Post & Core Build-Up Materials: Composites, Intradicular Posts & More

Angelus Reforpost fiber glass - Retentive shape, parallel intraradicular post with conical tip.

High retentiveness

The cylindrical, parallel shape and tapered apex of the Glass Fiber Reforpost make them very retentive. The additional circumferential mechanical retentions of the posts increase the area for adhesion of the cement.

Less wear on the tooth structure

The use of Glass Fiber Reforpost in combination with the techniques of adhesive cementation allows for a smaller removal of dental structure, without the need for removal of intraradicular or coronal retentive areas. The tapered apical portion of the post also provides for less wear of dentin in the apical region.

Identification colors

Better identification and agility in the work

Standardized for Largo burs

Benefits

• Great retention
• Allows radiographic visualization
• Easy removal
• Easy to adapt
• Great mechanical properties
• Lower risk of root fracture
• less tissue removal in apical third of root canal
• Saves clinical time and decreases lab costs

Time and cost saving

The technique of making prosthesis with pre-fabricated Fiber/Metal posts allows for creation of the post/core in a single session, eliminating steps and laboratory costs

Reforpost Metallic - Passive tapered intraradicular post system

Reforpost Metal - Surface texture

Angelus Metal post serrated or roughened surface is more retentive than a smooth one. Controlled grooving of the post and root canal  also increases the retention of the post

Reforpost Metal- Passive post system

It must be cemented passively. Active Screwable posts are harmful to the dental structures

Superior retention is observed in active THREADED POST, but it exerts a greater amount of stress on the remaining tooth structure  which increase the potential for root fracture.

Luting agents for post cementation

Currently there are 3 types of cement available for post cementation Resin cements, GIC  & zinc phosphate.

Self cure resin cement is the material of choice for post cementation as it has highest compressive strength along with negligible solubility. GIC bonds chemically with the dentin and is not technique sensitive. The most traditional of all cements is zinc phosphate, which has adequate physical properties, economic and easy to use as of which it remains as  choice of material  for post cementation for around decades.

Factors affecting retention of post

• Post space preparation 
• Luting Agent
• Post surface Texture
• Post Diameter
• Post Length

Benefits

• Saves clinical time and decreases lab costs
• Easy to use
• Easy to adapt
• No generation of stresses
• Excellent retention for the cement

Time and cost saving

The technique of making prosthesis with pre-fabricated Fiber/Metal posts allows for creation of the post/core in a single session, eliminating steps and laboratory costs

Product Description

Utilizing the latest nanoparticle technology, DiaFil combines the aesthetic advantages of micro-filled composites with the strength and durability of hybrid composites. It creates beautiful and long-lasting restorations with a glossy shine that maintains its brilliance over time.

Flexural Strength
 The flexural strength of a material is defined as its ability to resist deformation and breakage under load. Flexural strength is the value obtained when the material breaks. This test combines the forces found in compression and tension. DiaFil shows a high level of flexural strength between 130 to 150 Mpa

Compressive Strength 
Compressive strength is especially important because it is related to masticating forces. Simultaneous forces are applied to the opposite ends of the sample length vertically until the sample fractures or is deformed. The material failure is a result of shear and tensile forces. Dia Fil has Compressive Strength ranging from 250 and 300 Mpa

Flexural Modulus 
Flexural modulus is a convenient measure of composite stiffness. DiaFil is formulated with a broad range of particle sizes which results in its higher flexural modulus (≈13-14 Gpa)

Shrinkage 
Polymerization shrinkage directly affects the long-term stability of a composite resin. When the composite’s density changes and the overall volume reduce, the internal stress at the margins of restoration can lead to marginal leakage and 
secondary caries. DiaFil has unique fillers to reduce shrinkage (Polymerization Shrinkage 0.3% - 1%)

Key Features

• Excellent Handling: Easy to place, does not slump, and provides good marginal adaptation.
• High Flexural Strength: Ranges from 130 to 150 MPa, offering superior resistance to bending stresses.
• Superior Compressive Strength: Between 250 and 300 MPa, ensuring excellent load-bearing capacity.
• Fast Polymerization: Can be polymerized in only 20 seconds for efficient clinical procedures.
• Outstanding Versatility: Suitable for both anterior and posterior restorations.
• Superior Physical Properties: Offers high wear resistance and fracture toughness for durable restorations.
• Reduced Polymerization Shrinkage: Unique fillers minimize post-operative sensitivity and secondary cavities caused by marginal leakage.
• High Strength: Exhibits excellent fracture toughness and high tensile and compressive strength for long-lasting results.
• Easy Finishing and Polishing: Adapts well to tooth structure, allowing a smooth and polished finish.
• High Radiopacity: Ensures clear visibility in radiographic evaluations.

Luxacore - Premium composite for core build-up and root post cementation

Cuttability like Dentin

LuxaCore Z is DMG’s premium composite for core build-ups and post cementation. LuxaCore Z provides dentine-like cuttability, which ensures controlled substance removal and a precise preparation margin. LuxaCore Z gives you optimal guidance control of the bur.

At the transitions between dentine and LuxaCore Z you will not notice any difference. This tactile stability permits groove-free preparations without any undercuts, presenting ideal conditions for the dental technician to perform precise work.

It is a Critical property in resin core materials:-

• A dentin-like cutting rate and feel is highly desirable
• “Substance Removal” tests determine a material’s cutting rate
• LuxaCore Z Dual has a cutting rate virtually identical to natural dentin

Increased compression strength and polishing values thanks to DMG’s patented nanotechnology

Benefits of Nano Particles

Superior values