Nevertheless, not all reports on primary closure have been positive. Some authors have initiated controversy pointing out to the possibility of complications occurring during anaesthesia due to the relatively larger amount of drugs required, greater difficulty when intubating as well as the smaller anatomical dimensions of the cleft lip.
Sin embargo, no todo se ha reportado con resultados positivos en lo que al cierre primario respecta, autores han controversiado fundamentando en la posibilidad de una complicación anestésica debido a un relativo mayor requerimiento de fármacos, una mayor dificultad de intubación, así como las menores dimensiones anatómicas del LF.