Advances in dentistry and the increasing desire of patients to preserve their teeth have led to the treatment of teeth that would previously have been removed. The first molars of the lower jaw are the teeth that are most frequently extracted due to caries and periodontal disease. These teeth are the most important position for occlusion and also have a large pericemental area. Therefore, for any defect at the root, whether mesial or distal, extraction is the most commonly planned treatment. Under certain conditions, only the diseased part of the tooth can be extracted after endodontic treatment. A modified fixed partial denture is fabricated to splint the remaining part of the tooth to the adjacent teeth. Although this procedure is demanding, it is easy to perform and can be successfully maintained.