Facts About
Express
™
Penta Putty/
Ultra-Light Body
™
Vinyl Polysiloxane Precision Impression Materials
European
Field Evaluation Results
May – August 2004
Express Penta Putty/
Ultra
Ultra-Light
Light Body
™
™
Contents
1
2
3
Innovative VPS Impression Materials . . . . . . . . . . . . . . . . . . . . Page 5
1.1.
Express Penta Putty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
1.2.
Express Ultra-Light Body . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
In-Vitro Research . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
2.1.
Insertion Resistance of Putty Silicones . . . . . . . . . . . . . . Page 12
2.2.
Tensile Strength and Contact Angle of VPS. . . . . . . . . . . Page 17
European Field Evaluation – Results . . . . . . . . . . . . . . . . . . . . Page 21
3.1.
European Field Evaluation – Results . . . . . . . . . . . . . . . . Page 22
3.2.
Impression Techniques, Materials, Indications . . . . . . . . Page 23
3.3.
Assessment of the Tray Material . . . . . . . . . . . . . . . . . . . Page 24
3.4.
Assessment of the Light-bodied Wash Material. . . . . . . . Page 29
3.5.
Assessment of the Result Quality. . . . . . . . . . . . . . . . . . . Page 31
3.6.
Assessment of the Complete System . . . . . . . . . . . . . . . . Page 34
4
Testimonials by the Study Participants . . . . . . . . . . . . . . . . . . Page 39
5
Questions and Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 41
Express Penta Putty/
Ultra-Light Body
™
™
Introduction
It is a central aim of research and development at 3M ESPE to assist dentists
in every way – with materials tailored to the dental practice, simple handling
methods and a product range that takes into account of the fact that users’ preferences differ.
Twenty years ago, Express was already setting the standard for precision
impression taking in the dental practice with the world’s first automatically
mixable light-bodied wash material from a dispenser.
With Express Penta Putty, the researchers at 3M ESPE now present the first
genuine 3M ESPE VPS Putty Material specifically developed for automatic
handling in the Pentamix™ 2 Automatic Mixing Unit. The scientific and
technical challenge posed by this exciting project consisted of combining the
valued characteristics of the familiar malleable VPS with a completely new
type of handling.
The putty is complemented by Express Ultra-Light Body, whose innovative
formulation offers both excellent hydrophilisation and high tensile strength.
This is the major distinction between Express Ultra-Light Body and conventional VPS light-bodied wash materials.
This booklet focuses on the evaluation of a major user study, in which more
than 220 dentists in ten European countries participated. Express Penta Putty
and Express Ultra-Light Body provide the perfect combination of convenience
and precision impressions, thus generating a high level of acceptance amongst
practitioners, as the study results demonstrate.
The results of comparative in-vitro studies, which are also presented, are
relevant to daily dental practice. In addition, important questions on the method of use are answered. Detailed indexes enable the reader to use the booklet
as a practical reference work.
Kind regards
Dr. Joachim Zech
3
4
Express Penta Putty/
Ultra-Light Body
™
™
1
Innovative VPS
Impression Materials
5
Express Penta Putty/
Ultra-Light Body
™
™
1.1. Express™ Penta™ Putty
1 The putty material
Express Penta Putty is the first genuine 3M ESPE VPS Putty specially developed for automatic mixing in the Pentamix™ 2 Mixing Unit from 3M ESPE.
This innovative material is easy and clean to handle, permits dispensing of
exactly the quantity required and offers the user all the benefits of a conventional putty material.
Advantages of the material in use
• Quick, easy and clean to handle
• Homogeneous and void-free mixing at the press of a button
• Mixing quality reproducible every time
• Dispensing of exactly the quantity required
• Familiar putty consistency
• Can be moulded with your finger
• Good insertion resistance
• High ultimate hardness
• Easy to carve
6
Express Penta Putty/
Ultra-Light Body
™
™
1.1. Express™ Penta™ Putty
1
Chemical background
The innovative formulation of Express Penta Putty, with reactive polysiloxanes
and fillers, makes it easy to dispense and enables problem-free automatic mixing, in spite of its putty consistency.
The special polymer combination also gives the material high ultimate hardness: the preliminary impression is quick and easy to carve, while, at the same
time, the pressure required to press the light-bodied wash material perfectly
into the sulcus is created in the preliminary impression. The highly reactive
polymers contained in Express Penta Putty and Express Ultra-Light Body also
offer another important advantage for the two-step putty wash technique. The
two-stage impression technique can also be carried out quickly because of the
short working and setting times – which is better for patient and dentist alike.
