Ball Attachment Screw Fracture Case Due to False Restoration Planning

Screw fracture is one of the mechanical complications that occur in implant restorations. This is a situation that generally arises after screw loosening depending on metal fatigue. There are plenty of factors that lead to screw loosening. As for this case, a series of complications that come along due to an inaccurate implant placement on the opposing jaw causes screw fracture of a ball attachment. After the fractured screw specimen was extracted with endodontic files, an ultrasonic cavitron and a probe for common examination without detriment to the screw hole, a new ball attachment was applied to the implant. Because of financial insufficiencies and an ongoing cervical discal hernia treatment, patient didn t want to have additional implants in her maxilla and new prostheses. Also she didn t want to replace ball attachments with locator attachments which used in cases that show limited vertical height. For this reasons existed prostheses was made available for usage then delivered to the patient. Screw loosening is a more recognized complication then screw fracture. A loose screw that is not retightened would be fractured. Adequate treatment planning, well arranged of abutment screw loosening and fracture. occlusal contacts and screw tightening with correct torque value will minimize the incidence.