Dental Materials - Finishing and Polishing
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Questions and Answers

The process of composite finishing and polishing follows a fine to coarse abrasive progression.

False (B)

Heat generation during finishing and polishing must be controlled to avoid pulpal irritation.

True (A)

Using a slow-speed handpiece is unnecessary in preventing excessive heat during polishing.

False (B)

Isolation of the tooth is not important when finishing and polishing composite restorations.

<p>False (B)</p> Signup and view all the answers

The goal of composite finishing and polishing is to create a rough and uneven restoration.

<p>False (B)</p> Signup and view all the answers

Patients may experience vibrations or mild discomfort during the finishing and polishing process.

<p>True (A)</p> Signup and view all the answers

Dental floss can be used to confirm proper contacts and gingival margins after finishing and polishing.

<p>True (A)</p> Signup and view all the answers

Gathering necessary equipment for finishing and polishing is considered an optional step.

<p>False (B)</p> Signup and view all the answers

Finishing and polishing composite restorations help decrease the risk of recurrent caries.

<p>True (A)</p> Signup and view all the answers

Composite restorations can only be polished after a certain period post-placement.

<p>False (B)</p> Signup and view all the answers

The only goal of polishing is to improve the esthetics of the restoration.

<p>False (B)</p> Signup and view all the answers

Polishing is performed more frequently than refinishing for composite restorations.

<p>True (A)</p> Signup and view all the answers

Finishing and polishing are viewed as two distinct procedures in the process of improving composite restorations.

<p>True (A)</p> Signup and view all the answers

Overextension is an indication for repair or replacement of composite restorations.

<p>False (B)</p> Signup and view all the answers

Improper finishing of composite restorations can lead to plaque buildup and periodontal disease.

<p>True (A)</p> Signup and view all the answers

Various products such as burs, strips, and pastes are used for polishing composite restorations.

<p>True (A)</p> Signup and view all the answers

A curved scalpel blade is effective for removing interproximal overhangs due to its single cutting edge on the outside curve.

<p>False (B)</p> Signup and view all the answers

The outer edge of the scalpel blade is designed to cut and therefore poses a higher risk of soft tissue trauma.

<p>False (B)</p> Signup and view all the answers

If a hygienist feels uncomfortable using a scalpel, they should seek assistance from a dentist.

<p>True (A)</p> Signup and view all the answers

Flame-shaped finishing burs are primarily used to remove composite materials from gingiva.

<p>False (B)</p> Signup and view all the answers

Finishing disks are suitable for restorations that extend onto the facial or lingual surface.

<p>True (A)</p> Signup and view all the answers

The center of the finishing strip is abrasive, allowing it to cut through the proximal contact effectively.

<p>False (B)</p> Signup and view all the answers

When using finishing disks, deliberate brush strokes should always start from the restoration surface and move toward the tooth structure.

<p>False (B)</p> Signup and view all the answers

Keeping the finishing bur in a constant motion is critical to avoid gouging the restoration.

<p>True (A)</p> Signup and view all the answers

Egg- or football-shaped finishing burs are used for occlusal finishing.

<p>True (A)</p> Signup and view all the answers

Polishing involves removing more material than finishing to achieve a high-luster surface.

<p>False (B)</p> Signup and view all the answers

Finishing points and cups are used to create deliberate, brush-like strokes on surfaces.

<p>True (A)</p> Signup and view all the answers

Flame-shaped finishing burs are primarily used for polishing occlusal surfaces.

<p>False (B)</p> Signup and view all the answers

Evaluating the finishing procedure is unnecessary before polishing.

<p>False (B)</p> Signup and view all the answers

Fine abrasive disks are only used for polishing facial surfaces, not for occlusal surfaces.

<p>False (B)</p> Signup and view all the answers

Composite polishing pastes are used to create a high-luster finish and improve esthetics.

<p>True (A)</p> Signup and view all the answers

The restoration should be rough and shiny after the polishing procedure.

<p>False (B)</p> Signup and view all the answers

The purpose of polishing is solely to enhance the structural integrity of a material.

<p>False (B)</p> Signup and view all the answers

Dental materials must meet criteria such as biocompatibility and strength for effective restorations.

<p>True (A)</p> Signup and view all the answers

Using high-speed tools is recommended to reduce heat generation during polishing.

