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Does malocclusion affect ingestion: a systematic review.

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Malocclusion negatively impacts oral ingestion, affecting chewing, biting, and swallowing. Orthodontic care should prioritize improving ingestion function for better nutritional status.

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Area of Science:

  • Dental Science
  • Nutrition Science
  • Public Health

Background:

  • Malocclusion, a complex dental condition, often has unexamined consequences on oral functions like ingestion.
  • The relationship between malocclusion severity and its impact on eating and swallowing is not well-documented.
  • Identifying individuals at risk for malocclusion-related ingestion issues requires effective screening tools.

Purpose of the Study:

  • To systematically review the existing literature on the association between malocclusion and oral ingestion.
  • To identify and compile diagnostic tools for screening individuals susceptible to malocclusion-induced ingestion disorders.

Main Methods:

  • A systematic literature review was conducted adhering to PRISMA-P 2015 guidelines.
  • The review protocol was registered with PROSPERO (CRD42023395840).
  • Bibliographic searches were performed across PubMed, Cochrane, and PROSPERO databases.

Main Results:

  • Twenty-nine articles (2007-2023) were included in the qualitative synthesis.
  • Twenty studies indicated a negative correlation between malocclusion severity and oral ingestion efficiency.
  • While an association exists, causality between malocclusion and ingestion impairments remains unclear due to study designs.

Conclusions:

  • Malocclusion significantly impairs oral ingestion functions, including chewing, biting, and swallowing.
  • Orthodontic evaluations should include assessments of ingestion disorders to address potential nutritional impacts.
  • Further research is warranted to quantify the effect of malocclusion on nutritional status.