At-a-Glance
- Technique & Clinical Cases
80 YEARS OF SWEDISH QUALITY IN THE GLOBAL DENTAL SERVICE
Twin Luscent Anchors
Dentatus, known worldwide as a designer of systems
and manufacturer of innovative dental products, produces a
wide range of precision high tech dental products that
are distributed worldwide.
Twin Luscent Anchors
Light Translucent Esthetic Posts for Endodontically Treated Teeth
The Twin Luscent winning combination
• Light transmission
• Attractive esthetics
• Twice the retention
Twin Luscent Anchors
Primary Benefits
Patient
• Superior functional and esthetic restoration
Clinician
• Time-saving procedure, superior end product
Twin Luscent Anchors
Primary Benefits
Strong
• Strengthens the restoration
Fast
• One-stop procedure: simultaneously luting the
anchor and building a monoblock core
Convenient
• Compatible with brand name dual-cure adhesives/resins
Removable
• Easily removed using Dentatus reamers
Twin Luscent Anchors
Benefits
Esthetic
• Twin Luscent Anchors eliminate shadows at
the gingival, root and crown interface as well as
through thin composite restoration
• Twin Luscent Anchors reflect the surrounding
colors and hues compatible with natural esthetics
Twin Luscent Anchors
Benefits
Light Transmitting
• Twin Luscent Anchors effectively polymerize
composite within the deep confines of canals
Including:
• Large canals weakened after
endondontic treatment
• Extension of caries into the coronal portion
and pulp chamber
• Developmental anomalies
• Trauma or over-preparation of root canal
Twin Luscent Anchors
Benefits
Monoblock Strength
• Light or dual-cure composites bond to the
fiberglass-reinforced anchors and the canal wall
creating a cohesive and very strong foundation
Twin Luscent Anchors
Benefits
Potential fracture location with
fiberglass-reinforced composite posts
Fractured
Post and
Crown
Vector of
Force
Fractured
Post and
Crown
Vector of
Force
Potential fracture location with metal posts
Fractured
root
Vector of
Force
Fractured
root
Vector of
Force
Reduced Incidence of
Root Fractures
• Twin Luscent Anchors
absorb and dissipate
sudden stresses
Twin Luscent Anchors
Benefits
Removable
• Anchors are easily removed with either
a large size NiTi rotary engine file or
Dentatus Reamer
Example
Post fracture-post removal
• Cut post flush to tooth
• Create pilot in post with pin drill
• Remove post with Gates
Glidden #4 or Probos Pathfinder
• Continue to remove post with
largest nickel titanium
rotary file
Twin Luscent Anchors
Benefits
Removable - Example (continued)
• Probos Pathfinder or Gates Glidden
down the center of the post
• Large Nickel Titanium file in rotary
handpiece to remove remaining post
• After removal of post, resize
canal with another post
• Cement post or cast post and core
• Restore with at least 1.5-2.0 mm ferrule
Anchor Design
Twin Luscent Anchor
Element
Narrow radial
midsection
Longitudinal
vent-grove
Cone-shaped end/
parallel end
Benefit
Mechanical
resistance
Provides double retention against
accidental debonding of resins and other
restorative materials
Easy release
of excess resin
Eliminates hydro-static pressure
Anti-rotational
resistance
Creates an anti-rotational resistance in the
surrounding polymerized resin
Double end
alternatives
Cone-shaped end can be placed in
deeper/narrower canals without excess
removal of dentin or canal wall
Parallel and can be alternatively placed into
wider canals
Original Luscent Anchor
True taper
Optimal choice for very narrow and small
canals, from 0.8 mm to 1.2mm
Anchor Design
Twin Luscent Anchor
Element
Narrow radial
midsection
Longitudinal
vent-grove
Cone-shaped end/
parallel end
Benefit
Mechanical
resistance
Provides double retention against
accidental debonding of resins and other
restorative materials
Easy release
of excess resin
Eliminates hydro-static pressure
Anti-rotational
resistance
Creates an anti-rotational resistance in the
surrounding polymerized resin
Double end
alternatives
Cone-shaped end can be placed in
deeper/narrower canals without excess
removal of dentin or canal wall
Parallel and can be alternatively placed
into wider canals
Original Luscent Anchor
True taper
Optimal choice for very narrow and small
canals, from 0.8 mm to 1.2mm
Twin Luscent Anchors
Benefits
Shape Matches Root Form
apical
seal
CEJ
Twin Luscent
Luscent
• Twin Luscent and Luscent Anchors
completely fit within the confines of
natural teeth
• Anchor design is tapered apically to
match root form, minimizing
unnecessary removal of dentin in the
canal
Twin Luscent Anchors
Benefits
Benefits of the Physical Properties
Longitudinal fiberglass rods in a bondable
matrix resin with low modulus or elasticity
closely resembling that of dentin, 20.1 Gpa.
