Podcast
Questions and Answers
What is the primary purpose of using a labial flange addition to the open-face denture?
What is the primary purpose of using a labial flange addition to the open-face denture?
- To enhance the aesthetics of the denture
- To facilitate easier cleansing
- To provide additional support to the denture
- To improve the fit of the denture (correct)
What is a key precaution when fabricating the alginate mold?
What is a key precaution when fabricating the alginate mold?
- Using a flexible container to ensure adaptability
- Selecting a soap container that is prone to distortion
- Pouring the resin before the alginate sets
- Keeping the mold’s box rigid to prevent distortion (correct)
Why is silicone impression material recommended for reline impressions?
Why is silicone impression material recommended for reline impressions?
- It is easier to remove from the mold
- It provides accurate recording of OVD and Centric Relation (correct)
- It demonstrates more flexibility and adaptability
- It is more cost-effective than other materials
What potential problem arises from an indented alginate impression of the ridge?
What potential problem arises from an indented alginate impression of the ridge?
What is emphasized for selecting stock teeth during template fabrication?
What is emphasized for selecting stock teeth during template fabrication?
What is the primary purpose of producing temporary duplicate dentures?
What is the primary purpose of producing temporary duplicate dentures?
Which of the following techniques is NOT mentioned for producing a template for a duplicate denture?
Which of the following techniques is NOT mentioned for producing a template for a duplicate denture?
During the first visit for denture duplication, which of the following is NOT performed?
During the first visit for denture duplication, which of the following is NOT performed?
What material is typically used to create a mould of the old denture?
What material is typically used to create a mould of the old denture?
Which step is performed after the alginate has set and the base has been trimmed?
Which step is performed after the alginate has set and the base has been trimmed?
What type of container is mentioned for supporting the mould of the denture?
What type of container is mentioned for supporting the mould of the denture?
What modification might be implemented based on a patient's adaptation to a temporary duplicate denture?
What modification might be implemented based on a patient's adaptation to a temporary duplicate denture?
Which material may be used to fabricate teeth for temporary duplicate dentures?
Which material may be used to fabricate teeth for temporary duplicate dentures?
What is indicated when a patient with old dentures wants new ones that have similar features?
What is indicated when a patient with old dentures wants new ones that have similar features?
What characteristic of the old dentures indicates alveolar ridge resorption?
What characteristic of the old dentures indicates alveolar ridge resorption?
Which step is performed after adjusting the occlusal plane level in the fabrication of new dentures?
Which step is performed after adjusting the occlusal plane level in the fabrication of new dentures?
What material is used to produce the replica of teeth in the duplication process?
What material is used to produce the replica of teeth in the duplication process?
How is the old denture utilized during the tooth arrangement of the new dentures?
How is the old denture utilized during the tooth arrangement of the new dentures?
What is the purpose of the intra-oral wax try-in during the denture duplication process?
What is the purpose of the intra-oral wax try-in during the denture duplication process?
During the agar-agar duplication technique, what is used to suspend the dentures?
During the agar-agar duplication technique, what is used to suspend the dentures?
What happens after the agar is set in the duplication technique?
What happens after the agar is set in the duplication technique?
What is the purpose of cutting sprue holes into the posterior border of the alginate mold?
What is the purpose of cutting sprue holes into the posterior border of the alginate mold?
During the second visit, what procedures are typically performed?
During the second visit, what procedures are typically performed?
What material is used to modify the denture borders in the soap container technique?
What material is used to modify the denture borders in the soap container technique?
What is the role of the elastic bands during the duplication process?
What is the role of the elastic bands during the duplication process?
What occurs after the resin is poured into the mold and allowed to process in a pressure pot?
What occurs after the resin is poured into the mold and allowed to process in a pressure pot?
Which of the following steps must be completed before the dentures are polished?
Which of the following steps must be completed before the dentures are polished?
Under what conditions is the resin processed in a pressure pot?
Under what conditions is the resin processed in a pressure pot?
What is the purpose of the try-in of the dentures during the second visit?
