Podcast
Questions and Answers
Which of the following instruments are classified as cutting instruments?
Which of the following instruments are classified as cutting instruments?
What materials are commonly used in the construction of hand instruments?
What materials are commonly used in the construction of hand instruments?
Which component is NOT part of the basic design of hand instruments?
Which component is NOT part of the basic design of hand instruments?
What defines a rotary cutting instrument?
What defines a rotary cutting instrument?
Signup and view all the answers
Which type of hand piece is classified by its shape?
Which type of hand piece is classified by its shape?
Signup and view all the answers
Which type of instruments are designed for cutting in fixed prosthodontics?
Which type of instruments are designed for cutting in fixed prosthodontics?
Signup and view all the answers
What is the primary function of cutting instruments in dentistry?
What is the primary function of cutting instruments in dentistry?
Signup and view all the answers
Which of the following is NOT classified as a hand cutting instrument?
Which of the following is NOT classified as a hand cutting instrument?
Signup and view all the answers
Which of these instruments is an example of a hand cutting instrument?
Which of these instruments is an example of a hand cutting instrument?
Signup and view all the answers
What distinguishes powered (rotary) cutting instruments from hand cutting instruments?
What distinguishes powered (rotary) cutting instruments from hand cutting instruments?
Signup and view all the answers
Which of the following dental instruments is used primarily for excavating dental caries?
Which of the following dental instruments is used primarily for excavating dental caries?
Signup and view all the answers
What is a primary characteristic of laser equipment in dentistry?
What is a primary characteristic of laser equipment in dentistry?
Signup and view all the answers
Which type of cutting instrument includes tools like enamel hatchets and gingival marginal trimmers?
Which type of cutting instrument includes tools like enamel hatchets and gingival marginal trimmers?
Signup and view all the answers
What is the power source classification for a contra angle handpiece?
What is the power source classification for a contra angle handpiece?
Signup and view all the answers
How is the rotational speed of an instrument measured?
How is the rotational speed of an instrument measured?
Signup and view all the answers
What classification is assigned to speeds above 200,000 rpm?
What classification is assigned to speeds above 200,000 rpm?
Signup and view all the answers
Which of the following is NOT a common design element of rotary cutting instruments?
Which of the following is NOT a common design element of rotary cutting instruments?
Signup and view all the answers
Which type of shank design is characterized by adaptability to various handpieces?
Which type of shank design is characterized by adaptability to various handpieces?
Signup and view all the answers
What materials are commonly used for dental burs?
What materials are commonly used for dental burs?
Signup and view all the answers
How are abrasive instruments often classified?
How are abrasive instruments often classified?
Signup and view all the answers
What is the primary benefit of using diamond instruments?
What is the primary benefit of using diamond instruments?
Signup and view all the answers
Which of the following shapes is NOT recognized for rotary cutting instruments?
Which of the following shapes is NOT recognized for rotary cutting instruments?
Signup and view all the answers
What comprises the design of a diamond instrument?
What comprises the design of a diamond instrument?
Signup and view all the answers
What distinguishes mounted type dental rotary instruments from demounted type instruments?
What distinguishes mounted type dental rotary instruments from demounted type instruments?
Signup and view all the answers
Which abrasive material is known for removing hard tooth structures through continuous air-driven action?
Which abrasive material is known for removing hard tooth structures through continuous air-driven action?
Signup and view all the answers
What is the primary mechanism of cutting used by burs?
What is the primary mechanism of cutting used by burs?
Signup and view all the answers
Which option correctly describes the use of lasers in dental treatment?
Which option correctly describes the use of lasers in dental treatment?
Signup and view all the answers
What is a key disadvantage of using abrasive equipment in a clinical setting?
What is a key disadvantage of using abrasive equipment in a clinical setting?
Signup and view all the answers
Which type of abrasive instruments are made by pressing a uniform mixture around a roughened shank end?
Which type of abrasive instruments are made by pressing a uniform mixture around a roughened shank end?
Signup and view all the answers
What distinguishes diamonds in cutting efficiency compared to carbide burs?
What distinguishes diamonds in cutting efficiency compared to carbide burs?
Signup and view all the answers
What type of backing is commonly used in coated abrasive instruments?
What type of backing is commonly used in coated abrasive instruments?
Signup and view all the answers
What is a primary application of dental abrasive equipment?
What is a primary application of dental abrasive equipment?
Signup and view all the answers
Which of the following best describes coated abrasive instruments?
Which of the following best describes coated abrasive instruments?
Signup and view all the answers
Study Notes
Dental Instruments
- Dental instruments are tools used in fixed prosthodontics to modify dental structures
- Cutting instruments cut, file, grind, plane, or smoothen dental structuresc
- Non-cutting instruments are used for tasks like condensation, examination, and exploration
- Hand cutting instruments include excavators, chisels, knives, files, scalers, and carvers
- Hand non-cutting instruments include amalgam condensers, mirrors, probes, and explorers
- Hand instruments are light in weight and made from carbon steel, stainless steel, or carbide
- Rotary cutting instruments are held and operated by a removable shank called a handpiece
- Handpieces are classified as straight, contra-angle, and based on their power source (air turbine or electric motor)
- Rotary instruments are categorized based on speed: low (below 12,000 rpm), medium (12,000-200,000 rpm), and high (above 200,000 rpm)
- Rotary cutting instruments consist of a head, neck, and shank
- There are three main shank designs: straight shank, latch-type shank, and grip-type shank
- Head design is further categorized into abrasive instruments and dental burs
- Dental burs are cutting instruments with bladed cutting heads, made from steel or carbide
- Dental burs are classified by size (head diameter in tenths of a millimeter) and shape (round, inverted cone, taper fissure, and end cutting)
- Abrasive instruments use small, angular particles of a hard substance embedded in a softer matrix material
- Abrasive instruments are classified as diamond instruments and other abrasives
- Diamond instruments consist of a metal blank, powder diamond abrasive, and metallic bonding material
- Diamond instruments are classified by size and shape: rounded end wheel, flame shape, fine taper, taper stone with flat end, and taper stone with round end
- Other abrasive instruments can be either molded or coated: molded instruments use a mixture of abrasive particles and matrix, while coated instruments have a layer of abrasive cemented to a flexible backing
- Dental rotary instruments are supplied as mounted (with mandrel attached) or demounted (requiring a separate mandrel)
- Abrasive instruments work by abrading or wearing, while dental burs cut by shearing (primarily from the sides)
- Diamond instruments are more efficient but produce rough surfaces, while carbide burs cut more slowly but create smoother finishes
- Laser equipment provides high-intensity light beams for soft and hard tissue modification
- Abrasive equipment uses aluminum oxide to rapidly remove hard tooth structures
- Clinical problems with abrasive equipment include lack of tactile sense, difficulty determining cutting progress, interference with visibility, and potential for inhalation
- Abrasive equipment applications include stain removal, pit and fissure de-pridment prior to sealing, and micro-mechanical roughening
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Explore the essential dental instruments used in fixed prosthodontics, focusing on both cutting and non-cutting tools. Learn about hand instruments, rotary cutting instruments, and their classifications. This quiz will enhance your understanding of the tools vital for modifying dental structures.
