4 Pontic form except a Must be positioned and shaped so that it interdigitates with the opposing dentition b Should closely resemble the size contour and color of the tooth being replaced c Should...

Two capacitors are identical except that one is empty and the other is filled with a dielectric ( = 490) The empty capacitor is connected to a 220-V battery What must be the potential difference across the plates of the capacitor filled with a dielectric so that it stores the same amount of electrical energy as the empty capacitor

Current Attempt in Progress Two capacitors are identical except that one is empty and the other is filled with a dielectric ( k=48 ) The empty capacitor is connected to a 17-V battery What must be the potential difference across the plates of the capacitor filled with a dielectric so that it stores the same amount of electrical energy as the empty capacitor V2= i eTextbook and Media Assistance Used GO Tutorial Assistance Used Open in new window

Dr Randy E Banzon instructor GENERAL INSTRUCTIONS 1 Read and follow the instructions carefully 2 Strictly no erasures alterations and superimpositions of answers 3 Going out of the examination room is prohibited once examination has started 4 No answers of calls and text cellphones must be out of your reach 5 Use only ink pen 6 No correction tape fluid erasers must be seen in your desk 7 Write legibly on vour answer sheet See to it its readable TRUE OR FALSF WRITE TRUE ON FALSE AN VOU AI IER SHET 1 Occlusai bar contacts the edentunus ridge 2 Features of Anatomic Reverse Pin Facings have Holes in the flat inesial surface 3 Anatomic design has a Greater resemblance to a natural tooth because it possesses a more nearly normal incisal form 4 Pontic is suspended between cast abutment restorations by means of rigid metal connectors 5 The good lubricant for this procedure is the handpiece cleaner 6 It is mandatory that a lubricant flood the area and not always contact the drill area 7 The Axial Contour should be aligned with the long axis of a tooth 8 Zinc Phosphate cement Powder is dusted on the wax pattern before checking the occlusal contacts of the teeth 9 Cone waxing technique are both used for Posterior Full Veneer Wax Pattern and Posterior Partial Verieer Wax Fattern 10 Beeswax is added to paraffin in order to resist flaking and allow smooth surfaces 11 Occlusal contacts can be located on triangular ridges cusp ridges and supplemental grooves 12 Type A wax is a low flow wax 13 Quartz is used as a binder 14 Gypsum is used as a binder to hold the ingredients together 15 Glass ionomer cement is kind to the pulp MULTIPLE CHOICE LETTERS ONLY 1 Reverse Pin facing is cemented to a casting that has metal pins made to fit that have been drilled into the back of the porcelain facing a First statement is true second is false c Both statements are true b First statement is false second is true d Both statements are false 2 True about occlusal bar a It has contact with the soft tissues c Great access for cleaning b Does not contact with the edentulous ridge d AOTA 3 Pontics are for except a Mastication c Estherics b Speech d None of the cholces

Summarize very educationally the following sentence in bullet form so that it will make a good content in PowerPoint presentation with explanation Since the 1920s2 practitioners have recognized that a space should exist between the internal surface of the casting and the prepared surface of the tooth everywhere except immediately adjacent to the margin The space provides room for the luting agent and allows complete seating of the restoration during cementation (see Chapters 7 and 31) At the preparation margin there should be a band of close adaptation (about 1 mm wide) to prevent dissolu- tion of the luting agent The ideal dimension 3-5 for the cement space has been suggested at 20 to 40 um for each wall which implies that a complete crown should have an internal diameter between 40 and 80 um larger than the diameter of the prepared tooth By using available techniques in an appropriately standardized manner such a degree of casting adaptation can routinely be obtained independent of the geometry of the finish-line 67 If the cement space is too narrow the casting will not seat properly during cementation because of hydraulic pressure that develops when the vis- cous mass of luting agent cannot escape through the narrow gap between crown and preparation as the restoration is seated Conversely if the cement space is too wide the casting will be loose on the tooth resistance form (see Chapter 7) will be re- duced and the position of the casting will be dif- ficult to maintain accurately during evaluation and occlusal adjustment In addition the risk of the crown loosening during function increases considerably and its longevity is adversely af- fected The precise amount of cement space ob- tained depends on the materials and techniques used in the indirect process particularly the choice of impression material (see Chapter 14) die material These factors directly affect the size of the cement space