What is the purpose of the try-in of the dentures during the second visit?
What is the primary purpose of creating a duplicate denture?
What is the primary purpose of creating a duplicate denture?
Under what circumstances should a denture not be duplicated?
Under what circumstances should a denture not be duplicated?
What is one of the indications for duplicating a denture?
What is one of the indications for duplicating a denture?
Which of the following is NOT a common aim of denture duplication?
Which of the following is NOT a common aim of denture duplication?
What evaluation must be done before deciding to duplicate a denture?
What evaluation must be done before deciding to duplicate a denture?
Which factor is NOT typically considered when evaluating a denture for duplication?
Which factor is NOT typically considered when evaluating a denture for duplication?
Why might duplicate dentures be especially beneficial for older patients?
Why might duplicate dentures be especially beneficial for older patients?
What is a potential benefit of duplicating a denture for research purposes?
What is a potential benefit of duplicating a denture for research purposes?
Flashcards
Denture Duplication
Denture Duplication
The process of creating an exact copy of a denture using a mold, typically for relining or repairing.
Soap Container
Soap Container
A special container used for denture duplication, resembling a soap dish, providing a stable base and a tight seal for the alginate mold.
Alginate (Lower Half)
Alginate (Lower Half)
A material used to create a mold of the denture, typically used for the lower half of the mold in denture duplication.
Alginate (Upper Half)
Alginate (Upper Half)
A material used to create a mold of the denture, typically for the upper half of the mold in denture duplication.
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Acrylic Resin
Acrylic Resin
A hardened resin material that serves as the framework for the duplicated denture.
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Denture Teeth
Denture Teeth
The replacement tooth components for the duplicated denture, typically made from a pre-manufactured mold.
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Sprue Holes
Sprue Holes
A special opening created in the alginate mold to allow the resin material to flow into the mold and solidify, forming the duplicate denture.
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Pressure Pot Processing
Pressure Pot Processing
A process where pressure is applied to the mold containing the curing resin, ensuring even distribution of resin and a solid, durable duplicate denture.
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Denture Duplication Technique
Denture Duplication Technique
A method for creating custom dentures by starting with a wax model, taking an impression of the patient's mouth, and pouring acrylic resin to form the denture base and teeth.
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Open-Face Denture
Open-Face Denture
A denture base that lacks a flange that covers the labial (front) area of the mouth.
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Temporary Denture
Temporary Denture
A temporary denture made from acrylic resin.
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Rigidity of the Box
Rigidity of the Box
The container used to hold the alginate mold for creating denture templates needs to be rigid to prevent distortions.
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Distortion of the Alginate Ridge
Distortion of the Alginate Ridge
The alginate impression of the patient's gum ridge should be checked to ensure it doesn't indent the wax template, which can lead to an inaccurate denture base.
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Silicon Putty
Silicon Putty
A material used in the denture duplication process to create molds for the new dentures. It sets quickly, allowing for an accurate impression of the existing denture's shape.
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Shellac Record Base
Shellac Record Base
A thin sheet of wax used as a base on which the replica teeth are arranged in the denture duplication process.
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Manipulation of the Wax Replica
Manipulation of the Wax Replica
The process of making adjustments to the wax replica dentures, often correcting errors in the original dentures, including the vertical dimension (OVD) and occlusal plane.
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Upper Reline Impression
Upper Reline Impression
A procedure to determine the correct vertical dimension (OVD) for the new dentures during the duplication process. This is done by taking an impression of the upper jaw after adjusting the wax replicates.
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Articulator
Articulator
A device used to simulate the movement of the jaw and help dentists correctly position the teeth in the new dentures.
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Denture Duplication Technique 'The Agar-Agar'
Denture Duplication Technique 'The Agar-Agar'
A method of producing duplicate dentures where existing dentures are suspended in a container filled with molten agar. After the agar sets, the dentures are removed, leaving behind the mold.
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Metal Rod
Metal Rod
A thin rod that holds the dentures suspended in the agar container during the denture duplication process.
