



























Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
A comprehensive set of questions and answers covering various aspects of dental procedures, specifically designed for the efda (expanded functions dental assistant) board exam. It covers topics such as restorative materials, tooth anatomy, occlusion, and dental procedures, offering valuable insights for aspiring dental assistants preparing for their licensing exam.
Typology: Exams
1 / 35
This page cannot be seen from the preview
Don't miss anything!
When restoring a class II preparation, the first increment of material should be placed in the: - ANSWER: Depth of proximal box Material that can be used as either cement or restorative material in a class V lesion
- ANSWER: Glass Ionomer When placing a composite restoration, the composite is often placed in layers to: - ANSWER: Reduce the effect of polymerization shrinkage When the tooth exposed to stimulus such as caries, cavity preparation, or trauma it lays down: - ANSWER: Reparative/ tertiary dentin Which type of adhesive would typically be used to temporarily cement a provisional crown or bridge? - ANSWER: Zinc Oxide Eugenol The material that is utilized for a pulp cap is called: - ANSWER: Calcium hydroxide What molars have a distal cusp? - ANSWER: Mandibular 1st molars Where can the cusp of Carabelli be found? - ANSWER: Maxillary 1st molars
What should be even heights when restoring teeth? - ANSWER: Marginal ridges Incomplete closure of the lobes coming together - ANSWER: Fissure Runs from cusp tip to the central groove on the occlusal surface - ANSWER: Triangular ridge Convexity running from the distobuccal cusp to the mesiolingual cusp - ANSWER: Oblique Ridge Major depressions on both anterior and posterior teeth - ANSWER: Fossae Which cement creates an adhesive bond to the tooth structure? - ANSWER: Glass Ionomer A thin layer of uncured resin remains on the surface after its cured so new layers can bond to existing layer, what is this layer called? - ANSWER: Air inhibited layer Delayed expansion in amalgam materials due to moisture contamination is eliminated by: - ANSWER: The removal of Zinc from the alloy Which cement posses an anticariogenic effect? - ANSWER: Glass Ionomer Excess mercury is brought to the surface of the amalgam when during... - ANSWER: condensation/ polishing
A shallow, linear depression in a tooth is called a: - ANSWER: A groove The use of copal varnish would be contraindicated for - ANSWER: Zinc phosphate Name the three eccentric movements we evaluate when adjusting a patient's occlusion. - ANSWER: Lateral excursions, protrusion, retrusion Movement of the jaw from left to right: - ANSWER: Excursive movements Stain removed with polishing from the tooth surface (from food/ drink): - ANSWER: Extrinsic/ exogenous stain Maxillary 1st premolar #4/13 sometimes have: - ANSWER: 2 roots 1 buccal, 1 lingual Between the tooth and bonding agent: - ANSWER: Mechanical retention Have the ability to soothe the pulp sensitivity: - ANSWER: Obtundents EFDA's renew licenses every? - ANSWER: March 31st - odd years! 1st in removing the dental dam - ANSWER: remove the ligation (dam or floss) What would be the best in office fluoride treatment for a 4 year old patient? - ANSWER: Fluoride varnish (topical fluoride)
Corrosion: - ANSWER: Break down of amalgam by acids Transverse ridge: - ANSWER: The union of two triangular ridges (facial/lingual) that produces one ridge across the occlusal surface Anatomical crown: - ANSWER: Portion of the tooth that is covered with enamel Clinical crown: - ANSWER: That portion of the tooth that is visible in the oral cavity The area where the roots divide - ANSWER: Furcation Contact areas serve two purposes - ANSWER: Stabilize dental arch, to keep food from packing between the teeth. Its composition is around 95% inorganic matter, mainly hydroxyapatite, and 5% organic matter and water: - ANSWER: Enamel The hardest connective tissue lying just inside the enamel and cementum: - ANSWER: Dentin Three major types of dentin: - ANSWER: primary, secondary and tertiary (reparative) Two types of cementum - ANSWER: acellular and cellular cementum of tooth - ANSWER: hard connective tissue
