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Scenario 4, Mohammed Dhia Belkine Douoauia 2106683933 - Coggle Diagram
Scenario 4
Acrylic Resin Material
Types
Light Curing Acrylic Resin
Heat Curing Acrylic Resin
Chemical Curing Acrylic Resin
Function
Used in the construction of complete and partial dentures
Maxillofacial prostheses, used to replace missing oral or facial structures
Simulate the oral mucosa and the teeth
reline the prostheses to improve their fit and to repair them when they break
Definition
Acrylic resin is a hard, brittle, colorless
polymer that is used as a dental material for customizing trays, denture repair, soft liners
Advantage & Disadvantage
Advantage
No mixing needed, No aromatic amine accelerator, Small increments of the composite can be polymerized at a time
Disadvantage
Marginal stress buildup during curing is much higher,Normal room lighting has a mildly sensitive effect, A special lamp is needed for photo-initiated curing.
Properties
Polymerization Shrinkage
Strength
Dimensional Change
Thermal Conductivity
Composition
An acrylic resin denture is made by the process of free radical addition polymerization to form poly methyl methacrylate
Denture
Definition
Dentures (false teeth) are prosthetic devices constructed to replace missing teeth, and are supported by the surrounding soft and hard tissues of the oral cavity
Function
Helps with chewing Food
Helps talking Clearly
Cosmetic Purposes
Jaw Support
Types
denture base
acrylic resins
Composition
denture base
the majority of denture bases has been fabricated using polymethyl methacrylate resins
acrylic resins
most polymethyl methacrylate resin systems include powder and liquid components
How to Manipulate
1) Creating the model
2) Pouring the model
3) Fabricating custom tray and bite rim
4) Articulation of the model
5) Setting up the teeth and wax carving
6) Flasking
7) Acrylic Mixing
8) Acrylic Pressing
9) Removal of Plaster:
10)Trimming and Polishing of denture
Ideal Properties
Easy to clean
resistant to microbial growth
Should be capable of matching the appearance of the natural oral soft tissues
good shelf life
Should be unaffected by oral fluids
Physical properties
includes: thermal expansion matches that of artificial teeth, high thermal conductivity, low density, and softening temperature higher than the temperature of foods and liquids in the mouth
Biocompatible
Mechanical properties
, includes: modulus of elasticity, high proportional limits, high transverse strength, high impact strength, high fatigue strength, sufficient resilience, hard and with good abrasion resistance.
Preventive Materials
Definition
Preventive dental materials are aimed to prevent the teeth and supporting tissues from disease or injury. Fluoride gels or varnishes, pit and fissure sealants, and mouth protectors are the three examples of preventative materials.
Function
it works as a sealing agent that prevent leakage
it has antibacterial effects
it's also liners, bases, cement, and restorative materials such as compomer, hybrid ionomer, and glass ionomer cement
Types
Tooth cleaning substances (toothpaste, dentifrices)
Mouth wash
Fluoride varnish (root canal, pit and fissure)
Bases
Liners
Disadvantages and advantages
Advantages
Elimination of bad breath
Reduced risk of tooth loss
Reduces the risk of periodontal disease
Avoiding tooth discoloration
Disadvantages
May cause teeth staining
May cause or irritate canker sores
May cause burning or pain when you use it
May be used wrong, which causes allergic cases.
May remove your healthy oral microbiome
Properties
Mohammed Dhia Belkine Douoauia 2106683933