New Penta™ Components
The new Penta components are designed to suit the high viscosity of Express
Penta Putty perfectly, offering maximum safety and reliability for Automatic
mixing in the Pentamix™ 2 Automatic Mixing Unit.
The Penta™ Cartridges are
reinforced with a metal
cylinder.
The new design of the foil
bag caps permits optimal
dispensing of the paste.
The Penta™ Mixing Tip Red
has a new design which
reduces the dispensing
forces by up to 50 percent.
7
Express Penta Putty/
Ultra-Light Body
™
™
1.2. Express™ Ultra-Light Body
1 The light-bodied wash material
The low-viscosity Express Ultra-Light Body is mixed automatically in the
dispenser and is specially formulated for use with Express Penta Putty. It has
outstanding flow properties, even in the moist oral environment, and offers
high mechanical strength.
Advantages of the material in use
• Automatically homogeneous and void-free mixing quality
• Ideal dispenser system for the dental practice
• Permits direct intraoral application
• Very good hydrophilisation
• Outstanding flow properties
• Precise detail reproduction
• Ideal for precisely fitting restorations
• Pronounced structural viscosity
• High tensile strength during removal and further processing in the laboratory
8
Express Penta Putty/
Ultra-Light Body
™
™
1.2. Express™ Ultra-Light Body
1
Chemical background
The increased molecular crosslinking density after setting gives Express
Ultra-Light Body greater mechanical strength than conventional light-bodied
addition-cured silicones. It offers extremely high tensile strength both during
removal from the patient’s mouth and when fabricating the model in the laboratory.
Very good hydrophilisation means excellent flow properties even in the moist
oral environment.
The small proportion of microfine fillers which are very weakly crosslinked
with each other, increases the structural viscosity: even minimal pressure is
sufficient to make Express Ultra-Light Body flow perfectly, while without
pressure, the material is stable. This also makes it ideal for syringing around
the prepared teeth.
Express™ Ultra-Light Body flows finely, and is
extremely resilient after setting, thanks to the
strengthened molecular network.
9
10
Express Penta Putty/
Ultra-Light Body
™
™
2
In-Vitro Research
11
Express Penta Putty/
Ultra-Light Body
™
™
2.1. Insertion Resistance of Putty Silicones
2
Comparison of insertion forces of conventional
and new automixed putty impression materials
Introduction
To date it still has not been possible for a large number of dentists to take
advantage of the benefits of automixing systems for their impression material
for the tray. These dentists prefer to use putty silicones for taking precision
impressions. Due to their very high viscosity levels, these materials have been
typically mixed by hand, incurring the associated disadvantages such as nonhomogeneity and the presence of voids in the mix.
In particular dentists value putty silicones because of their high resistance on
insertion of the tray and the resulting high pressure that forces the low viscosity wash material deep into the sulcus. In addition, the mixed material can be
distributed and shaped in the impression tray with the finger. With Express
Penta Putty the objective is to also offer this group of dentists a suitable
impression material with putty characteristics that can be automatically mixed
in the Pentamix™ Automatic Mixing Unit.
Objective
A valuable property of putty silicone impression materials is high resistance on
insertion of the tray.
The aim of this study is to compare the insertion force of conventional handmix putty materials to the new automix VPS putty impression material Express
Penta Putty.
12
Express Penta Putty/
Ultra-Light Body
™
™
2.1. Insertion Resistance of Putty Silicones
Comparison of insertion forces of conventional
and new automixed putty impression materials
2
Materials and methods*
The new Express Penta Putty (3M ESPE, EXPR) was compared to handmixed
products: Optosil™ Comfort Putty (Heraeus Kulzer, OPTO), President™ Putty
Fast Soft (Coltene, PRES), Panasil™ Putty Soft (Kettenbach, PANA). To differentiate putties from heavy bodies, Dimension™ Penta™ H Quick (3M ESPE,
DIME) was added to the comparison. For the automixed materials a new low
force mixing tip was applied. All materials were mixed for exactly 30 seconds
before testing. The test was conducted on the Zwick Z010 testing machine to
guarantee reproducible results.
Testing machine
Equal quantities of each putty were placed between specially formed dies,
which were moved together with the same velocity until a defined distance was
reached. During this movement the insertion force of the different putties was
recorded.
Filled die
Crosssection showing form
of dies
* See back page for trademarks information
13
Express Penta Putty/
Ultra-Light Body
™
™
2.1. Insertion Resistance of Putty Silicones
Results
President™ Putty
Fast Soft
Panasil™ Putty
Soft
Optosil™ Comfort
Putty
3M ESPE
Express™ Penta™
Putty
The insertion forces were (units in N, SD in brackets):
EXPR: 3423,0 (500,0)
OPTO: 2256,7 (132,4)
PRES: 3489,1 (336,6)
PANA: 3647,2 (235,9)
DIME: 1288,7 (175,3).
