Planning and Making Crowns and Bridges 4th Edition by Bernard G.N. Smith, Leslie C. – Ebook PDF Instant Download/Delivery. 1040073530, 978-1040073537
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Product details:
ISBN 10: 1040073530
ISBN 13: 978-1040073537
Author: Bernard G.N. Smith, Leslie C.
Planning and Making Crowns and Bridges 4th Table of contents:
Part 1: Crowns
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Indications and Contraindications for Crowns:
- Crowns are used for badly broken-down teeth, trauma, tooth wear, hypoplastic conditions, to alter tooth appearance or function, and as part of other restorations.
- Alternatives to crowns include fillings, bleaching, veneers, and inlays depending on the tooth’s condition and the desired outcome.
- Anterior crowns are typically used for caries, trauma, non-vital teeth, tooth wear, and hypoplastic conditions. Alternatives include bleaching and veneers.
- Posterior crowns may use bonded or pin-retained amalgam, composite restorations, or gold inlays.
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Types of Crown:
- Ceramic Crowns: Includes traditional porcelain jacket crowns, pressed ceramics, and zirconia cores.
- Metal-Ceramic Crowns: These combine a metal base with a ceramic layer for aesthetics and durability.
- Other Crowns: Cast metal acrylic or composite-faced crowns, fibre-reinforced composite crowns, and post-retained crowns.
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Crown Preparation Design:
- Preparation depends on the material used (metal, ceramic, or metal-ceramic) and includes considerations of occlusion, tooth shape, and the adjacent structures.
- Proper retention and resistance form are essential to prevent crown failure, with strategies including taper, length, and interlocking minor undercuts.
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Occlusal Considerations:
- Proper occlusion is critical for crown longevity, with adjustments made to prevent premature contacts and ensure harmony.
- Tools like articulating paper, wax, and occlusal registration silicones help with occlusal analysis.
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Planning and Making Crowns:
- Comprehensive patient assessment is essential, including occlusion, tooth condition, and the patient’s needs.
- Detailed planning for crown design, material selection, and tooth preparation must precede clinical and laboratory stages.
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Clinical Techniques for Making Crowns:
- Involves preparing the tooth, making impressions, and fabricating temporary crowns.
- After tooth preparation, a working impression is made, followed by a trial of the permanent crown for fit, retention, occlusion, and appearance.
Part 2: Bridges
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Indications for Bridges:
- Bridges are indicated for replacing missing teeth, particularly when there are issues with occlusion, aesthetics, or the function of partial dentures or implants.
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Types of Bridge:
- Conventional Bridges: Fixed-fixed, cantilever, and spring cantilever are common designs.
- Minimum-Preparation Bridges: These are less invasive and may offer aesthetic benefits but have some limitations.
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Components of Bridges:
- Retainers: Full crowns, partial crowns, or minimum-preparation retainers are used for anchoring bridges.
- Pontics: The part of the bridge replacing the missing tooth. Its design must ensure cleanliness, strength, and good aesthetics.
- Connectors: Connectors between pontics and retainers, ensuring strength and stability.
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Designing and Planning Bridges:
- Factors like the condition of abutment teeth, occlusion, and span length must be considered when planning a bridge.
- Ensuring the conservation of tooth tissue and good cleansability are key.
- Clinical Techniques for Bridge Construction:
- Preparing the abutment teeth, making temporary bridges, and fitting the final bridge involve careful planning and execution.
- A range of materials may be used depending on the patient’s needs and the design chosen.
Part 3: Implants, Splints, and Maintenance
- Dental Implants:
- General Indications for Implants: Used when bridges or dentures are not viable options. Implants integrate with the bone, providing a stable foundation for restorations.
- Planning and Surgical Procedures: Involves selecting the correct number and placement of implants, addressing any bone deficiencies, and ensuring aesthetic outcomes.
- Fixed Splints:
- Indications: Used in trauma, periodontal disease, or orthodontic retention to stabilize teeth or prevent further damage.
- Types: Can range from short-term splints for immediate care to long-term splints for permanent stability.
- Crown and Bridge Failures and Repairs:
- Causes of Failure: Includes loss of retention, mechanical failure, caries, periodontal disease, and issues with abutment teeth.
- Repairs: Involves grinding, polishing, or replacing parts of crowns and bridges. Adjustments and re-cementation may also be necessary.
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