Known as 'Orthognathic surgery', this surgery is to correct deformities of jaw and tooth.

This kind of surgery is rare in the country although there are many patients suffering from such congenital deformities, said the surgeons of the department at a lecture on 'Orthognathic surgery' yesterday.

"The exact number of people suffering from jaw defect is unknown and we do not know how many children will go through their entire lives without being able to smile," they added.

The speakers said congenital deformity in the jaw is responsible for an ugly appearance of the face and is a major problem for girls who can never think of marriage with such a physical deformity.

On top of that, many people of the country are still unaware that the problem can be remedied, and obviously the earlier the treatment the better the result, they added.

They also discussed the latest technologies and developments of orthognathic surgery.

Dr Shahid Aziz, a renowned orthognathic surgeon from New Jersy Medical University of USA who will perform the surgery, presented a keynote paper at the seminar.

Prof Motiur Rahman Molla, chairman of oral and maxillofacial surgery department of BSMMU, chaired the session sponsored by Orion laboratories.

Dr Mohammad Zakirul Karim, senior manager of Orion, was also present.