Why should the lingual flap not be reflected past the genial tubercles during implant surgery on a severely resorbed mandible?

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Reflecting the lingual flap past the genial tubercles during implant surgery on a severely resorbed mandible can have significant anatomical implications. Notably, the genioglossus muscle, which plays an essential role in tongue movement and airway patency, attaches to the genial tubercles. If the flap is reflected too far back, it can result in the detachment of this muscle, potentially leading to complications such as airway obstruction or swallowing difficulties.

Additionally, the position of the genial tubercles is crucial because it marks the location from which the genioglossus muscle originates, and preserving this area is essential for maintaining function. If reflected too far, the orientation and attachment of the genioglossus muscle could be altered, impacting not only tongue mobility but also breathing dynamics due to obstruction.

Hence, the correct answer indicates that both airway obstruction and detachment of the genioglossus muscle are reasons for not reflecting the flap past the genial tubercles. Maintaining the integrity of the anatomical structures in that area is vital for avoiding postoperative complications.

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