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BMC Oral Health
Published in: BMC Oral Health 1/2012

Open Access 01-12-2012 | Research article

A systematic review of methods to diagnose oral dryness and salivary gland function

Authors: Christina Diogo Löfgren, Claes Wickström, Mikael Sonesson, Pablo Tapia Lagunas, Cecilia Christersson

Published in: BMC Oral Health | Issue 1/2012

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Abstract

Background

The most advocated clinical method for diagnosing salivary dysfunction is to quantitate unstimulated and stimulated whole saliva (sialometry). Since there is an expected and wide variation in salivary flow rates among individuals, the assessment of dysfunction can be difficult. The aim of this systematic review is to evaluate the quality of the evidence for the efficacy of diagnostic methods used to identify oral dryness.

Methods

A literature search, with specific indexing terms and a hand search, was conducted for publications that described a method to diagnose oral dryness. The electronic databases of PubMed, Cochrane Library, and Web of Science were used as data sources. Four reviewers selected publications on the basis of predetermined inclusion and exclusion criteria. Data were extracted from the selected publications using a protocol. Original studies were interpreted with the aid of Quality Assessment of Diagnostic Accuracy Studies (QUADAS) tool.

Results

The database searches resulted in 224 titles and abstracts. Of these abstracts, 80 publications were judged to meet the inclusion criteria and read in full. A total of 18 original studies were judged relevant and interpreted for this review. In all studies, the results of the test method were compared to those of a reference method.
Based on the interpretation (with the aid of the QUADAS tool) it can be reported that the patient selection criteria were not clearly described and the test or reference methods were not described in sufficient detail for it to be reproduced. None of the included studies reported information on uninterpretable/intermediate results nor data on observer or instrument variation. Seven of the studies presented their results as a percentage of correct diagnoses.

Conclusions

The evidence for the efficacy of clinical methods to assess oral dryness is sparse and it can be stated that improved standards for the reporting of diagnostic accuracy are needed in order to assure the methodological quality of studies. There is need for effective diagnostic criteria and functional tests in order to detect those individuals with oral dryness who may require oral treatment, such as alleviation of discomfort and/or prevention of diseases.
Appendix
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Metadata
Title
A systematic review of methods to diagnose oral dryness and salivary gland function
Authors
Christina Diogo Löfgren
Claes Wickström
Mikael Sonesson
Pablo Tapia Lagunas
Cecilia Christersson
Publication date
01-12-2012
Publisher
BioMed Central
Published in
BMC Oral Health / Issue 1/2012
Electronic ISSN: 1472-6831
DOI
https://doi.org/10.1186/1472-6831-12-29

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