Dental Implant Placement Safety Margins

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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?

Performing a double layer suture, first the muscle layer followed by the mucosal layer (C) Signup and view all the answers

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

Edematous swelling and spread of infection lingually (C) Signup and view all the answers

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

To provide accurate information about the location of anatomical structures (B) Signup and view all the answers

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

Apical to the apex of the bicuspid tooth (C) Signup and view all the answers

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

2mm from the crest of the alveolar ridge to the roof of the foramen (D) Signup and view all the answers

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

50 degrees upward from the mandibular canal (A) Signup and view all the answers

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

The anterior loop dimensions can vary from 0.0 to 7.5mm (B) Signup and view all the answers

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

The horizontal location of the mental foramen can vary between the canine and first molar teeth (B) Signup and view all the answers

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

Decreased available bone height superior to the mandibular canal (C) 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?

Perform a CT scan (C) Signup and view all the answers

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

3 (B) Signup and view all the answers

Which statement is true regarding the incisive canal?

It is a continuation of the mandibular canal mesial to the mental foramen (D) Signup and view all the answers

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

Avoid placing an implant in that area (D) 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?

Use a guide pin to help complete the operation (D) Signup and view all the answers

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

0.6 - 0.8 mm (B) Signup and view all the answers

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

5mm below (B) 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?

15mm (C) Signup and view all the answers

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

Halfway between the osseous crest and the median raphe (A) Signup and view all the answers

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

Sounding the bone with an anesthetic needle (D) Signup and view all the answers

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

86% (A) Signup and view all the answers

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

2mm (C) Signup and view all the answers

What is the average height of the superior genial tubercle?

$6.17$mm (A) Signup and view all the answers

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

Possible retrusion of the tongue and airway obstruction (D) 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?

The muscles overlie the mental foramen (C) 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?

To release tension and allow for coronal positioning of the flap (B) Signup and view all the answers

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

Release of the masseter muscle (D) Signup and view all the answers

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

Damage to the medial pterygoid muscle (C) Signup and view all the answers