Fig. 5

Intraoperative photographs. a Dissection of the muscle layer and exposure of the orbicularis oris muscle are performed. b The final muscle closure is performed. c, d The final Z-plasty surgical technique is used
Intraoperative photographs. a Dissection of the muscle layer and exposure of the orbicularis oris muscle are performed. b The final muscle closure is performed. c, d The final Z-plasty surgical technique is used