Table of Contents
The Fulcrum is a finger rest which is used to stabilize the working hand during Periodontal treatment. A fulcrum gives precise control over the amount of pressure during each stroke.
What is the purpose of a fulcrum dental?
Grasp and fulcrum provide the foundation for activation, angulation, and adaptation. Activation is the movement of the instrument’s cutting edge against the tooth. Angulation refers to the angle between the face of the instrument blade and the surface of the tooth being instrumented.
What is finger finger fulcrum?
Finger-on-finger. Reinforced fulcrum: The fulcrum is placed on the same arch as you are working and close to the working area. The index finger from the opposite hand is pressed onto the shank of the instrument and gently applies pressure. This increases the lateral pressure when scaling (Figure 64).
When do you use the extraoral fulcrum?
Clinicians often use extraoral fulcrums for the maxillary posterior teeth with probes and explorers to enhance access to hard-to-reach surfaces, such as the distals of second or third molars. Also extraoral hand rests are routinely used during ultrasonic instrumentation.
What is an advanced fulcrum?
(ad-vanst fulkrŭm) Variation of an intraoral or extraoral finger rest used to gain access to root surfaces within deep periodontal pockets (e.g., modified intraoral, cross arch, opposite arch, finger-on-finger, and finger assist fulcrums).
How is the finger rest selected?
Finger rest selection should be based on convenience to area of instrumentation, ease of instrument adaptation, maintaining effective grasp, attaining correct angulations, stability of instrument, control of strokes, and clinician safety.
What is dental finger rest?
Abstract. One of the techniques taught in dental and dental hygiene programs is to use finger rests to stabilize the instrument while performing dental scaling or other types of dental work. It is believed that finger rests may also reduce muscle stress and prevent injury due to muscle fatigue.
What is the purpose of a fulcrum quizlet?
a fulcrum is a finger rest used to stabilize the clinician’s hand during periodontal instrumentation. used to gain access to root surfaces within periodontal pockets.
What is finger rest?
(fing’gĕr rest) The place on a structure (e.g., tooth) where the finger of the hand holding the instrument (i.e., fulcrum finger) is placed to provide stabilization and control during use of the instrument.
What is staining of teeth?
Types of Tooth Discoloration (Stains) It occurs when stain particles, such as pigmented residue from food or drink, build-up in the film of protein that covers the tooth enamel. Extrinsic tooth stains are typically caused by tobacco use or by regularly drinking coffee and tea, wine or cola drinks.
What is the most common dental chair position for procedures?
The patient is positioned with the head and heart parallel to the floor and the feet slightly elevated. Positioning the patient in this manner reduces the incidence of syncope that can occur as a result of increased anxiety.
What does a dental Hoe do?
Hoes and chisels are often overlooked in the general practice. The hoe can be very useful to remove large ledges of calculus and stain from supra-gingival areas on the facial and lingual surfaces (Figure 48). The hoe is used with a pull stroke. The blade is straight, and the toe has a 45º bevel.
When a finger rest Cannot be placed close to the working area what would the technique of choice be?
This is the most common treatment, and it’s usually effective for a year or more in most people treated. But sometimes it takes more than one injection. For people with diabetes, steroid injections tend to be less effective. Percutaneous release.
What is hand scaling?
Hand scaling is the traditional method of removing plaque. It is an effective technique, but takes a little longer and the some patients find the feeling of having their teeth scraped by metal a little uncomfortable.
What is pen grasp?
5.1. Pen grasp: The thumb, index finger, and middle finger are used to hold the instrument as a pen is held with each of the fingers engaging the instrument handle. Palm grasp: The instrument is held securely in the palm of the hand. This grasp is commonly used while using dental forceps.
What is thumb to nose grasp?
Thumb-to-nose grasp. The reverse Palm-thumb grasp is sometimes called the thumb-to-nose grasp: with this grasp the evacuator tip is held in the palm of the hand with the thumb directed toward the assistant instead of toward the patient.
What is the tooth numbering system called?
Although it is named the “universal numbering system”, it is also called the “American system” as it is only used in the United States. The uppercase letters A through T are used for primary teeth and the numbers 1 – 32 are used for permanent teeth.
What are periodontal instruments?
Periodontal scalers are dental instruments used in the prophylactic and periodontal care of teeth (most often human teeth), including scaling and root planing.
What is chronic periodontitis?
Chronic periodontitis is a common disease of the gums consisting of chronic inflammation of the periodontal tissues which is caused by the accumulation of large amounts of dental plaque. In the early stages, chronic periodontitis has few symptoms.
What is a modified pen grasp?
In a modified pen grasp, the instrument is held in the dominant hand with the pads of the index finger and thumb opposite each other on the handle closest to the working end. By keeping the index finger and thumb separated, the clinician can roll the instrument between these digits with ease and control.
When turning on the dental light over a patient seated and positioned?
The dental light should be as far above the patient’s head as possible while within the easy reach of the clinician. When instrumenting in the maxillary arch, the dental light is best positioned above the patient’s chest, tilted so that the beam shines into the oral cavity at an angle (Figure 2).
What is a fluoride needs assessment?
Terms in this set (17) A fluoride needs assessment helps determine: Individual need for a specific fluoride therapeutic program. After a professional application of gel or foam fluoride, how long should the patient be instructed to refrain from drinking water?.
What is meant by normal horizontal reach?
Normal Horizontal Reach. is the reach created by the sweep of the forearm with the upper arm held at the side. Maximum vertical reach. the reach created by the vertical sweep of the forearm while keeping the elbow at mid-torso level.
What is the most effective antimicrobial therapy available to reduce plaque and gingivitis?
CHLORHEXIDINE GLUCONATE Sold by prescription only in the U.S. at a 0.12% concentration and a pH of 5.5 to 6.0, CHX is the most effective anti-plaque/anti-gingivitis rinse available.
What is another term for finger rest?
What is another term for finger rest? Fulcrum.
Is the index finger?
The index finger (also referred to as forefinger, first finger, pointer finger, trigger finger, digitus secundus, digitus II, and many other terms) is the second digit of a human hand. It is located between the thumb and the middle finger. Index finger TA2 152 FMA 24946 Anatomical terminology.
What hand does the assistant used primarily to transfer instruments to a right handed dentist?
Chairside Ch 32 Dental Office & Ch 33 Delivering dental care A B in relation to the seated operator how is the assistant positioned 4 to 6 inches lower than the operator what hand is primarily used to transfer instruments to a right handed dentist left indirect vision could be used for occlusal area of tooth number 3.
