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Supplementary Material The Open Dentistry Journal, 2015, Volume 9 i
________________________________________________________________________________
Supplementary Material
Failure Rate of Direct High-Viscosity Glass-Ionomer versus Hybrid
Composite Resin Restorations in Posterior Permanent Teeth - A
Systematic Review
Steffen Mickenautsch* and Veerasamy Yengopal
*SYSTEM Initiative / Department of Community Dentistry, Faculty of Health Sciences, University of the Witwatersrand, 7 York Rd.,
Parktown/Johannesburg 2193, South Africa
Additional file S1 – 1. Systematic literature search
1. Search strategy: electronic database search: Composite versus amalgam
Search term number
Electronic database
Number of Citations
found
BMC search strategy: 02.12.2013
Online: http://www.biomedcentral.com/search/
[1]
amalgam AND composite
37
Articles included
0
CENTRAL search strategy: 02.12.2013
Online: http://www.thecochranelibrary.com/view/0/index.html
[1]
amalgam AND composite / Limit set: “Trials” , “Cochrane reviews”
188
Articles included
15
DOAJ search strategy: 02.12.2013
Online: http://www.doaj.org
[1]
amalgam AND composite
37
Articles included
0
GoogleScholar search strategy: 02.12.2013
Online: http://scholar.google.co.za/
[1]
[2]
[3]
[4]
[a]
[b]
[c]
amalgam AND composite
amalgam AND composite AND randomised control trial
amalgam AND composite AND randomised control trial AND longevity
amalgam AND composite AND randomised control trial AND longevity AND
restoration
Custom range 2006 – 2013
[4a] + NOT review
[4b] + NOT book
About 37,300 results
About 2,620 results
About 999 results
About 718 results
About 560 results
About 523 results
About 268 results
Articles included
0
IndMed search strategy: 02.12.2013
Online: http://indmed.nic.in/
[1]
amalgam AND composite
8
Articles included
0
OpenSIGLE search strategy: 02.12.2013
Online: http://opensigle.inist.fr/
[1]
amalgam AND composite
1
Articles included
0
PubMed search strategy: 02.12.2013
Online: http://www.pubmed.org
[1]
[2]
[a]
("Dental Amalgam"[Mesh]) AND "Composite Resins"[Mesh]
(("Dental Amalgam"[Mesh]) AND "Composite Resins"[Mesh]) AND "Dental
Restoration, Permanent"[Mesh]
Limit set: “Clinical trial”
1518
1209
119
Articles included
15
SABINET search strategy: 02.12.13
Online: http://www.sabinet.co.za/
[1]
[2]
amalgam AND composite
amalgam AND composite restorations
540
137
Articles included
0
Hand-search (Internet):
1
Reference check of included trial reports:
15
Total articles/documents included:
46
The highest search term number in brackets [] indicates utilized final search term for literature search.
Duplications of found citations are excluded.
Open Access
2. Search strategy: electronic database search: HVGIC versus amalgam
Search term number
Electronic database
Number of
Citations found
BMC search strategy: 02.12.2013 / Setting: between 2012 - 2013
Online: http://www.biomedcentral.com/search/
[1]
atraumatic restorative treatment
8
Articles included
0
CENTRAL search strategy: 02.12.2013 / Setting: between 2012 – 2013/Cochrane reviews, Trials
Online: http://www.thecochranelibrary.com/view/0/index.html
#1 ART
#2 amalgam
#3 (#1 AND #2)
#4 in Trials
#5 in Trials (2012 – 2013)
#1 atraumatic restorative treatment
#2 in Trials
#3 in Trials (2012 – 2013)
131
8
0
0
0
70
69
3
Articles included
0
DOAJ search strategy: 02.12.2013 / Setting: From 2012 -2013
Online: http://www.doaj.org
[1]
atraumatic restorative treatment
7
Articles included
0
GoogleScholar search strategy: 02.12.2013 / Custom range: 2012 – 2013
Online: http://scholar.google.co.za/
[1]
“atraumatic restorative treatment” AND amalgam
About 142 results
Articles included
0
IndMed search strategy: 02.12.2013
Online: http://indmed.nic.in/
[1]
[2]
ART
atraumatic restorative treatment
246
0
Articles included
0
OpenSIGLE search strategy: 02.12.2013
Online: http://opensigle.inist.fr/
[1]
ART approach
98
Articles included
0
PubMed search strategy: 07.01.2012 – 02.12.2013
Online: http://www.pubmed.org
[1]
atraumatic restorative treatment
44
Articles included
1
SABINET search strategy: 02.12.2013
Online: http://www.sabinet.co.za/
[1]
atraumatic restorative treatment
23
Articles included
0
Hand-search (Internet):
6
Reference check of included trial reports:
0
Total articles/documents included:
7
The highest search term number in brackets [] indicates utilized final search term for literature search.
Duplications of found citations are excluded.
