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DH 101 AND 201 FINAL EXAM PREP 2025 WITH 350 STRUCTURED QUESTIONS AND 100% CORRECT VERIFIED ANSWERS ALREADY AGRADED Sickle scaler - CORRECT ANSWER >>>used to remove SUPRAgingival calculus curets - CORRECT ANSWER >>>used to remove calculus deposits What are the characteristics of the Acquired Pellicle or cuticle? - CORRECT ANSWER >>>a. tenacious membranous layer b. amorphous, acellular, and organic c. forms over exposed tooth surfaces d. can form over restorations and dental calc. e. thickness from 0.1 - 0.8 nm
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Sickle scaler - CORRECT ANSWER >>> used to remove SUPRAgingival calculus curets - CORRECT ANSWER >>> used to remove calculus deposits What are the characteristics of the Acquired Pellicle or cuticle? - CORRECT ANSWER >>> a. tenacious membranous layer b. amorphous, acellular, and organic c. forms over exposed tooth surfaces d. can form over restorations and dental calc. e. thickness from 0.1 - 0.8 nm What is the formation of the Acquired Pellicle or cuticle? - CORRECT ANSWER >>> a. usually greatest around gingival margin b. within minutes after all external material has been removed w/ and abrasive What is the composition of the Acquired Pellicle or cuticle? - CORRECT ANSWER >>> a. primarily glycoproteins from the saliva b. absorbed by the hydroxyapitite of the tooth surface c. becomes highly insoluble What are the types of Acquired Pellicle or cuticle? - CORRECT ANSWER >>> a. surface- unstained (clear, translucent, insoluble)
b. surface-stained(extrinsic stain-brown, grayish, or other colors) c. subsurface- continuous with surface pellicle that is embedded in tooth structure What is the Significance of Acquired Pellicle or cuticle? - CORRECT ANSWER >>> a. protective
** a. formation of pellicle b. bacterial mult. And colonization
What is the source of the gingivitis - CORRECT ANSWER >>> subG biofilm results from apical proliferation of microorganisms from supraG biofilm Epithelium-associated biofilm - CORRECT ANSWER >>> a. loosely attached to the pocket epithelium b. many Gram- microorganisms c. numerous white blood cells d. many virulent pathogenic organisms e. from this layer, microorganisms invade inderlying CT Composition of Dental Biofilm - CORRECT ANSWER >>> a. Inorganic elements
b. rough surfaces c. difficult to clean areas d. out of occlusion e. bacterial multiplication What is the clinical appearance of the materia alba? - CORRECT ANSWER >>> a. white material b. bulky, soft, clearly visible c. resembles cottage cheese What are the effects of the materia alba? - CORRECT ANSWER >>> a. contributes to gingival inflammation b. tooth surface demineralization c. dental caries often seen underneath What are the prevention of the materia alba? - CORRECT ANSWER >>> removed with water spray or oral irrigator when do the food debris accumulate? - CORRECT ANSWER >>> a. when there are open contact areas b. where there is mobility of teeth c. irregularities of occlusion What is the prevention of the food debris? - CORRECT ANSWER >>> a. self cleansing with tongue, saliva, lips b. tooth brushing and flossing
Classification of stains By location - CORRECT ANSWER >>> Extrinsic
silver nitrate Endodontic therapy - CORRECT ANSWER >>> Endogenous bluish black volatile oils Endodontic therapy - CORRECT ANSWER >>> Endogenous yellowish brown strong iodine Endodontic therapy - CORRECT ANSWER >>> Endogenous brown aureomycin Endodontic therapy - CORRECT ANSWER >>> Endogenous yellow silver containing root canal sealer Endodontic therapy - CORRECT ANSWER >>> Endogenous black Treatment Planning - CORRECT ANSWER >>> 1. Soft Tissue Management
Lower shank - CORRECT ANSWER >>> a. portion of the functional shank that is nearest to the working-end b. AKA terminal shank Extrinsic stain removal, rubber cup method - CORRECT ANSWER >>> Used to remove stains from crowns Prophy angles - CORRECT ANSWER >>> a. right angle
