舌侧集中与无尖牙.ppt

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舌侧集中与无尖牙

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Adjusting Monoplane Occlusion Main adjustment is flat If heavy prematurity near fossa, slightly shallow fossa * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * What type of Contact? What type of Contact? What type of Contacts? What type of Contact? Assess Contacts Centric Stops Excursions Non-Balanced Lingualized Occlusion Maxillary anatomic opposing mandibular non-anatomic Mortar pestle occlusion without maxillary buccal cusp contact Lack of mandibular cusp angles and no attempt to balance the occlusion No compensating curves No overbite No overbite Magnitude of Overjet More for Class II patients Class I Class II Magnitude of Horizontal Overlap Class III patients Little or no overjet Class III Setting the posterior teeth Teeth should end prior to the ascending ramus Mandibular teeth set to a flat plane and on the plane of occlusion Maxillary lingual cusps contact central groove/marginal ridge of the opposing teeth The horizontal overlap should be ideal and should be sufficient to prevent biting of the cheek and corner of the mouth Horizontal overlap All maxillary teeth, with the exception of the lateral incisors and cuspids, should be on the plane of occlusion Reestablish centric contacts as necessary Balancing Ramp If bilateral balance is desired a balancing ramp can be generated In lateral excursions, at least three points of contact (both balancing ramps and anterior incisor contacts) Bilateral balance with Balancing Ramps Working Balancing Monoplane Occlusion Monoplane Occlusion Cuspless teeth (0°) on a flat plane with 1.5-2.0?mm overjet No cusp to fossa relationship No anterior contacts in centric position Monoplane Occlusion Eliminate cusps lateral forces reduced improves stability Simplifies tooth arrangement Monoplane Occlusion No overbite (would cause tilting) Overjet of 2 mm is used to create an illusion of overbite Monoplane Occlusion Excursions - may or may

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