Dental Impression Techniques PDF

↑ 1- They are used for primary impression procedure: 11-the relation of the denture base to bo the underlying bone A-Stock trays...

↑ 1- They are used for primary impression procedure: 11-the relation of the denture base to bo the underlying bone A-Stock trays and the Soft tissues B-Special trays C-individual trays A A. Support B. Stability D- all of the above C. Preservation of the residual alveolar ri and soft tissue 2- Stock tray for edentulous patient should have: D. Retention A- short flanges B- wide and flat floor 12-They act as a guide in the location of the vibrating line Of the C- long flanges posterior border of the denture: D-all of the above A Fovea palatinae 3- types of stock trays should use with alginate B. Hamular notch impression material EXCEPT: C. incisive papilla A- Perforated stock tray D. Retromolar Pad 13-Relief Areas in the mandible EXCEPT: B- Perforated stock tray with rim lock A. Crest of the residual alveolar ridge C- Non - perforated stock tray with rim lock B. Genial tubercles D- Non - perforated stock tray without rim lock C. Torus mandibularis 4- resisting displacement forces at right angle to the D. incisive papilla occlusal plane (away from the tissue) is called: 14-Posterior Palatal Seal Area: A- Retention A. compensation for shrinkage of acrylic B- Stability B. decrease the gagging reflex C- Support C. improves the retention D-all of the above D. all of the above 5- choose the wrong statement relating to Final or 15-choose the wrong statement about boxing procedure: secondary impression: a. Apply a layer of sticky wax around the impression 3 mm below A- the purpose of it, is to fabricate a definitive the periphery prosthesis b.. Wrap a sheet of red boxing wax around the beading wax to form a container B- it is used for making master cast + c. Close the lingual tongue area of the impression with a sheet C- it is made with stock tray t of wax or with pumice and plaster D- all of the above are true d. This procedure usually be used on alginate impression while 6- all of the following are true about special tray we can not use it with impression compound because it will be EXCEPT: distorted A-More accurate impression 16-Position of the dentist for the upper Impression: B-In special tray with stoppers we should have 4 a. the operator should stand to the right and a littie behind the stoppers, 2 at anterior area (canine area and 2 at patient posterior area (first molar area in both sides b. the operator should stand in front of the patient and on the C-It is used in making a primary impression left side D- it is constructed on the primary cast or diagnostic c. the operator should stand to the left and a little behind the cast patient 7- The anterior part of the maxillary wax rim should be d. 7 hours position in front of the patient parallel to the: 17-the Secondary stress-bearing areas in the maxilla are: A- Camper's line a. Rugae B- Ala-tragus line b. Maxillary tuberosity C- interpupillary line c. Hard palate * D-none of the above d. a + b are true 8-choose the false statement about mandibular 18- It is the area of the alveolar ridge that extends distally from occlusion rim: the second molar to the hamular Notch: A-It should occupy the space over the crest of the a. Rugae area residual ridge b. Median palatal raphe B-The occlusal height should be 22 mm from the labial c. Maxillary tuberosity flange lateral to the buccal frenum d. External oblique ridge C-should be level with the acrylic base posteriorly 19- Camper's line: D-The labio-lingual thickness should approximately 4 a. an imaginary line running between the centers of the two pupils of the eyes when the patient is looking straight forward mm anteriorly and also increase posteriorly to be 7 mm b. interpupillary line in molars c. a line running from the ala of the nose to the superior border area of the tragus of the ear 9-permanent record base materials except d. The anterior part of the wax rim should be parallel to this line A-Heat cure acrylic resin 20-the soft elevation of mucosa that lies distal to the third molar B-Gold is: C-Chromium-cobalt alloy a. Retromolar Pad area D Cold cure acrylic resin b. External oblique ridge 10- a line drawn on wax rim when upper lip is relax: c. Alveololingual Sulcus A-speaking line d. Mylohyoid ridge B-gum line C-smiling