Abstract
Statement of problem
Prosthetic rehabilitation, especially with removable complete dentures (CDs), can
contribute to speech problems, although the prevalence of the problem is unclear.
Purpose
The purpose of this systematic review was to examine the influence of implant-supported
fixed complete dentures (FCDs), implant-supported overdentures, and removable CDs
on speech articulation disorders in patients with at least 1 completely edentulous
jaw.
Material and methods
This study was prepared according to the Preferred Reporting Items for Systematic
Reviews and Meta-Analyses (PRISMA) guidelines and registered in the International
Prospective Register of Systematic Reviews (CRD42020182705). The PubMed/Medline, Embase,
Web of Science, Scopus, Latin American and Caribbean Health Sciences, Brazilian Clinical
Trials Registry, and Cochrane Library databases were searched through April 2020 to
identify clinical trials comparing maxillary and/or mandibular implant-supported dentures
with removable CD use in terms of speech articulation in participants with at least
1 completely edentulous jaw. The risk of bias of selected studies was assessed with
the Joanna Briggs Institute critical appraisal tools, and the quality of evidence
was tested by using the Grading of Recommendations Assessment, Development and Evaluation
(GRADE) approach.
Results
Initially, 2586 articles were identified, and their titles and abstracts were read.
Sixteen articles were read in full, and 8 studies (4 paired clinical trials and 4
cross-sectional studies) were included in this review. In total, 290 prosthesis users
aged 29 to 90 years, approximately 44 of whom had hearing difficulties, were included.
Four studies had a low risk of bias, and 4 studies had a high risk of bias. Distortions
of the /s/ phoneme were observed more often in the first 6 months of maxillary FCD
use than with removable CD use. Speech articulation did not differ between mandibular
FCD and removable CD users. The quality of evidence for speech articulation disorders
was low.
Conclusions
Given the low quality of evidence on speech articulation disorders, further research
on speech articulation disorders in prosthesis wearers is needed.
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Article info
Publication history
Published online: April 14, 2021
Footnotes
Supported by São Paulo Research Foundation - Brazil (FAPESP), [grant number 2018/23013-4].
Identification
Copyright
© 2021 by the Editorial Council for the Journal of Prosthetic Dentistry.
