VERSACRYL LABORATORY KIT

Biocompatible Intraoral Thermo Elastic Material

This unique acrylic forms the basis of an innovative denture system, so versatile, it allows the dental professional to apply more than a dozen new ways to improve retention, esthetics and comfort for the patient.

Critical parts of dental appliances are created to soften with heat and conform to the contours of soft and hard tissues. VERSACRYL softens in warm water and has a flexibility range between 50 and 95 degrees Celsius.

When inserted and adapted to the mouth, VERSACRYL will cool to body temperature and take on the desired rigidity to fulfill its new function. This process can be repeated over and over to ensure complete comfort for the patient.

VERSACRYL portions can be created to any acrylic denture or partial denture in different areas for different purposes:

• adaptations to tissues or lesions (postdam, etc.)
  
  
• to replace conventional clasps (also to construct gasket clasps)
  
  
• to utilize existing undercuts (lingual posterior submandibular or alveolar undercuts)
  
  
• over tauri or other anomalies
  
  
• as a heat sensitive reline, ranging from soft to hard
  
  
• to attach Versa-Locks sublingual wings (available separately)

Depending on which application is desired, VERSACRYL requires different rigidities to function optimally at body temperature and this feature needs to be controlled by the proportion of the two liquids (see directions for use).

The suggested ratio of the liquids is specified in drops in order to obtain the desired end result. Careful measurement is important and will also prevent waste of material.

SUGGESTED APPLICATIONS

On upper dentures:

• at the posterior palatal seal region (postdam)
• in the Hamular notch region
• into buccal undercuts of the maxillary tuberosity
• into any undercut on the alveolar ridge

On lower dentures:

• into undercuts below the retromylohyoid eminence (mandibular lingual posterior undercuts = submandibular fossa)
• in the pterygomandibular notch region
• into any undercut on the alveolar ridge
• in a layer below the posterior teeth to thermo-adjust the bite

On partial dentures:

Very effective acrylic partials can be designed, by combining several functional rigidities in critical areas of such denture:

• friction clasps on abutment teeth
• utilizing interproximal undercuts with a softer cushion
• gasket clasps to surround free-standing teeth.

In most cases when VERSACRYL is used to function as retention into undercuts, it is necessary for the patient to soak the denture with warm water before each insertion and before each removal.

Thermo Relines:

The consistency can be controlled to tailor the reline to each individual case, by adding or subtracting drops of Hardener, as explained in the directions for use. The reline can be re-adapted repeatedly. Especially practical on difficult lowers and partial relines. Can also be used as an alternative to tissue conditioning techniques (see self cure method).

HEAT CURE METHOD

Heat curing acrylic is always recommended over self cure, for it produces a more stable and impervious result. VERSACRYL additions can be obtained by double-packing the denture flask:

1. pack denture flask with pink denture acrylic
2. add a polyvinyl sheet and trail press
3. open flask and cut away areas to become mouldable
4. mix VERSACRYL acrylic following enclosed instructions
5. pack against monomer-primed denture acrylic
6. close flask, press and proceed as usual

SELF CURE METHOD

Self cure VERSACRYL can replace all heat cure applications, but certain techniques are more favourable for practical reasons:

• replacing a broken cast clasp on a partial denture
• adjusting or adding interproximal retention to a loose partial
• adding thermo relines as an alternative to tissue conditioning techniques
• attaching VERSACRYL-Lock sublingual wings to the lingual flange of a lower denture

Before applying self cure VERSACRYL:

1. always trim away at least 1,5mm of pink denture acrylic
2. slope and sharpen the edges and roughen the surface
3. prime well with monomer, preferably twice
4. mix self cure VERSACRYL following enclosed instructions
5. apply the material and shape with instrument or matrix
6. cure in a pressure cooker and finish as usual

DIRECTIONS FOR USE

This working kit contains 4 liquids and 1 powder :

• 2 bottles of heat cure liquid (A and B)
• 2 bottles of self cure liquid (A and B)
• 1 jar of polymer powder, used for both cures
  
  Following is a suggested schedule to mix the two liquids, in order to obtain the rigidity required for the application:

In a small mixing cup, add

1. from bottle A, the amount of drops indicated in column A
2. from bottle B, the amount of drops indicated in column B
3. stir both liquids together for about 10 seconds
4. from the polymer container C, while stirring, add 1.5 parts of powder to 1 part liquid, by weight
   
5. for heat cure: stir until thick enough to knead and pack against Hardener monomer-primed acrylic immediately (see heat cure method)
   
6. for self cure: stir while vibrating and quickly apply to existing Hardener monomer-primed acrylic (see self cure method). The more Hardener that is used in the mixture, the more rigid the end result becomes. If the obtained rigidity is not satisfactory, the amount of drops can be modified, but always adjust the liquid with the highest amount of drops and keep notes in the blank column.
   

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