Restoration of the Atrophic Maxilla with Four Narrow and Ultrashort Implants
International Journal of Clinical Oral and Maxillofacial Surgery
Volume 4, Issue 2, December 2018, Pages: 35-41
Received: Sep. 6, 2018; Accepted: Oct. 9, 2018; Published: Oct. 27, 2018
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Rolf Ewers, University Hospital for Cranio-Maxillofacial and Oral Surgery Medical University of Vienna, Vienna, Austria
Mauro Marincola, Implant Dentistry Center, University of Cartagena, Cartagena, Colombia
Vincent Morgan, Bicon Implant Institute, Boston, USA
Paolo Perpetuini, Dental Laboratory, Cisterna di Latina, Italy
Florian Wagner, University Hospital for Cranio-Maxillofacial and Oral Surgery Medical University of Vienna, Vienna, Austria
Rudolf Seemann, University Hospital for Cranio-Maxillofacial and Oral Surgery Medical University of Vienna, Vienna, Austria
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Presented is a prospective cohort study of 72 calcium phosphate coated Bicon Integra-CP implants for 18 patients with pronounced class V and VI maxillary atrophy according to the classification of Cawood and Howell (1988) and treated with four ultrashort 4.0 x 5.0 mm locking taper implants. The patients were divided into three groups. For the first group, four 4.0 x 5.0 mm implants were placed. For the second group, two narrow 3.0 x 8.0 mm implants were placed in very thin anterior alveolar bone. For the third group, the alveolar bone in the premolar and molar region was too narrow and too shallow; therefore, 4.0 x 5.0 mm implants were placed in the maxillary tuberosities. All implants were restored with TRINIA, a metal-free fiber-reinforced hybrid resin CAD/CAM material. Two patients lost one implant each during the observation period, which were subsequently replaced successfully. The cumulative one-year patient-based implant survival rate (CSR) was 88.8%. The cumulative one-year implant-based survival rate was 97.2%. Since the patients with a failed implant were able to wear their prosthesis with only three implants while the replacement implants were being osseointegrated, this resulted in 100% prosthetic success. The good result allows the conclusion that the long-term use of four ultrashort and narrow locking taper implants reveal a comparable outcome to standard size implants with complex bone augmentations.
Ultrashort Implants, Locking Taper or Conical Implants, Maxillary Atrophy, Maxillary Tuberosity Implants, Avoiding Sinus Lift Procedures, Avoiding Augmentation Procedures, Metal-Free Fiber-Reinforced Hybrid Resin Prosthesis, CAD/CAM Prostheses Fabrication
To cite this article
Rolf Ewers, Mauro Marincola, Vincent Morgan, Paolo Perpetuini, Florian Wagner, Rudolf Seemann, Restoration of the Atrophic Maxilla with Four Narrow and Ultrashort Implants, International Journal of Clinical Oral and Maxillofacial Surgery. Vol. 4, No. 2, 2018, pp. 35-41. doi: 10.11648/j.ijcoms.20180402.11
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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