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Ralf Janda was born in 1953 in Berlin. He obtained his Abitur (secondary school-leaving examination in 1973 and pursued chemistry at the Free University Berlin (FUB) from 1973 to 1978, thereby obtaining the degree Diploma-Chemist (summa cum laude). While working as a scientific assistant and researcher at the FUB he wrote his doctoral thesis and graduated in 1979 as a natural science doctor, Dr. rer. nat. (summa cum laude). His professional career as a scientific assistant and lecturer at the FUB came to an end in 1980. Ralf Janda also joined the dental industry in this year as head of research and development. He worked for many internationally leading dental companies (Kulzer GmbH, Germany, Degussa AG-Dental Division, today Degudent/Dentsply GmbH, Germany, Dentsply/Detech GmbH, Germany, Dentsply INC., USA, Dentaurum GmbH & Co. KG, Germany) in different leading positions as head of: R&D, production, quality assurance, dental technology, worldwide project leader until 2003. During this time, he was a member of many dental standard commissions, and from 1987 to 2000, he was also a member of the drug commission A at the drug institute of the Federal Republic of Germany. In 2003, he joined the cosmetic industry specialized on light-curing artificial nail products and stayed there until 2017. In addition to his professional pursuits, Ralf Janda has maintained a lengthy and extensive scientific career as a researcher and lecturer at numerous universities, beginning at the FUB in 1978. From 1988 to 1990, he was a lecturer at the Faculty of Material Sciences of the Technical University Berlin, where he taught resin composite materials. From 1991 to 1999, he worked as a researcher and lecturer for non-metallic dental materials at the dental department of the Medical Faculty of the Johann Wolfgang Goethe-University, Frankfurt/M. In 1992, he obtained his Habilitation (qualification for a teaching career at universities) and the degree Privatdozent (associate professor) in dental material science at the same university. From 1999 to 2004, Ralf Janda was Privatdozent at the Center of Dental Medicine of the Medical Faculty, Charité, Humboldt-University Berlin. From 2004 to 2021 he worked as a researcher and lecturer at the dental clinic of the Medical Faculty of the Heinrich Heine University, Düsseldorf. In 2006, he was appointed as apl. Professor (adjunct professor) in dental material science. Since 2021 he put his focus on writing textbooks about dental materials.