title: Contemporary Root Canal Preparation: Innovations in Biomechanics.
abstract: Root canal preparation must serve the goals of supporting debridement while exerting the least amount of structural damage. Toward those goals, several recent trends for innovation are noted: some changes in instrument design, several of them substantial, whereas others are rather discrete. In vitro testing is ongoing and, because of the lack of consistent methodology, gives only some guidelines for clinical use. Lastly, clinical outcome data are lacking for many current instruments; therefore, it is not clear if improvements in flexibility and resistance to fatigue will translate to better outcomes.
authors.affiliation: Department of Endodontics, University of the Pacific Arthur A. Dugoni School of Dentistry, 155 5th Street, San Francisco, CA, USA. Electronic address: opeters@pacific.edu.
authors.forename: Ove Andreas
authors.initials: OA
authors.lastname: Peters
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Maria Guiomar
authors.initials: MG
authors.lastname: de Azevedo Bahia
authors.affiliation: Department of Dental Clinic, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil.
authors.forename: Erika Sales Joviano
authors.initials: ES
authors.lastname: Pereira
mesh_terms: D000497:Alloys; D001696:Biomechanical Phenomena; D004867:Equipment Design; D006801:Humans; D018915:Root Canal Preparation / Q000295:instrumentation* / Q000379:methods*
chemical_list: D000497:Alloys; C013616:nitinol
keywords: Corrosion; Cyclic fatigue; Glide path; Heat treatment; Nickel titanium; Outcomes