Angelus Exacto Refill Pack

• Greater radiopacity: allows radiographic visualization
• Standardized burs with inactive tip: precise calibration of posts according to burs present in the kit; very thin cement layer
• High concentration of fibers: better mechanical properties
• Special glass fiber: excellent transmission of light
• Double taper: matches root canal shape
• Modulus of elasticity similar to dentin´s: lower risk of root fracture
• Silicone stop: identifies post size and indicates place for cutting
• Direct use (prefabricated): saves clinical time and decreases lab costs
• Longitudinal fibers: easy removal
• Versatility of sizes: indicated for most clinical cases

Exacto posts with high light transmission and double taper glass fiber intraradicular conical post. The fibers are inside a longitudinally arranged resin matrix, which ensures their high resistance to fracture under normal physiological conditions.

The translucency of fiber posts is a very controversial issue in the literature. Various studies have shown that the use of translucent glass fiber posts is favorable for the best aesthetic quality of the restoration.
The scientific studies show us that the idea that a translucent posts helps in the curing of resin cements is not correct. Glass fibers, despite being light transmitters, do not allow enough light energy for the complete curing of resin cements in the medial and apical areas of the canals, which can lead to unsuccessful cementation.

Exacto posts have the translucency needed for the favorable aesthetic reproduction of the restorations. The use of innovative fibers in combination with an appropriate polymer matrix confers translucency to the post and highly attractive aesthetic properties to the final restoration.

Indication : Support of restorations and prosthetic crowns

COMPOSITION :

Glass fiber ………………………..80%
Epoxy resin ………………………………………………..20%

Colour : Translucent

Modulus of Elasticity* (GPa) : 30-40

Flexural Strength* (MPa) : 1000-1430

• 5 x Exacto Posts

DIRECTIONS FOR USE :

A. ROOT CANAL PREPARATION

1. Select the pin using the template and the periapical x-ray of the tooth

2. Remove part of the root canal filling with heated instruments according to the predetermined depth. Leave at least 3 to 5 mm of obturation in the root apex due to the presence of accessories canals

3. Prepare the root canal with the matching drill of the selected post

EXACTO 0.5 – Drill 0.5 (purple) / EXACTO 1 – Drill 1 (white) / EXACTO 2 – Drill 2 (yellow) / EXACTO 3 – Drill 3 (blue)

4. Take a periapical radiograph to check the root canal preparation and filling. Excessive removal of gutta-percha may lead to endodontic failures

B. PREPARATION OF EXACTO FOR CEMENTATION

1. Check insertion and position of the post in root canal. Slide the post stop towards the area chosen for cutting (at least 2 mm from the opposing tooth occlusal surface)

2. EXACTO should only be cut with diamond burs on high speed under water irrigation. Pliers and scissors should not be used: smashing of post leads to loss of its mechanical properties

3. Clean EXACTO with alcohol and dry with air . And apply a silane agent (SILANO ANGELUS®) and let it dry for 1 minute

4. Apply the chemical adhesive FUSION-DURALINK® CATALYST ANGELUS® according its instructions

C. CEMENTATION

1. Wash the root canal with an air/water spray and dry with air and absorbent paper points

2. Etch the root canal for 15 seconds with 37% PHOSPHORIC ACID ANGELUS®

3. Wash the root canal and dry with air and absorbent paper points Apply primer FUSION-DURALINK® ANGELUS® and wait 1 minute.

4. Apply ANGELUS® FUSION-DURALINK® CATALYST according to the instructions. The adhesive components must not be mixed before application. They are polymerized chemically without light curing

5. Spatulate the resinous cement selected* and fill the conduit. 6. Insert the post in the canal, remove the excess of cement and wait for its polymerization. If the resin cement is dual-cured, light-cure it now . L Zinc-phosphate and glass ionomers (conventional and resin-modified) may also be used for the cementation of posts, but their properties are inferior to those of composite resin cements. Auto-adhesive cements eliminate the needs for the steps of acid conditioning and adhesive application.

D. BUILDING THE CORE (CORONAL PART)

1. Build the core with a restorative composite resin (hybrid, microhybrid or any specific composite resin for cores) or with REFORCORE® ANGELUS®. REFORCORE® is a prefabricated glass fiber core, specially developed for the technique of direct posts