3M ESPE
Express™ Penta™
H-Quick
2
Comparison of insertion forces of conventional
and new automixed putty impression materials
As shown by ANOVA (p<0.05), the range of the insertion force of putties in
this study is in the area of 2000 to 4000 N. The insertion force of the automix
VPS 3M ESPE Express Penta Putty is within the typical range of conventional
handmix putties. The values of the heavy body impression material DIME
were significantly below this range.
14
Express Penta Putty/
Ultra-Light Body
™
™
2.1. Insertion Resistance of Putty Silicones
Comparison of insertion forces of conventional
and new automixed putty impression materials
2
Discussion
The high insertion force of the new automix VPS Express Penta Putty is possible due to the special rheological properties of the paste system: The structural
viscosity of the material leads to lower viscosity while mixing (high shear
rates) but putty consistency in the tray (low shear rates). In addition to that the
mixing process is optimized by reinforced Penta™ Components (page 7).
Conclusion
With respect to the insertion resistance the automixed material 3M ESPE
Express Penta Putty shows typical putty properties and offers characteristics
similar to handmixed putties.
Comparable
insertion resistance
15
Express Penta Putty/
Ultra-Light Body
™
™
2.2. Tensile Strength and Contact Angle of VPS
2
Correlation of wetting behaviour and mechanical
properties of light-bodied (LB) VPS materials
Introduction
The clinical success of a precision impression material depends on many different factors. Important features are for example good mechanical properties
of the elastomer during removal of the set impression from the mouth and good
wetting behaviour in the moist environment and while pouring the impression.
The hydrophilicity of VPS impression material can be increased by addition of
surfactants. But these surfactants may interfere with the elastomer network formation and thus weaken the physical properties of set impression materials.
This plasticizer effect can result in a reduction of the tensile strength of the
cured silicone material. Thus hydrophilization of VPS impression materials
may cause an increased risk of tearing during removal of the impression from
the patient’s mouth.
Typical molecular structures of wetting
agents for VPS impression materials
Hydrophilicity of VPS impression materials normally is defined by a measurement of contact angles of drops of water on the surface of impression materials.
Therefore an important goal for the development of new hydrophilic VPS
impression materials is to combine highest possible tensile strength with lowest contact angels.
To improve the elastomeric properties of a new hydrophilic VPS impression
material the network of the chemical matrix was reinforced. Newly developed
crosslinkers build up a higher crosslink density of the elastomeric network
after setting to compensate the loss of tensile strength caused by the surfactant.
16
Express Penta Putty/
Ultra-Light Body
™
™
2.2. Tensile Strength and Contact Angle of VPS
Correlation of wetting behaviour and mechanical
properties of light-bodied (LB) VPS materials
2
Objective
The aim of this study was to investigate the influence of the degree of
hydrophilization on the elastomeric properties of VPS impression materials.
A newly developed VPS impression material with a reinforced network was
compared to several conventional products.
Measurement of Tensile Strength
Measurement of Contact Angle
Materials and methods*
Tensile strengths and hydrophilization of the following materials were compared: Provil™ Novo Light C. D. Fast set (Heraeus Kulzer, PN, LOT 200397),
Express™ Light (3M ESPE, EL, LOT 20010208), Panasil™ Contact Plus (Kettenbach, PC, LOT 30451) and the newly developed Express Ultra-Light Body
(3M ESPE, EU, experimental batch). To determine the degree of hydrophilization three specimens (38 mm x 32 mm x 3 mm) of each material were
produced. One hour after mixing base and catalyst paste the 10 second contact
angle (CA) of four drops of water on each specimen was determined using a
standard goniometer.
Tensile strength was determined by producing six l-shaped specimens with
a central unit of 20 mm x 4 mm x 2 mm. Ten hours after mixing of base and
catalyst paste tensile strength was measured using a Zwick machine.
* See back page for trademarks information
17
Express Penta Putty/
Ultra-Light Body
™
™
2.2. Tensile Strength and Contact Angle of VPS
2
Correlation of wetting behaviour and mechanical
properties of light-bodied (LB) VPS materials
Results
Mean values and standard deviations are given in the following table. ANOVA
(p<0.05) and Tukey tests confirmed significant differences for contact angels
and tensile strength data, except groups indicated by asterisks.
