Prosthodontics Quiz on Soft Lining Materials

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Questions and Answers

What condition can lead to unbearable pain underneath the prosthesis even if the prosthesis's length, tooth arrangement, occlusion, stability, and adaptation are adequate?

Weak mucosal tissue structure

Insufficient adjustment of occlusion

Improper fitting of the prosthesis

Excessive resorption of the alveolar ridge (correct)

What happens to the thickness of the mucosa in cases of excessive resorption of the alveolar ridge?

It becomes fibrous and rigid

It decreases due to resorption (correct)

It increases significantly

It becomes unchanged

After which procedures are prostheses delivered to patients?

Implant placement and healing

A final polish and necessary adjustments (correct)

Initial fitting and radiographic evaluation

Patient consultation and planning

What aspect does NOT affect the discomfort experienced with a prosthesis during chewing?

Patient's pain tolerance (D) Signup and view all the answers

What is primarily responsible for the discomfort related to the prosthesis despite proper adaptations?

Adequate occlusion but insufficient mucosal support (C) Signup and view all the answers

Which material is classified as a soft lining material that polymerizes at room temperature?

Room Temperature Polymerizing Silikon-based (C) Signup and view all the answers

Which of the following is NOT a type of soft lining material mentioned in the classification?

Thermoplastic Elastomers (C) Signup and view all the answers

What is the primary use of acrylic and silicone-based soft lining materials?

Most commonly used soft lining materials today (B) Signup and view all the answers

Which class of materials includes both room temperature and heat polymerizing options?

Silikon Elastomers (C) Signup and view all the answers

What classification does soft acrylics fall under?

Soft Acrylics (D) Signup and view all the answers

What is one condition in which immediate prosthesis application should be postponed for 1-2 weeks?

Excessive edema due to traumatic extractions (C) Signup and view all the answers

Which of the following patients should have their immediate prosthesis application delayed for 1-2 weeks due to health conditions?

Patients with acute kidney and heart disease with poor oral hygiene (A) Signup and view all the answers

How long should the prosthesis application be postponed for patients undergoing radiotherapy?

At least 1 year (B) Signup and view all the answers

Which of the following is NOT a reason for delaying immediate prosthesis application?

General dental health status with no immediate concerns (D) Signup and view all the answers

What common misconception about immediate prosthesis application can lead to incorrect judgments?

Immediate prosthesis can be applied without delay in all patients. (D) Signup and view all the answers

What is the primary purpose of grinding the surface of a prosthesis in clinical practice?

To accommodate the tissue conditioner material (C) Signup and view all the answers

Which material is necessary to prevent unwanted adhesion of the tissue conditioner material to certain areas?

Isolation material (C) Signup and view all the answers

How thick should the surface be ground to accommodate the tissue conditioner in clinical applications?

2 mm (A) Signup and view all the answers

In clinical settings, what is a potential consequence of not using isolation material when applying tissue conditioner?

Uncontrolled adhesion to undesired areas (B) Signup and view all the answers

What aspect must be considered when applying a tissue conditioner material in clinical practice?

Surface preparation and isolation of certain areas (A) Signup and view all the answers

What is a key requirement for the success of immediate prostheses?

The prosthesis must be fitted immediately after tooth extraction. (C) Signup and view all the answers

What does the term 'immediate removable prostheses' refer to?

Prostheses that are placed in the mouth immediately following the extraction of teeth. (D) Signup and view all the answers

Which base material demonstrates a stronger structural bond with acrylic bases?

Acrylic-based soft liners (A) Signup and view all the answers

During which phase are immediate prostheses prepared for patients?

Prior to tooth extraction. (D) Signup and view all the answers

Which of the following statements regarding fungal growth is accurate?

Silicone-based soft liners generally lead to more fungal types growing. (D) Signup and view all the answers

What is a fundamental difference between silicone and acrylic-based soft liners regarding their bonding?

Acrylic-based materials bond better to acrylic bases. (D) Signup and view all the answers

Which of the following is NOT a characteristic of immediate prostheses?

They are designed to stay in place for long periods without adjustment. (D) Signup and view all the answers

How are immediate prostheses typically tailored for patients?

Through measurement as part of the extraction process. (B) Signup and view all the answers

In terms of material characteristics, which assertion holds true about silicone-based liners?

They contribute to increased fungal growth. (A) Signup and view all the answers

Considering the material properties compared, which characteristic is noted for acrylic-based soft liners?

They provide a better bond with acrylic base plates. (A) Signup and view all the answers

Study Notes

Immediate Dentures

Immediate dentures are dentures placed immediately after tooth extraction.
Four treatment options exist for patients losing all their teeth:
- Extraction of all teeth, waiting 6-8 months for extraction sites to heal, then creating definitive dentures.
- Converting existing partial dentures to immediate full dentures.
- Creating immediate removable dentures.
- Placing implants and then fitting immediate dentures supported by implants.

