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  2. Orthodontic indices - Wikipedia

    en.wikipedia.org/wiki/Orthodontic_indices

    Angle classification: Class II Division 1 Angle classification: Class II Division 2 Angle classification: Class III. Angle's Classification is devised in 1899 by father of Orthodontic, Dr Edward Angle to describe the classes of malocclusion, widely accepted and widely used since it was published.

  3. Malocclusion - Wikipedia

    en.wikipedia.org/wiki/Malocclusion

    Class II Division 2: The molar relationships are Class II but the central are retroclined and the lateral teeth are seen overlapping the centrals. Class III: (Mesiocclusion (prognathism, anterior crossbite, negative overjet, underbite)) In this case the upper molars are placed not in the mesiobuccal groove but posteriorly to it. The mesiobuccal ...

  4. Overjet - Wikipedia

    en.wikipedia.org/wiki/Overjet

    Class II Division I is an incisal classification of malocclusion where the incisal edge of the mandibular incisors lie posterior to the cingulum plateau of the maxillary incisors with normal or proclined maxillary incisors (British Standards Index, 1983). There is always an associated increase in overjet.

  5. Occlusion (dentistry) - Wikipedia

    en.wikipedia.org/wiki/Occlusion_(dentistry)

    Class II: Mandibular incisors contact the maxillary incisors on the palatal surface, in the gingival third or posterior to the cingulum. This class may be further subdivided into division I and division II: Division I includes maxillary incisors which are proclined (90%) and these individuals have a greater horizontal overlap - this is termed ...

  6. Edward Angle - Wikipedia

    en.wikipedia.org/wiki/Edward_Angle

    Class III: The lower molar being mesial to its counterpart, again without a noted line of occlusion. [5] The Angle classification divides occlusion and malocclusion into four distinct classes: normal occlusion, Class I, II, and III. Although both normal occlusion and Class I have the same molar alignment relationship, there is a distinction in ...

  7. Open bite malocclusion - Wikipedia

    en.wikipedia.org/wiki/Open_bite_malocclusion

    Anterior open bite resulted from tongue thrusting in a 24 y.o. patient. Anterior upper teeth are not touching their counterpart. Anterior open bite (AOB) is defined as a condition in which there is no contact and no vertical overlap of the lower incisor crown with the upper incisor crown when the mandible is in full occlusion. [19]

  8. Elastics (orthodontics) - Wikipedia

    en.wikipedia.org/wiki/Elastics_(Orthodontics)

    Orthodontists generally use 12-16 oz elastics (3/16") in extraction cases or 2× 6 oz elastics on either side of the mouth (3/16"), but in non extraction cases 16-20 oz elastics (3/16") or 2× 8 oz elastics are used. It is very important to know the side effects of Class II elastics before using them in an orthodontic treatment.

  9. Frankel appliance - Wikipedia

    en.wikipedia.org/wiki/Frankel_appliance

    This appliance had Type A, B and C. The difference between A and B was the lower lingual loops in one and lower lingual shield in another. This was mainly used for Class 1 and Class 2 Division 1 malocclusion. Acrylic Components. Buccal Shield - They were about 2.5mm thick and their goal was to expand the soft tissue capsule in the back.