Post
Mod. Elast. (Gpa)
Fibrekor
22.22 (.94)
Luscent
20.41 (1.97)
Finished Elements Manners (FEM)
of the stress in the interface dentin-post
Cerapost
156.63 (4.23)
Cosmopost
152.01 (3.15)
Steel post maximum stress 7.51 Mpa
Carbon post maximum stress 3.45 Mpa
Glass post maximum stress 2.22 Mpa
The results show the best behavior of glass
fiber posts which are the most elastic.
Source: Sandro Rengo. Atti del Ill Simposio Internazionale Odontioiatria Adesiva e Ricosruttiva.
Al-Harbi FA, Nathanson D. Mechanical and retentive properties of new aesthetic posts. J Dent Tex 80
(AADR Abstracts) 2001, (Boston University, Boston Mass).
Twin Luscent Anchors
Benefits
Post
Core ret. (KN)
Fibrekor
0.422 (0.052)
Luscent
0.308 (0.028)
Cerapost
0.301 (0.040)
Cosmopost
0.296 (0.044)
Benefits of the Physical Properties
• High adhesion to composite materials.
The glass fibers contain silica similar to filler materials.
Source: Al-Harbi FA, Nathanson D. Mechanical and retentive properties of new aesthetic posts.
J Dent Tex 80 (AADR Abstracts) 2001, (Boston University, Boston Mass).
Twin Luscent Anchors
Benefits
Post
Flex. Str. (Mpa)
Fibrekor
277.92 (27.68)
Luscent
579.93
Cerapost
454.25 (105)
Cosmopost
357.37 (9.44)
Benefits of the Physical Properties
• Flexural strength within the range of healthy teeth
and outperforming metal posts, 579 Mpa.
Source: Al-Harbi FA, Nathanson D. Mechanical and retentive properties of new aesthetic posts.
J Dent Tex 80 (AADR Abstracts) 2001, (Boston University, Boston Mass).
Twin Luscent Anchors
Benefits
In Vitro Post-Tooth Retention
700
600
500
400
300
200
100
0
Cerapost
Cosmopost
Luscent
Twin
Luscent
FiberKor
ParaPost
ParaPost
(ZOP)
Benefits of the Physical Properties
• All posts inserted to same length (9mm)
• All posts cemented with resin cement (Bisco) except “ParaPost (ZOP” that
were cemented with zinc phosphate cement (as a control)
• All ParaPosts are titanium
Source: Al-Harbi FA, Nathanson D. BU, 2001
Twin Luscent Anchors
Benefits - summary
•
•
•
•
•
•
•
•
•
•
•
Light transmitting
True root canal shape (tapered end)
Mechanical retention
Elimination of trapped air
Longitudinal glass fibers (post reinforcement)
Conserves sound radicular and coronal structure
Translucent
Anti-rotational
Easy removal
3 diameters of posts
Bondable, resin-based
Twin Luscent Anchors
Procedure – Simple Technique
1
PATHFINDER
Reamer
PROBOS II
Twin Luscent Anchors
Procedure – Simple Technique
2
OR
Diamond
Alcohol
Air dry
Twin Luscent Anchors
Procedure – Simple Technique
3
Etch
H20
Air Dry
Twin Luscent Anchors
Procedure – Simple Technique
4
Bonding Agent
Dual-Cure Resin*
Twin Luscent Anchors
Procedure – Simple Technique
5
Insert
6
Light
Cure
Core
Build up
Core
Preparation
Twin Luscent Anchors
Procedure – Simple Technique Review
1
2
3
4
5
6
Twin Luscent Anchors
Case Study
Restoring the Endodontically Treated Tooth
with Fiber Reinforced Resin Posts
Howard E. Strassler, DMD, FADM, FAGD
Department of Restorative Dentistry
Dental School
University of Maryland
Twin Luscent Anchors
Case Study
Indications for fiber posts
• Need for esthetic translucency
• Need for root reinforcement, sealing and strengthening
• At least 1.5 mm ferrule in the tooth preparation
• Provide for a monoblock system of core
bonded to post bonded to tooth
