Selection patterns of dietary foods in edentulous participants rehabilitated with maxillary complete dentures opposed by mandibular implant-supported prostheses: a multicenter longitudinal assessment

J Prosthet Dent. 2013 Oct;110(4):252-8. doi: 10.1016/S0022-3913(13)60371-6.


Statement of problem: Documentation of long-term changes in food intake is lacking for those treated with a maxillary complete denture opposed by a mandibular, screw-retained, implant-supported fixed prosthesis.

Purpose: The purpose of this study was to evaluate the selection patterns of dietary foods over 5 years for edentulous participants treated in a multicenter prospective clinical trial that compared cast alloy versus laser-welded titanium frameworks of an implant-supported prostheses opposed by maxillary complete dentures to rehabilitate edentulous participants.

Material and methods: The study assessed data from a multicenter prospective clinical trial that followed edentulous participants from an initial baseline of wearing existing complete dentures to implant placement, restoration with a mandibular implant-supported prosthesis opposed by a maxillary complete denture, to follow-up assessment of these treatments over 5 years. The 32 participants in the cohort were treated at 5 of 9 participating centers. The data collected included 2 dietary forms, a standardized 4-day food diary form, and a dietary habits questionnaire. Each participant completed forms before entering into treatment (control) and at the 1- and 5-year follow-up assessment after being treated with a maxillary complete denture opposing a mandibular complete-arch fixed implant-supported prosthesis. Descriptive statistics were calculated for each measure at each assessment point. Regression analysis and the Sign test were used to calculate change in the participants' nutritional status (α=.05).

Results: Among the findings, it was noted that difficulty in masticating hard, raw, and fibrous foods decreased and intake of vegetable portions increased significantly from 2.5 to 3.3 servings. Participant comfort in eating in public places and their enjoyment of eating were significantly improved from 50% of participants being uncomfortable with their prior complete denture treatment to only 4% after 5 years.

Conclusions: Within the limitations of this study, it was concluded that vegetable intake and ability to masticate raw, hard, and fibrous food for these participants improved when they received a mandibular implant-supported prosthesis opposed by a maxillary complete denture. According to the analysis and findings, the overall eating experience was more pleasurable, and eating in public was more comfortable after replacement of complete dentures with a mandibular implant-supported prosthesis.

Publication types

  • Clinical Trial
  • Comparative Study
  • Multicenter Study

MeSH terms

  • Adult
  • Aged
  • Cohort Studies
  • Deglutition / physiology
  • Dental Alloys / chemistry
  • Dental Materials / chemistry
  • Dental Prosthesis, Implant-Supported* / psychology
  • Dental Soldering / methods
  • Denture, Complete, Lower* / psychology
  • Denture, Complete, Upper*
  • Eating / physiology
  • Eating / psychology
  • Feeding Behavior* / psychology
  • Female
  • Follow-Up Studies
  • Food Preferences* / psychology
  • Humans
  • Lasers
  • Longitudinal Studies
  • Male
  • Mastication / physiology
  • Middle Aged
  • Mouth, Edentulous / rehabilitation*
  • Patient Satisfaction
  • Prospective Studies
  • Taste / physiology
  • Titanium / chemistry
  • Vegetables


  • Dental Alloys
  • Dental Materials
  • Titanium