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IMPLANT DENTISTRY NEWEST ACTUAL EXAM STUDY GUIDE COMPILES WITH COMPLETE QUESTIONS AND CORRECT ANSWERS RATED A+
Typology: Exams
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The connective tissue is well vascularized around teeth. What about implants? Correct Answer Not well vascularized around implants Biologic width? Correct Answer 3 mm What 3 things constitute the biologic width? Correct Answer Sulucs depth Epithelial attachment Connective tissue The distance between the reference point and the marginal bone level on crown installation was average? Correct Answer 1. In all 2 part implants where is most bone loss? Correct Answer Below the microgap How much bone loss on average below the microgap? Correct Answer 2 mm
Where is most of the bone loss on 1 part implants? Correct Answer At the rough/smooth implant interface Lateral component of bone loss around implants measures what one average? Correct Answer 1.34 mm Implants that are spaced how many mm apart had less bone loss? Correct Answer 3 mm Multiple implants in the aesthetic zone should have a minimum of how many mm apart at the abutment? Correct Answer 3 mm Biologic width around implants vertically and horizontal? Correct Answer Vertical = 1.5 to 2 mm Horizontal = 1.34 mm Possible reasons for apical epithelial migration? Correct Answer Bacteria Micromovement of the implant What type of surface on implants increases bone apposition? Correct Answer Rough texture is better than smooth texture What is a method for preserving bone around the top of wide diameter implants? Correct Answer Platform switching
Vertical bone loss with platform switching? Without platform switching? Correct Answer With = 0.6 - 1.2 mm Without = 1.3 - 2.1 mm The papilla was present almost 100% of the time when the base of the contact to the bone was ___mm or less Correct Answer 5 Mean height of papillary tissue in adjacent implants? Correct Answer 3.4 mm The biologic width of a healthy tooth is almost always _____? Correct Answer Supracrestally The location of an implant platform interdentally places the biologic width ____? Correct Answer Subcrestally Platform switched implants allow us to place implants within how many mm of natural teeth? Correct Answer 1 mm because they reduce vertical bone loss The mean distance between platform switched implants is ___mm Correct Answer 2.23 mm Minimum distance between non-platform swithched implant and natural tooth? Correct Answer 1.5 mm
Minimum distance between non-platform swithched implant and another non-platform? Correct Answer 3 mm The implant platform should be placed 1 mm apical to the ____of the contralateral tooth? Correct Answer CEJ In the aesthetic zone the implant abutment junction should be how many mm apical to the height of contour? Correct Answer 3 - 4 mm The implant shoulder is positioned about ___mm palatal to the emergence profile? Correct Answer 1mm Can implants be placed in the sinus septum? Correct Answer Yes Can implants be placed inside the maxillary sinus cavity? Correct Answer Yes as long as they don't perforate the membrane Mental foramen is most commonly in line with what tooth? Correct Answer Mandibular 2nd premolar Anterior loop? Correct Answer Extends 5 mm anteriorly from the mental foramen
How large of a zone of safety should you leave between an implant and the mental foramen? Correct Answer 2mm Cement retained restoration minimum space between implant platform and opposing arch? Correct Answer 7 mm Minimum space required for screw retained implant and opposing arch? Correct Answer 4 mm Locator abutments require what thickness of acrylic resin to be maintained throughout the denture base? Correct Answer 2 mm Minimum clinically acceptable crown to root ratio? Correct Answer 1: Posterior cantilver? Correct Answer 1:1.3 ratio Optimal screw access? Correct Answer Central fossa/Central pit Magnification = Correct Answer Source to film distance/ Source to object distance Tomograpy zone of sharpness is where? Correct Answer At the fulcrum
In tomography surrounding structures are .....? Correct Answer Blurred out In conventional tomography, a ______is made to produce each cross sectional image Correct Answer Separate exposure Advantages of tomography? Correct Answer No superimposing of images Digital enhancement of images Hard and soft tissues Image acquisition in multiple planes Cone beam advantages over medical CT? Correct Answer Lower cost Less radiation Cone beam disadvantages? Correct Answer Image noise Poor soft tissue contrast Fixed imaging volume How many teeth are extracted each year? Correct Answer 20 million What % of the population over 60 has 1 or more edentulous space? Correct Answer 40%
Multi-rooted teeth extraction? Correct Answer Remove the crown and section the roots with a carbide ____% bone loss occurs in 12 months following extraction. How much of this reduction will occur in the first 3 months? Correct Answer 50% 2/ Which bone is thinnest, buccal, lingual, palatal? Correct Answer Buccal Crest of buccal bone is comprised solely of what type of bone? Correct Answer Bundle bone Walls of sockets are lined by ____bone? Correct Answer Compact Where is buccal bone thicker than lingual bone? Correct Answer Mandibular molar region Extraction socket clot is gone in ___ days Correct Answer 7 Bone fills extraction socket in ____ months? Correct Answer 4
No radiographic evidence of socket after how many days? Correct Answer 100 days T/F. Tooth extraction should be performed with elevation of a mucoperiosteal flap? Correct Answer False, the flap creates 0. mm more volumetric alteration Immediate implant placement survival rate? Correct Answer 94%- 100% Immediate implant placement helps to retain what plate of bone? Correct Answer Buccal plate of bone Bone is primarily is what type of collagen? Correct Answer Type 1 Which cells make up 90% of bone matrix? Correct Answer Osteocytes Precursor for bone? Correct Answer Osteocalcin expressed from osteoblasts Which bone cells have long life spans? Short life spans? Correct Answer Osteocytes have long life spans Osteoclasts has short life spans