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Temporary Duplicate Dentures
Temporary Duplicate Dentures
Temporary dentures made to help patients gradually adapt to changes, like an increased bite height or a new denture shape.
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Denture Duplication Technique: Molding
Denture Duplication Technique: Molding
This method uses an elastic material like alginate to create a mold of an old denture.
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Denture Duplication Technique: Duplicating Flask Method
Denture Duplication Technique: Duplicating Flask Method
A technique used to make duplicate dentures. It involves submerging the old denture in alginate inside a rigid container, like a special flask.
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Denture Duplication Technique: Modified Denture Flask Method
Denture Duplication Technique: Modified Denture Flask Method
A technique where a special flask (like a container for pouring) is modified to hold the old denture and alginate for molding.
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Denture Duplication Technique: Pour Resin Flask Method
Denture Duplication Technique: Pour Resin Flask Method
A technique using a regular flask for pouring resin to create a mold of the old denture. Pouring resin into the flask will solidify and create a mold.
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Denture Duplication Technique: Cup Flask Method
Denture Duplication Technique: Cup Flask Method
A technique used to build a duplicate denture, where alginate is poured into a special container shaped like a cup to mold the old denture.
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Denture Duplication Technique: Soap Container Method
Denture Duplication Technique: Soap Container Method
A technique using soap containers (like containers for making soap) to create molds for duplicate dentures using alginate.
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Denture Duplication Technique: Agar Container Method
Denture Duplication Technique: Agar Container Method
A technique employing agar (a jelly-like substance) to create molds for duplicate dentures.
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What is a duplicate denture?
What is a duplicate denture?
A duplicate denture is a second denture made as a copy of the original denture.
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What is the purpose of duplicate dentures?
What is the purpose of duplicate dentures?
Duplicate dentures maintain the original contours, ensuring familiar feel and function. They're also called 'copy dentures', 'template dentures', or 'replica dentures'.
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When are duplicate dentures most helpful?
When are duplicate dentures most helpful?
Duplicate dentures help older patients adapt more easily as they feel similar to their existing denture. They're especially beneficial for patients who have difficulty adjusting to new dentures.
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When should a denture be duplicated?
When should a denture be duplicated?
Duplicate dentures are made when the existing denture has satisfactory esthetics, function, and fit. They are used when the existing denture needs a new base, has worn teeth, or there's a need for a spare in case of damage.
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What are the advantages of duplicate dentures?
What are the advantages of duplicate dentures?
Duplicate dentures ensure smooth transitions for the patient, minimizing adaptation challenges. They're made to closely resemble the original denture for a comfortable transition.
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What is a common application for duplicate dentures?
What is a common application for duplicate dentures?
Duplicate dentures are ideal for replacing immediate dentures. They ensure a familiar fit and feel, reducing the learning curve for the patient.
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How else are duplicate dentures used?
How else are duplicate dentures used?
Duplicate dentures are often used to replace lost dentures or for research purposes. They offer a convenient way to evaluate different occlusal relationships without altering the original denture.
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What needs to be done before duplicating a denture?
What needs to be done before duplicating a denture?
Before duplicating a denture, a thorough evaluation is done to confirm its suitability. Factors like aesthetics, fit, function, and occlusal relationships are carefully assessed to ensure the original denture warrants duplication.
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What factors are considered during the evaluation of an existing denture?
What factors are considered during the evaluation of an existing denture?
The existing denture should be evaluated for factors such as aesthetics, phonetics, accuracy of fit, and occlusion. This helps determine the suitability of the original denture for duplication.
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Summary: What is the best application for duplicate dentures?
Summary: What is the best application for duplicate dentures?
Duplicate dentures are usually preferred for older patients and for situations where maintaining a familiar feel for the patient is crucial. They are also used for replacing damaged or lost dentures.
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Summary: How are duplicate dentures used by dentists?
Summary: How are duplicate dentures used by dentists?
Duplicate dentures are often used to replace old or damaged dentures or for research purposes. They represent a practical way to create a copy of an existing denture, ensuring familiar function and appearance.