Material
EL
PN
PC
EU
CA
65 (1)
78 (2)
105 (1)
42 (4)
Tensile Strength
2,4 MPa (0.1)*
2,6 MPa (0.1)*
3,1 MPa (0.2)
4,4 MPa (0.4)
Tensile Strength
Tensile Strength
Express™ Green Wash Express™ Ultra-Light Panasil™ Contact Plus
Provil™ Novo Light
Express™ Green Wash Express™ Ultra-Light Panasil™ Contact Plus
Provil™ Novo Light
Tensile Strength
Express™ Green Wash Express™ Ultra-Light Panasil™ Contact Plus
Provil™ Novo Light
Express™ Green Wash Express™ Ultra-Light Panasil™ Contact Plus
Express™ Green Wash Express™ Ultra-Light Panasil™ Contact Plus
18
Provil™ Novo Light
Provil™ Novo Light
Express Penta Putty/
Ultra-Light Body
™
™
2.2. Tensile Strength and Contact Angle of VPS
Correlation of wetting behaviour and mechanical
properties of light-bodied (LB) VPS materials
2
Discussion
All products in this test are Type 3 VPS impression materials. EL, PN, PC
show significantly different degrees of hydrophilization. For these products
a decrease in contact angle seems to be connected to a decrease in tensile
strength although tensile strength data for EL and PN are not significantly
different.
Only EU (3M ESPE Express Ultra-Light Body) does not fit into this series
as it shows the highest hydrophilicity (lowest contact angels) and the highest
tensile strength in this test. This may be due to the reinforcement of the VPS
network which was realized by addition of newly designed crosslinkers. Those
are believed to increase the crosslink density of EU and thus compensate the
weakening effect of surfactants in this case. This may be supported by the fact
that the consistency of EU (3M ESPE Express Ultra-Light Body) is on a comparable level as the other materials in this study. Therefore the higher tensile
strength of EU (3M ESPE Express Ultra-Light Body) should mainly result
from an increased crosslink density of the VPS network and not from a higher
filler content.
Conclusion
EL, PN and PC show a tendency towards decreasing tensile strength with
increasing degree of hydrophilicity indicated by decreasing contact angle. In
contrast 3M ESPE Express Ultra-Light Body shows the highest tensile strength
and hydrophilicity in this test.
19
20
Express Penta Putty/
Ultra-Light Body
™
™
3
European Field
Evaluation –
Results
21
Express Penta Putty/
Ultra-Light Body
™
™
3.1. Participants / Result Categories
Comprehensive assessment by more than 220 dentists
3
As part of a European dental practice study, in which more than 220 dentists
from ten countries took part, over 3,000 impressions were taken with Express
Penta Putty. The participating dentists then assessed Express Penta Putty and
Express Ultra-Light Body, and their automatic handling in the Pentamix™ 2
Automatic Mixing Unit, in a detailed survey. Their opinions about the impression quality were also included in the study.
The sequence in which the results of this extensive evaluation are presented in
the first subsections basically reflects the chronology of the impression-taking process. The last subsection focuses on the assessment of the system as a
whole.
Express™ Penta™ Putty and Express™ Ultra-Light Body Vinyl Polysiloxane Impression Material
22
Express Penta Putty/
Ultra-Light Body
™
™
3.2. Impression Techniques, Materials, Indications
Details about use
32 percent of the participating dentists used the two-step putty wash technique
exclusively, while 31 percent used the one-step tray wash technique for all their
impressions, and the remaining 37 percent used both techniques.
Express Penta Putty and Express Ultra-Light Body were used with the two-step
putty wash technique for half of all the impressions taken. With the one-step
tray wash technique, the same material combination was used for 37 percent
of all the impressions. For the remaining 13 percent, Express Penta Putty was
combined with another VPS light-bodied wash material from 3M ESPE. The
indications for over 80 percent of all the impressions were crowns (56 percent)
and bridges (27 percent).
The majority of the dentists (65 percent) used metal fullarch trays (52 percent),
and metal partial trays (13 percent) were used in addition.
Total number of impressions for each indication
1.577
Number of impressions
1800
1440
1080
771
720
293
360
172
0
Crowns
Bridges
Inlays/Onlays
Others
23
3
Express Penta Putty/
Ultra-Light Body
™
™
3.3. Assessment of the Tray Material
Automatic mixing and dispensing
100
% of dentists
75
64%
50
29%
25
6%
0
Very Easy
Easy
No advantage
93 percent of participating dentists assessed automatic mixing and dispensing with the
Pentamix™ 2 Automatic Mixing Unit as easy or very easy.
