Journal of Oral Implantology February 2013 - (Page 110)

CASE REPORT A Technique for Constructing a New Maxillary Overdenture to a Nonretrievable Implant Connecting Bar Bulent Uludag, DDS, PhD1* Serdar Polat, DDS1 Volkan Sahin, DDS, PhD2 Gurkan Goktug, DDS3 The most frequent mechanical complications of the bar-implant-retained overdentures are loosening of the bar screws and the need to reactivate the retentive clips. This article describes a technique to construct a new maxillary overdenture to a nonretrievable round-profile implant connecting bar with 2 distally placed attachments. The retainer round-profile bar was nonretrievable due to a worn retaining screw head. Attachment transfer analogs are used to transfer the position of the attachments to the master cast. The technique allows the clinician to construct new overdentures without the need for removal of the implant connecting bar. Reduced chairside time, reduced treatment cost, and increased patient satisfaction are the major advantages of the technique. Key Words: maxillary bar-implant-retained overdenture, attachments INTRODUCTION T he use of dental implants for prosthetic rehabilitation of an edentulous jaw is a predictable and successful treatment modality.1–3 With the advent of predictable implant support and retention, the implant-supported overdenture (IOD) has become an accepted treatment modality.4 A common form of this treatment modality is the use of an implantretained bar to support an overdenture. This form of treatment is associated with a high patient acceptance rate because of increased denture retention and stability, increased biting efficiency, and improved quality of life.1,5,6 However, this form 1 Department of Prosthodontics, Ankara University, Faculty of Dentistry, Ankara, Turkey. 2 Kırıkkale University, Faculty of Dentistry, Department of Prosthodontics, Kırıkkale, Turkey. 3 Boston University, Goldman School of Dental Medicine, Department of Prosthodontics, Boston, Mass. * Corresponding author, e-mail: bculudag@gmail.com DOI: 10.1563/AAID-JOI-D-11-00042 110 Vol. XXXIX /No. One /2013 of treatment has disadvantages and complications, such as prosthesis fracture, the extra bulk caused by the presence of the metal bar, and the need for frequent maintenance.7–9 In addition, lower success rates are reported for the maxilla, especially for the IOD treatment modality.8,10–15 In general, poor bone quality and bone volume, short implant length, and poor initial stability are factors associated with the lower success rate for implants in the maxilla compared with the mandible.16–18 Compared with fixed prostheses or mandibular overdentures, IODs in the maxilla require a considerable degree of postinsertion prosthetic maintenance.14,19 Most mechanical complications were found to occur soon after denture insertion and were easily resolved.8,15 Kiener et al20 reported the effectiveness of maxillary IODs. During an average period of 3.2 years, the most frequent mechanical complications were loosening of the bar screws and the need to reactivate the retentive clips; during the first year, mucosal irritation and the need for

Table of Contents for the Digital Edition of Journal of Oral Implantology February 2013

Could the Fountain of Youth Be All in Your Bones?
Vertical Bone Augmentation With Simultaneous Implant Placement Using Particulate
Evaluation of the Bone Healing Process Utilizing Platelet-Rich Plasma Activated by Thrombin
Effect of Model Parameters on Finite Element Analysis of Micromotions in Implant Dentistry
Peri-Implant Defect Augmentation With Autogenous Bone: A Study in Beagle Dogs
Would Nitric Oxide be an Effective Marker for Earlier Stages of Peri-Implant Disease? An
The Effect of Different Surface Treatments on Cement-Retained Implant-Supported
Effect of Rotating Osteotomes on Primary Implant Stability—An In Vitro Investigation
Horizontal Augmentation Through the Ridge-Split Procedure: A Predictable Surgical
The Bis-Acryl Stent
Clinical, Histological, and Histomorphometrical Analysis of Maxillary Sinus Augmentation
A Technique to Salvage a Single Implant-Supported Fixed Dental Prosthesis Having a
Ridge Expansion and Immediate Placement With Piezosurgery and Screw Expanders in
Pterygoid Implants for Maxillofacial Rehabilitation of a Patient With a Bilateral Maxillectomy
Technology in Maxillary Premolar Region: A New Strategy for Soft Tissue Management
Fracture of Anterior Iliac Crest Following Bone Graft Harvest in an Anorexic Patient: Case
A Technique for Constructing a New Maxillary Overdenture to a Nonretrievable Implant
Edentulous Maxillary Arch Fixed Implant Rehabilitation Using a Hybrid Prosthesis Made of

Journal of Oral Implantology February 2013