title: Implant retention and support for distal extension partial removable dental prostheses: satisfaction outcomes.
abstract: BACKGROUND
  The rotational movements of the distal extension denture base of partial removable dental prostheses frequently harm the prosthesis stability, leading to discomfort during function.
  
  
  OBJECTIVE
  This study evaluated the use of distal implants to retain and support partial removable dental prostheses and assessed the outcomes with respect to specific aspects of patient satisfaction.
  
  
  METHODS
  Twelve participants (mean age, 62.6 ± 7.8 years) received new conventional mandibular partial removable dental prostheses and complete maxillary dentures. After 2 months of conventional prosthesis use, the participants completed a questionnaire assessing their satisfaction. Implants were then inserted bilaterally in the mandibular posterior region and, after 4 months, ball attachments were placed on the implants and on the partial removable dental prosthesis acrylic resin base. The implants and remaining teeth were followed up with clinical and image examinations. After 2 months, satisfaction was reevaluated, and the data were analyzed by the paired Student t test and the Bonferroni correction (α=.05).
  
  
  RESULTS
  Clinical evaluation found stable periodontal conditions around the implants, no intrusions or mobility of teeth, and no radiographic changes in bone level. Participants reported significant improvements (P<.05) in retention, comfort, masticatory capacity, and speaking ability after implant placement.
  
  
  CONCLUSIONS
  Implant-retained and -supported removable prostheses improve retention and stability, minimize rotational movements, and significantly increase participant satisfaction.
authors: Graduate student, Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.
authors: Thais Marques Simek Vega
authors: TM
authors: Gonçalves
authors: Graduate student, Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.
authors: Camila Heitor
authors: CH
authors: Campos
authors: Professor, Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil. Electronic address: regarcia@fop.unicamp.br.
authors: Renata Cunha Matheus Rodrigues
authors: RC
authors: Garcia
mesh_terms: D000368:Aged; D016734:Dental Clasps; D015921:Dental Implants; D003774:Dental Plaque Index; D019094:Dental Prosthesis, Implant-Supported; D003779:Denture Design; D003781:Denture Retention / Q000295:instrumentation*; D003827:Denture, Complete, Upper; D003832:Denture, Partial, Removable; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008334:Mandible / Q000601:surgery; D008409:Mastication / Q000502:physiology; D008875:Middle Aged; D017060:Patient Satisfaction; D010512:Periodontal Index; D012399:Rotation; D013060:Speech / Q000502:physiology; D016896:Treatment Outcome; D064232:Visual Analog Scale
chemical_list: D015921:Dental Implants