Injection Moulding Technique: Easy Aesthetics, Predictable Outcome
Hands-on course
08 Nov 2019, 09:00 - 18:00 Dubai | UAE | InterContinental Hotel | DFC Area of interest: General Dentistry

Abstract Morning

Anterior restorations with high esthetic demands are a common challenge to most clinicians in their daily practice. Traditional layering techniques require training, experience and skills together with long clinic times. Unfortunately the this technique often gives unpredictable results with possible re-works and unhappy patients. The alternative is to choose for indirect restorations which comes with superior aesthetics but require an extra clinical session and result in higher costs related to the laboratory works.

The aim of this lecture is to present an easy and predictable technique that will enable clinicians to create direct restorations as aesthetic as indirect ones, but created in a quicker and more affordable way while using less invasive preparations.

The injection moulding technique is a novel process ideal to treat wear cases and to recreate complex morphologies in both the anterior and posterior regions with optimal aesthetics. 

The use of a transparent silicone material and an injectable resin composite with high flexural strength and wear resistance make it possible to translate a diagnostic wax-up into composite restorations with high strength and gloss.

The transparent silicone allows you to check every little detail and prevents the formation of an oxygen inhibition layer thus facilitating the final polishing. Furthermore it’s possible to control the injection while treating several teeth simultaneously. The technique even allows the surface texture to be copied from the wax-up, which results into a natural smile with a life-like appearance whilst saving valuable chair-time.

Course Objectives

  • Learn how to create highly esthetic restorations on easy and predictable way
  • Optimal ways for the fabrication of a diagnostic wax-up
  • Understand the rules related to the fabrication of a transparent VPS matrix
  • Selection of appropriate resin composite and which features they should have
  • Clinical cases detailing the entire procedure

Step by Step: Description of the technique

  1. Evaluate Initial situation and patients expectations
  2. Impression taking and Wax-up made by the lab technician
  3. Fill a solid (non-perforated) impression tray with EXACLEAR (Transparent silicone material)
  4. Place the EXACLEAR impression onto the wax-up model and wait to set
  5. Remove the silicone impression from the tray
  6. Drill a hole through the silicone key with a needle shaped bur
  7. Check that the hole is just big enough to fit the composite syringe tip
  8. Isolate the adjacent teeth to avoid that the injected composite bonds to them
  9. Etch the tooth
  10. Apply a bonding agent following the manufacturer’s instructions
  11. Light-cure
  12. Place the silicone key in the mouth and inject G-ænial Universal Injectable into the mould through the silicone hole
  13. Light-cure through the silicone key. 
  14. Remove the key and remove excess with a blade
  15. Polish with burs and strips for interproximal areas
  16. Finish with polishing rubber wheels and gout hair brush with diamond paste

Abstract Afternoon

Reconstructions of posterior teeth with deep caries lesions are still a challenge for restorative dentistry.

Amalgam has been the material of choice for restoring posterior teeth for more than 100 years. It became the dental restorative material of choice due to its low cost, ease of application, strength and durability. With the increasing awareness on global issues, it was signed in 2013 the Miamata Convention with the commitment to reduce the use and emission of mercury.

An EU-wide ban on the use of mercury in the dental fillings of children and pregnant women came into effect in 2109. The aim of the ban is to protect human health at an early stage of development.

With the significant advances in restorative materials and bonding systems, resin composites, glass ionomers and indirect restorations and now, recently a new category of restorative materials: glass hybrids presented themselves as great alternatives to amalgam.

The choice of restoratives requires understanding of its characteristics and indications for use to provide great performance, therefore we will demonstrate 2 different aesthetics solutions for amalgam replacement/restorations when you have a hidden caries or when an open big cavity is present.

Course Objectives

  • Understand the possible solutions for amalgam alternatives in modern dentistry
  • Cavity design for long last posterior restorations
  • How to perform highly aesthetics restorations with glass hybrid materials 
  • Learn how to combine strength and flexibility to preserve the tooth structure
  • Discover possibilities for restoring wide class II weakened teeth with strength and aesthetics

Step by Step: Description of the technique

Stamp Technique

  1. Copy the tooth anatomy with a liquid dam
  2. Prepare the cavity for restoration
  3. Restore with the Glass Hybrid material
  4. Design the occlusal surface with the stamp
  5. Finishing
  6. Apply the resin coating and polymerize

Wide class II restoration

  1. Cavity design
  2. Matriz placement
  3. Bonding system + polymerization
  4. Restoration with the fibre reinforced bulk material
  5. Cover with a injectable composite
  6. Finishing and polishing

Agenda

9:00 – 10:00
Introduction: Objectives and explanation of the technique
10:00 – 10:30
Impression wax up
10:30 – 10:45
Coffee Break
10:45 – 12:00
Injection moulding technique
12:00 – 13:00
Finishing and polishing
13:00 – 14:00
Lunch
14:00 – 15:00
Class I with stamp technique
15:00 – 16:00
Class I with stamp technique
16:00 – 17:00
Combining strength and aesthetics in wide Class II restorations
17:00 – 18:00
Combining strength and aesthetics in wide Class II restorations


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