L18-Ortiz-Maxillomandibular Records.txt

MAXILLO - MANDIBULAR RECORDS FOR COMPLETE DENTURES PROSTHODONTICS DEPARTMENT LILIANA ORTIZ CAMACHO,DDS R E V I E W LECTURE OBJECTIVES • Vertical Dimension • Centric Relation • Facebow Record • Protrusive Record OCCLUSAL RIMS •Tray Base •Wax Rim OCCLUSAL RIMS Tray Base Cast Protection Undercut relie...

MAXILLO - MANDIBULAR RECORDS FOR COMPLETE DENTURES PROSTHODONTICS DEPARTMENT LILIANA ORTIZ CAMACHO,DDS R E V I E W LECTURE OBJECTIVES • Vertical Dimension • Centric Relation • Facebow Record • Protrusive Record OCCLUSAL RIMS •Tray Base •Wax Rim OCCLUSAL RIMS Tray Base Cast Protection Undercut relief Triad OCCLUSAL RIMS • Measurement of Occlusal Rims • Anterior – 5mm • Posterior – 8mm • Height • Posterior limit VERTICAL DIMENSION • Vertical Dimension of Rest • Vertical Dimension of Occlusion VERTICAL DIMENSION Vertical dimension of rest VDR: Rest relation is the habitual postural position of the mandible to the maxillae when the patient is resting comfortably in the upright position and the condyles are in a neutral unstrained position in the glenoid fossa, with minimum tonic contraction of the mandibular musculature to maintain posture. VERTICAL DIMENSION Vertical dimension at occlusion VDO: The vertical dimension of the face when the teeth on occlusal rims are in contact in centric relation. VERTICAL DIMENSION Different techniques for VDR-VDO • Pre-extractions records • Physiologic rest position • Measuring of closing forces • Phonetics • Esthetics • Facial dimensions Turrell AJ. 2006 Aug;96(2):79-83. Clinical assessment of vertical dimension. 1972 MAXILLO - MANDIBULAR RECORDS Lip Support FACEBOW The instrument that carries the relationship between the maxilla and the condyles from the patient to the articulator FACEBOW Mounted casts relate the hinge axis of the articulator as nearly as possible to the same way the jaws relate to the patient’s arc of closure CENTRIC RELATION Maxillo-mandibular relationship, independent of tooth contact, in which the condyles articulate in the anterior-superior position against the posterior slopes of the articular eminences • The mandible is restricted to a purely rotary movement • Unstrained, physiologic, maxillo-mandibular relationship • Clinically useful, repeatable reference position CENTRIC OCCLUSION RECORD • Maxillary • Shallow V grooves • Mandibular – • Reduce height 2mm distal to canine • Replace wax with dead soft wax PROTRUSIVE RECORD A registration of a forward position of the mandible with reference to the maxilla SUMMARY • Vertical Dimension • Centric Relation • Facebow Record • Protrusive Record