Occlusion (Distal occlusion) To : Anna Mechekhia by ; mohammed al- maleesi & Raed khalid
Occlusion contact of opposing surface of teeth of two jaw
Disclusion contacting of designated groups of teeth in order to disallow any contacting of other groups of teeth . Anterior discclusion describe contacting of anterior teeth to prevent occlusion of posterior teeth during eccentric closures of mandible
ANGLE’S CLASSIFICATION OF MALOCCLUSION CLASS I M A L O C C L U S I O N CLASS II MA L O C C L U S I O N CLASS III M A L O C C L U S I O N DIVISION 1 DIVISION 2 CLASS III PSEUDO CLASS III SUB-DIVISION SUB-DIVISION
There are two modifications of Angle’s classification Lischer’s modification. Dewey’s modification.
He introduced following names to the Angle’s classification: Neutrocclusion- Class I. Distocclusion- Class II. Mesiocclusion- Class III
C. Class II Malocclusion (Distal Occlusion)
Class II Malocclusion with Anterior Overjet
Class II Malocclusion, Division II, Often Exhibits Deep Overbite with Maxillary Central Incisors Tipped Lingually but Laterals Tipped Labially
Class II Malocclusion, Division I, May Exhibit Considerable Overjet (Often with All Maxillary Incisors Tipped Labially )
Distal occlusion Proximal or Distal Occlusion An enlarged frontal tooth phase (characteristic of a distal bite) applies of a sagittal distance of 5 mm or more is measured between the incisors of the upper and lower jaws in terminal occlusion .
The lower jaw usually registers a posterior position ( retrogenia ), whereby the front of the upper jaw can be tilted either forwards or backwards. Distal occlusion (one premolar width)
Maxilla lies ahead of mandible with refrence to anteroir cranial base. In other words maxilla is prgnated. SKELETAL CLASSIFICATION