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Tuesday, June 25, 2019

20 Top Dental Hygienist Interview Questions and Answers {Updated}

Dental Hygienist Interview Questions and Answers for experienced PDF, Read commonly asked Dental Hygienist Job Interview Questions with Answers PDF for Freshers.

Read Dental Hygienist Interview Questions and Answers

What is the role of Dental Hygienist?
The role of dental hygienist includes
• Assisting the dentist in the prevention and treatment of oral disease by monitoring the patient condition
• Scaling and polishing of teeth and gums using different types of dental tools
• Giving advice to the patient for maintaining their teeth

What would you suggest to a patient who wants to prevent tooth decay?
Tooth decay can be prevented in many ways like
• Brushing twice a day with floss.
• Maintenance of the gum margin
• Timely detection and prevention of gum disease
• Regular visit to a dental care facilities
• Teeth whitening and bleaching

What are the tools required for performing laser therapy?
Tools required for laser therapy are
• Micro-ultrasonic laser
• Laser light
• Fine hand instruments

Explain what is rubber cup polishing?
A rubber cup polishing is a tool that uses a polishing agent to remove the stain from the tooth surface by gently revolving it.

Explain what is site-specific laser therapy and when it is required?
When bacteria had infected the gum to a greater extent, such that it had reached deep into the bones, then it becomes necessary to remove it with laser light. When infected area is exposed to laser light it penetrates through the gums and bones and attacks the bacterial colony. This is known as site-specific laser therapy.

What is periodontal maintenance and what are the instruments used for it?
Periodontal maintenance is used to help maintain the result of treatment for periodontal disease. This specialized cleaning process is performed every 8, 10 or 12 weeks. The instruments that are used are micro-ultrasonic scale, fine hand instrument, polishing cup, and paste and laser light.

What is site-specific anti-biotic therapy?
To minimize the future growth of bacteria antibiotics are placed directly into the gum pockets.

Explain how Ultrasonic instrument works and what is it used for?
The ultrasonic instrument is used for removing plaque or tartar. The instrument uses tickling vibrations to knock larger pieces of tartar loose, and it also sprays a cooling mist of water while it works to wash away debris. It emits a high-pitched whistling sound.

On what basis does hygienist decide whether the patient should go for Scaling and Rootcanaling?
• The hygienist will first look out for the plaque buildup and checks for the possible periodontal problems
• It will check for sulcus, it is the depth of the spaces between your gum and teeth with a special device known as a periodontal probe
• Healthy tooth and gum have sulcus gap of about 3mm anything more than that may be due to dense plaque formation
• And based on the severity of the infection, scaling and root canaling is done

What is a rubber dam and its advantages?
A rubber dam is a rectangular latex sheet, which is used to cover the area of the mouth except for the tooth that is treated. It is used while performing a root canal and tooth surgery.
• It prevents bacteria present in saliva to spread out to your tooth
• You don’t get water into your throat
• It helps to keep the tooth dry
• It protects lips, cheeks, and internal part of the mouth while performing surgery
• You can relax your tongue instead of continuously adjusting during surgery
• It protects the throat from possible tooth debris

List out different types of filling used?
• Amalgam
• Glass Ionomer
• Composite Resin
• Cast Gold
• Ceramics

What is “galvanic shock”?
Galvanic shock is referred to an electrical shock that you might experience in your mouth if you had amalgam filling adjacent to gold filling. The electric current generates due to the interaction of two different metals. So, it is better not to have gold and amalgam filling adjacent to each other.

When is glass ionomer filling is used?
Glass ionomer fillings directly from chemical bondage with the tooth, due to which it takes minimum time for its formation. But this type of filling is relatively weak, and it is applied to soft surfaces or non-biting surface of the tooth like necks of the teeth or baby teeth. One benefit of this filling is that it releases fluoride from it that fights tooth decay.

What one should do if he/she knocks off the tooth out?
• Put the tooth straight into a cup of milk if it is completely ripped off, if not then let be in the mouth
• Do not pull out manually with force or jerks otherwise, it may damage the ligaments, which are required if the tooth has to be replaced
• Take painkillers if the pain is unbearable
• Don’t use clove oil or aspirin on the wound
• Visit a dentist or hospital without being getting panic
• Do not clean the tooth with disinfectant or let it dry out

Explain what is the difference between scaling and root planing?
• Root Planing: Root planing is the technique of smoothening the root surfaces and removing any infected tooth structure.
• Scaling: It is the process of removing dental tartar from the surfaces of the teeth

Explain what is the use of “Air Abrasion”?
Air abrasion can be used as
• Tooth Whitening
• While preparing a tooth for a filling, and act as a dreaded drill

What is the benefit of dental bridge and what are the types of dental bridges?
A dental bridge is a replacement for missing teeth; it protects from bone loss and disfiguration of facial structure too.
Types of bridges are
• Bounded or Maryland bridge
• Traditional bridge
• Cantilever bridge

On what occasion dental crown is suggested?
• To protect a fragile tooth from fracturing
• To restore a fractured tooth
• To attach a bridge
• To replace a large filling when there is not enough tooth remaining
• To cover a discolored or irregular shape tooth
• To cover a tooth that has gone under root canal treatment
• To cover a dental implant

Explain how dental sealants are placed?
First, the tooth surface is cleaned thoroughly
• After that tooth are washed with water and dry out
• Next, the acidic solution is applied to the fissure area of the tooth chewing surface for a few seconds and then rinsed off
• It creates a rough surface which enables dental sealant to stick the tooth surface firmly
• After the sealant are hardened by light or by using the two-component dental sealant

List out the tools that are used by a dental hygienist?
Hand Scalers
• Curettes
• Ultrasonic Scaler
• Rubber cup polisher
• Floss
• Saliva ejector
• Air and water syringe
• X-ray Sensor
• Intraoral Camera

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