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 (C)</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 (C)</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 (B)</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 (C)</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 (D)</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 (A)</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 (B)</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 (B)</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 (C)</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 (C)</p> Signup and view all the answers

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

<p>3 (B)</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 (D)</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 (D)</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 (D)</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 (B)</p> Signup and view all the answers

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

<p>5mm below (B)</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 (C)</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 (A)</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 (D)</p> Signup and view all the answers

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

<p>86% (A)</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 (C)</p> Signup and view all the answers

What is the average height of the superior genial tubercle?

<p>$6.17$mm (A)</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 (D)</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 (C)</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 (B)</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 (D)</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 (C)</p> Signup and view all the answers

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