title: Single implant supported mandibular overdenture: A literature review.
abstract: OBJECTIVE
  Rehabilitation of the edentulous mandible by implant-supported prosthesis is a successful and satisfying treatment as suggested by many clinical trials. However, the minimum number of implants required for this restoration is debatable. Single implant retained overdenture (SIROD) has gained popularity as a simple protocol. The purpose of this review is to systematically analyze the literature on SIROD.
  
  
  METHODS
  An electronic search was done in the PubMed and Medline databases using the key words "central single implant overdenture," "implant overdenture retained by one implant," "implant overdenture retained by single implant," "mandibular single implant overdenture," "mandibular SIRODs." Articles from 1993 to November 2012 were included in the review. Out of 208 articles, only 18 had relevant data pertaining to mandibular single implant overdenture. Two more were hand-picked from journals that are non-PubMed indexed but from reputed publishing houses.
  
  
  RESULTS
  Majority of studies supported the concept of SIROD. Success outcome was addressed in relation to surgical, prosthetic, functional parameters, and patient satisfaction. 65% studies evaluated the primary stabilities of the placed implants, 50% of studies assessed the marginal bone loss quarterly across a 1-year period. Prosthesis outcome was a criterion for evaluation of success rate in 45% of studies.
  
  
  CONCLUSIONS
  The SIROD is proved to be successful and an economic treatment protocol. However, the clinical parameters such as masticatory efficiency bite force, retention, and stability needs to be investigated.
authors.affiliation: Department of Prosthodontics, HKES's SN Institute of Dental Sciences and Research, Gulbarga, Karnataka, India.
authors.forename: Sudhindra
authors.initials: S
authors.lastname: Mahoorkar
authors.affiliation: Department of Prosthodontics, Sharavathi College of Dental Sciences and Hospital, Shimoga, Karnataka, India.
authors.forename: Srinidhi
authors.initials: S
authors.lastname: Bhat
authors.affiliation: Department of Prosthodontics, HKES's SN Institute of Dental Sciences and Research, Gulbarga, Karnataka, India.
authors.forename: Radhika
authors.initials: R
authors.lastname: Kant
keywords: Central implant; dental implants; mandibular overdenture; one implant overdenture; single implant overdenture; symphyseal implant