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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
- more mercury increases the mercury-containing reaction products
- minimizing mercury results in an improved restoration
- strength is increased
- marginal breakdown is decreased
- inadequate mercury/alloy ratio = voids in the restoration Undertrituration - ANSWER: results in dull, crumbly amalgam poor compressive strength difficult to condense sets too quickly Galvanism - ANSWER: An electrical current generated by dissimilar metals in an acidic environment inner nut - ANSWER: Adjusts the size of the matrix band loop The band should be extended gingival to the gingival margin of the cavity. - ANSWER: 0.5mm to 1.5mm
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