line D-high lip line 1- They are used for final impression procedure except: 11- the area between the buccal frenum and anterior A-Stock trays border of the masseter and laterally to the external 3-Special trays oblique ridge : C-individual trays D- custom trays B a.Lingual frenum b. Mylohyoid ridge 2- Stock tray for dentulous patient should have: c. Retromolar Pad A- short flanges d. Buccal Shelf Area B- oval and narrow floor 12-Limiting Structures in the maxilla except: C- long flanges a. fovea palatinae D-all of the above b. Zygomatic process 3- Non - perforated stock tray without rim lock used with: c. Hamular notch A- impression compound d. Posterior palatal seal area B- alginate impression material 13- a line drawn on wax rim when upper lip is relax: C- A+B a. high lip line D- None of the above b. smiling line 4- resisting displacement by functional horizontal or c. gum line rotational movement is called: d. speaking line A- Retention 14- Labial Frenum In The Maxilla : B- Stability a. insert in a vertical direction C- Support b. It contains fibers of orbicularis oris D-all of the above c. creates a maxillary labial notch in the maxillary 5- choose the wrong statement relating to boxing impression or denture impression: d. both a and c are true A-To facilitate pouring the impression with plaster or 15- the Position of the dentist in making the lower stone Impression: B-Preserve desired details and borders of the a. the operator should stand in front of the patient and impression on the right side C-Beading wax is a strip of wax that attached all the way b. the operator should stand in front of the patient and around the outside of the impression approximately (2-3 on the left side mm) below the border c. the operator should stand to the right and a little D- Base plate wax is a sheet of wax can be used to fill the behind the patient hard palate space in the upper d. 11 hours position 6- all of the following are true about special tray except: 16- a sheet of wax is used to made the vertical walls of A-More accurate impression the boxing impression about 10-15 mm above the B-in special tray with stoppers we should have 4 impression is: stoppers, 2 at anterior area (canine area and 2 at a. Beading wax posterior area (first molar area) in both sides b. Base plate wax C-It is used in making a final impression c. ready made wax D- it is constructed on the master cast or definitve cast d. Boxing wax 7- choose the false statement about occlusal plane: 17- the relation of the denture base to both the A-the vertical length of maxillary occlusion rim underlying bone and the Soft tissues is : anteriorly) should be 1-2 mm below the relaxed upper lip a. Support B-Posteriorly the occlusal plane starting from the canine b. Stability region backward should be parallel to interpupillary line c. Preservation of the residual alveolar ridge and soft C- It's an imaginary surface which is related anatomically tissue to the cranium d. Retention D- Fox bite is an appliance used to check the parallelism 18- In the denture the area that fills the vestibule space of the wax occlusal rim anteriorly and posteriorly. is known as: 8- the maxillary labial surface should be anterior to the a- flange line bisecting the incisive papillae approximately: b- notch A-6-10mm c-polished surface B-10-12mm d- border C-5-6mm 19- It is a narrow cleft of loose connective tissue D- 1-2mm situated between the maxillary tuberosity and the 9- Temporary record base materials except: pterygoid hamulus: A-Shellac base plate a- maxillary tuberosity B-Cold cure acrylic resin b- incisive papilla C-Visible light cure acrylic resin c- retromolar pad D- Gold D- hamular notchs 10-The high length of anterior teeth is determined on the 20- represent the posterior border of maxillary denture maxillary bite rim by drawing: EXCEPT: A-speaking line a- hamular notch B-relaxed lip line b- vibrating line C-gum line c- maxillary tuberosity ‫تاكدو منها‬ D-low lip line d- posterior palatal seal  11- Factors effect in selection of stock tray: 1- Relief Areas in the mandible EXCEPT: a- The type of impression material a-Mental foramen b-Genial tubercles B b- Size and form of the arch c- Stock tray should give a sufficient space to impression C- The residual alveolar ridge material in all direction d-Torus mandibularis d- all of the above are true 2- The