Dental Restorations Overview

<p>Homogenous thickness of 1.5-2.5mm (A)</p> Signup and view all the answers

<p>Need for special attention to marginal adaptation (A)</p> Signup and view all the answers

<p>Laboratory fees and number of appointments (B)</p> Signup and view all the answers

<p>Lack of reinforcing systems (A)</p> Signup and view all the answers

<p>Surface stain properties (D)</p> Signup and view all the answers

<p>Hollow-ground chamfer bevel or butt joint (D)</p> Signup and view all the answers

<p>Better color blending and seal (D)</p> Signup and view all the answers

<p>It prevents stress concentration (C)</p> Signup and view all the answers

<p>Curing the material outside the mouth (B)</p> Signup and view all the answers

<p>Improved marginal adaptation (C)</p> Signup and view all the answers

<p>Improves strength properties (D)</p> Signup and view all the answers

<p>Lower if done in clinic due to no lab fees (A)</p> Signup and view all the answers

<p>Feasibility of occlusal adjustment (A)</p> Signup and view all the answers

<p>40 degrees (A)</p> Signup and view all the answers

<p>Recommend an onlay (A)</p> Signup and view all the answers

<p>Color of the restoration material (A)</p> Signup and view all the answers

<p>Resistance is less critical for brittle materials than for cast gold. (C)</p> Signup and view all the answers

<p>Secondary flares (C)</p> Signup and view all the answers

<p>They can lead to open margins (D)</p> Signup and view all the answers

<p>It prevents warping of the handling wax pattern. (A)</p> Signup and view all the answers

<p>Patient demand for aesthetics (D)</p> Signup and view all the answers

<p>They involve occlusal and proximal surface(s) of posterior tooth. (B)</p> Signup and view all the answers

<p>They can cause thermal sensitivity. (A)</p> Signup and view all the answers

<p>Different types of metal alloys. (C)</p> Signup and view all the answers

<p>For restoring badly broken-down teeth. (A)</p> Signup and view all the answers

<p>They are designed to be esthetically pleasing. (B)</p> Signup and view all the answers

<p>They can have a high cost and require multiple appointments. (B)</p> Signup and view all the answers

<p>Highly esthetically sensitive areas. (A)</p> Signup and view all the answers

<p>They are inexpensive to produce. (B)</p> Signup and view all the answers

<p>3-50 degrees (A)</p> Signup and view all the answers

<p>To prevent the exposure of cement line (B)</p> Signup and view all the answers

<p>To make margins more self-cleansable (C)</p> Signup and view all the answers

<p>They must be well defined but not sharp (B)</p> Signup and view all the answers

<p>They should align with the horizontal plane (D)</p> Signup and view all the answers

<p>30 degrees, 0.5-1 mm width (D)</p> Signup and view all the answers

<p>Blunt and stronger enamel margin (D)</p> Signup and view all the answers

<p>30-40 degrees (C)</p> Signup and view all the answers

Indirect restorations that involve the occlusal and proximal surfaces of a posterior tooth.

Indirect restorations that cap one or more cusps of a tooth, providing extra strength. They can be made of metal or non-metal materials.

Metallic restorations can be made from various alloys, including gold, low gold, and base metals, each with unique characteristics.

Tooth-colored restorations made from ceramic materials or resin composites.

A precise metallic restoration fabricated outside the mouth to replace lost tooth structure. It is cemented in place in one piece.

Cast gold inlays are highly resistant to wear, corrosion, and discoloration. They offer excellent strength, dimensional stability, and biocompatibility.

Disadvantages include the unesthetic color, lack of adaptability to tooth margins, difficulty with retention, and high thermal conductivity.

Cast gold inlays are indicated for extensive tooth damage, deep cavities, cracked teeth, and restorations after root canals.

Internal walls of the cavity taper outwards towards the occlusal surface, providing a larger external outline compared to the internal one. This facilitates the seating of restorations made outside the mouth.

A smooth, angled edge at the junction of the restoration and the tooth. It allows for proper burnishing of the metal alloy, ensuring a tight fit and preventing exposure of cement.

A shortened bevel at the gingival margin, created using a gingival margin trimmer. It improves the seating of the restoration in this area.

Rounded, not sharp, angles within the cavity preparation, ensuring a smoother transition between different surfaces and better restoration adaptation.

Extending the margins onto the facial and lingual walls, making them easier to clean and access for finishing procedures - creates a protective cap around the tooth.

Secondary flares improve restoration retention by providing wider surfaces for the metal alloy to bond to the tooth, enhancing strength and stability.

Secondary flares create a blunter, stronger enamel margin that resists fracture.

Secondary flares create a sharper, more tightly fitting metal margin for a precise and secure fit.

The direction of the flare in the preparation should result in a 40-degree marginal metal angle. This angle provides a good balance between burnishability and strength.

Dental preparations with flares exceeding one-third of the intercuspal distance require an onlay restoration.

The strength of cast gold allows for bulkier restorations, reducing concerns about brittleness like direct restorative materials.

Beveling the axio-pulpal line angle strengthens the wax pattern, preventing warping during handling.

Parallel or perpendicular walls, rounded line angles, and sweeping curve outlines contribute to tooth resistance.

The degree of wall tapering, length, roughness, and cement type influence frictional retention.

Dovetails, occlusal locks, proximal grooves, reverse gingival bevels, and secondary flares enhance retention in proximal areas.

The increasing demand for esthetics has led to the widespread use of tooth-colored materials in posterior restorations.

Porcelain restorations were initially unsuccessful due to material weakness, poor integrity, and lack of suitable cement.

Reinforced porcelain and bonding techniques have improved the success and popularity of porcelain restorations.

Porcelain restorations blend well with natural tooth color, providing a long-lasting, aesthetic solution.

Porcelain restorations accumulate less plaque, promoting oral hygiene and preventing decay.

Porcelain restorations minimize thermal sensitivity, reducing discomfort from hot or cold foods.

Porcelain restorations can be bonded to tooth structure, increasing the strength and durability of the restoration.

Porcelain restorations require meticulous preparation and placement, demanding advanced techniques.

A dry field is essential for successful porcelain bonding, making moisture control crucial.

A smooth, flat transition between the tooth and the restoration, minimizing gaps and improving the seal.

A bevel with a gentle curve, exposing enamel rods perpendicularly for better bonding and blending with the tooth.

The internal angles of a preparation should be rounded for a smoother, more comfortable restoration. This is achieved by using a specific tool with a rounded tip.

Resin composite inlays offer many advantages over direct composite restorations, including reduced shrinkage due to curing outside the mouth, which helps prevent gaps and sensitivity.

Indirect resin composite inlays provide better control over the contact area and contours of the restoration, ensuring a more accurate and comfortable fit.

Indirect resin composite inlays offer superior marginal adaptation compared to direct methods, ensuring a tight seal and reducing the risk of decay.

The post-curing process for indirect resin composite inlays strengthens the material by improving its molecular structure.

Indirect resin composite inlays are repairable, making them a versatile and cost-effective choice for restorations.