40 Questions
What is the primary concern when designing a flap for periapical surgery?
Placing the incision over solid bone to provide visual access
What is the advantage of using a full mucoperiosteal flap in periapical surgery?
It keeps intact supraperiosteal vessels
What should be avoided when designing a flap for periapical surgery?
All of the above
What is the purpose of a horizontal incision in periapical surgery?
To extend at least one to two teeth lateral to the tooth to be treated
What is the purpose of a vertical incision in periapical surgery?
To allow the tissue retractor to seat on solid bone
What is a major disadvantage of the triangular flap in periapical surgery?
Limited surgical access
What is a potential complication of disrupting vertically oriented blood vessels during periapical surgery?
Increased bleeding
Which type of flap is contraindicated in mandibular posterior teeth?
Rectangular flap
In which situations is the palatal approach in periapical surgery considered challenging?
Due to limited visibility and accessibility
What is an advantage of the rectangular flap in periapical surgery?
Good surgical access
What is the primary purpose of a periosteal elevator in flap reflection during periapical surgery?
To separate the soft tissues from the alveolar bone
What is a contraindication for the trapezoidal flap in periapical surgery?
Periradicular surgery
What is a consequence of a retractor resting on the base of reflected tissues during periapical surgery?
Damage to microcirculation and delayed healing
What is an indication for the horizontal flap in periapical surgery?
Repair of cervical defects
What type of flap design is indicated for surgical procedures in palatal roots of molars and premolars?
All of the above
In papilla-base flap, where is the horizontal incision located?
At the papillary base
What is the disadvantage of submarginal curved flap design?
Poor surgical access
What is the advantage of submarginal scalloped rectangular flap design?
Adequate surgical access
Why is submarginal curved flap design not recommended for periradicular surgery?
It has poor surgical access
What is the similarity between submarginal curved and submarginal scalloped rectangular flap designs?
Both do not involve marginal or interdental gingivae
What is the main purpose of placing a root-end filling during periapical surgery?
To prevent recontamination of the periradicular tissues
What is a crucial factor to consider when determining the extent of root-end resection?
Accessibility of the surgical site
What is an advantage of using an ER: YAG laser in periapical surgery?
Reducing the risk of trauma to adjacent tissue
What is a key consideration when designing a flap for periapical surgery?
The location of adjacent vital structures
What is the primary goal of the second stage of wound healing in periapical surgery?
Preventing recontamination of the periradicular tissues
What is the ideal temperature range to avoid during osseous tissue management in periapical surgery?
47-50°C
What is the purpose of using a high-speed handpiece that exhausts air from the base in periapical surgery?
To reduce the risk of air embolism
How can the presence of small defects in the bone be confirmed during periapical surgery?
By placing a piece of lead sheet or gutta-percha in the defect
What is the purpose of measuring the entire tooth length with a file on a preoperative radiograph in periapical surgery?
To determine the location of the root apex
What is the consequence of heat generation during osseous tissue management in periapical surgery?
Greatly reduced bone formation and cellular damage
What is the primary purpose of resecting the apical 3 mm of the root during periapical surgery?
To eliminate most accessory and lateral canals
What is a disadvantage of beveling the root-end resection at an angle of 30 to 45 degrees?
It increases the risk of leakage
What is the advantage of using a zero-degree bevel in root-end resection?
It exposes fewer dentinal tubules
What is the purpose of positioning the straight fissure bur at the desired angle during root-end resection?
To predetermine the amount of root-end to be resected
What is a disadvantage of the straight fissure bur technique in root-end resection?
It may remove more root structure than necessary
What is the primary concern when resecting the apex of the root during periapical surgery?
To prevent damage to vital structures
What is the advantage of maintaining maximum root length during periapical surgery?
It reduces the risk of leakage
Why is a bevel of 0-10 degrees recommended for root-end resection?
To reduce the risk of leakage
What is the purpose of shaving away the root from the apex during root-end resection?
To shave away the root from the apex to the desired length
What is the advantage of using a straight fissure bur in root-end resection?
It allows for continual observation of the root-end during cutting
This quiz covers the principles of anesthesia and soft tissue management in dental surgery, including flap design and retraction techniques.
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