100
80%
75
% of dentists
3
50
20%
25
0
Precise to the gram
No advantage
35
Not even
30 an experienced user of malleable silicone can work to such a degree of accuracy:
80 percent of participants considered dispensing with the Pentamix™ 2 Automatic Mixing Unit
to be25
precise to the gram.
20
15
10
5
24 0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
Express Penta Putty/
Ultra-Light Body
™
™
3.3. Assessment of the Tray Material
Automatically homogeneous and void-free mixing
3
100
82%
% of dentists
75
50
25
15%
3%
0
Always homogeneous
& free of bubbles
Mostly homogeneous
& free of bubbles
No advantage
The mixing quality also impressed in the dental practice: 82 percent of the dentists described
the mixed Express™ Penta™ Putty VPS Material as always homogeneous and free of bubbles.
100
% of dentists
75
50
53%
38%
25
9%
0
Much better
Somewhat better
No advantage
35
91 percent
judged the mix quality of Express™ Penta™ Putty VPS Material to be better or much
30
better compared with the usual hand mixing of their putty material.
25
20
15
10
5
0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
25
Express Penta Putty/
Ultra-Light Body
™
™
3.3. Assessment of the Tray Material
Material saving; hygienic handling
100
% of dentists
75
51%
50
25
38%
11%
0
High
Medium
Small
The amount of material saved by automatic handling in the Pentamix™ 2 Automatic Mixing
Unit was stated as high or medium by 49 percent of users.
100
75
% of dentists
3
70%
50
26%
25
4%
0
Very good
35
Good
Requires some adjustment of the user
96 percent
considered the hygiene with automatic mixing of the putty material in the
30
Pentamix™ 2 Automatic Mixing Unit good or very good, compared with the usual hand mixing
of the25malleable silicone.
20
15
10
5
26 0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
Express Penta Putty/
Ultra-Light Body
™
™
3.3. Assessment of the Tray Material
Essential for any putty material:
malleable with your finger
3
100
% of dentists
75
57%
50
33%
25
10%
0
Very well
Well
Not too well
A classic putty characteristic which HB materials do not offer. 90 percent of the dentists found
that the mixed Express™ Penta™ Putty VPS Material paste could be moulded well to very well
with their fingers.
35
30
25
20
15
10
5
0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
27
Express Penta Putty/
Ultra-Light Body
™
™
3.3. Assessment
EFE: Bewertung
of thedes
Tray
Löffelmaterials
Material
Good values for putty consistency and carvability
100
% of dentists
75
58%
50
32%
25
10%
0
Very good
Good
Not too good
The viscosity of the material impressed putty users: 90 percent of the study participants found
the putty consistency of Express™ Penta™ Putty VPS Material good or very good.
100
75
% of dentists
3
61%
50
25
20%
16%
3%
0
Very easy
Easy
Somewhat difficult
Very difficult
35
A decisive
advantage for two-step putty wash impressions: Express™ Penta™ Putty VPS
30
Material was described by 81 percent of participants as easy or very easy to carve.
25
20
15
10
5
28 0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
Express Penta Putty/
Ultra-Light Body
™
™
3.4. Assessment
of thedes
Light-bodied
Wash Material
3.3.
EFE: Bewertung
Löffelmaterials
Excellent flow properties, high stability
3
100
% of dentists
75
50
37%
38%
25
14%
9%
0
Excellent
Good
Satisfactory
Poor
1%
Very poor
75 percent of the dentists said that the flow of the low-viscosity Express™ Ultra-Light Body
Wash Material onto the prepared tooth was good or excellent.
100
% of dentists
75
50%
50
25
19%
18%
11%
0
Excellent
Good
Satisfactory
Poor
2%
Very poor
35
The stability
of Express™ Ultra-Light Body Wash Material on the prepared tooth was judged
30
good or excellent by 69 percent.
25
20
15
10
5
0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
29
Express Penta Putty/
Ultra-Light Body
™
™
3.3.
3.4. Assessment
EFE: Bewertung
of thedes
Light-bodied
Löffelmaterials
Wash Material
High tear strength, fine detail reproduction
100
% of dentists
75
56%
50
25
19%
19%
0
Excellent
Good
Satisfactory
5%
1%
Poor
Very poor
The tear strength of the low-viscosity Express™ Ultra-Light Body Wash Material was assessed
by 75 percent of users as good or excellent.
100
75
% of dentists
3
50
40%
42%
25
13%
0
Excellent
Good
Satisfactory
4%
0%
Poor
Very poor
35
The very
30 good hydrophilisation impressed in the dental practice: 82 percent of dentists also
judged the detail reproduction of Express™ Ultra-Light Body Wash Material to be good or
25
excellent.
