Computer-Guided Implant Placement in a Patient With Severe Atrophy

Abstract

Computer software associated with imaging techniques facilitates diagnosis, planning, and management in cases of severe maxillary atrophy, by reducing the incidence of complications and improving the postoperative course and functional outcome. This article reports on a case of a 66-year-old woman with maxillary atrophy. Computer software was used to plan and position 6 maxillary and 4 mandibular implants, taking maximum advantage of the remaining bone. Bicorticalization was sought by angulation and implant fixation in the buttresses, while rehabilitation was carried out by means of a fixed screw-retained upper prosthesis and a lower overdenture. No implants were lost after 36 months of follow-up. This technique optimized precise implant placement as planned without the need for more complex reconstruction techniques.

The use of Computer Guided Implant Surgery in Oral Rehabilitation: A Literature Review

“…12 However, positive results were also found in another study, that showed reduction of standard deviation with consequent decrease in surgical errors, with the improvement in the coronal osteotomy from 1.5 to 0.9 mm, apical positioning improvement and better angulation from 8° to 4.5°. 13 The most commonly complications in guided surgery are: incorrect perforation of bone tissue, implants loss, maladjustment of prosthetic components and prosthesis loss. These complications may be the result from errors in the various stages of surgical preparation that involves imaging scanning, surgical guideplanning, and even their fi xation during the site preparation.…”

Zygomatic and Maxillary Implants Inserted by Means of Computer-Assisted Surgery in a Patient With a Cleft Palate

“…3). 22,23 Computer-assisted surgery offers the clinician numerous advantages in implant-prosthetic rehabilitation in totally or partially edentulous patients, such as visualization of anatomic structures, evaluation of implant position and inclination, easier and more accurate implant insertion, and the possibility of using prefabricated prostheses. 12 In this article, we present a case report of a patient with a cleft palate and other bone defects who we decided to treat in 2 steps: the first consisted of a bone graft from the iliac crest and 2 zygomatic implants, 20 and the second comprised 4 maxillary implants and the immediate loading of the provisional prosthesis with the aid of a computer-assisted surgery (Fig.…”

Analysis of the atrophic mandible rehabilitated with fixed total prosthesis on mono or bicortical implants

“…Morphologically, the basal cortical mandible´s bone, in the anterior segment, is thicker than the buccal and lingual cortical plates 5 , so bicorticalization promotes greater primary stability, due to greater contact between the implant and this basal bone, and can be applied in various regions of the oral cavity where the bone quality indicates poor prognoses for implant stabilization 2 , 6 ; however, they are associated with higher rates of implant fractures than monocortical implants 7 , and has also been associated with the computer-guided installation of implants in atrophic jaws 6 .…”