Bone remodeling 5 step process? Correct Answer Resorption Chemotaxis Proliferation Matrix production Mineralization Calvaria and jaws form what type of new bone formation? Correct Answer Intramembranous ossification What new bone formation forms the long bones and parts of the mandible? Correct Answer Endochondral What type of bone forms where no bone previously stood? Correct Answer Woven bone It is the type of bone that first forms around implants What type of bone is replacement bone? Correct Answer Lamellar bone Forms 6x slower than lamellar bone How accurate must impression be? Correct Answer Fine detail of 25 microns or less What material can produce impressions of 1 to 2 microns detail? Correct Answer PVS
Does any impression material exhibit 100% elasticity? Correct Answer No Hydrophic materials exhibit what contact angle with water? Correct Answer 90 degrees or greater High flow under pressure, but low flow under gravity is termed? Correct Answer Thixotropy Best impression material? Correct Answer Addition PVS Which type of tray produces the best impression? Correct Answer Custom tray Which produces the best impression with closed tray technique? Correct Answer Metal impression copings were better than plastic caps Is there a difference between open tray and closed tray impression techniques? Correct Answer Not when the implant has less than a 10 degree inclination Most accurate impression technique in a fully edentulous mandible with 4 implants? Correct Answer Squared/Open tray
Immediate placement of tooth with an implant is what class? Correct Answer Type 1 The papilla adjacent to single implant restorations present with _____volume after ______ years? Correct Answer Similar 2 The presence of ________aids in the development of the papilla? Correct Answer Contact point When the measurement was ___mm from the contact point to the bone the papilla was present 100% of the time? Correct Answer 5mm Determining factor for papilla height? Correct Answer Bone level on the tooth side How much shrinkage buccally after 1st year an implant is placed in anterior zone? Correct Answer 0.6 mm Immediate provisional restorations preserved __mm of facial gingival margin? Correct Answer 1mm Mucosal thickness greater than ___ will lead to no distinguishable color change noticeable on abutment selection? Correct Answer 3mm
If mucosal thickness less than 3mm, what would you choose? Correct Answer Zirconia Estimated HIV population in United States? Correct Answer 1. million Any modification needed for HIV patient under stable control? Correct Answer No modification Strict control of diabetes occurs with what HbA1C levels? Correct Answer 6.5 - 7. What level of bone density is required to diagnose someone with osteoporosis? Correct Answer 2.5 standard deviations below average BRONJ increases with number of IV bisphosphonate treatments? Correct Answer True Is it necessary to cease bisphosphonates before implant therapy? Correct Answer No Which are worse, IV bisphosphonates or oral? Correct Answer IV is more contraindicated
Implant success better in those taking oral BP's less than how many years? Correct Answer 5 years Which implants have a higher occurence of BRONJ? Correct Answer Posterior implants Does radiation therapy have any effect on implants? Correct Answer Marginally significant more implant loss in those receiving radiation 10 year survival percentage of radiotherapy? Correct Answer 93.75% 5 years after loading, smokers had how much more implant loss than non-smokers? Correct Answer Twice as much How to increase implant survival for smokers? Correct Answer Stop smoking 1 week prior and 2 months following implant placement If antibiotic dosage isn't given before the procedure, it can be given ____hours after the procedure? Correct Answer 2 hours How much amoxicillin should we give 1 hour prior to surgery? Correct Answer 2 grams or 3 grams
Lower levels of osseointegration are seen with those who have had how much radiation? Correct Answer 50Gy Highest grey level values of cement for implants? Correct Answer Tempbond (Zinc oxide with eugenol) Which type of cantilever is more favorable, Mesial or Distal? Correct Answer Mesial Implant supported distal cantilver prosthetics have what survival rate? Correct Answer 95% What type of connector is best for connecting natural teeth with implants? Correct Answer Rigid connector For overdentures, how many implants in maxilla and mandible? Correct Answer 4 implants maxilla 2 implants mandible What is the minimum thickness of acrylic base resin shield throughout the denture base? Correct Answer 2mm Minimum height? Correct Answer 3.17mm
Allow for insertion of the overdenture with up to ___degrees of divergence? Correct Answer 20 What are the two implant systems we follow at UF? Correct Answer 1. Staumann
What is the name of the father of modern implantology, discovered osseointegration FOR DENTAL USE! Correct Answer Branemark What implant system follows:
What are the Body & platform widths of each: 1. NN 2. RN 3. WN Correct Answer 1. 3.3mm, 3.5, 2. 4.1mm, 4.8 3. 4.8mm, 6. What teeth do the astra sizes treat? 1. 3.0, 2. 3.6, 3. 4.2, 4. 4.8, 5. 5.4 Correct Answer 1. Max Lat, Mand incis, 2. Max lat, mand incis, 3. Max Centrals, All canines and premolars 4. All molars 5. All molars Which size AStra implant usually gives a better emergence profile for the molar region, but if less available bone exists, a smaller size is used? Correct Answer 1. 5.4 is used for better emergence
The snap on components for implant level impressions:
Sleeve for surgical guide diameters: