Instrument design and recognition 1

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Questions and Answers

What is the primary function of the first 3mm of the working end in dental tools?

To provide a comfortable grip for the user

To enhance tactile sensitivity (correct)

To withstand pressure for heavy calculus removal (correct)

To create a more traumatic experience for the patient

What is a key feature of periodontal probes that enhances their function?

They have millimeter markings. (correct)

They can measure temperatures.

They have sharp, pointed tips.

They are made of rigid materials.

What is an advantage of the rounded edge on periodontal probes?

It allows for easier insertion into periodontal pockets.

It provides a better grip for the clinician.

It reduces the potential for trauma during use. (correct)

It increases the force applied when measuring.

Which part of the working end is specifically designed for debridement?

Cutting edges Signup and view all the answers

How can the performance of dental tools be described based on their anatomical features?

Their micro-anatomical features allow for less traumatic procedures. Signup and view all the answers

Which of the following describes the working end of a periodontal probe?

It can be round or rectangular in cross-section. Signup and view all the answers

What type of instrument is commonly used alongside periodontal probes for deposit removal?

Scalers Signup and view all the answers

What component of the working end contributes to its effectiveness in procedures?

The lateral surfaces and cutting edges Signup and view all the answers

Which aspect makes explorers particularly useful in clinical assessments?

Their ability to resonate and provide tactile feedback. Signup and view all the answers

In the context of dental tools, what does the term 'face' refer to?

The surface from which the tool debulks calculus Signup and view all the answers

What shape variant can a periodontal probe have?

Rod shape. Signup and view all the answers

Which of the following statements about dental working ends is NOT true?

They rely on the entire length for effectiveness. Signup and view all the answers

What is NOT a function of periodontal probes?

Removing calculus deposits. Signup and view all the answers

In addition to their primary function, what is an additional utility of a ruler in periodontal assessment?

It can measure multiple aspects of periodontal health. Signup and view all the answers

What characterizes the working edge of site specific curettes?

They possess one cutting edge per working end. Signup and view all the answers

Which of the following statements is true regarding the use of site specific curettes?

They should exclusively be used sub-gingivally. Signup and view all the answers

What features distinguish the Gracey 1/2 curette from other instruments?

It has a rounded toe and a small working end suitable for sub-gingival applications. Signup and view all the answers

Which aspect is NOT a characteristic of site specific curettes?

They are effective in a full mouth instrumentation. Signup and view all the answers

For which types of teeth is the simple shank-anterior curette designed?

Anterior teeth, designed for sub-gingival procedures. Signup and view all the answers

Which feature is common among site specific curettes?

They feature a rounded side and a cutting side. Signup and view all the answers

What feature of the calculus allows it to be used without causing trauma to the gingival tissue?

Rounded back Signup and view all the answers

Which of the following correctly describes the cross-section of a Universal Curette?

Rounded toe Signup and view all the answers

What type of curette is specifically noted for minimizing trauma and protecting soft tissue?

Universal curette Signup and view all the answers

Which characteristic is NOT associated with the working end of molars?

Straight cutting edge Signup and view all the answers

In periodontal treatments, why is it essential for instruments to minimize tissue trauma?

To promote healing Signup and view all the answers

What is key to ensuring detailed access during dental procedures?

Proper curette design Signup and view all the answers

Which curette is named specifically to reach subgingival areas effectively?

Columbia 4-4R Signup and view all the answers

What design aspect of the curette helps in preventing excessive cutting into the dentine?

Round shoulder Signup and view all the answers

What advantage does a rounded toe of a curette offer during dental procedures?

Minimizes trauma Signup and view all the answers

Which design feature is primarily for cleaning in difficult-to-access areas during dentistry?

Narrow working end Signup and view all the answers

Study Notes

Working End

Most instruments use the first 3mm of the working end
The working end comes in different shapes, such as a sickle, a universal curette, and a site-specific curette.

Working End Micro Anatomy

The working end has a face, lateral surface, cutting edge, toe/tip, middle, and heel.

Periodontal Instruments

There are three types of periodontal instruments: explorers, sickles, and curettes.
Each type of instrument has a specific purpose.
Explorers are used to assess the sulcus or pocket and detect caries.
Sickles are used for removing large deposits of calculus.
Curettes are used for removing smaller deposits of calculus.

Periodontal Probes

Periodontal probes are assessment instruments.
The round shape of the probes helps to minimize trauma.
The probes are used to measure the depth of the sulcus or pocket and the position of the gingival margin.

Universal Curets

Universal curettes have a rounded back, two cutting edges, a rounded toe, and a semi-circular cross-section.
Universal curettes can be used on a variety of surfaces in the mouth.
Examples of universal curettes include the Columbia 4-4R, the McCall 135-14S, and the Barnhart.

Site-Specific Curettes

Site-specific curettes are designed for specific surfaces and areas of the mouth.
Site-specific curettes have a longer, more complex shank design.
Examples of site-specific curettes include Gracey curettes, the After Fives , and the Quetin furcation curettes.

Gracey Curettes

Gracey curettes have a small working end and a long, complex shank.
Gracey curettes are only used subgingivally.
Gracey 1/2 curette is typically used on anterior teeth.
Gracey 5/6, 9/10, and 11/12 curettes are typically used on posterior teeth.
Gracey 13/14 curette is typically used on distal surfaces of posterior teeth.
Gracey 11/12 curette pairs with the 13/14 curette.

Instrument Maintenance

Periodontal instruments require care and maintenance to be effective.
Instrument maintenance includes sharpening, cleaning, and sterilization.
Refer to the ergonomics and sharpening lecture for detailed information on instrument maintenance.

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Description

This quiz focuses on the anatomy and types of periodontal instruments, including explorers, sickles, and curettes. Understand the specific functions of these instruments and the micro anatomy of their working ends. Test your knowledge on how to utilize these tools effectively in dental practice.