Angle and Black's Classifications Quiz

Questions and Answers

What is Class I occlusion characterized by?

Molar max first occluding with the mandibular groove of the mandibular first molar. (correct)

Decay on incisal edges of anterior teeth.

Protrusion of maxillary anterior teeth.

Distal surface of the mandibular canine is distal to the mesial surface of the maxillary canine.

What is the profile associated with Class II Division I malocclusion?

Retrognathic profile

What does Class II Division II typically involve?

Maxillary incisors either upright or retruded

What is the profile associated with Class III malocclusion?

Prognathic profile Signup and view all the answers

What is the term for Class III occlusion?

Prognathic Signup and view all the answers

What does the term 'mesognathic' refer to?

Class I occlusion and Class II Division II Signup and view all the answers

What is indicated by a retrognathic profile?

Class II Division I Signup and view all the answers

What does Class V decay involve?

Decay on the gingival third of facial or lingual surfaces. Signup and view all the answers

What does an overjet measure?

Horizontal measurement between maxillary and mandibular teeth. Signup and view all the answers

What does an open bite indicate?

A lack of vertical overlap of the maxillary incisors. Signup and view all the answers

What is the definition of 'interference' in dentistry?

When one tooth hits before the rest of the teeth. Signup and view all the answers

What does 'centric occlusion' describe?

Normal occlusion. Signup and view all the answers

What is a crossbite?

Maxillary teeth are positioned lingual to or totally facial to mandibular teeth. Signup and view all the answers

What is the term for when anterior teeth meet end to end?

Edge to edge occlusion Signup and view all the answers

Study Notes

Angle Classification of Malocclusion

Class I:
- Maxillary first molar occludes with the mandibular groove of the mandibular first molar.
- Maxillary canine occludes with distal half of mandibular canine and mesial half of the mandibular first molar.
- Mesognathic facial profile indicated.
Class II Division I:
- Maxillary first molar occludes mesial to the mandibular first molar's groove.
- Anterior teeth are facially protruding.
- Retrognathic profile noted.
Class II Division II:
- Mandibular canine positioned distal to the maxillary canine by width of a premolar.
- Maxillary incisors are upright or retruded.
- Mesognathic profile observed.
Class III:
- Maxillary first molar occludes distal to the mandibular first molar's groove.
- Prognathic profile characterized.

Decay Classification

Class I:
- Decay present in pits and fissures of occlusal surfaces.
- Treatment may include amalgam or composite material.
Class II:
- Decay on proximal surfaces of premolars and molars.
- Diagnosis often through radiographs; requires silver amalgam or gold/porcelain inlay for extensive cases.
Class III:
- Decay on proximal surfaces of anterior teeth.
- Composite material typically used.
Class IV:
- Decay in proximal surfaces of anterior teeth affecting incisal edge or angle.
- Treatment may involve composite or porcelain crown for extensive decay.
Class V:
- Decay located on the gingival third of facial or lingual surfaces.
- Posterior teeth usually treated with silver amalgam; anterior often with composite.
Class VI:
- Decay affecting incisal edges of anterior teeth and cusp tips of posterior teeth.
- Often caused by abrasion; composite resins preferred.

Other Key Terms

Overjet: Horizontal distance between maxillary and mandibular incisors.
Overbite: Vertical distance between maxillary and mandibular incisors.
Interference: Occurs when one tooth contacts before the others.
Centric Occlusion: Refers to the normal occlusion of the teeth.
Tongue Thrust: Improper tongue positioning during swallowing, exerting up to 4 lbs of pressure; difficult to correct.
Crossbite: Misalignment where maxillary teeth are positioned lingually or facially to mandibular teeth.
Open Bite: Lack of vertical overlap of maxillary incisors results in an opening of anterior teeth.

Tooth Version Terminology

Mesioversion: Tooth tilted toward the midline.
Distoversion: Tooth tilted away from the midline.
Linguoversion: Tooth is positioned lingual to normal.
Labioversion/Buccoversion: Tooth tilts toward the lips.
Infraversion: Tooth is below the occlusal line, inadequately erupted.
Supraversion: Tooth is above the occlusal plane in maxilla or below in mandible.
Axioversion: Tooth is tipped or inclined.
Torsiversion: Tooth is rotated or twisted.
Transversion: Tooth positioned incorrectly in the dental arch.

Crossbite Types

Posterior Crossbite: Posterior teeth are either buccal or lingual to their normal position.
Anterior Crossbite: Maxillary incisors are positioned lingually to the mandibular incisors.

Occlusion Types

Edge to Edge Occlusion: Maximum and minimum anterior teeth's incisal surfaces meet.
End to End Occlusion: Cusps of maxillary teeth occlude directly with mandibular teeth.

Description

Test your knowledge on Angle classifications and Black's classifications of malocclusion with this interactive quiz. Each card presents a classification with definitions to help you learn and memorize essential orthodontic terms.