Dental Materials M4

DENTAL MATERIALS M4

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DENTAL RESIN • Plastics

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Common in powder – liquid form

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Solubility: 0.1%

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USES OF RESIN: • INDIVIDUAL TRAY •

CEMENTING MEDIUM o

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Artificial teeth

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Can be resin(plastic) or porcelain

JACKET CROWNS o

Houses the tooth

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Can be acrylic resin or porcelain

Tooth colored materials that are usually seen in anterior teeth

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Resurfacing or changing the entire base

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Lasts longer than ZOE paste

REPAIRING

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DIMENSIONALLY STABLE o

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Repair fractured denture

Patients who suffer from night grinding or persons who do sports use mouth guards to prevent attrition

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Base for expanders

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Base for retainers

During fabrication and normal usage

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INSOLUBLE BY ANY FLUIDS

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ABLE TO WITHSTAD ABRASION o

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Durable

PALATABLE o

Tasteless

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odorless

CAPABLE OF BEING TAINTED OR PIGMENTED o

Protects young molars from premature onset of caries

REMOVABLE ORTHODONTIC APPLIANCE

Simulates the tissues they are supposed to replace

COLOR STABLE o

Rubber-like in nature

PITS AND FISSURE SEALANT

No irritating ingredients

TRANSPARENT/TRANSLUSCENT o

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No shrinkage or expansion

NON-TOXIC o

MOUTH GUARDS

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for easier setting

GOOD QUALITIES OF DENTURE BASE MATERIALS:

RELINING/REBASING

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Labial is made of resin while M, D and Li is made of metal

BASE PLATE o

RESTORATIVE MATERIAL

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Part of the denture that rest on the soft tissues where pontics are attached

Artificial replacement of facial parts

FACING FOR A ¾ CROWN o

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Blocks the space to improve speech

PONTICS

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Patients with cleft palate

CONSTRUCTION OF MAXILLOFACIAL STRUCTURES o

Pontics, crowns, inlays, onlays

DENTURE BASE o

OBTURATOR

Simulate the color of the tissue being replaced/copied to make it look natural

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EASY TO REPAIR

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LOW SPECIFIC GRAVITY o

For stability

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Upper is more stable than lower

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IMPERMEABLE TO ORAL FLUIDS

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EASY TO FABRICATE WITH SIMPLE LABORATORY EQUIPMENTS

*No resin material can meet all the requirements listed.

VULCANITE RESIN •

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Prevents premature polymerization of liquid during storage

GLYCOL DIMETHACRYLATE 

Cross-linking agent

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Improve strength of resin

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CRAZING •

First non-metallic resin

Linear cracks found on surface

COMPOSITION OF RESIN: •

POWDER: POLYMER o

POLYMETHYL METHACRYLATE 

Beads/pearl form -Rosette Go 012009 

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BENZOIL PEROXIDE 

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DIBUTYL PTHALATE 

Plastisizer

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Improves workability

COLORING MATERIALS 

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Copies the small veins and arteries in the gingiva

TITANIUM DIOXIDE 

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Prevention of cohesion during storage

DYED SYNTHETIC FIBERS 

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Shade

TALC/GELATIN 

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Initiator of polymerization process

Fillers

LIQUID: MONOMER o

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METHYL METHACRYLATE 

Colorless liquid

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Sweetish odor

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Toxic when inhaled in a long period of time

HYDROQUINONE 

Inhibitor