<p>False (B)</p> Signup and view all the answers

Water or cooling agents can be used to help prevent heat buildup when working with dental materials.

<p>True (A)</p> Signup and view all the answers

It is advisable to work continuously on one spot to achieve the best polishing results.

<p>False (B)</p> Signup and view all the answers

Heat-resistant materials can aid in managing heat better during polishing and finishing processes.

<p>True (A)</p> Signup and view all the answers

The longevity of dental procedures has no relation to the choice of dental materials used.

<p>False (B)</p> Signup and view all the answers

Taking breaks while working helps to cool down tools and materials, preventing overheating.

<p>True (A)</p> Signup and view all the answers

Maintaining a dry tooth during polishing a composite restoration is the best way to prevent overheating of the pulp.

<p>False (B)</p> Signup and view all the answers

Composite restorations should ideally be finished during the placement appointment.

<p>True (A)</p> Signup and view all the answers

Coarser abrasive disks should be followed by finer abrasive disks to improve the surface finish of composites.

<p>True (A)</p> Signup and view all the answers

Finishing and polishing composite restorations can lead to excessive corrosion.

<p>False (B)</p> Signup and view all the answers

An egg-/football-shaped finishing bur is the most effective abrasive for finishing the lingual side of anterior composite restorations.

<p>True (A)</p> Signup and view all the answers

Polishing is performed before finishing in the restoration process.

<p>False (B)</p> Signup and view all the answers

Removing occlusal excess and flash is done during the finishing phase of composite restorations.

<p>True (A)</p> Signup and view all the answers

Smoothing the facial and lingual surfaces is an optional step in the polishing process.

<p>False (B)</p> Signup and view all the answers

Flashcards

Egg- or Football-Shaped Finishing Burs

Used for occlusal finishing, guided by existing tooth structure to refine triangular ridges, grooves, and fossae with smooth, intermittent strokes.

Finishing Points and Cups

Used to smooth surfaces and grooves with deliberate, brush-like strokes over the restoration.

Facial and Lingual Surfaces Finishing

Involves smoothing margins, refining contours, and removing flash and stains.

Flame-Shaped Finishing Burs

For contouring and smoothing margins, using smooth, intermittent strokes to prevent gouging.

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Evaluation of Finishing Procedure

Ensure all criteria from the Skill Performance Evaluation Sheet are met before proceeding to polishing.

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Polishing Process

Similar to finishing, but uses fine abrasives, removes less material, and results in a lustrous surface.

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Polishing Proximal Surfaces

Fine abrasive disks, strips, or rubber polishing disks/points/cups are used with smooth, deliberate strokes to achieve a high-luster surface.

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Polishing Occlusal Surfaces

Polishing points or cups are used to polish occlusal surfaces with smooth, deliberate strokes.

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Finishing and Polishing of Composite Restorations

A procedure used to create a smooth, uniform surface on a composite restoration. This enhances its longevity, reduces plaque buildup, and protects surrounding tissues.

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Finishing (composite restoration)

A procedure that corrects contours, smoothes margins, and removes irregularities from a composite restoration. It's like creating a refined shape before the final polish.

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Polishing (composite restoration)

A technique used to create a smooth, lustrous finish on a composite restoration. It makes the surface look and feel like natural teeth.

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Overextension (composite restoration)

Overfilling or excess material beyond the prepared tooth surface. It can interfere with proper function and increase the risk of plaque accumulation.

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Flash (composite restoration)

A sharp or undefined edge of the composite restoration where it meets the tooth. It can irritate gums and facilitate plaque buildup.

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Overhang (composite restoration)

A composite restoration that extends beyond the intended contour of the tooth. It can interfere with biting and contribute to plaque accumulation.

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Open Margin (composite restoration)

A gap between the composite restoration and the tooth. It can allow bacteria and debris to collect, leading to decay and restoration failure.

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Premature Occlusal Contact (composite restoration)

A situation where the composite restoration is too high and interferes with proper biting. It can cause discomfort and damage to other teeth.

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Curved Scalpel Blade

A curved scalpel blade with a single cutting edge on the inside curve. Used for removing interproximal overhangs and flash.

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Scalpel Blade Handling

Hold the blade at a slight acute angle, with the cutting edge in contact with the tooth surface. Follow tooth contours, shaving excess composite rather than carving.