Two types of alloy particles - ANSWER: lathe cut and spherical What would happen if amalgam was contaminated with moisture? - ANSWER: Bubbles of hydrogen from the water would cause delayed expansion. Mercury to alloy ratio - ANSWER: - the amount of mercury that is mixed with the amalgam alloy
Class I molar relationship - ANSWER: mesiobuccal cusp of the maxillary first molar is positioned in the buccal groove of the first molar A wedge is used to - ANSWER: Prevent overhang/ to adapt the band to the cervical region of the tooth Class II molar relationship - ANSWER: buccal groove of the mandibular first permanent molar is distal to the mesiobuccal cusp of the maxillary first permanent molar by at least the width of a premolar Overjet - ANSWER: Horizontal projection of upper teeth over the lower. Overbite - ANSWER: Increased vertical overlap of the maxillary incisors Sealants are indicated for which areas? - ANSWER: deep pits and fissures Type of material that bonds directly to the tooth? - ANSWER: Glass Ionomer Why were sealants created? - ANSWER: to provide a physical layer over occlusal fissures to prevent plaque, bacteria, and food debris from collecting in the grooves. Most sealant material is made of what? - ANSWER: BIS-GMA for strength If saliva contaminates the tooth during the placement of a sealant, one should: - ANSWER: re-etch the tooth for 10 seconds. Products containing BIS-GMA do not release? - ANSWER: Levels of BPA (plastic)
Protrusive movement - ANSWER: The straight forward movement of the mandible cross bite - ANSWER: When the mandibular teeth are outside (facial/ buccal) of the maxillary teeth Working cusps - ANSWER: Upper lingual cusps and lower buccal cusps Non working cusps - ANSWER: Upper buccal cusps and lower lingual cusps The part of the clamp that is expanded to fit over the tooth - ANSWER: Jaw Strength and wear rates of a composite are critical to consider when selecting a material for placement of what class for stength - ANSWER: Class I,II,III Mechanical retention - ANSWER: between the tooth and bonding agent Chemical retention - ANSWER: bonding between tooth & material When polishing composite its best to go from - ANSWER: course to fine The addition of which metal to the dental alloy will reduce gamma phase? - ANSWER: Copper The weakest phase of amalgamation - ANSWER: Gamma phase
What can be used as a sedative dressing under a restoration - ANSWER: ZOE What base requires cavity vanish under it to protect the pulp? - ANSWER: zinc phosphate Outter nut - ANSWER: Tightens or looses the spindle against the matrix band in the vice Bases and liners can be used as - ANSWER: sealers,reinforcers,insulators,obtundents, and pulp stimulators Minimal depth restoration - ANSWER: 0.5mm to 1.5mm Near pulp exposure - ANSWER: Near pulp exposure - ANSWER: less than 0.5 mm depth Mottled enamel - ANSWER: another name for dental fluorosis enamel hypoplasia - ANSWER: incomplete development of tooth enamel How many molars are present in the mandibular arch? - ANSWER: 6 The permanent mandibular second molar differs from the permanent mandibular first molar by number of? - ANSWER: Cusps
Major difference between first and second molars? - ANSWER: 1st molars has 5 cusps, 2nd molars have 4 cusps Which is true of oblique ridges? - ANSWER: Only Maxillary molars have Oblique ridges Facial surfaces of teeth include what? - ANSWER: Labial and Buccal surfaces Elevated crests of enamel that form mesial and distal margins of the occlusal surface - ANSWER: Marginal ridges The bulk of a tooth is made up of - ANSWER: Dentin Interproximal spaces between teeth - ANSWER: Gingival papillae Mesial and distal marginal ridges are found on - ANSWER: Both Posterior and Anterior teeth The distal triangular fossa of the maxillary first molar is separated from the central fossa by the? - ANSWER: Oblique ridge A pinpoint depression where two or more grooves meet? - ANSWER: Pit V-shaped spaces between proximal surfaces of two adjoining teeth - ANSWER: Embrasure A cavity prep the includes the mesial incisal angle of a maxillary central incisor is a? - ANSWER: Class IV
