Plasma-sprayed coatings and hard-tissue compatibility : a comparative study on fluorapatite, magnesiumwhitlockite and hydroxylapatite / Walfridus Johannes Augustinus DhertEffects of dental implants on hard and soft tissues / Nynke TymstraEffects of dental implants on hard and soft tissues / Nynke TymstraComposite materials for hard tissue replacement / [by] Bohumil Václav Rejda