Podcast
Questions and Answers
What is a key advantage of tapering the seal posteriorly?
What is a key advantage of tapering the seal posteriorly?
- It enhances the aesthetic appearance of the prosthesis.
- It simplifies the fabrication process of the denture.
- It minimizes the need for adjustment periods.
- It creates a more accurate maxillo mandibular record. (correct)
What are the potential risks of not tapering the seal posteriorly?
What are the potential risks of not tapering the seal posteriorly?
- Increased tissue irritation due to improper fit. (correct)
- Easier adjustment periods for the new denture wearer.
- Improved retention of the denture.
- Enhanced psychological security for the patient.
Which statement correctly describes the fluid wax technique?
Which statement correctly describes the fluid wax technique?
- It uses waxes that do not flow at mouth temperature.
- It is primarily a non-physiologic method of securing the denture.
- It requires the use of elastomeric impression material.
- It follows the same procedure as conventional technique. (correct)
What is one of the four types of wax that can be used in the fluid wax technique?
What is one of the four types of wax that can be used in the fluid wax technique?
What is a disadvantage of the tapering technique used in denture fittings?
What is a disadvantage of the tapering technique used in denture fittings?
How do the wax types used in the fluid wax technique perform at mouth temperature?
How do the wax types used in the fluid wax technique perform at mouth temperature?
Which material is NOT suitable for use in the fluid wax technique?
Which material is NOT suitable for use in the fluid wax technique?
What can be concluded about the psychological effects of the tapering technique on patients?
What can be concluded about the psychological effects of the tapering technique on patients?
What is the purpose of the pterygomaxillary seal?
What is the purpose of the pterygomaxillary seal?
Where are the fovea palatina located?
Where are the fovea palatina located?
The medial palatal raphe is characterized by what feature?
The medial palatal raphe is characterized by what feature?
What is the vibrating line used for in dentistry?
What is the vibrating line used for in dentistry?
What can cause dislodging forces in the area of the posterior palatal seal?
What can cause dislodging forces in the area of the posterior palatal seal?
What is indicated if the tours palatini extend to the bony limit of the palate?
What is indicated if the tours palatini extend to the bony limit of the palate?
What defines the anterior vibrating line?
What defines the anterior vibrating line?
What role does the pterygomaxillary fold play during the impression procedure?
What role does the pterygomaxillary fold play during the impression procedure?
What is the primary purpose of the posterior palatal seal in a maxillary complete denture?
What is the primary purpose of the posterior palatal seal in a maxillary complete denture?
What factors contribute to the retention of a denture?
What factors contribute to the retention of a denture?
Where is the peripheral seal of the maxillary denture primarily located?
Where is the peripheral seal of the maxillary denture primarily located?
What happens to the acrylic in the posterior palatal area of the maxillary cast during the denture creation process?
What happens to the acrylic in the posterior palatal area of the maxillary cast during the denture creation process?
How does the posterior palatal seal benefit the retention of a maxillary denture?
How does the posterior palatal seal benefit the retention of a maxillary denture?
What must be considered when creating an effective posterior palatal seal?
What must be considered when creating an effective posterior palatal seal?
The peripheral border of a well-fitting denture must be compatible with what?
The peripheral border of a well-fitting denture must be compatible with what?
Which anatomical boundaries does the posterior palatal seal have?
Which anatomical boundaries does the posterior palatal seal have?
What does the escape of air bubbles under the posterior border of a denture indicate?
What does the escape of air bubbles under the posterior border of a denture indicate?
What is a common cause of overdamming in denture fitting?
What is a common cause of overdamming in denture fitting?
Which material is NOT suggested for correcting a short posterior palatal seal?
Which material is NOT suggested for correcting a short posterior palatal seal?
When is it recommended to record the posterior palatal seal for optimal patient confidence?
When is it recommended to record the posterior palatal seal for optimal patient confidence?