Overbite - ANSWER: Vertical overlap of maxillary incisors Centric occlusion - ANSWER: Touching together of the upper and lower teeth when jaws are closed Overjet - ANSWER: Horizontal space between upper and lower incisors Excursive movements - ANSWER: Movement of jaw from left to right Protrusive movements - ANSWER: Thrusting lower jaw forward Crossbite - ANSWER: Mandibular teeth are facial to their maxillary counterparts Working cusps - ANSWER: Lingual of upper; Buccal of lower Non-working cusps - ANSWER: Buccal of upper; Lingual of lower Walls of a molar - ANSWER: pulpal floor,buccal,distal,lingual,mesial Features of the occlusal surface of a permanent maxillary molar include.. - ANSWER: distomarginal ridge, mesiomarginal ridge, oblique ridge, distomarginal ridge, cusp of caribelli Structure that covers the anatomical crown of a tooth - ANSWER: Enamel
Everything should be dispensed according to what? - ANSWER: The Manufacturer's Instructions Curing lights should be tested weekly to - ANSWER: ensure that the bulb is intense enough to cure through the composite Total Etch - ANSWER: etching the enamel and all involved dentin of the prep During composite finishing procedure a green stone is used to - ANSWER: remove areas of excess composite when necessary Sequence for polishing composite - ANSWER: white stone, brown point, green point, white point, polishing paste Mechanical retention - ANSWER: between tooth and bonding agent Chemical retention - ANSWER: between bonding agent and composite Composites can be - ANSWER: self cured, light cured and dual cured Post-op sensitivity with posterior restorations can result from - ANSWER: hyper occlusion, over etching and operative trauma Which area of a class V amalgam is carved free hand - ANSWER: the central portion During a class II composite procedure the ring of a sectional matrix is placed - ANSWER: after placing the wedge
Which situation would cause a composite restoration to fail? - ANSWER: an internal void, moisture contamination, and improper light curing When polishing composite its best to go from - ANSWER: Course to Fine Acid etch technique utilizes - ANSWER: 35% phosphoric acid The most critical difference that distinguishes composite material is - ANSWER: the particle size Direct supervision is defined as the dentist remaining where while treatment is being preformed - ANSWER: in the facility EFDAs are not permitted to.. - ANSWER: Do anything Final! Gingival retraction cord soaked in epinephrine can cause - ANSWER: Tachycardia acetone, alcohol and water - ANSWER: Carrying agents Bonding is never used as an - ANSWER: lubricant To prevent post-op sensitivity the EFDA should apply what as the first increment in a class II prep - ANSWER: flowable
Which is the most common technique for stain removal? - ANSWER: Rubber cup polishing What damage can result for using the prophy angle at a high speed? - ANSWER: it can cause frictional heat that can burn the gingiva and damage the tooth HEIGHT OF CONTOUR on the facial surface of a posterior tooth is - ANSWER: at the Cervical third Slow flow or movement of amalgam - ANSWER: Creep Carious lesions located on the proximal surfaces of molars and premolars - ANSWER: class II Carious lesions located on the proximal surfaces of central and lateral incisors - ANSWER: class III Cavosurface margins should be check with - ANSWER: an explorer A wedge is used for what class of amalgam restoration? - ANSWER: class II Where should you begin restoring a class II prep? - ANSWER: along the gingival floor walls of a class II cavity prep - ANSWER: mesial, distal, buccal, lingual, axial, gingival
The addition of which metal to the dental alloy will reduce gamma phase? - ANSWER: Copper When placing a tofflemire retainer you place the wedge from what surface? - ANSWER: the lingual 2 metals in gammaphase - ANSWER: Mercury and Tin An auto matrix is used for what class restoration? - ANSWER: class II The walls for a class II prep included the axial wall and the gingival floor which - ANSWER: is adjacent to the gingvial tissues In a class II amalgam retentive grooves/points can be found in the point angles - ANSWER: axiogingivalproximal The diagonal slot of the tofflemire should be placed toward the what for easy removal? - ANSWER: the gingival 5 metals in amalgam - ANSWER: Silver,Copper, Mercury,Tin and Zinc The best way to prevent overhang is? - ANSWER: proper band and wedge placement Marginal ridges should be carved higher than the proximal teeth - ANSWER: 1mm Copalite is an example of a what? - ANSWER: A Base