LL The Open Dentistry Journal, 2015, Volume 9 Mickenautsch and Yengopal
Supplementary Material The Open Dentistry Journal, 2015, Volume 9 iii
3. Search strategy: electronic database search: HVGIC versus Composite resin
Search term number
Electronic database
Number of Citations
found
BMC search strategy: 02.12.2013
Online: http://www.biomedcentral.com/search/
[1]
glass ionomer AND composite (All words) in All fields (full text)
25
Articles included
0
CENTRAL search strategy: 02.12.2013
Online: http://www.thecochranelibrary.com/view/0/index.html
[1]
glass ionomer AND composite (Section: Trials)
400
Articles included
0
DOAJ search strategy: 02.12.2013
Online: http://www.doaj.org
[1]
glass ionomer AND composite
106
Articles included
0
GoogleScholar search strategy: 02.12.2013
Online: http://scholar.google.co.za/
[1]
[a]
[2]
“glass ionomer” AND composite
Custom range setting: 1994 – 2013
[1]-[a] AND "direct posterior restoration"
About 19,000 results
About 15,400 results
About 6 results
Articles included
0
IndMed search strategy: 02.12.2013
Online: http://indmed.nic.in/
[1]
(glass ionomer) and (composite)
0
Articles included
0
OpenSIGLE search strategy: 02.12.2013
Online: http://opensigle.inist.fr/
[1]
glass ionomer AND composite
0
Articles included
0
PubMed search strategy: 02.12.2013
Online: http://www.pubmed.org
[1]-1
[1]-2
[1]-3
[1]-4
[1]-5
[1]-6
[1]-7
(("Glass Ionomer Cements"[Mesh]) AND "Composite Resins"[Mesh]) AND "Dental
Restoration, Permanent"[Mesh]
atraumatic restorative treatment
(("fuji IX" [Supplementary Concept]) OR "Fuji IX GP Fast" [Supplementary Concept])
AND "Composite Resins"[Mesh]
(((("ketac-molar" [Supplementary Concept]) OR "Ketac-Molar Quick" [Supplementary
Concept]) OR "Ketac-Molar Aplicap" [Supplementary Concept]) OR "Ketac Molar
Easymix" [Supplementary Concept]) AND "Composite Resins"[Mesh]
("ChemFlex" [Supplementary Concept]) AND "Composite Resins"[Mesh]
("Dental Restoration Failure"[Mesh]) AND "Glass Ionomer Cements"[Mesh]
(("Glass Ionomer Cements"[Mesh]) AND "Composite Resins"[Mesh])
Set limit: Clinical trial
1637
317
61
59
4
386
407
Articles included
0
SABINET search strategy: 02.12.2013
Online: http://www.sabinet.co.za/
[1]
glass ionomer AND composite
2
Articles included
0
Hand-search (Internet):
2
Reference check of included trial reports:
0
Total articles/documents included:
2
The highest search term number in brackets [] indicates utilized final search term for literature search.
Duplications of found citations are excluded.
Additional file S1 – 2. Internal validity criteria
1. Assessment criteria for selection bias risk
Criteria
Score
0
D
C
B
A
Adequate random sequence generation method reported1
N
Y
Y
Y
Y
Method of concealing the generated random sequence is reported that is
adequate to:
Prevent its direct observation2
N
N
Y
Y
Y
Prevent its correct prediction3
N
N
N
Y
Y
Evidence is given in some form of statistical test result that indicates the allocated random sequence was adhered to
throughout the trial4
N
N
N
N
Y
Conclusion
NA
A
A = Adequate randomisation; NA = Not adequate randomisation; N = Information not provided in the trial report; Y = Information provided in the
trial report.
1 The following methods are considered as inadequate: cluster randomisation, fixed block randomisation with block size 2, minimization, alternation,
randomisation of teeth, use of date of birth or patient record number, “quasi”-randomisation, split-mouth, generation of the random sequence before
patient recruitment.
2 Central randomisation or sequence allocation by other than the operator(s) who apply the allocated intervention and who informs the operator(s)
which (test- or control) intervention has been allocated to a particular patient only at moment of start of intervention (e.g. by phone), are considered to
be adequate.
3 Use of the Maximal randomisation procedure is considered to be adequate.
1-3 Fulfilment of these criteria indicates adequate attempt of effective randomisation but not that the attempt was indeed successful.
4 Any statistical test that includes the use of the Reverse Propensity Score (RPS) is considered to be adequate. Fulfilment of this criterion indicates
that the attempt of effective randomisation was indeed successful, i.e. sufficient proof of low selection bias risk.
.2. - Assessment criteria for detection- and performance bias risk
Criteria
Score
0
C
B
A
Adequate method of masking/blinding of patients and clinicians and evaluators reported1
N
Y
Y
Y
No reasons for doubt discerned from the report text that masking/blinding was not successful
N
N
Y
Y
Evidence is given in some form of applied test* result that shows the masking/blinding was successful throughout the
trial2
N
N
N
Y
Conclusion
NA
A
A = Adequate masking/blinding; NA = Not adequate masking/blinding; N = Information not provided in the trial report;
Y = Information provided in the trial report.
1 Fulfilment of this criterion indicates adequate attempt of effective masking/blinding of effective masking/blinding but not that the attempt was
indeed successful.
2 Fulfilment of this criterion indicates that the attempt of effective masking/blinding was indeed successful, i.e. proof of lack of detection/performance
bias
* E.g. Application of a questionnaire during the trial that assesses beliefs, as to which test- or control intervention was given/received to/by a
particular trial participant, followed by statistical comparison of the questionnaire results with the true allocation sequence. A non-significant result
(alpha set at 5%) should sufficiently indicate successful attempt of masking/blinding and subsequent low detection- and performance bias risk.
LY The Open Dentistry Journal, 2015, Volume 9 Mickenautsch and Yengopal