Podcast
Questions and Answers
What type of occlusion is typically used when a mandibular implant-supported prosthesis opposes maxillary osseointegrated prosthesis or natural dentition?
What type of occlusion is typically used when a mandibular implant-supported prosthesis opposes maxillary osseointegrated prosthesis or natural dentition?
Match the Kennedy classes with their corresponding occlusal concepts:
Match the Kennedy classes with their corresponding occlusal concepts:
Kennedy Class I = Balanced occlusion Kennedy Class II = Group function Kennedy Class III = Mutually protected occlusion
What is the primary consideration for the continued success of a single complete denture?
What is the primary consideration for the continued success of a single complete denture?
Preservation of remaining natural teeth
The first technique for tooth modification is known as __________ Technique.
The first technique for tooth modification is known as __________ Technique.
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Eccentric records are made after mounting the casts on a semi-adjustable articulator.
Eccentric records are made after mounting the casts on a semi-adjustable articulator.
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What is the purpose of the clear acrylic resin template in the third technique described by Bruce?
What is the purpose of the clear acrylic resin template in the third technique described by Bruce?
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What techniques are commonly used for functional chew-in?
What techniques are commonly used for functional chew-in?
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Study Notes
Occlusal Scheme for Implant-Supported Prosthesis
- Mandibular implant-supported prosthesis can oppose maxillary osseointegrated prosthesis or natural dentition through four occlusal schemes: mutually protected, lingualized, medial positioned lingualized, and bilateral balanced occlusion.
- In partially edentulous maxillary arches, different Kennedy classifications (I, II, III) determine compatible mandibular occlusal concepts such as balanced occlusion and group function.
Maxillary Single Denture Considerations
- Challenges arise when a single denture opposes natural teeth due to:
- Firm retention of natural teeth in bone increases force magnitude.
- Occlusal form of natural teeth affects denture design.
- Fixed positions of mandibular anterior teeth complicate maxillary tooth placement.
- Material choice leads to wear issues; acrylic can abrade, while porcelain can damage natural teeth.
Solutions for Single Complete Denture Success
- Preservation of remaining structures is essential.
- Proper diagnosis and utilization of factors favoring denture success are pivotal.
- Follow complete denture construction principles to optimize function:
- Maximize base extension to distribute forces over a larger area.
- Minimize force per unit area on supporting structures.
- Adjust occlusal planes of natural teeth to achieve harmonious occlusion and control destructive forces.
Steps for Occlusal Adjustment
- Make maxillary and mandibular impressions; pour casts and mount on a semi-adjustable articulator with provisional centric relation at an acceptable vertical dimension.
- Set condylar elements based on eccentric records.
Tooth Modification Techniques
- Swenson’s Technique: Set denture teeth; adjust natural teeth guided by diagnostic cast.
- Yurkstas Technique: Use a convex metal U-shaped occlusal template on remaining teeth to identify modifications.
- Bruce’s Technique: Create a clear acrylic resin template over a modified stone cast to identify occlusal interferences.
- Boucher et al.'s Technique: Remove interferences by grinding the natural teeth while moving maxillary porcelain teeth over mandibular stone teeth until balanced occlusion is achieved.
Importance of Balanced Occlusion
- Establishing harmonious balanced occlusion throughout maximum mandibular excursions stabilizes the denture and reduces horizontal forces acting on it.
Functional Chew-In Techniques
- Stansbury Technique: Utilize a compound maxillary rim; trim and mold it to functional movements during eccentric chewing, preserving vertical dimension for occlusal guidance.
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Description
Test your knowledge of occlusal schemes in implant-supported prostheses and maxillary single dentures. This quiz covers concepts such as Kennedy classifications, balanced occlusion, and challenges presented by natural teeth. Understand how these factors affect denture design and function.
