title: Apical microleakage of root-end cavities prepared by Er, Cr: YSGG laser.
abstract: The aim of this study is to assess the apical microleakage of the composite filled root-end cavities prepared by an Erbium, Chromium: Yttrium-Scandium-Gallium-Garnet laser. Fifty-five maxillary incisor teeth were enlarged and filled. Following the apical resection, root-end cavities were prepared using conventional methods: either using a bur (n = 30) or an ultrasonic retrotip (n = 15). Root-end cavities of the 15 teeth in the bur group were finished with the laser at 3.5 W. All root-end cavities were filled using two-step self-etching primer and composite resin. After 4 months of storage, apical microleakage was measured by a fluid filtration method. Microleakage of composite filled root-end cavities that were prepared by Er, Cr: YSGG was significantly larger than those made by conventional methods (p < 0.05). In conclusion, using the Er, Cr: YSGG laser has no advantages over conventional root-end cavity preparation methods when a composite filling material is used to seal root-end cavities.
authors.affiliation: Department of Restorative Dentistry & Endodontics, Ege University, 009035100 Bornova, Izmir, Turkey. kcaliskan1@yahoo.com
authors.forename: Mehmet Kemal
authors.initials: MK
authors.lastname: Calişkan
authors.forename: Nilay Kara
authors.initials: NK
authors.lastname: Parlar
authors.forename: Hasan
authors.initials: H
authors.lastname: Oruçoğlu
authors.forename: Berdan
authors.initials: B
authors.lastname: Aydin
mesh_terms: D003188:Composite Resins; D003737:Dental Cavity Preparation / Q000009:adverse effects / Q000379:methods*; D003804:Dentin / Q000601:surgery / Q000648:ultrastructure; D006801:Humans; D066298:In Vitro Techniques; D053844:Lasers, Solid-State / Q000009:adverse effects / Q000627:therapeutic use*; D008855:Microscopy, Electron, Scanning; D010865:Pilot Projects; D014092:Tooth Root / Q000601:surgery / Q000648:ultrastructure
chemical_list: D003188:Composite Resins