title: Prosthetic treatment time and satisfaction of edentulous patients treated with conventional or implant-supported complete mandibular dentures: a case-control study (part 1).
abstract: OBJECTIVE
  The aim of this study was to compare prospective treatment with implant-retained mandibular overdentures (IROs) versus conventional complete dentures (CDs). This paper reports on the study design and 1-year outcomes. Part 2 in this series will report the 7-year outcomes.
  
  
  METHODS
  Sixty edentulous patients with severely resorbed mandibles, already using a conventional CD, participated. Thirty patients received an IRO and 30 received a conventional CD. The patients were retrospectively matched for age, gender, and social class. The length of each treatment session was recorded. Both groups provided a subjective assessment of their current dentures, and satisfaction with their new dentures was evaluated using questionnaires focusing on denture-related complaints and a general satisfaction scale.
  
  
  RESULTS
  Patients with IROs were more satisfied with the performance of their dentures than those using conventional CDs, especially with regard to subjective fit, looseness, and quality of chewing; however, more clinical treatment was required. The mean time taken by the prosthodontist to construct CDs was 268 minutes, compared to 327 minutes for IROs, to the time of the second review appointment after insertion.
  
  
  CONCLUSIONS
  Mandibular IROs provided enhanced performance but required more clinical resources.
authors.affiliation: Division of Restorative Dental Sciences, UCL Eastman Dental Institute for Oral Health Care Sciences, University College, University of London, UK. J.Hobkirk@eastman.ucl.ac.uk
authors.forename: John A
authors.initials: JA
authors.lastname: Hobkirk
authors.forename: Hind H
authors.initials: HH
authors.lastname: Abdel-Latif
authors.forename: Julie
authors.initials: J
authors.lastname: Howlett
authors.forename: Richard
authors.initials: R
authors.lastname: Welfare
authors.forename: David R
authors.initials: DR
authors.lastname: Moles
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D019094:Dental Prosthesis, Implant-Supported / Q000523:psychology*; D019232:Dental Restoration Failure; D003826:Denture, Complete, Lower / Q000523:psychology*; D017050:Episode of Care; D005260:Female; D006295:Health Resources; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011446:Prospective Studies; D012923:Social Class; D011795:Surveys and Questionnaires; D013997:Time Factors