Gunasekar, CNasser, K S Gamal AbdulSabarigirinathan, CKumar, K Ram2013-10-102013-10-102013-07Gunasekar C, Nasser K S Gamal Abdul, Sabarigirinathan C, Kumar K Ram. Modified snap-on attachment with 'O-ring' for two piece hollow bulb obturator. Indian Journal of Dental Research. 2013 Jul-Aug; 24(4): 507-510.http://imsear.searo.who.int/handle/123456789/148741Restoration of near normal functions in patients who have been treated with hemimaxillectomy is generally difficult, in view of the restriction in mouth opening following healing of large surgical wound. Further, the extent and nature of the surgical defect differ from patient to patient. Thus, design of an obturator needs to be patient oriented. In this report, we describe a novel snap-on attachment with O-ring in a conventional two piece hollow bulb obturator for a 70-year-old male treated for carcinoma of the left maxilla and sinus.enHollow bulb obturatorlarge defectmaxillectomyO-ring retentionprosthesissnap-on attachmentArticle