What technique is suggested for the addition of a posterior palatal seal to an existing denture?
What technique is suggested for the addition of a posterior palatal seal to an existing denture?
What might occur if the posterior border of a denture is displaced inferiorly upon insertion?
What might occur if the posterior border of a denture is displaced inferiorly upon insertion?
Which of the following describes a recommended prevention method for correcting overdamming?
Which of the following describes a recommended prevention method for correcting overdamming?
If an existing denture shows vertical dimension or esthetic issues, what action should be taken?
If an existing denture shows vertical dimension or esthetic issues, what action should be taken?
What is the recommended patient position during the impression making for the palatal seal area?
What is the recommended patient position during the impression making for the palatal seal area?
How long should the impression be held in place after application?
How long should the impression be held in place after application?
What should be done if tissue contact is not established after the initial impression?
What should be done if tissue contact is not established after the initial impression?
Which of the following is an advantage of using this impression technique?
Which of the following is an advantage of using this impression technique?
What is indicated by a glossy appearance of the impression upon removal?
What is indicated by a glossy appearance of the impression upon removal?
What is a disadvantage of the impression technique described?
What is a disadvantage of the impression technique described?
What should be done after the secondary impression is made?
What should be done after the secondary impression is made?
Which of these actions is avoided by using the physiological impression technique?
Which of these actions is avoided by using the physiological impression technique?
Study Notes
Denture Retention and Stability
- Creating a partial vacuum enhances retention and stability of maxillary dentures.
- Increased strength of maxillary denture bases contributes to patient comfort and confidence.
Peripheral Seal
- Peripheral seal forms contact area between the mucosa and denture base, preventing air passage.
- Retention relies on adhesion, cohesion, and interfacial surface tension to counter dislodging forces.
- Posterior palatal seal (PPS) compensates for acrylic distortion, pulling away from posterior palatal area.
- PPS creates a vacuum seal with the soft palate, providing secure denture placement.
Anatomical Considerations
- PPS is divided into post palatal and pterygomaxillary seals.
- Post palatal seal spans from one tuberosity to the other; pterygomaxillary seal extends laterally from the pterygo maxillary notch.
- Fovea palatina serves as a guideline for placing the PPS but should not be solely relied upon.
- The medial palatine raphe has minimal submucosa, making it less tolerant to compression.
Physiological Considerations
- Thick saliva can generate hydrostatic pressure, applying downward dislodging forces anterior to the PPS.
Vibrating Line
- An imaginary line divides movable and immovable soft palate tissues, crucial for accurate denture fitting.
- Incorrect tapering of the posterior seal can lead to tissue irritation.
Advantages of Proper PPS Technique
- Enhances retention of the trial base.
- Produces accurate maxillo-mandibular records for effective denture fit.
- Provides patients with psychosocial assurance of retention.
Disadvantages of Incorrect Technique
- Non-physiologic methods can lead to over-compression of tissues.
- Risks of inaccurate transfer of vibrating lines and excessive scraping of the cast.
Fluid Wax Technique
- Flowing wax at mouth temperature is used for accurate marking of anterior and posterior vibrating lines.
- Patient must be positioned upright during impression making for optimal results.
- Physiologic techniques prevent over-compression of tissues and incorporate the PPS.
Inspection and Correction
- Inspect posterior border to identify areas of under-damming or over-postdamming.
- Prevention involves careful scraping and adjustments to the denture border as needed.
Alterations to Existing Dentures
- Examine existing dentures for poor PPS length and depth.
- Whether existing dentures require adjustment or a complete remake depends on additional issues like vertical dimension or aesthetics.
- Techniques for adding a PPS include use of fluid wax or acrylic resin materials.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Explore the key concepts of denture retention and stability in this informative quiz. Discover how peripheral seals and underlying forces such as adhesion and cohesion can enhance patient comfort and confidence. Test your understanding of the principles that make maxillary denture bases effective.
