at-a-glance - technique & clinical cases

80 YEARS OF SWEDISH QUALITY IN THE GLOBAL DENTAL SERVICEAt-a-Glance- Technique & Clinical Cases

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 AnchorsLight Translucent Esthetic Posts for Endodontically Treated Teeth

The Twin Luscent winning combination

• Light transmission

• Attractive esthetics

• Twice the retention

Twin Luscent AnchorsPrimary Benefits

Patient• Superior functional and esthetic restoration

Clinician• Time-saving procedure, superior end product

Twin Luscent AnchorsPrimary 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 AnchorsBenefits

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


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


Monoblock Strength

• Light or dual-cure composites bond to the fiberglass-reinforced anchors and the canal wall creating a cohesive and very strong foundation


Reduced Incidence of Root Fractures

• Twin Luscent Anchors absorb and dissipate sudden stresses

Potential fracture location with fiberglass-reinforced composite posts

Vector of Force

Vector of Force

Vector of Force

Vector of Force

Fracturedroot

Fracturedroot

FracturedPost and

Crown

FracturedPost and Crown

Potential fracture location with metal posts


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


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

Element Benefit

Narrow radial midsection

Mechanical resistance

Provides double retention against accidental debonding of resins and other restorative materials

Longitudinal vent-grove

Easy release of excess resin

Eliminates hydro-static pressure

Anti-rotational resistance

Creates an anti-rotational resistance in the surrounding polymerized resin

Cone-shaped end/parallel end

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

Anchor DesignTwin Luscent Anchor

Original Luscent Anchor

Optimal choice for very narrow and small canals, from 0.8 mm to 1.2mm

True taper


Shape Matches Root Form

• 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 Luscent

apical

seal

CEJ


Benefits of the Physical PropertiesLongitudinal 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)

Cerapost 156.63 (4.23)

Cosmopost 152.01 (3.15)

Finished Elements Manners (FEM) of the stress in the interface dentin-post

Steel post maximum stress 7.51 MpaCarbon post maximum stress 3.45 MpaGlass 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).


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).

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• 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).

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•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

0

100

200

300

400

500

600

700

Cerapost Cosmopost Luscent TwinLuscent

FiberKor ParaPost ParaPost(ZOP)

In Vitro Post-Tooth Retention

Twin Luscent AnchorsBenefits - 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 AnchorsProcedure – Simple Technique

PATHFINDER Reamer PROBOS II

1


Diamond Alcohol Air dry

OR

2


Etch H20 Air Dry

3


Bonding Agent Dual-Cure Resin*

4


LightCure

Insert

5

Core Build up

Core Preparation

6

Twin Luscent AnchorsProcedure – Simple Technique Review

4 5 6

1 2 3

Twin Luscent AnchorsCase Study

Restoring the Endodontically Treated Tooth with Fiber Reinforced Resin Posts

Howard E. Strassler, DMD, FADM, FAGDDepartment of Restorative DentistryDental SchoolUniversity of Maryland


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


Important points for post selection

• Posts must transmit light to eliminate gingival and

tooth shadowing

• Post should be tapered following the true shape of theroot 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 accommodatedifferent root canal diameters


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


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


Anchor Placement• Twin Luscent Anchor was

tried into the canal and length verified

• Canal was etched for 15 seconds


Rinsing and drying the canal

• Canal was rinsed using an endodontic irrigation syringe with water

• Canal was dried with a large paper point


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


Cementation of Twin Luscent• Twin Luscent Anchor painted

with adhesive

• Dual-cure composite resin cement syringe into the canal with a Needle Tube


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


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


All ceramic crown cementation • Preparation etched for

15 seconds, rinsed and dried

• Dentin primer painted on preparation


All ceramic crown cementation • Dual cure adhesive painted

on preparation • All-ceramic crown cemented

with dual-cure composite resin cement


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 AnchorsKits

LUT-K1, Twin Luscent Starter Kit15 anchors (assorted s, m, l)with all accessories

LUC-K3, Luscent Starter Kit15 anchors (assorted s,m,l)with all accessories

Refill Kits5 or 15 anchors (individual size only)Light transmitting Forms-to-Fit

at-a-glance - technique & clinical cases

Documents

teeththe twin luscent

crownfractured post

postcement post

pin drillremove post

fiberglassreinforced

forcevector of forcevector

large canals

rotary handpiece