Dental Implant Placement Safety Margins
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Questions and Answers

What is the typical location of the lingual nerve in relation to the osseous crest?

  • 3 mm apical and 2 mm inferior from the lingual cortical plate
  • 3 mm apical and 2 mm lingually from the lingual cortical plate
  • 3 mm apical and 2 mm horizontally from the lingual cortical plate (correct)
  • 3 mm apical and 2 mm buccally from the lingual cortical plate
  • What is the recommended location for incisions distal to the second molar?

  • On the inferior border of the mandible
  • On the crest of the ridge
  • On the lingual aspect of the ridge
  • On the buccal aspect of the ridge (correct)
  • What is the potential consequence of completely stripping the mentalis muscle from the mandible?

  • Decreased sensation in the chin area
  • Appearance of a witch's chin (double chin) (correct)
  • Difficulty in mouth opening
  • Difficulty in mastication
  • What is the recommended approach if the mentalis muscle is reflected during a procedure?

    <p>Performing a double layer suture, first the muscle layer followed by the mucosal layer</p> Signup and view all the answers

    What is the potential consequence of a severely resorbed ridge on the mylohyoid muscle?

    <p>Edematous swelling and spread of infection lingually</p> Signup and view all the answers

    What is the purpose of using a radiopaque marker during a CT scan?

    <p>To provide accurate information about the location of anatomical structures</p> Signup and view all the answers

    What is the most common location of the mental foramen in the vertical dimension?

    <p>Apical to the apex of the bicuspid tooth</p> Signup and view all the answers

    What is the recommended safety margin when placing implants near the mental foramen?

    <p>2mm from the crest of the alveolar ridge to the roof of the foramen</p> Signup and view all the answers

    What is the typical angle of the mental nerve as it emerges from the mental canal?

    <p>50 degrees upward from the mandibular canal</p> Signup and view all the answers

    Which of the following statements about the anterior loop of the mental foramen is CORRECT?

    <p>The anterior loop dimensions can vary from 0.0 to 7.5mm</p> Signup and view all the answers

    What is the MOST COMMON horizontal location of the mental foramen?

    <p>The horizontal location of the mental foramen can vary between the canine and first molar teeth</p> Signup and view all the answers

    What is the MOST LIKELY consequence if the bifurcation of the mandibular canal is not identified on radiographs?

    <p>Decreased available bone height superior to the mandibular canal</p> Signup and view all the answers

    What is the recommended approach to determine if an anterior loop of the mental nerve is present before placing an implant?

    <p>Perform a CT scan</p> Signup and view all the answers

    How many nerve branches of the mental nerve typically emerge from the mental foramen?

    <p>3</p> Signup and view all the answers

    Which statement is true regarding the incisive canal?

    <p>It is a continuation of the mandibular canal mesial to the mental foramen</p> Signup and view all the answers

    If the incisive canal is large, what should be considered before placing an implant in that area?

    <p>Avoid placing an implant in that area</p> Signup and view all the answers

    What is the recommended approach for dealing with potential bleeding from the lingual foramen or lateral canals during implant placement?

    <p>Use a guide pin to help complete the operation</p> Signup and view all the answers

    What is the typical diameter range of the lingual foramen and lateral canals?

    <p>0.6 - 0.8 mm</p> Signup and view all the answers

    Where is the infraorbital nerve typically found in relation to the infraorbital ridge?

    <p>5mm below</p> Signup and view all the answers

    What is the recommended length for a lateral window to avoid encroaching on the infraorbital nerve during a dental implant procedure?

    <p>15mm</p> Signup and view all the answers

    Where is the greater palatine foramen typically located along the palate?

    <p>Halfway between the osseous crest and the median raphe</p> Signup and view all the answers

    How can the precise location of the greater palatine foramen be determined prior to flap elevation?

    <p>Sounding the bone with an anesthetic needle</p> Signup and view all the answers

    In what percentage of cases is the greater palatine foramen found opposite the third molar?

    <p>86%</p> Signup and view all the answers

    What is a safe distance recommended between the greater palatine artery and the end of a surgical incision?

    <p>2mm</p> Signup and view all the answers

    What is the average height of the superior genial tubercle?

    <p>$6.17$mm</p> Signup and view all the answers

    What is the primary concern when reflecting the genioglossus muscle during implant procedures?

    <p>Possible retrusion of the tongue and airway obstruction</p> Signup and view all the answers

    Where is the mental foramen typically located in relation to the depressor anguli oris and depressor labii inferioris muscles?

    <p>The muscles overlie the mental foramen</p> Signup and view all the answers

    When performing a GBR procedure in the buccal area, what is the primary reason for incising the buccinator and orbicularis oris muscles?

    <p>To release tension and allow for coronal positioning of the flap</p> Signup and view all the answers

    What is the primary concern when using the mandibular ramus as a donor site for bone grafting?

    <p>Release of the masseter muscle</p> Signup and view all the answers

    What is the primary risk associated with the insertion of a subperiosteal implant in the pterygomandibular space?

    <p>Damage to the medial pterygoid muscle</p> Signup and view all the answers

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