Implant overdentures improve satisfaction, chewing and bite force, suggests review


Studies suggest that the use of implant overdentures (IODs) improved patient satisfaction and overall quality of life.

The aim of this review was to assess the impact of IODs on masticatory performance, bite force, patient’s satisfaction and nutritional state of patients


Searches were conducted in Medline, Embase and the Cochrane Central Register of Controlled Trials (CENTRAL) databases for prospective studies involving patients who received an implant-retained mandibular and/or maxillary IOD with a follow up of at least one year. Studies with less than 10 patients were excluded. Initial studies selection was by a single reviewer with full text analysis and risk of bias assessment being performed independently by two reviewers. Only English language studies were considered.


  • 53 studies were included in a narrative summary.
  • Most studies reported on mandibular overdentures, only 3 reporting on maxillary overdentures.
  • 5 out of 7 studies reporting on chewing ability reported an improvement.
  • All 4 studies reporting on bite forces found an improvement.
  • Implant-supported dentures were accompanied by high patient’s satisfaction with regard to denture comfort, but this high satisfaction was not always accompanied by improvement in general quality of life (QoL) and/or health-related QoL.
  • No changes were seen in dietary intake, BMI and blood markers.


The authors concluded

Treating complete denture wearers with implants to support their denture improves their chewing efficiency, increases maximum bite force, and it clearly improves satisfaction. The effect on QoL is uncertain. There is little research about maxillary overdentures, so the results of this systematic review are mainly related to mandibular IODs. Because the over- whelming amount of research done on mandibular overdentures with a follow-up of 1 year, future research should focus on long-term results and maxillary overdentures.


This review has included a large number of prospective studies and although the authors have indicated that they have been assessed for bias and quality that information is not provided in the main paper. The authors were not able to combine the data, so narrative summaries on the various outcome measures were reported. Simple counts of the number of studies supporting  positive outcomes were provided. It would appear the part of the challenge to providing qualitative summary arose because of the range of custom-made questionnaires developed to assess patient satisfaction. With increasing interest in patient-based outcomes developing consensus on common outcome reporting would assist systematic reviews and help develop a more robust evidence base.


Boven GC, Raghoebar GM, Vissink A, Meijer HJ. Improving masticatory performance, bite force, nutritional state and patient’s satisfaction with implant overdentures: a systematic review of the literature. J Oral Rehabil. 2014 Oct 13. doi: 10.1111/joor.12241. [Epub ahead of print] PubMed PMID: 25307515.

Dental Elf – 8th Dec 2011 – Implant supported lower dentures increased satisfaction and quality of life over conventional dentures

Dental Elf – 1st Feb 2012 – Implant overdentures do not have a more positive effect on the nutritional state of elderly at 12 months

Dental Elf – 19th Jul 2012  – Chewing ability and oral condition were the determinants of denture satisfaction best associated with oral health-related quality of life

Dental Elf – 4th Dec 2012 – Trail suggests no difference in food choices and nutrient intake in older adults with conventional denture or implant-retained overdentures

Dental Elf – 12th Nov 2013 – Trial shows that implant overdentures did not result in better dietary intake than conventional dentures at 12 months

Share on Facebook Tweet this on Twitter Share on LinkedIn Share on Google+