20
15
10
5
30 0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
Express Penta Putty/
Ultra-Light Body
™
™
3.5. Assessment
of thedes
Result
Quality
3.3.
EFE: Bewertung
Löffelmaterials
Superior impression precision in the view of many
dentists
3
100
% of dentists
75
47%
50
30%
25
18%
0
Excellent
Good
Satisfactory
4%
0%
Poor
Very poor
The precision of impressions taken with Express™ Penta™ Putty VPS Material and Express™
Ultra-Light Body Wash Material was assessed by 77 percent of users as excellent or good.
100
% of dentists
75
45%
50
25
29%
12%
11%
0
35
Much
better
Somewhat
better
No
difference
Somewhat
worse
4%
A lot worse
56 percent
of participating dentists stated that they achieved somewhat better or much better
30
impression precision with Express™ Penta™ Putty VPS Material and Express™ Ultra-Light Body
Wash25Material than with their existing impression material.
20
15
10
5
0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
31
Express Penta Putty/
Ultra-Light Body
™
™
3.3.
3.5. Assessment
EFE: Bewertung
of thedes
Result
Löffelmaterials
Quality
Impressive accuracy of fit of the fabricated
prosthetic work
100
% of dentists
75
54%
50
30%
25
14%
0
Excellent
Good
Satisfactory
3%
0%
Poor
Much poor
84 percent of test participants awarded a rating of good or excellent for accuracy of fit of the
fabricated restoration.
100
75
% of dentists
3
50%
50
29%
25
11%
8%
0
Much better
35
Somewhat
better
No difference
Somewhat
worse
1%
A lot worse
37 percent
described the accuracy of fit of the fabricated prosthetic work as better or much
30
better than with the impression material they used up to now.
25
20
15
10
5
32 0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
Express Penta Putty/
Ultra-Light Body
™
™
3.5. Assessment
of thedes
Result
Quality
3.3.
EFE: Bewertung
Löffelmaterials
Dental laboratory assessment confirms favourable
opinion from the dental practice
3
100
% of dentists
75
66%
50
25
18%
14%
0
Excellent
Good
Satisfactory
1%
1%
Poor
Very poor
Positive feedback from the dental laboratory: 84 percent of the dental technicians involved rated
the impression quality with Express™ Penta™ Putty VPS Material and Express™ Ultra-Light
Body Wash Material as good or excellent.
100
% of dentists
75
50
40%
40%
25
9%
8%
0
Much better
35
Somewhat
better
No difference
Somewhat
worse
2%
A lot worse
Compared
to impressions taken with the usual materials from the respective practice, 48 percent
30
of dental technicians considered the impression quality with Express™ Penta™ Putty VPS mate25 Express™ Ultra-Light Body Wash Material better or much better.
rial and
20
15
10
5
0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
33
Express Penta Putty/
Ultra-Light Body
™
™
3.6. Assessment of the Complete System
Overall assessment compared to previously used
material
100
% of dentists
75
49%
50
25
19%
11%
17%
4%
0
Much better
Somewhat
better
No difference
Somewhat
worse
A lot worse
60 percent of test users rated Express™ Penta™ Putty VPS Material somewhat better or much
better overall than the material they normally used for the impression tray.
100
75
% of dentists
3
50
25
38%
24%
14%
19%
6%
0
Much better
35
Somewhat
better
No difference
Somewhat
worse
A lot worse
Express
30 ™ Ultra-Light Body Wash Material was judged by 52 percent of the dentists to be
somewhat better or much better than the light-bodied wash material they used up to now.
25
20
15
10
5
34 0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
Express Penta Putty/
Ultra-Light Body
™
™
3.6. Assessment of the Complete System
Changes to the method of working thanks to the
Pentamix™ 2 Automatic Mixing Unit
3
100
% of dentists
75
50
53%
47%
48%
25%
25
7%
0
Easier
overall
More relaxed
Cleaner
More hygienic More elaborate
overall
When asked about automatic mixing in the Pentamix 2, the test dentists stated how they found
the new method of working (multiple answers were possible):
53 percent of all participants considered automatic mixing of the putty material in the
Pentamix™ 2 Automatic Mixing Unit to be cleaner compared to normal hand mixing.
48 percent said it was more hygienic, and almost as many (47 percent) found that mixing with
the Pentamix 2 was easier overall.
Furthermore, one in four dentists thought it worth special mention that the automatic mixing
method for the putty required less effort and was more stress-free.
