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Questions and Answers
ما هو النسبه المطلوبة من الذهب والبلاτινوم والبالاديوم في السبائك النبيلة؟
ما هو الاسم الجماعي للسبائك التي تحتوي على الفضة والبالاديوم والتي تستخدم في الأworks التاجية والجسور السنية؟
ما هو الاستخدام الرئيسي لسبائك التيتانيوم في صناعة الأسنان؟
ما هو الاسم الجماعي لسبائك التي تحتوي على الكوبالت والكروم والتي تستخدم في جسور ومتدالية سنية؟
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ما هو الاستخدام الرئيسي لسبائك النحاس في صناعة الأسنان؟
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ما هو الاسم الجماعي لسبائك التي تحتوي على الذهب والبلاتينوم والبالاديوم والتي تستخدم في صناعة الأسنان؟
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Study Notes
Dental Alloys
Classification
- Noble Alloys: High in gold, platinum, and palladium content (>40%)
- Non-Noble Alloys: Lower in gold, platinum, and palladium content (<40%)
- Base Metal Alloys: Contain non-precious metals like nickel, chromium, and titanium
Properties
- Corrosion Resistance: Ability to resist corrosion in oral environment
- Strength: Resistance to deformation and fracture
- Ductility: Ability to be shaped without breaking
- Hardness: Resistance to scratching and wear
- Biocompatibility: Ability to withstand oral tissues without adverse reaction
Types of Dental Alloys
- Gold Alloys: High in gold content (>75%), used for inlays, onlays, and crowns
- Silver-Palladium Alloys: Used for crowns, bridges, and dentures
- Copper Alloys: Used for dentures and orthodontic appliances
- Titanium Alloys: Used for implants, crowns, and bridges due to high strength, low density, and biocompatibility
- Cobalt-Chromium Alloys: Used for partial dentures, crowns, and bridges due to high strength, corrosion resistance, and biocompatibility
Manufacturing Processes
- Casting: Melting and pouring alloy into a mold to create a desired shape
- Forging: Shaping alloy through heat and pressure
- Machining: Cutting and shaping alloy through mechanical means
- Welding: Joining two alloy pieces together through heat and pressure
Clinical Applications
- Restorative Dentistry: Used for inlays, onlays, crowns, and bridges
- Prosthodontics: Used for dentures, partial dentures, and implant-supported prosthetics
- Orthodontics: Used for orthodontic appliances and brackets
- Implantology: Used for dental implants and implant-supported prosthetics
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Description
Learn about the classification, properties, and types of dental alloys, including their manufacturing processes and clinical applications in restorative dentistry, prosthodontics, orthodontics, and implantology.