Enhancement of remineralization - CORRECT ANSWER >>> a. As saliva flows over the biofilm it neutralizes acid from bacteria b. pH rises towards neutral and prevents further dissolution Inhibition of bacteria in Biofilm - CORRECT ANSWER >>> a. Fluoride → hydrogen fluoride when contacted by acid from bacteria b. In HF form, it can diffuse over the cell membrane of bacteria c. Fluoride ions interfere with essential enzyme activity of cell 20th Century Historical Aspects of fluoride - CORRECT ANSWER >>> - Water fluoridation named one of top 10 most important health measures by CDC Dr. Fredrick McCay - CORRECT ANSWER >>> a. Early 20th century b. Studied brown stains of teeth
Compounds used for fluoride - CORRECT ANSWER >>> i. Sodium fluoride ii. Sodium silicofluoride iii. Hydrofluorosilicic acid What are the Benefits of fluoride? - CORRECT ANSWER >>> Caries protection Fluoride in foods - CORRECT ANSWER >>> a. Meats, eggs, fruits, etc
ii. Once a day iii. good for Xerostomia patients or loss of salivary glands Self-Applied Fluorides Mouthrinse - CORRECT ANSWER >>> i. Good for recession, decay, demineralization, Xerostomia patients etc. ii. Do not swallow iii. Must have childproof caps Self-Applied Fluorides Brush on gel - CORRECT ANSWER >>> i. 1.1% NaF (neutral pH) ii. 1.1 acidulated NaF (3.5 pH) iii. .4% stannous fluoride in glycerin base (1,000 ppm) Self-Applied Fluorides Fluoride dentifrices - CORRECT ANSWER >>> i. Fluoridated toothbrush ii. Daily iii. Caries protection for all Average Caries Reduction with Fluoride Dentifrices - CORRECT ANSWER >>> 20 - 30% Average Caries Reduction with Professionally applied topical - CORRECT ANSWER >>> 30 - 40% Average Caries Reduction with Self Applied Topical - CORRECT ANSWER >>> 20 - 50%
Average Caries Reduction with Community water fluoridation - CORRECT ANSWER >>> 50 - 65% Average Caries Reduction with School water fluoridation - CORRECT ANSWER >>> 40% Average Caries Reduction with Dietary supplements - CORRECT ANSWER >>> 50 - 65% What is the acute toxicity? - CORRECT ANSWER >>> Rapid intake of excess dose over a short time What are signs and symptoms of acute toxicity? - CORRECT ANSWER >>> i. Nausea, vomiting, diarrhea, stomach pains ii. hypocalcemia iii. Convulsing, cardiac depression What is the treatment for the acute toxicity? - CORRECT ANSWER >>> i. Induce vomiting ii. Second person call Emergency response iii. Administer binding liquid (MILK) What is chronic toxicity? - CORRECT ANSWER >>> Long term ingestion of amounts over therapeutic levels What are signs and symptoms of chronic toxicity? - CORRECT ANSWER >>> i. Skeletal fluorosis (increased bone density) ii. Dental fluorosis What is Accidental ingestion of fluoride? - CORRECT ANSWER >>> Accidental ingestion of high concentrated fluoride
e. erthrosin f. Fast green g. Two tone What are Methods of application of the disclosing agents? - CORRECT ANSWER >>> a. Solution for direct app b. Rinsing c. Tablet or wafer What is Halitosis? - CORRECT ANSWER >>> Bad breathe a. Systemic-10% b. Local in the oral cavity - 90% Tooth brushes Standards - CORRECT ANSWER >>> Manufacturers must adhere to using nylon bristles with and ISO rating of 8627 name three parts of the toothbrush - CORRECT ANSWER >>> handle head bristles and filaments Kinds of Handles of the toothbrush - CORRECT ANSWER >>> i. Straight ii. Angled, curved, or offset iii. 4 1/3 inches long iv. 5/16-3/8 inches wide Kinds of Heads of the toothbrush - CORRECT ANSWER >>> a. flat on same plane
b. uneven Kinds of the Bristles and filaments of the toothbrush - CORRECT ANSWER >>> i. Stiffness ii. Synthetic iii. End rounded cause least trauma iv. Natural hogs hair-more prone to bacteria Soft Nylon filaments - CORRECT ANSWER >>> i. .007mm- .009mm ii. More effective in cleaning the cervical areas iii. Less traumatic to gingival tissue iv. Can be directed to gingival sulcus v. Tooth abrasion and recession can be prevented Medium Nylon filaments - CORRECT ANSWER >>> .010mm- .012mm Hard Nylon filaments - CORRECT ANSWER >>> .013mm - .15mm What is the lifespan of the toothbrush - CORRECT ANSWER >>> a. 2-3 months b. as it deteriorates, plaque removal becomes less effective Name 6 speciality toothbrushes - CORRECT ANSWER >>> 1. Orthodontic