• Create a failsafe design that if traumatized the tooth crown
and post would fracture leaving the root intact
Twin Luscent Anchors
Case Study
Important points for post selection
• Posts must transmit light to eliminate gingival and
tooth shadowing
• Post should be tapered following the true shape of the
root canal and leaving more radicular dentin
• Post should not transmit forces down the root during
trauma; the post should dissipate forces and fracture
before the tooth and root
• If broken, the post be easily removed
• Post comes in multiple sizes to accommodate
different root canal diameters
Twin Luscent Anchors
Case Study
Preoperative View
• Endodontically treated maxillary lateral
incisor with defective Class 3
restorations and an endodontic access
opening Twin Luscent Anchor
• Decision to restore with adhesive
composite resin supported by a
bondable Twin Luscent Anchor
Twin Luscent Anchors
Case Study
Post Space
• The length of the canal was determined
with a radiograph
• Sized reamers determined the Twin
Luscent size to be used
• Post space (length) was created by
removing the gutta percha with a
Pathfinder then a Luscent Reamer
Twin Luscent Anchors
Case Study
Anchor Placement
• Twin Luscent Anchor was
tried into the canal and length verified
• Canal was etched for 15 seconds
Twin Luscent Anchors
Case Study
Rinsing and drying the canal
• Canal was rinsed using an endodontic
irrigation syringe with water
• Canal was dried with a large
paper point
Twin Luscent Anchors
Case Study
Adhesive application
• A 4th-generation adhesive was used
with a separate primer and adhesive
resin in the root canal
• The adhesive must be either a dual cure
or self-cure adhesive compatible with a
self-cure or dual-cure composite
resin cement
Twin Luscent Anchors
Case Study
Cementation of Twin Luscent
• Twin Luscent Anchor painted with
adhesive
• Dual-cure composite resin cement
syringe into the canal with a Needle
Tube
Twin Luscent Anchors
Case Study
Anchor Placement
• Twin Luscent Anchor seated into the
root canal and cemented.
Note, twirling motion used in seating
the anchor.
• Light cure for 60 seconds
Twin Luscent Anchors
Case Study
Preparation for all-ceramic crown
• The Twin Luscent Anchor was cut down
to the level of the access with a
diamond on a high speed handpiece
• Restoration of the access and Class 3s
with composite resin. Note, no
discoloration of gingiva with Twin
Luscent Anchor.
• Preparation for an all-ceramic crown
Twin Luscent Anchors
Case Study
All ceramic crown cementation
• Preparation etched for
15 seconds, rinsed and dried
• Dentin primer painted
on preparation
Twin Luscent Anchors
Case Study
All ceramic crown cementation
• Dual cure adhesive painted
on preparation
• All-ceramic crown cemented
with dual-cure composite resin cement
Twin Luscent Anchors
Case Study
Final all-ceramic crown
• Excess cement removed; crown light
cured for 30 seconds on facial surface,
30 seconds on lingual surface
• The final restoration, highly esthetic
and translucent
Twin Luscent Anchors
Kits
LUT-K1, Twin Luscent Starter Kit
15 anchors (assorted s, m, l)
with all accessories
LUC-K3, Luscent Starter Kit
15 anchors (assorted s,m,l)
with all accessories
Refill Kits
5 or 15 anchors (individual size only)
Light transmitting Forms-to-Fit