What are the three types of custom trays?

What are the three types of custom trays?

Custom Tray

• Perforated trays.
• Non-perforated trays.
• Rim-lock trays (water-cooled and non-water cooled)

What are triple trays used for?

The triple tray technique is a very efficient method for taking impressions. The impression taken prior to preparing the teeth can be utilized to fabricate both the temporary restoration and then the final impression, which includes the opposing occlusion.

What are the different types of trays and what are they used for dental?

TYPES OF IMPRESSION TRAYS

• Edentulous metal perforated impression trays (Figure 11.2a)
• Edentulous plastic perforated impression trays (Figure 11.2b)
• Dentate metal perforated impression trays (Figure 11.2c)
• Dentate plastic perforated impression trays (Figures 11.2d–11.2e)
• Universal sectional impression tray (Figure 11.2f)

Which material is used in custom tray?

Custom trays are made up of auto-polymerizing Polymethyl-methacrylate (PMMA) resin, thermoplastic material and visible-light curing resin.

How do I choose a tray for complete dentures?

Factors effect in selection of stock tray:

1. The type of impression material used in the primary impression. procedure.
2. Size of the arch.
3. Form of the arch.
4. The stock tray must cover all the anatomical landmarks.
5. Stock tray should give a sufficient space to impression.

What are the types of special tray?

Types of special tra 1-spaced tray with wax(with or without stoppers) 2-closed fitted special tray without wax. 1-The cast should be soaked in water. 2-Severe undercuts should be blocked out using wax. 3-The borders of the special tray and the relief areas should be marked.

What are special trays?

Special Tray A special tray is defined as, “A custom made device prepared for a particular patient which is used to carry, confine and control an impression material while making an impression”.

What is special tray in dentistry?

A special tray is an impression tray custom made for an individual patient by a denturist (dental technician), usually made from acrylic, such as polymethyl methacrylate, or shellac. A stock tray is used to make a preliminary impression, from which a model can be cast.

What is the difference between stock tray and special tray?

1- Stock tray: used for primary impression procedure. 2- Special tray or individual tray which is used for final impression procedure. & support it in the correct position while it is hardening. This type of the trays can be used for several patients & used for making primary impression.

What is the material used in special tray?

Materials used for construction of special tray It can be constructed from: 1. Cold cure acrylic resin or self-cure acrylic resin or auto-polymerizing acrylic resin (more common).

How will you select service tray?

1. Selecting the Service Tray:

1. All trays must be clean and tidy, free from chips.
2. Required items for preparing the tray are 1) Service tray 2) A clean tray cloth.
3. Check that the tray is clean and dry.
4. Check that the tray is well polished.
5. Check that the tray cloth is clean and free of stains, tears or holes.