Stress Reducing Materials for Complete Dentures

Conditions for success of immediate dentures:
- Maintain a healthy relationship between the mouth and surrounding tissues.
- Restore chewing function.
- Maintain aesthetics.
- Protect supporting tissues.
- Fully restore speech, breathing, and digestive functions.
Benefits of immediate dentures:
- Avoid alveolar bone resorption due to the immediate application of the denture.
- Preserve the patient's lost function and stimulate bone tissue.
- Halt the onset of oral bleeding while promoting wound healing and blood clotting.
- Allow improved contours of the alveolar bone.
Drawbacks of immediate dentures:
- Lab-fabricated dentures cannot precisely duplicate the tooth, surrounding tissue, and bone form.
- Immediate dentures cause more tissue irritation.
- These are more difficult to manage compared to other types of dentures, but this problem may likely resolve with appropriate aftercare.
- Patients with various medical conditions like anemia, blood diseases, kidney failure, cardiovascular diseases, and diabetes should avoid immediate dentures.
- Difficult to make a precise centric relation record in post-extraction cases.
- Aesthetical issues may arise during use as the prosthesis is not fabricated and tried in prior to installation into the patient's mouth, unlike other denture types.
Conditions for postponing immediate dentures:
- Post-extraction swelling caused by trauma.
- Patients with acute kidney or heart problems.
- Those with poor oral hygiene should delay immediate prosthesis placement.
- Radiotherapy patients should delay their immediate prosthesis for at least a year.
Essential Considerations in Diagnosis and Treatment Planning:
- Informing the patient about the denture responsibilities.
- Explaining limitations and challenges of the procedure to the patient (written documentation if required).
- Advising the patient about the planned relining or replacement of the dentures in around six months.

Classification of Immediate Dentures

A systematic breakdown of types of immediate dentures (image shows types).

Types of Complete Immediate Dentures

Conventional full immediate dentures.
Conventional partial immediate dentures.
Open-faced immediate dentures.
Closed/half-closed vestibulum immediate dentures.

Advantages of Open-Vestibular Immediate Dentures

Correct positioning of the teeth.
Easy positioning of the denture base.
Eliminates the need for tissue adjustments.

Disadvantages of Open-Vestibular Immediate Dentures

Problems with retention and support.
Problems with maintaining oral aesthetic harmony.
Potential for complications resulting from inadequate oral bone structure to maintain support and retention.

Closed/Half-Closed Vestibular Immediate Dentures

Retention and support of these dentures are elevated.
The denture base design is more refined.
These types are sometimes better for patients.

Delayed (or Delayed-Immediate) Dentures

Dentures are fabricated after a healing period for the mouth (1-2 days following extraction).
The patient receives a trial prosthesis at this stage, which will help them acclimate to the new dentures.

Controlled (or Stepwise) Immediate Dentures

The process is done in steps so that patients are not inconvenienced.
The procedure is conducted in stages, first by extracting the back teeth.
This way, a partial denture can be made first and then a complete denture later.

Steps in making Immediate Dentures

Gathering a model of the patient's teeth.
Having a test fit of the dentures.
Adjusting the jaw alignment with an articulator machine.
Polishing and finishing the fabrication of the device.
Adjusting any necessary components.

Methods of Fitting Immediate Dentures in the Open Vestibule

Precise tooth positioning.
Simple denture fitting process
Avoids tissue alterations
Adequate bone width needed for retention and proper support.

Methods of Fitting Immediate Dentures in the Closed/Half-closed Vestibule

Good retention and support because of better design.
More suitable for patients depending on the state of their oral health.

Tissue Conditioning Materials

These materials are temporary soft liners.
Suitable for a duration of 1 week to 10 days.
Loss of suppleness and increased pressure on the tissues occur with extended usage.

Indications of Permanent Soft Liners

Patients experiencing aged- or disease-related oral problems.
Patients with compromised bone structure from previous or ongoing diseases.
Patients needing additional care following previous or ongoing treatment.

Indications of Temporary Soft Liners

Maintaining patient comfort and preventing tissue irritation.
Preventing inflammation during healing.
Protecting periodontal structures that may be affected by inflammation.

Ways for Using Tissue Conditioning Materials

Applying the material to affected areas of the mouth.
Adjusting the material to ensure it fits well with the contours of the mouth while minimizing impact on sensitive areas.

Disadvantages of Soft Liners

Hardening over time.
Difficulty in bonding with the denture base.
Concerns about device stability during usage.
High cost of the material.

Problems with Tissue Conditioning Materials

Alcohol loss
Porosity
Hypersensitivity

Clinical Application of Tissue Conditioner Materials

Preparation of the mouth and affected soft tissue.
Applying the substance to the surface of the denture (ensuring a proper fit).
Positioning the appliance.
Post-application care and guidelines.

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Description

Test your knowledge on prosthodontics, specifically focusing on soft lining materials and their applications in prosthesis management. This quiz covers conditions leading to discomfort, mucosal thickness related to alveolar ridge resorption, and the classification of materials used in dentistry. Perfect for dental students and practitioners alike.