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Finishing Burs: Constant Motion

Keep the finishing bur in constant motion to avoid gouging the restoration or tooth surface.

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Finishing Disks

Used for smoothing restorations extending onto the facial or lingual surface. Some manufacturers offer color-coded disks with varying abrasiveness, like Sof-Lex.

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Finishing Disks: Technique

Apply disks using smooth, deliberate, intermittent brush strokes, starting from tooth structure to restoration to remove flash.

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Finishing Strip

A strip with a non-abrasive center used to smooth proximal contact areas. "Floss" the strip through the contact, then gently pull over the surface or margin.

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Finishing Strip: Precaution

Position the finishing strip gingival to the proximal contact carefully to avoid opening the contact area. Repeat as needed to achieve smoothness.

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Composite Finishing and Polishing

The process of shaping and smoothing a composite restoration to achieve proper contours, margins, and a polished surface.

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Coarse to Fine Abrasive Progression

The finishing and polishing process uses a graded progression of abrasive instruments, starting with coarser grits and moving to finer grits to achieve a smooth surface.

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Heat Generation Control

Heat generated during finishing and polishing can cause discomfort or even damage to the tooth. It's important to use techniques that minimize heat generation.

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Isolation

Protecting the surrounding teeth and soft tissues during finishing and polishing is essential.

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Restoration Evaluation

Evaluating the composite restoration before, during, and after finishing and polishing ensures a proper and functional restoration.

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Patient Communication

The clinician should thoroughly explain the procedure, its purpose, and potential sensations to the patient.

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Instrument Selection

Choosing the right instruments, such as burs and polishing points, is essential for effective finishing and polishing.

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Polishing

The final step involves using polishing pastes and points to achieve a smooth, glossy surface that mimics the natural enamel of the tooth.

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Finishing

The process of shaping and perfecting a material to ensure proper fit and functionality. Focuses on structural integrity.

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Dental materials

Materials used in dentistry to restore missing or damaged tooth structure. They need to be strong, biocompatible, and aesthetically appealing.

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Biocompatibility

The ability of a material to be compatible with living tissue without causing harm or rejection.

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Strength (of dental materials)

The ability of a material to withstand forces like biting and chewing without breaking or failing.

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Wear resistance (of dental materials)

The ability of a material to resist wear and tear over time, ensuring its longevity.

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Use Low-Speed Tools

Using low-speed tools instead of high-speed tools to reduce heat buildup during polishing or finishing.

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Use Water or Cooling Agents

Applying water or cooling agents while working on dental materials to help dissipate heat and keep the surface cool.

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Composite Polishing

The final stage of restoring a composite filling, aiming to create a smooth, glossy surface. It involves removing imperfections and roughness to achieve a desirable, high-quality finish.

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Composite Finishing

The initial stage of restoring a composite filling, focusing on shaping and contouring the composite material to the desired form.

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Cavosurface Margin Smoothing

The process of smoothing out any rough edges or irregularities in the composite filling to achieve a smooth transition between the filling and the tooth.

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Occlusal Excess Removal

The process of removing excess composite material that may be in the area where the tooth bites.

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Occlusal Anatomy Definition

The process of restoring the natural anatomy of the tooth surface by shaping the composite filling to mimic the tooth's original form.

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Facial and Lingual Surface Smoothing

The process of smoothening the surfaces of the composite filling that are on the sides of the tooth, facing towards the cheeks and tongue.

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Preventing Pulp Overheating in Composite Polishing.

Maintaining a moist environment between the tooth and composite material during polishing helps prevent overheating and damage to the pulp. Therefore, moisture helps protect the delicate nerve inside the tooth during polishing.

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Benefits of Finishing and Polishing Composite Restorations

Finishing and polishing enhance a composite filling's aesthetics, durability, and long-term performance by making the surface smoother and increasing its resistance to staining and plaque build-up. However, it does not prevent excessive corrosion.

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Study Notes

Dental Materials - Finishing and Polishing

  • Purpose of Finishing and Polishing Composite Restorations:

    • Creates a smooth, consistent surface.
    • Makes the restoration easy for patients to clean.
    • Improves the longevity of the restoration.
    • Reduces the risk of recurrent cavities.
    • Promotes healthier surrounding tissues.