length and thickness of the labial flange of the 12- choose the wrong statement about Special tray: mandibular denture: a- It is used in making a final impression a-occupying the space of Labial Vestibule b-Special tray is constructed on the master cast or b-influencing lip support and retention definitive cast c- no muscle fibers attachments in this region c- there are two types of special tray: Spaced and Closed d-both a and b are true fitted 3- choose the wrong statement about mandibular labial d- The borders must be under extended about 2 mm frenum: 13- It is the quality of prosthesis to be firm, to resist a-It is a fibrous band similar to that found in the maxilla displacement by functional horizontal or rotational b - it is quite sensitive and active. movement: c-receives attachment from the buccinator muscle a- Retention d-creates a mandibular labial notch in the mandibular b- Stability impression or denture c- Support 4- Hamular notch EXCEPT: d-all of the above a- It is a narrow cleft of loose connective tissue 14- A cast formed from a preliminary impression for use in b- It is used as boundary of the posterior.border of diagnosis or the fabrication of an impression tray: maxillary denture a- Primary cast c- it is relief area b- definitive cast d- situated between the maxillary tuberosity and the c- Master cast pterygoid hamulus d- final cast 5- we can improve the retention of the upper denture 15- Materials used for final impression EXCEPT: and compensate the shrinkage of the acrylic resin by a- ZOE designing: b- Silicon (light body) a- Posterior Palatal Seal Area c- Alginate b- Vibrating line d- heavy body of Silicon c- Hamular notch 16- Position of the dentist for the lower impression: d- Fovea palatinae a- 11 hours position 6- choose the false statement relating to the Supporting b- the operator should stand to the right and a little behind Structures in dental arches: the patient a- the available denture bearing area for an c- the operator should stand in front of the patient and on edentulous mandible is 14 cm2 but for maxilla it is 24 the right side cm2 d- the operator should stand to the left and a little behind b- These areas are the load-bearing areas They show the patient minimal ridge resorption even under constant load 17- A strip of wax is attached all the way around the C- Primary stress bearing supporting area represented outside of the impression approximately (2-3 mm) below by the crest of alveolar ridge in the mandible and the the border: rugae area in the maxilla à- Beading wax d-The denture should be designed such that most of the b- Boxing wax load is concentrated on these areas c- Base plate wax 7- Relief Area in the maxilla: d- all of the above a- Hard palate 18- Types of temporary record bases except: b- Maxillary tuberosity a- Reinforced shellac base plate c- Incisive papilla b- Heat cure acrylic resin d- Rugae c- Cold cure acrylic resin 8- These are used for primary impression procedure: d- Visible light cure acrylic resin a-custom trays 19- The high length of anterior teeth is determined by b- Stock trays drawing : c- individual trays a- speaking line d- Special trays b- low lip line 9- all the statements are true about stock trays EXCEPT: c- smiling line a- can be used for several patients d- relaxed lip line b- stock trays for dentulous patient have short flanges, 20-choose the wrong statement about Occlusal plane: wide and flat floor a- the vertical length of maxillary occlusion rim anteriorly c- Impression trays serve to carry the impression should be 1-2 mm below the relaxed upper lip material to the mouth and support it in the correct Ab-- the vertical length of mandibular occlusion rim position while it is hardening anteriorly should be at the level of the lower lip d- They are made of different materials like plastic and c-Posteriorly the occlusal plane starting from the canine stainless steel region backward should be parallel to the interpupillary 10- Non - perforated stock tray without rim lock used line with: d- for the patient that have long lip the height of the a- alginate impression material occlusal plane should be with the border of the upper lip b- impression compound c- atb are true d- all of the above are wrong  12- choose the wrong statement about Special tray: A a- It is used in making a final impression 1- Relief Areas