Evidence map›Paper›PMID 25820923›Full record

ArticleClinical oral investigations2015

Site-specific dental plaque pH in 13-year-old Thai schoolchildren.

S Piwat, H Hassan, T Kjeang, J Lindehag, H Wedin, R Teanpaisan, G Dahlén

Abstract read
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In one paragraph

Article in Clinical oral investigations, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

S PiwatDepartment of Stomatology, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkla, Thailand.
H HassanDepartment of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Box 450, 40530, Gothenburg, Sweden.
T KjeangDepartment of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Box 450, 40530, Gothenburg, Sweden.
J LindehagDepartment of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Box 450, 40530, Gothenburg, Sweden.
H WedinDepartment of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Box 450, 40530, Gothenburg, Sweden.
R TeanpaisanDepartment of Stomatology, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkla, Thailand.
G DahlénDepartment of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Box 450, 40530, Gothenburg, Sweden. dahlen@odontologi.gu.se.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe aim of this paper was to study pH conditions between dental sites, taking account the presence of caries, calculus, and microbial composition and alkali production. MATERIALS AND

methodsOne hundred 13-year-old Thai schoolchildren were recorded for caries experience (DMFT, DT), calculus, plaque, and gingivitis. Ex vivo urease activity was measured on 11, 26, 31, and 46 (distal aspect) with the rapid urease test and pH at baseline and after rinse with 0.25 % urea solution on mesial site in vivo. Interproximal plaque from contralateral teeth was microbiological analysed with the checkerboard technique.

resultsThirty-four children were caries free. Plaque and calculus were abundant; all children showed a high resting plaque pH and the mandibular incisor showed significantly (p < 0.01) higher pH at baseline, max pH and AOC7.0 after urea challenge, ex vivo urease activity and calculus but lower caries experience than other teeth. A significant inverse correlation (p < 0.02) was found between caries frequency and ex vivo urease activity for tooth 11. Anaerobes predominated over streptococci, but no significant differences between dental sites were found.

conclusionsThe study group had a high baseline plaque pH, in vivo and ex vivo urease activity, and calculus but low caries experience, which was best reflected in the lower incisor region. CLINICAL RELEVANCE: Urease activity and pH on site level may be important determinants for individuals at caries risk.

Indexed as

AdolescentDental CariesDental PlaqueDMF IndexFemaleGingivitisHumansHydrogen-Ion ConcentrationMaleThailandUreaseUreaseCalculusCariesDental plaqueOral microbiologypHUrease

Identifiers

PMID25820923

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.