DELIVER OVERDENTURE TYPE "A"

Locator® abutments

Inventory all parts received from the laboratory immediately after arrival of the case in the office. If the original impression for the working model was over already installed attachment abutments (Locator, ball type a.o.) proceed to deliver the denture in the usual fashion. If the original impression was a fixture level impression (direct or indirect) and the laboratory choose the abutment attachments (Locator® tutorial, ball type a.o.) the abutments need to be transferred from the model to the exact corresponding implant in the patients mouth. Because the attachment abutments are offered machined in different collar heights it is important to transfer the abutments on to the same correlating implant position in the patients mouth as they were positioned on the working model during processing.

In most instances it is not necessary to anesthetize the patient for the delivery of the restoration unless tissue recontouring around the implants is planned. Remove any temporary restorations, temporary abutments or trans mucosal healing abutments. Irrigate the inside of the implant with chlorhexidine and flush out any debris.

Locator® driver

The attachment abutments are either hand tightened or torqued to manufacturers recommendation. Have torque wrench or hand driver with appropriate driver tip on hand. Laboratories often offer torque wrenches and hand drivers for a nominal rental fee or contact your local implant manufacturers account representative. Familiarize yourself with the torque wrench, torque settings and how it works.

Final torque

Transfer the attachment abutments from the model to the patient and hand tighten the attachment abutments. Take a panograph to ensure all components are seated and as a bone level baseline record. Using pressure indicator paste (udent®), indentify and relieve any pressure areas like a regular full denture. Adjust occlusion and equalize lateral contacts. Torque all attachment abutments with the torque wrench or hand driver to implant manufacturers specification (Torque chart). Wait a few minutes and torque the abutments again to specification.