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Occlusal forces are greater on molars when compared to premolars. Evidence (Fuzzi and Rapelli) has shown greater failure of Onlays and Inlays in molars than premolars over an 11.5 year period. [18] The most common cause for failure was porcelain fracture. To ensure longevity it is beneficial to avoid heavy occlusal forces.
Canine guidance during right lateral excursions (Institute of Dentistry University of Aberdeen) Canine Guidance. Dynamic occlusion that occurs on the canines (on the working side) during lateral excursions of the mandible. These teeth are best suited to accept horizontal forces in eccentric movements due to their long roots and good crown/root ...
A rough, flattish occlusal surface adapted for crushing and grinding; Cementum both above and below the gingival line; Enamel which covers the entire length of the body and likewise extends past the gum line; The cementum and the enamel invaginate into the thick layer of dentin; A mammal may have exclusively hypsodont molars or have a mix of ...
A cusp is an elevation on an occlusal surface of posterior teeth and canines. It contributes to a significant portion of the tooth's surface. Canines have one cusp. Maxillary premolars and the mandibular first premolars usually have two cusps. Mandibular second premolars frequently have three cusps--- one buccal and two lingual.
Occlusal trauma; Secondary occlusal trauma on X-ray film displays two lone-standing mandibular teeth, the lower left first premolar and canine. As the remnants of a once full complement of 16 lower teeth, these two teeth have been alone in opposing the forces associated with mastication for some time, as can be evidenced by the widened PDL surrounding the premolar.
The occlusal view is not included in the standard full mouth series. 1. Anterior oblique occlusal mandible – 45° Technique: the collimator is positioned in the midline, thru the chin aiming an angle of 45° to the image receptor which is placed centrally into the mouth, on to the occlusal surface of the lower arch. Indications:
Surfaces which form points of contact between adjacent teeth. [2] Axial A plane parallel to the surface of a tooth. For example, if a drill bur would be inserted into a tooth from any side (proximal, vestibular, oral), the depth of the hole is defined from the axial wall of the hole (from the long axis walls (vertical surfaces bounding the ...
The proximal surfaces of the pre-solder index abutment and pontic, showing lab-processed grooves for added retention of the acrylic resin The abutment and pontic joined with acrylic resin in a solder index and reinforced with an old bur (lying horizontally across the occlusal surface of the copings).