Related Concept Videos
01:21Tooth Anatomy
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
01:03Fixation and Sectioning
Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
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Sectional dentures revisited.
Naveen Karir1, Vishali Hindocha, A Damien Walmsley
1Birmingham Dental Hospital, UK.
Dental Update
|June 9, 2012
Summary
Sectional dentures offer a viable solution for complex dental restorations, particularly when undercuts pose challenges for conventional prosthetics. These split dentures provide effective retention and stability, proving successful in challenging cases within general dental practice.
Area of Science:
- Prosthodontics
- Dental Materials Science
Background:
- Sectional dentures are designed in separate components that connect intra-orally, forming a single prosthesis.
- They are indicated for cases with significant undercuts or complex tissue contours requiring multiple insertion paths, often utilizing split pin or locking bolt mechanisms.
Observation:
- Two case studies illustrate the application of sectional dentures: a 30-year-old male with a failing Kennedy Class IV upper partial denture and a 40-year-old female with lower right quadrant saddle issues and denture intolerance.
- Both cases involved complex anatomical challenges and a history of prosthetic failure with conventional methods.
Findings:
- Sectional dentures were successfully employed in both cases, particularly in the aesthetic zone, providing improved retention and stability.
- These dentures addressed undercuts that precluded conventional restoration techniques, offering a viable alternative to implants and bridgework.
Implications:
- Sectional dentures represent an important alternative prosthetic technique for managing complex edentulous spaces, especially where undercuts are present.
- Their successful application in these cases demonstrates their feasibility and effectiveness within general dental practice, offering patients alternative solutions.