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Complete Denture Duplication
- Definition: A duplicate denture is a second denture, intended as a copy of the original. It's also known as a copy denture, template denture, or replica denture.
Aims
- Transfer of Contours: Transferring the contours from the old to new dentures for maintaining neuromuscular control.
- Modifications: Making only necessary adjustments to the old denture's shape to correct fit issues (patient complaints), as determined by the operator. This may involve adjusting the OVD (occlusal vertical dimension) and replacing worn teeth.
- Minimizing Adaptation: Creating a new denture that closely resembles the original to minimize fitting problems for the patient.
- Uniting Production Stages: Combining stages of the production process for faster and more efficient clinical production, fitting within a few visits.
Indications
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Replacement for Older Patients: Creating replacements for older patients who are accustomed to their current dentures but have problems with fit or material deterioration. It's challenging to adjust to dentures with different surface contours.
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Renewal of Denture Base: Producing a duplicate denture with a new, improved denture base material to replace a damaged or stained denture. This will give a completely new appearance.
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Spare Dentures: Creating an extra denture in case of a broken or missing original denture for use during necessary repair or relining. Patients want to avoid being without functional dentures during repair procedures.
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Experimental Occlusal Changes: Creating a duplicate denture for experimental adjustments to the occlusal relationship of dentures (clinical/research reasons). The duplicate denture is used without impacting the original.
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Immediate Denture Replacement: Replacing immediate dentures with a new fitted one.
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When to Duplicate a Denture: Only when evaluation of the denture reveals no issues with aesthetics, psychology, and physiology of the patient
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Evaluation procedure: Evaluation of existing denture: fractures, craze lines, missing or replaced teeth, dental aesthetics, pronunciation accuracy and vertical/centric relationships
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Temporary Duplicate Dentures: Often produced if it is not clear if the patient can adapt well to the modifications, perhaps with gradual changes to occlusal vertical dimension. The costs are lower, and it can be completed in less clinical and laboratory time. Once successfully adapted, it can then be copied and used to produce a permanent one.
Denture Duplication Techniques
- Modified Denture Flask Method
- Duplicating Flask Method
- Pour Resin Flask Method
- Cup Flask Method
- Soap Container Method
- Agar Container Method
Denture Duplication Technique 'The Duplicating Flask'
- First Visit: Making a duplicate of the old denture from auto-polymerizing resin. Recording of centric jaw relation and selection of shade, size and form of denture teeth. The dentist and patient may modify the selections if the older duplicate is unacceptable.
- Laboratory Procedures: Making impressions of the dentures (using alginate) in a rigid container (e.g., a duplicating flask, modified denture flask or a soap container).
Waxed/Auto-Polymerized Dentures
- Wax or Auto-Polymerized Dentures: The duplicate dentures are recovered from the molds.
- Waxed Teeth/Acrylic Bases: Templates with waxed teeth and self-cured acrylic resin bases are created.
- Centric Relation Record: A record of centric relation is taken after setting the waxed teeth to account for the occlusal vertical dimension (OVD).
Denture Duplication Technique 'The Silicon Putty'
- Patient Case: An 80-year-old patient with 25-year-old dentures with reduced occlusal vertical dimension (OVD).
- Patient Satisfaction: The patient was happy with the existing denture appearance wanting similar features on the new denture
Problem Areas and Solutions
- Rigidity of the Box: Use rigid containers to avoid distortion of the alginate and acrylic resin template.
- Alginate Ridge Distortion: Check the impression of the alginate ridge to prevent problems like indenting.
- Impression and Jaw Relation Records: Careful, thorough procedures, and the use of silicone impression materials for obtaining reline impressions.
- Tooth Position and Tissue Contours: Careful positioning and placement of the denture teeth to facilitate neuromuscular control.
Additional Techniques:
- Soap Container Technique
- Agar-Agar Technique
These notes outline several aspects of denture duplication, highlighting the purposes, techniques, and considerations.
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