  • Frequency of Polishing vs. Refinishing:

    • Polishing is generally more frequent than refinishing for composite restorations.

  • Advantages of Finishing and Polishing:

    • Smooth, undetectable margins.
    • Plaque-resistant surface.
    • Healthier gingival tissues.
    • Increased lifespan of restoration.
    • Enhanced aesthetics.
    • Proper contours.

  • Methods to Achieve Benefits:

    • Proper smoothing and polishing helps ensure smooth cavosurface margins, restores functional anatomy, and creates a smooth surface, mimicking enamel.

Evaluation of Composite Restorations

  • Evaluation Timing: Composite restorations can be finished and polished immediately after placement—unlike amalgam.

  • Evaluation Factors:

    • Improper placement or incomplete finishing increases issues like recurrent caries, plaque build-up, periodontal disease, and restoration failure.
    • Composite restorations are evaluated regularly during dental exams to determine if any further finishing, cleaning, repair, or replacement is required.

Indications for Finishing and Polishing

  • Defects and irregularities:
    • Overextension/flash.
    • Premature occlusal contacts.
    • Overhangs.
    • Limited discoloration.
    • Limited recontouring needed.
    • Small chips or defects.

Indications for Repair or Replacement

  • Gross overextension/overhang.
  • Open margins.
  • Fractures.
  • Extensive discoloration.
  • Recurrent cavities.
  • Open proximal contacts.
  • Larger defects.

Procedure for Composite Finishing and Polishing

  • Assess the Restoration:

    • Dry the restoration.
    • Inspect for proper anatomical structure, chips, voids, stains, or other defects.
    • Evaluate occlusal and proximal contacts.
    • Examine margins with an explorer.
    • Verify proper contacts and gingival margins using dental floss.

  • Informing the Patient:

    • Discuss the procedure and explain the intent of steps.
    • Inform the patient of possible sensations like vibrations, mild discomfort, or a warming feeling during the procedure, especially when using a low-speed handpiece.

  • Gather Necessary Equipment:

    • Choose appropriate instruments based on the restoration and the clinician's preference, for example, mouth mirror, articulating paper, explorer, slow-speed handpiece, air-water syringe, cotton rolls, finishing burs, finishing strips, and polishing disks.

Finishing the Composite Restoration

  • Proximal Surfaces:

    • Use a curved scalpel blade to remove overhangs and flash, maintaining a safe distance from gingiva, ensuring no damage.
    • Flame-shaped finishing burs are used for smooth contours, margins, and the removal of overhangs and excess material. The burs should be held at a slight acute angle with the cutting edge on the inside curve of the blade. Smooth, deliberate intermittent brush strokes should be used on the tooth and restorations to prevent gouging or damage.

  • Finishing Disks: Used for areas extending to the facial or lingual surfaces.

  • Abrasive Disk System: Some disks use a color-coded gradation for varying degrees of abrasion, moving from coarse initial finishing to smoother fine polishing.

  • Finishing Strips: Specifically for proximal contacts. Follow specific technique to prevent damage to adjacent tooth areas.

Polishing

  • Polishing: Similar to finishing, but with finer abrasives and aiming for smooth, lustrous surface.
  • Occlusal Surfaces: Use polishing points, cups or disks with smooth strokes.
  • Facial/Lingual Surfaces: Similar to occlusal procedures. Use polishing points, disks or cups.
  • Composite Polishing Pastes: Frequently used for the final step in achieving a smooth, shiny finish, enhancing aesthetic appeal.

Considerations for Finishing and Polishing

  • Preventing Overheating: Use low-speed tools and cooling agents to prevent potential damage to the pulp.
  • Proper Sequencing: Following a system of progressive polishing (with successively finer abrasives) is vital.
  • Isolation: Use cotton rolls, dry angles, or a rubber dam to prevent damage to adjacent teeth or soft tissue during finishing and polishing.
  • Evaluation: Ensure all items from the skill performance evaluation are met before proceeding to polishing.

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Dental Materials - Finishing and Polishing

Description

This quiz covers the essential aspects of finishing and polishing composite restorations in dentistry. It highlights the purpose, advantages, and methods for achieving a smooth and durable surface for better oral health outcomes. Test your knowledge on the frequency of polishing versus refinishing and the evaluation of composite restorations.

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