- Lingualized Occlusion is a setup technique developed to enhance denture stability for patients with severe alveolar bone resorption resulting in little or no ridge, or resulting in a discrepancy between the size of the narrowing and receding upper ridge compared with the widening and receding lower jaw.
- This setup technique is also indicated for patients with implant-supported overdentures to eliminate lateral forces that can rock abutments loose over time.
- Lingualized occlusion is appropriate for free-end attachment cases to reduce stress on distal extension, or for intra-coronal attachments to avoid breakage.
- In a lingualized occlusion scheme, the objective is the elimination of buccal cusp contacts in order to alleviate lateral stresses or lateral dislodging forces.
- In lingualized occlusion, the lingual cusps of the upper posteriors make contact in centric relation in the central fossae of the lower posteriors.
- The buccal cusps are out of contact; however the lingual cusps are in contact in centric, working and balancing movements.
- For this reason, all the stresses created during working and balancing motions are of a downward nature, thus creating stability.
Ref: Jim Collis
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