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Anatomical landmarks in maxilla
Single band of fibrous connective Tissues, Needs to be properly relieved.
Extends from labial frenum into buccal frenum. Proper lip support ought to be offered .
Consist of one or more rings. Have to Be Relieved
Influenced by 3 muscles- Orbicularis oris (forward), Buccinator (backward), Caninus (ranking )
Buccal frenum into hamular notch
Influenced from Buccinator, Modiolus, Coronid process of mandible
Pterygomaxillary topnotch, Distal extension of denture,Situated between the tuberosity and hamulus of the medial pterygoid plate.
Posterior palatal seal region
the delicate tissues across the junction of the hard and soft palates on which stress within the physiologic limits of the cells can be applied by a denture to aid in the retention of the gut.
Synonyms: pole dam area, postpalatal seal area
Apartment regions as secondary retentive areas.
Flat palate (not superior support), V shaped palate (least favorable). Mucosa is firmly attached to the periosteum of the bone. Consist of dense collagenous fibers.
Considered as a secondary stress-bearing area as it is subject to resorption contrary to flat part of hard palate.
Resist the flat forces from the denture, Should not be over compressed.
Pad of fiberous connective tissue within incisive foramen, Good relief should be given.
Assist in arrangement of anterior teeth and jaw relation.
Mid palatine raphe
Junction of palatine process of maxilla. Covered by a slim mucosa, somewhat elevated or raised.
Suitable relief required. Landmark for place of vibrating line.
The medial & lateral walls withstand the flat and torquing forces that would go the denture foundation in lateral or palatal direction.
Therefore, maxillary denture foundation should cover the tuberosities and fulfill out the hamular notches.