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40 Cards in this Set

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What is abrasion?

The wearing away or removal of material by the act of rubbing, cutting, or scraping.

What is a substrate?

The object to be cut or abraded.

What is finishing?

The process of using abrasions to produce the final contour of a restoration by removing excess material and producing a reasonably smooth surface.

What is polishing?

The final removal of material from a restoration or appliance for a smooth surface that is aesthetically pleasing.

Describe the rationale for finishing and polishing a restoration.

Improved gingival health.Improved compatibility with oral tissue. Increased integrity of the junction of the tooth and restoration. Improved maintenance by patient. Increased life or service. Improved appearance.

List and describe five factors which affect abrasion.

Hardness of the abrasive. Size and shape of the abrasive. Concentration of the abrasive. Speed and pressure of application. Lubrication.



What is margination?

The process of removing excess restorative material to bring the restoration flush with the cavosurface tooth structure.

What are the indications for margination and what instrument is used?

Overhang or flash is not extensive in size.Tooth anatomy and contour can be improved. Proximal contact is present. Restoration is intact. The margin is accessible.




Amalgam or gold knife File Discoid/cleoid carver. Finishing Strip. Scaler or curette. Bur or disk. Ultrasonic scaler.




What are the differences between the components in prophy pastes and dentrifices?

Prophy Paste is a mixture of 50-60% abrasive materials (pumice, tin oxide, silicon dioxide) , 20-25% humectant, 10-20% water, 2-3%flavoring/agent, 1-2% fluoride or other therapeutic agent.




Dentifrices (Toothpastes) contain 20-40% abrasive materials (calcium pyrophosphate, tricalcium phosphate, hydrate alumina and silica, and sodium metaphosphate) 20-40% humectant, 20-40% water, 1-2% detergent, 2-3%flavoring/coloring agent, 1-2 % fluoride or other therapeutic agents.

What is Essential Selective Polishing?

Due to the sensitivity of restorative materials to scratching and wear, you should select cleaning and polishing agents according to the patient’s needs. At the beginning of the prophylaxis appointment, identify all of the restorative materials in the patient’s mouth and determine the type of polishing agents needed.

What are the contraindications for air polishing?

A physician-directed sodium-restricted diet, patients with respiratory disease, conditions that limit swallowing or breathing (COPD), patients with communicable infections, immunocompromised patients, patients taking potassium, antidiuretics, steroid therapy

What are factors that affect the abrasion rate of a dentrifice?

Hardness of the abrasive. Size and shape of the abrasive. Concentration of the abrasive. Speed and pressure of application. Lubrication.

What are the advantages of athletic mouth guards?

Decrease injuries:•Tooth Avulsion•Fractured Teeth•Gingival and Mucosal•Jaw Fracture•Neck Injury•Concussion

What are five oral conditions that may require the need for a custom fluoride tray?

A high incidence or risk of dental caries, including rampant enamel or root caries, xerostomia, overdentures, hypersensitivity, and radiation therapy.

Which fluoride gels are compatible with a custom fluoride tray?

Acidulated phosphate fluoride (0.5%), sodium fluoride (1.1%), and stannous fluoride (0.4%)

What are the ideal properties of an athletic mouth guard?

The mouthguard should be properly fitted to the wearer's mouth and accurately adapted to their tooth structures, it should be made of resilient material approved by the FDA and cover all remaining teeth on one arch, customarily the maxillary, stay in place comfortably and securely, be physiologically compatible with the wearer, be relatively easy to clean, have high-impact energy absorption and reduce transmitted forces upon impact.

What is the difference between thermoplastic and thermoset?

Thermoplastic is heated and molded after it sets, a thermoset is not heated and molded after it sets. Thermoset is used more in dentistry.

What are the six properties of acrylic resin?

Polymerization Shrinkage, Dimensional Change, Strength, Thermal Conductivity, Porosity,

What is long-term soft liner?

Silicone rubber or acrylics withplasticizers are used for long-term soft liners. These liners are used for patients who havechronic soreness from bony spicules, thin mucosa or tissue undercuts whichcannot be removed.

What is a short-term liner?

Typically last from one to four weeks. The short-term liners are used for patients recovering from a surgical procedure or when a denture sore has formed. These liners are also called Tissue Conditioners or Treatment Liners.

