GPT Terms – J

jacket crown: see CERAMIC CROWN, RESIN CROWN

Jackson crib clasp : a one-piece clasp bent to engage the mesial and distal interproximal undercuts in adjacent natural teeth. Usually it was made by hand bending of a straight wire of appropriate dimensions

Jackson magnet [Thomas R. Jackson, U.S. dentist]: eponym for permanent magnetic alloy magnets using rare earth metals adapted for oral use

jaw : the bony structure bearing the teeth—see MANDIBLE, MAXILLA

jaw malposition : any abnormal position of the mandible (GPT-3)

jaw movement: see MANDIBULAR MOVEMENT

jaw record: see MAXILLOMANDIBULAR RELATIONSHIP RECORD

jaw relation: see MAXILLOMANDIBULAR RELATIONSHIP

jaw relation record: see MAXILLOMANDIBULAR RELATIONSHIP RECORD

jaw repositioning: see MANDIBULAR REPOSITIONING

jig : a device used to maintain mechanically the correct positional relationship between a piece of work and a tool or between components during assembly or alteration

joint : the place of union of two or more bones—see ARTHRODIAL J., COMPOUND J., DIARTHRODIAL J., GINGLYMOUS J., SIMPLE J., TEMPOROMANDIBULAR J.

joint crepitus : the grating sensation caused by the rubbing together of the bony surfaces of joints—called also articular crepitus

junctional epithelium : a single or multi-layer of non-keratinizing cells adhering to the tooth surface at the base of the gingival crevice—called also epithelial attachment

jump case slang: see REBASE, RELINE

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