Test on Lip and Cheek Reconstruction Techniques

Question 1: To avoid ectropion, a cheek rotation advancement flap should be suspended from the underlying bony skeleton.

A. Ano

B. Ne

Explanation: The study materials state that to avoid ectropion, which is a complication of a cheek rotation advancement flap due to gravitational pull, the flap should be suspended from the underlying bony skeleton using periosteal sutures or an anchoring device.

Question 2: According to the provided study materials, which of the following are important aspects of postoperative care after lip reconstruction?

A. Patients should always use a toothbrush in the early postoperative period to maintain oral hygiene.

B. Rinsing with a mouthwash after eating is generally instructed for 4 or 5 days, regardless of reconstruction complexity.

C. For extensive reconstructions, patients may need a liquid or soft diet for several days.

D. Sucking a liquid diet through a straw is often more comfortable for patients, especially those with an Abbé flap.

Explanation: The study materials state that rinsing with a mouthwash such as Peridex after eating for 4 or 5 days is generally instructed. It also mentions that for extensive reconstructions, a liquid or soft diet may be needed for several days, and patients often find it more comfortable to suck a liquid diet through a straw, particularly with an Abbé flap. Conversely, using a toothbrush in the early postoperative period may be uncomfortable and disrupt suture lines, making option 0 incorrect.

Question 3: The depressor anguli oris, along with the zygomaticus major, are identified as the two most important elevator muscles of the lip.

A. Ano

B. Ne

Explanation: The study materials state that the two most important elevator muscles are the zygomaticus major and the levator anguli oris. The depressor anguli oris is listed among the depressor muscles, not elevator muscles.

Question 4: Which specific nerve divisions are responsible for providing sensation to both the upper and lower lips?

A. The buccal and mandibular branches of the facial nerve.

B. The superior and inferior labial arteries.

C. The maxillary and mandibular divisions of the trigeminal nerve.

D. The levator anguli oris and depressor anguli oris nerves.

Explanation: According to the study materials, 'The maxillary and mandibular divisions of the trigeminal nerve provide sensation to both upper and lower lips.' The other options describe blood supply, motor innervation for lip movement, or are not identified as providing sensory innervation to the lips in the text.

Question 5: The Estlander flap requires pedicle division 14-21 days after the initial procedure, similar to the Abbé flap.

A. Ano

B. Ne

Explanation: The study materials state that for an Estlander flap, "since the flap is rotated, no pedicle division is necessary." In contrast, for the Abbé flap, pedicle division is performed 14–21 days later.