What is a hard liner?

Hard lining materials are used when adenture becomes loose and is no longer functioning appropriately. The hard lining materials can be placed at the chair or sent to the laboratory for repair.

What are the advantages and disadvantages of plastic denture teeth?

Plastic teeth have several advantages over porcelain in a denture. Plastic teeth chemically bond to the base and are easy to alter in occlusal adjustment. They also result in less pressure on the underlying bone resulting in less resorption. However, they are softer and wear more quickly that porcelain.

What are the advantages and disadvantages of porcelain teeth?

Porcelain teeth are very strong and wear resistant. They have great aesthetics and resist staining. However, they do not bond to the base and must use pins for retention. Porcelain teeth also wear natural teeth and restorative materials and the occlusal forces can result in alveolar bone resorption.

Give home care instructions to a patient who wears dentures or partials.

Dentures should be cleaned daily with a denture brush and mild cleanser. Calculus can be softened with a 1:1 ratio solution of vinegar and water. Bleach products should be avoided on any denture or partial containing metal. Avoid using hot water when cleaning or soaking a denture to prevent distortion. Clean dentures over a sink partially filled with water to avoid fracture if the denture is dropped.Store dentures in water when they are not in the mouth to prevent loss of moisture and dimensional change.

Diamond Polishing Paste

Used to remove stain on porcelain, gold, metal and composite restorations.




Use the paste only on the restored teeth. Polish the natural teeth with a paste of your choice.

Shimmer

Used to remove stain from composite, porcelain, gold and metal restorations.




Use the paste only on the restored teeth. Polish the natural teeth with a paste of your choice.


Maxmin with Xylitol andPhosflor


(Medium abrasive)

Used to remove stain and tarnish from amalgam restorations and polish natural teeth. Helps remineralize tooth and increases uptake of fluoride.

NUPRO with Novamin

Used to remove stain and tarnish from amalgam restorations and polish natural teeth. Helps remineralize tooth and increases uptake of fluoride.

CPR

Used to remove stain on porcelain, gold, metal, composite restorations and natural teeth.

Procare

Used to remove stain and tarnish from amalgam restorations and to polish natural teeth.

Nada

Used to remove stain and tarnish from amalgam restorations and to polish natural teeth.

Prep and Polish

Used to remove stain and tarnish from amalgam restorations and to polish natural teeth. (Can be used prior to sealant placement. Contains no fluoride or oils.)

Colgate ProRelief


(Desensitizing Paste)

Used to polish exposed root surfaces. Pro argin Technology – Blocks tubules.




Use the paste only on the restored teeth. Polish the natural teeth with a paste of your choice.

Differentiatebetween various restorative materials seen on dental radiographs.

Composites, cements, sealants, porcelain, and other ceramics can either be radiolucent or radiopaque. Amalgams are radiopaque. Metals and all others are radiopaque.

Identify irregularities and defects in dentalrestorations and discuss with the patient.

Flash (extra material on the top surface), irregular margin (not a smooth surface), ditching (not enough), overhang(extra material on the side), open margin (material does not go all the way down), undercontoured (material does not go all the way out).

Selectinstruments which will remove debris without damaging restorative materialsused in the oral cavity.

Implants can be cleaned with special plastic or titanium hand instruments, plastic sheaths for ultrasonic scalers, and non-abrasive paste or tin-oxide. The surface integrity of the titanium can be easily abraded.

Describe this to a patient -


Class III composite on tooth #7

We will place a tooth-colored filling on the tooth in between your upper left canine and your upper left big front tooth. It will be on the side of that tooth.

Describe this to a patient-


Three-unit bridge on teeth #2-#4

You have lost your upper right first molar, and to replace that tooth, we will put a bridge to connect your upper right second molar and your upper right second premolar. We will trim those two teeth down and put a crown on those teeth, and in the middle there will be a false tooth. This is all connected as one entire piece.

Describe this to a patient-


Tooth #3 is not present

Your upper right first molar does not appear to be in your mouth. We will take x-rays to determine the cause.

Describe this to a patient-


Root canal on tooth #8



Your upper left big front tooth has an infected bundle of nerves. We will need to drill into that tooth and remove the infected bundle of nerves. After we remove the bundle of nerves, we will pack material into the canal. Afterwards, we will place a crown onto that tooth.