Evidence map›Paper›PMID 23786610›Full record

Trial reportOperative dentistry

Inactivation of matrix-bound matrix metalloproteinases by cross-linking agents in acid-etched dentin.

D L S Scheffel, J Hebling, R H Scheffel, K Agee, G Turco, C A de Souza Costa, D Pashley

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Operative dentistry. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
5.8field-weighted citation impact, top 3% of its field
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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

24 citing papers in PubMed, 78 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Proteolytic activity and degradation of bovine versus human dentin matrices.Journal of applied oral science : revista FOB · 2021
    Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Cross-linked dry bonding: A new etch-and-rinse technique.Dental materials : official publication of the Academy of Dental Materials · 2016
    Article
  15. On the stiffness of demineralized dentin matrices.Dental materials : official publication of the Academy of Dental Materials · 2016
    Article
  16. Article
  17. Article
  18. Water distribution in dentin matrices: bound vs. unbound water.Dental materials : official publication of the Academy of Dental Materials · 2015
    Article
  19. Article
  20. Article
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 at 5 institutions in 3 countries.

D L S Scheffel
J Hebling
R H Scheffel
K Agee
G Turco
C A de Souza Costa
D Pashley
Centro Universitário de Araraquara · BRAugusta University · USGeorgia Regents Medical Center · USUniversidade Estadual Paulista (Unesp) · BRUniversity of Trieste · IT

Funding

Reasons for poor durability of resin-dentin bondsR01DE015306 · NIDCR · MEDICAL COLLEGE OF GEORGIA (MCG) · PI PASHLEY, DAVID H · 2004 to 2013
$4.4M
NIDCR NIH HHS R01 DE015306
6 · The paper itself

Abstract

objectivesPublished transmission electron microscopy analysis of in vitro resin-dentin bonds shows that, after 44 months, almost 70% of collagen fibrils from the hybrid layer disappear. Matrix metalloproteinases (MMPs) play an important role in that process and are thought to be the main factor responsible for the solubilization of dentin collagen. Therefore, this study aimed to evaluate the inactivation of matrix-bound MMPs by two different cross-linking agents, carbodiimide (EDC) or proanthocyanidin (PA), or the MMP-inhibitor, chlorhexidine (CHX), on acid-etched dentin using a simplified MMP assay method. MATERIALS AND

methodsDentin beams (2×1×6 mm) were obtained from mid-coronal dentin of sound third molars and randomly divided into six groups (G) according to the dentin treatment: G1: Deionized water (control); G2: 0.1 M EDC; G3: 0.5 M EDC; G4: 0.5 M EDC + 35% hydroxyethyl methacrylate (HEMA); G5: 5% PA; and G6: 2% CHX. The beams were etched for 15 seconds with 37% phosphoric acid, rinsed, and then immersed for 60 seconds in one of the treatment solutions. The data were expressed both in absorbance values at 412 nm and in MMP-9 activity equivalents. The total MMP activity of dentin was analyzed for one hour by colorimetric assay (Sensolyte). Data were submitted to Wilcoxon nonparametric test and Mann-Whitney tests (p>0.05).

resultsAll experimental cross-linking solutions significantly reduced MMP activity from 79.8% to 95.2% when compared to the control group. No difference was observed among 0.1 M EDC (84.8%), 5% PA (87.6%), and 2% CHX (79.8%). Addition of 35% HEMA to 0.5 M EDC produced inactivation (95.2%) that was similar to that of 0.5 M EDC alone (92.7%).

conclusionDentin treatment with cross-linking agents is effective to significantly reduce MMP activity. Mixing 0.5 M EDC and 35% HEMA did not influence EDC inhibitor potential.

Indexed as

CarbodiimidesChlorhexidineCross-Linking ReagentsDental EtchingDentinHumansMatrix MetalloproteinasesMolar, ThirdProanthocyanidinsCarbodiimidesChlorhexidineCross-Linking ReagentsMatrix MetalloproteinasesproanthocyanidinProanthocyanidins

Identifiers

PMID23786610
PMCPMC3989999
OpenAlexW2055775316

What OpenQuestion holds

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Registered trials

None linked

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.