35
30
25
20
15
10
5
0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
35
Express Penta Putty/
Ultra-Light Body
™
™
3.6. Assessment of the Complete System
Assessments categorised according to material
combination and dentist’s preferred technique
3
The users were asked what they considered to be the two biggest advantages
of the new impression system. The answers received were then categorised by
preferred technique and material combination.
Express Penta Putty combined with Express Ultra-Light Body
The following ranking is derived from the response of dentists who only use
the two-step putty wash technique: Hygiene, ease of handling, high precision/accuracy of fit. Dentists who only use the one-step tray wash technique
also put hygiene at the top of their list, followed by mixing quality and ease of
handling.
Hygiene was also the number one advantage in the view of dentists who use
both techniques, depending on the particular indication. Simple usage and
outstanding precision and accuracy of fit came in at numbers two and three.
Express Penta Putty combined with another LB VPS material from
3M ESPE
Dentists who only take one-step tray wash impressions and also use Express
Penta Putty in combination with another addition-cured silicone light-bodied
wash material from 3M ESPE regarded the mixing quality and specific consistency of the putty material as the two most important advantages.
Participants who use both the one-step and two-step impression techniques
with the same material combination particularly valued the fact that the
material is suitable for both. Further advantages cited were the high precision
and mixing quality.
36
Express Penta Putty/
Ultra-Light Body
™
™
3.6. Assessment of the Complete System
Around four out of five dentists intend to
recommend the material to their colleagues
3
100
% of dentists
75
68%
50
25
18%
14%
No
No reply
0
Yes
Many of the dentists would like to pass on their positive experiences: 79 percent of all the
participants in Europe intend to recommend the new impression material to their colleagues.
Irrespective of the material combination or impression technique used, these dentists stated that
the ease of handling was the most important argument for their recommendation. They were
equally impressed by the hygiene, cleanliness and precision.
Those who only use the one-step tray wash technique put the speed of use in second place.
Dentists who only use the two-step putty wash technique describe the system as an ideal
solution for the two-stage method in the dental practice.
35
30
25
20
15
10
5
0
Nexus™ 2
Panavia™ F RelyX™ Unicem Variolink™ II
37
38
Express Penta Putty/
Ultra-Light Body
™
™
4
Testimonials by the
Study Participants
39
Express Penta Putty/
Ultra-Light Body
™
™
4. Personal Comments by the Participating Dentists
Impressively easy to use
4
In unsolicited comments, the participants in the European dental practice study
reported on what they particularly liked about Express Penta Putty/Ultra-Light
Body. The individual statements by the dentists covered a wide range of advantages for impression taking in the dental practice. The ease of handling, consistent mixing quality, reliable precision plus hygiene and cleanliness are quite
evidently aspects to which the study participants personally attach importance.
Ideal for different techniques and material
combinations
Both the users of the two-step putty wash technique and dentists who prefer
the one-step tray wash technique are convinced of the benefits offered by the
new materials. Numerous participants additionally singled out the advantages
of the new Express Penta Putty in combination with their normal choice of
addition-cured wash material from 3M ESPE. (Further information about the
possible combinations of viscosities can be found in the section “Questions
and Answers”.)
40
Express Penta Putty/
Ultra-Light Body
™
™
4. Personal Comments by the Participating Dentists
• “Try it yourself ” Germany, 2-step-technique user
• “Very precise, well fitting results, economical” Germany,
2-step-technique user
• “Clean, hygienic, easy to handle solution for 2-step-technique” German user
• “Easy and no-stress handling” Germany, 2-step-technique user
• “Easy to carve” Germany, 2-step-technique user
• “No more mixing assistant, constant impression quality, clean working
process” Germany, 2-step-technique user
• “Perfect material for two-step technique” Italian user
• “Absence of bubbles” Italy, 1-step and 2-step-technique user
• “Precise, fast hygienic” Italy, 1-step-technique user
• “Reliability and ergonomy” France, 1-step-technique user
• “The top of the technology” France, 1-step-technique user
• “Very good for a doctor working alone” France, 1-step-technique user
• “Quick, clean, precise, hygienic” France, 4 different 2-step-technique users
• “Very easy to use” Spain, 7 different users, 1-step and 2-step-technique
• “Real putty for Pentamix” Spain, 1-step and 2-step-technique user
• “Express Ultra-Light Body is the best Ultra-light” Spain, 1-step and
2-step-technique user
• “We are very happy to use this material and use it with the Pentamix mixer”
Sweden, 1-step and 2-step-technique user (existing 3M ESPE wash)
• “Always equal mixing” Sweden, 1-step-technique user
(existing 3M ESPE wash)
• “Easy, accurate, precise” Sweden, 1-step-technique user
(existing 3M ESPE wash)
• “Excellent material – Price?” Sweden, 1-step-technique user
(existing 3M ESPE wash)
• “Will be used in our practice in the future” Norway, 1-step-technique user
(3M ESPE wash)
• “I’m very satisfied with this system and material and can recommend it”
Norway, 1-step-technique user (3M ESPE wash)
• “Easy mixing procedure for assistant” Norway, 1-step-technique user
(3M ESPE wash)
• “Good” Norway, 1-step-technique user (3M ESPE wash)
41
4
42
Express Penta Putty/
Ultra-Light Body
™
™
5
Questions and
Answers
43
Express Penta Putty/
Ultra-Light Body
™
™
5. Questions and Answers
Can Express Penta Putty also be mixed in the Pentamix™ 1
Automatic Mixing Unit?
