title: Two-piece implants with turned versus microtextured collars.
abstract: Implant companies have been promoting two-piece implants with microtextured collars in the interest of hard tissue preservation and/or soft tissue integration. However, this rationale may not be justified. Based on comparative studies currently available, it is unclear whether microroughened implant necks reduce crestal bone loss. A possible effect may be overruled by the establishment of a biologic width or by other factors influencing crestal bone remodeling. In addition, the orientation and attachment of the collagen fibers in the peri-implant mucosa are a little different because the surface roughness varies at the level of the implant neck. The clinician should be cautious when using these modified implants because the impact of microtextured collars on the initiation and progression of peri-implant pathology is currently unknown.
authors.affiliation: Department of Periodontology, School of Dental Medicine, Free University of Brussels (VUB), Brussels, Belgium. jan.cosyn@vub.ac.be
authors.forename: Jan
authors.initials: J
authors.lastname: Cosyn
authors.forename: Mehran Moradi
authors.initials: MM
authors.lastname: Sabzevar
authors.forename: Peter
authors.initials: P
authors.lastname: De Wilde
authors.forename: Tim
authors.initials: T
authors.lastname: De Rouck
mesh_terms: D016723:Bone Remodeling; D000044:Dental Abutments; D015921:Dental Implants; D003773:Dental Plaque / Q000209:etiology; D017267:Dental Prosthesis Design / Q000009:adverse effects; D019094:Dental Prosthesis, Implant-Supported; D004846:Epithelial Attachment / Q000502:physiology; D006801:Humans; D010518:Periodontitis / Q000209:etiology; D013499:Surface Properties
chemical_list: D015921:Dental Implants