Evidence map›Paper›PMID 34901541›Full record

ArticleBioactive materials2022

Effect of minor amounts of β-calcium pyrophosphate and hydroxyapatite on the physico-chemical properties and osteoclastic resorption of β-tricalcium phosphate cylinders.

B Le Gars Santoni, L Niggli, S Dolder, O Loeffel, G A Sblendorio, R Heuberger, Y Maazouz, C Stähli, N Döbelin, P Bowen and 2 more

Open access · goldAbstract read
In one paragraph

Article in Bioactive materials, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.1field-weighted citation impact, top 25% 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

10 citing papers in PubMed, 21 citations in OpenAlex.

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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

12 authors at 3 institutions in 1 country.

B Le Gars SantoniRMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland.
L NiggliRMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland.
S DolderUniversity of Bern, Department for BioMedical Research (DBMR), Murtenstrasse 35, CH-3008, Bern, Switzerland.
O LoeffelRMS Foundation, Materials Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland.
G A SblendorioEPFL, Ecole Polytechnique Fédérale de Lausanne, Construction Materials Laboratory, Station 12, CH-1015, Lausanne, Switzerland.
R HeubergerRMS Foundation, Materials Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland.
Y MaazouzRMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland.
C StähliRMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland.
N DöbelinRMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland.
P BowenEPFL, Ecole Polytechnique Fédérale de Lausanne, Construction Materials Laboratory, Station 12, CH-1015, Lausanne, Switzerland.
W HofstetterUniversity of Bern, Department for BioMedical Research (DBMR), Murtenstrasse 35, CH-3008, Bern, Switzerland.
M BohnerRMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland.
RMS Foundation · CHÉcole Polytechnique Fédérale de Lausanne · CHUniversity of Bern · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

β-Tricalcium Phosphate (β-TCP), one of the most used bone graft substitutes, may contain up to 5 wt% foreign phase according to standards. Typical foreign phases include β-calcium pyrophosphate (β-CPP) and hydroxyapatite (HA). Currently, the effect of small amounts of impurities on β-TCP resorption is unknown. This is surprising since pyrophosphate is a very potent osteoclast inhibitor. The main aim of this study was to assess the effect of small β-CPP fractions (<1 wt%) on the in vitro osteoclastic resorption of β-TCP. A minor aim was to examine the effect of β-CPP and HA impurities on the physico-chemical properties of β-TCP powders and sintered cylinders. Twenty-six batches of β-TCP powder were produced with a Ca/P molar ratio varying between 1.440 and 1.550. Fifteen were further processed to obtain dense and polished β-TCP cylinders. Finally, six of them, with a Ca/P molar ratio varying between 1.496 (1 wt% β-CPP) and 1.502 (1 wt% HA), were incubated in the presence of osteoclasts. Resorption was quantified by white-light interferometry. Osteoclastic resorption was significantly inhibited by β-CPP fraction in a linear manner. The presence of 1% β-CPP reduced β-TCP resorption by 40%, which underlines the importance of controlling β-CPP content when assessing β-TCP biological performance.

Indexed as

BioceramicsCalcium phosphateHydroxyapatiteOsteoclastic resorptionβ‐Calcium pyrophosphateβ‐Tricalcium phosphate

Identifiers

PMID34901541
PMCPMC8636826
OpenAlexW3204000054

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.