title: Maxillary complete denture outcome with two-implant supported mandibular overdentures. A systematic review.
abstract: OBJECTIVE
  Research data regarding maxillary complete denture outcome with two-implant supported mandibular overdentures are not consistent. Considering multiple publications on implant supported mandibular overdentures, it was decided to summarize currently present evidence on the maxillary complete dentures opposed by implant-supported mandibular overdentures, and analyze factors that could potentially influence the outcomes.
  
  
  METHODS
  The articles from 1985 to 2007 related to the topic were identified in the online MEDLINE/Pubmed and other databases and manually. Primary articles were scanned, and irrelevant studies were excluded from the further review process. Potentially relevant titles and abstracts were provisionally included for consideration on the basis of full text articles. Full text articles were obtained from on-line and printed sources. The data from the studies were extracted and reviewed.
  
  
  RESULTS
  The study has failed to identify any prospective satisfying inclusion/exclusion criteria RCT reporting on maxillary bone resorption. The number of maxillary complete denture relining incidences per patient was constantly increasing during the 10-year period. Maxillary complete denture remake incidences comprised 16-33 % of the number of patients followed during the 10-year period. Comparing patient satisfaction with upper dentures at the baseline and after two years, no decrease in satisfaction was noticed.
  
  
  CONCLUSIONS
  There is no evidence that maxillary ridge resorption is accelerated with certain types of two-implant supported mandibular overdenture attachments. Most common complication for the maxilla - prosthetic maintenance. There is a risk of decreased patient satisfaction with bar-supported mandibular overdenture. Further studies are needed to provide evidence for the maxillary complete denture outcome with two-implant supported mandibular overdentures.
authors.affiliation: Institute of Odontology, Faculty of Medicine, Vilnius University, Zalgirio str. 115, 08217 Vilnius, Lithuania. vygandasr@gmail.com
authors.forename: Vygandas
authors.initials: V
authors.lastname: Rutkunas
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Mizutani
authors.forename: Vytaute
authors.initials: V
authors.lastname: Peciuliene
authors.forename: Ruta
authors.initials: R
authors.lastname: Bendinskaite
authors.forename: Tomas
authors.initials: T
authors.lastname: Linkevicius
mesh_terms: D018849:Controlled Clinical Trials as Topic; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D003827:Denture, Complete, Upper; D003828:Denture, Overlay; D006801:Humans; D008334:Mandible / Q000601:surgery*; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants