Orthodontics: Class II and III Elastics

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Questions and Answers

What do Class II Elastics connect?

U3's to L6's

U3's to L5's

Both A and B (correct)

None of the above

What is the definition of Class III Elastics?

U6's to L3's or U5's to L3's

What do Posterior Cross Bite Elastics connect?

Lingual U6's to Buccal L6's or Lingual U6,7 to Buccal L6,7

What is the connection for Anterior Vertical Elastics?

U1's to L2's Signup and view all the answers

What is the connection for Class II Box Elastics?

U3,4's to L4,5's Signup and view all the answers

What is the connection of Triangle Elastics?

U3's to L3,4 Signup and view all the answers

What is the weight of RAM Elastic?

6 Oz Signup and view all the answers

What is the weight of IMPALA Elastic?

6 Oz Signup and view all the answers

What is the weight of PARROT Elastic?

2 Oz Signup and view all the answers

What is the weight of QUAIL Elastic?

2 Oz Signup and view all the answers

What is the weight of PENGUIN Elastic?

3-1/2 Oz Signup and view all the answers

What is the connection for Midline Elastic?

UL2 to LR2 or UR2 to LL2 Signup and view all the answers

What are posterior teeth?

Premolars and molars located in the back portion of the mouth Signup and view all the answers

What is enamel?

The very hard surface, which covers the crown of the teeth Signup and view all the answers

What does distal refer to?

The surface of the tooth facing away from the midline Signup and view all the answers

What does mesial refer to?

The surface of the tooth facing towards the midline Signup and view all the answers

What is the interproximal surface?

Between two teeth Signup and view all the answers

What does lingual refer to?

The surface of the tooth that faces toward the tongue Signup and view all the answers

What does congenitally mean?

Born without Signup and view all the answers

What is an unerupted tooth?

Tooth that is not pushed through the gum Signup and view all the answers

What is an appliance in orthodontics?

Anything the orthodontist utilizes to move your teeth or change the shape of your jaw Signup and view all the answers

What is a bracket?

A metal or clear piece that is glued onto the tooth and serves as a means of fastening the arch wire Signup and view all the answers

What is a mouth guard?

Device used to protect your mouth from injury while participating in sports Signup and view all the answers

What is a separator?

A rubber part used to create space between your teeth Signup and view all the answers

What is the role of wax in orthodontics?

Used to prevent braces from irritating lips Signup and view all the answers

What are orthodontic instruments?

Never called tools Signup and view all the answers

What is bonding in orthodontics?

The process of attaching brackets to your teeth Signup and view all the answers

What is a ceph x-ray?

X-ray of the head that shows whether your teeth and jaws are aligned properly Signup and view all the answers

What is a panoramic x-ray?

An x-ray that rotates around the head and gives you a picture of the teeth and jaws Signup and view all the answers

What is a consultation in dentistry?

A meeting with your doctor where he discusses treatment plan Signup and view all the answers

What does debanding/debonding refer to?

Removal of brackets and bands Signup and view all the answers

What are extraoral photographs?

Pictures of the patient's face Signup and view all the answers

What are impressions in dentistry?

A mold used to make a model of the teeth Signup and view all the answers

What is enamelplasty?

Reshaping of occlusal or incisal surfaces of teeth Signup and view all the answers

What is alginate used for?

Plaster to take impressions Signup and view all the answers

What is a bite plane?

Appliance to open a deep bite Signup and view all the answers

What does NiTi stand for?

AW that has memory and allows for rapid tooth movement Signup and view all the answers

What is archform?

Shape of dental arch Signup and view all the answers

What is a deep bite?

Upper teeth cover lower teeth when you bite down, excessive overbite Signup and view all the answers

What is a crossbite?

Upper teeth are inside of lower teeth Signup and view all the answers

What is crowding in dentistry?

Too many teeth in too small of a space Signup and view all the answers

What is crown angulation?

Root of the tooth is tipped forward or backward to correct the angle of the crown Signup and view all the answers

What does crown inclination refer to?

Signup and view all the answers

What is acid etch?

Cleans surface of teeth for bonding Signup and view all the answers

What is a color tie?

On Damon brackets they are used only for decoration Signup and view all the answers

What is a power chain?

A stretchable plastic chain used to consolidate space Signup and view all the answers

What is a band in orthodontics?

A metal ring that is placed around your teeth Signup and view all the answers

What is an arch wire?

A metal wire which is attached to your brackets to move your teeth Signup and view all the answers

What does deciduous refer to?

Baby teeth Signup and view all the answers

What does congenital mean?

Born with, present at birth Signup and view all the answers

What are facial surfaces of teeth?

Labial and buccal surfaces of the teeth Signup and view all the answers

What does buccal refer to?

The cheek surface of a tooth Signup and view all the answers

What is the mandible?

Lower jaw Signup and view all the answers

What is the maxilla or maxillary?

Upper jaw Signup and view all the answers

What are anterior teeth?

Incisors and canines located in the front portion of the mouth Signup and view all the answers

Study Notes

Class II and Class III Elastics

Class II elastics connect U3's to L6's or U3's to L5's, aiding in correcting bite discrepancies.
Class III elastics facilitate adjustment by linking U6's to L3's or U5's to L3's.

Specialized Elastics

Posterior Cross Bite elastics run from lingual U6's to buccal L6's or across lingual U6,7 to buccal L6,7, correcting posterior crossbites.
Anterior Vertical elastics connect U1's to L2's, used for vertical alignment in the front teeth.
Class II Box elastics link U3,4's to L4,5's for comprehensive bite correction.
Triangle elastics tie U3's to L3,4 in specific orthodontic adjustments.

Elastic Varieties by Size and Weight

RAM Elastic: (1/4") weighing 6 Oz, often used for contrast in tension.
IMPALA Elastic: (3/16") weighing 6 Oz, commonly employed in orthodontic treatment.
PARROT Elastic: (5/16") weighing 2 Oz, intended for lighter applications.
QUAIL Elastic: (3/16") weighing 2 Oz, utilized for variety in treatment.
PENGUIN Elastic: (5/16") weighing 3-1/2 Oz, serves different pressure needs.

Tooth and Mouth Anatomy

Posterior teeth refer to premolars and molars at the back of the mouth, playing a crucial role in chewing.
Enamel is the hard outer layer of teeth that protects against decay.
Distal surface: tooth facing away from the midline; Mesial surface: facing towards the midline.
Interproximal surface is located between adjacent teeth, significant for dental hygiene.
Lingual surface faces the tongue, important for understanding tooth positioning.

Dental Conditions and Procedures

Congenially refers to being born without certain teeth.
Unerupted teeth are those that have not protruded through the gum line.

Orthodontic Tools and Appliances

Appliances are devices orthodontists use for movement or shaping jaws and teeth.
Brackets are metal or clear components bonded to teeth, serving as anchors for arch wires.
Mouth guards protect teeth during sports, preventing injuries.
Separators are rubber devices that create space between teeth, essential for preparation for braces.
Wax is applied to prevent braces from causing irritation inside the mouth.

Orthodontic Procedures

Bonding is the procedure of attaching brackets to teeth securely.
Cephalometric (ceph) x-ray assesses alignment of teeth and jaws.
Panoramic x-ray gives a comprehensive view of all teeth and jaws in one image.
Consultations involve discussing treatment plans with the orthodontist.
Debanding/Debonding refers to the removal of brackets and bands at the end of treatment.

Modeling and Impressions

Impressions create molds for dental models, functioning as a crucial diagnostic tool.
Enamelplasty reshapes occlusal or incisal surfaces of the teeth, enhancing aesthetics.
Alginate is a material used for taking dental impressions.

Bite and Alignment Issues

A bite plane is an appliance opening a deep bite, impacting occlusion.
NiTi (Nickel Titanium) wires offer memory characteristics, allowing efficient tooth movement.
The arch form represents the shape of the dental arch, essential for planning ortho treatment.
Deep bite occurs when upper teeth excessively cover lower teeth.
Crossbite is the condition where upper teeth are positioned inside lower teeth.
Crowding arises when there is inadequate space for teeth in the dental arch.

Teeth Anatomy Terminology

Crown angulation involves tilting the root of a tooth to adjust the crown angle.
Acid etch cleans tooth surfaces for effective bonding.
Color ties on Damon brackets serve primarily decorative purposes.
Power chains help consolidate space in orthodontic treatment.
Bands are metal rings encircling teeth, providing a stable place for brackets.
Arch wires are metal wires attached to brackets, essential for the movement of teeth.
Deciduous teeth refer to primary or "baby" teeth that eventually fall out.
Congenital describes conditions or traits present at birth.
Facial surfaces encompass labial and buccal areas of teeth.
Buccal refers specifically to the surface of teeth adjacent to the cheeks.
The Mandible is the lower jaw, while Maxilla refers to the upper jaw.

Anterior Teeth

Anterior teeth include incisors and canines, located at the front of the mouth, crucial for cutting food.

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Description

This quiz covers various types of orthodontic elastics, including Class II and III elastics, posterior cross bite elastics, and anterior vertical elastics. Each question presents a specific type of elastic along with its corresponding definition. Test your knowledge on these essential orthodontic concepts!