5
No, Express Penta Putty must be mixed in the Pentamix™ 2 Automatic Mixing
Unit. Only this unit has the necessary mixing speed. Specific added components ensure reliable mixing of the heavy-bodied Express Penta Putty in the
Pentamix 2: Special Penta™ Mixing Tips Red reduce the dispensing forces.
The new design of the foil bag end and the metal-reinforced Penta™ Cartridge
guarantee the required mechanical strength.
What will happen if conventional mixing tips are fitted to the
Pentamix 2 by mistake?
The end of the Express Penta Putty foil bag is designed so that only the new
(red) Penta mixing tips can be fitted. Accidental use of old (white) tips is
therefore impossible.
What types of tray are ideal for Express Penta Putty?
Torsionally rigid edentulous or partial metal trays, with or without perforation,
are the most suitable. For reliable adhesion of the impression material, the tray
is pre-treated with a tray adhesive for addition-cured silicones, e.g. 3M ESPE
VPS Tray Adhesive. Undercuts should be blocked out.
What points require special attention if you want to mould Express
Penta Putty in the tray with your finger?
Just a few seconds after filling the tray from the Pentamix 2, the material in the
tray can be moulded as required with your finger, with no sticking – just like
any malleable silicone. As with other addition-cured silicones for precision
impressions, you should avoid direct contact with the material if you are wearing latex gloves. It is therefore recommended to use vinyl gloves.
44
Express Penta Putty/
Ultra-Light Body
™
™
5. Questions and Answers
For which impression technique are Express Penta Putty and Express
Ultra-Light Body most suitable?
Express Penta Putty and Express Ultra-Light Body is the ideal combination
for the two-step putty wash technique and the one-step tray wash technique.
For the one-step putty wash technique Express Penta Putty can be also combined with other 3M ESPE wash materials (e.g. Express™ Light Body [blue]
or Imprint™ II Garant™ Quick Step [orange]).
Advantages for two-step putty wash impressions:
The two-stage method is particularly suitable for the dental practice thanks to
the agreeably short working and setting times of both viscosities.
The putty material is easy to carve. Its high ultimate strength means that the
preliminary impression exerts a high pressure, so that the wash material flows
finely and can be pressed into the sulcus efficiently.
Advantages for one-step tray wash impressions:
The automatic mixing of both consistencies and the short working and setting
times make the single-stage method even quicker, as confirmed by numerous
assessments by dental practices.
What wash materials can Express Penta Putty be combined with?
The low-viscosity Express Ultra-Light Body was developed specially for use
with Express Penta Putty. However, the automatically mixable Express Penta
Putty can also be used in combination with other addition-silicone wash materials from 3M ESPE.
Like all addition-cured silicones, Express Penta Putty and Express Ultra-Light
Body are not compatible with condensation-cured silicones, alginates or
polyethers.
How should the area where the impression is to be taken be prepared?
If a retraction cord is used, this should first of all be thoroughly removed.
All the areas of which an impression is required must be dried.
As from when can the model be cast?
Just two hours after disinfection, the model can be produced with a standard
dental stone. To prevent voids on the model, the impression is rinsed with
water and blown dry shortly before casting. Alternatively, a silicone wetting
agent can be used.
45
5
46
47
The charts in this brochure were reproduced by
3M ESPE from the data listed in the cited sources.
3M ESPE AG · ESPE Platz
82229 Seefeld · Germany
3M ESPE Dental Products
3M Center
Building 0275-02-SE-03
St. Paul, MN 55144-1000
USA
3M, ESPE, Dimension, Express, Garant, Imprint, Penta
and Pentamix are trademarks of 3M or 3M ESPE AG.
Optosil and Provil are trademarks of Heraeus Kulzer.
President is a trademark of Coltene.
Panasil is a trademark of Kettenbach.
© 3M 2005
All rights reserved