title: Screw spreading: technical considerations and case report.
abstract: The spreading system is an alternative technique to the Summers osteotome. The crest expansion technique is a less invasive procedure in which the facial wall expands after the medullary bone is compressed against the cortical wall. It improves the density of the maxillary bone, which allows for greater initial stability of implants. A specific screw instrument, the "spreader," achieved a controlled and standardized dilation of the bone horizontally. The use of spreaders to enhance the dental implant site is a highly predictable procedure.
authors.affiliation: Department of Dental Materials and Prosthodonctics, Dental School of São Jose dos Campos, São Paulo State University (UNESP), São Paulo, Brazil. anorikojima@hotmail.com
authors.forename: Renato Sussumu
authors.initials: RS
authors.lastname: Nishioka
authors.forename: Alberto Noriyuki
authors.initials: AN
authors.lastname: Kojima
mesh_terms: D000540:Alveolar Ridge Augmentation / Q000295:instrumentation / Q000379:methods; D015519:Bone Density / Q000502:physiology; D001863:Bone Screws; D003758:Dental Implantation, Endosseous / Q000295:instrumentation*; D015921:Dental Implants; D017268:Dental Prosthesis Retention; D004867:Equipment Design; D005260:Female; D006801:Humans; D008437:Maxilla / Q000601:surgery*; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000379:methods; D010027:Osteotomy / Q000295:instrumentation*
chemical_list: D015921:Dental Implants