in the mandible EXCEPT: b-Special tray is constructed on the primary cast or diagnostic a-Mental foramen cast b-Genial tubercles c- there are two types of special tray: Spaced and Closed fitted cThe residual alveolar ridge d- The borders should be developed in the same manner as d-Torus mandibularis borders of finished denture 2- represent the posterior border of maxillary denture EXCEPT: 13- the constant relation of the denture base to underlying soft a- hamular notch tissues and resisting displacement forces at right angle to the b- vibrating line occlusal plane: c maxillary tuberosity a- Retention d- posterior palatal seal b- Stability 3- choose the wrong statement about maxillary labial frenum: c- Support a It is a fold of mucous membrane extends from the mucosal d-all of the above lining of upper lip to the labial surface of the residual ridge 14-The final impression is poured or casted in: b - The Frenum may be single or multiple, narrow or broad a- model plaster gypsum type 2 c-receives attachments from the orbicularis oris muscle b- dental stone type 3 d-creates a maxillary labial notch in the maxillary impression or c- die stone type 4 denture d- die stone type 5 of gypsum 15- Materials used for primary impression EXCEPT: 4- a line drawn on wax rim when upper lip is relax:: a- ZOE a. high lip line b- impression compound b. smiling line c- Alginate c. gum line d-heavy body of Silicon speaking line 16- Position of the dentist for the upper impression: 5- we can improve the retention of the upper denture and a- 7 hours position compensate the shrinkage of the acrylic resin by designing: b- the operator should stand to the right and a little behind the a- Posterior Palatal Seal Area patient b- Vibrating line c- the operator should stand in front of the patient and on the c- Hamular notch right side d- Fovea palatinae d- the operator should stand to the left and a little behind the 6- It aids in the formation of vocal sound also regarded as a patient secondary stress bearing area in the maxilla: 17-all the following statements are true about Boxing an a- Hamular notch impression EXCEPT: b- fovea palatina a- the enclosure of an impression to produce the desired size c- Maxillary tuberosity and form of the base of the cast d- Rugae area b- This procedure cannot usually be used on impression made 7- Relief Area in the maxilla: from hydrocolloid materials a- Hard palate c- This procedure can usually be used on alginate materials d- This procedure can usually be used on impression b- Maxillary tuberosity compound and silicon materials c- Mid-palatine raphe 18- Types of permanent record bases EXCEPT: d- Rugae a- Gold 8- These are used for final impression procedure: b- Heat cure acrylic resin a-custom trays c- Chromium-cobalt alloy b- Special trays d- Visible light cure acrylic resin c- individual trays 19- the maxillary labial surface should be anterior to the line c- all of the above are true bisecting the incisive papillae by : 9- all the statements are true about stock trays EXCEPT: a- 8-10 mm range ‫ ف‬10 ‫هذه سوال معقد بس هوه كحد اعلى‬ a Stock tray for dentulous patient have short flanges, oval and b- 2-3 mm narrow floor c- less than 5 mm ‫ او بني هاي االرقام‬10 ‫ الى‬6 ‫يصير من‬ b-stock trays for dentulous patient have long flanges, wide and d- more than 10 mm flat floor 20-choose the wrong statement about Measurement of c- Impression trays serve to carry the impression material to the mandibular occlusion rims: mouth and support it in the correct position while it is hardening a- The occlusal height should be 18 mm from the labial flange d- They are made of different materials like plastic and stainless lateral to the labial frenum steel b - The occlusal height should be 22 mm from the buccal flange 10- perforated stock tray with rim lock used with: posteriorly a- alginate impression material c -The labio-lingual thickness should approximately 4 mm b- impression compound anteriorly and also increase posteriorly to be 7 mm in molars area c- a + b are true d- should occupy the space over the crest of the residual ridge d- all of the above are wrong 11- Camper's line: a- Ala-tragus line b- The anterior part of the wax rim should be parallel to this line c- Posteriorly the occlusal plane starting from the canine region backward should be parallel to this line d- a + c are true