Zygomatic Implant-Supported Prosthesis: When the Prosthetic Rehabilitation Affects the Function: A Case Report (original) (raw)
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Retrospective Analysis of Zygomatic Implants for Maxillary Prosthetic Rehabilitation
2020
PURPOSE The aim of this study was to evaluate 141 zygomatic implants for the reconstruction of severely atrophic maxillae. MATERIALS AND METHODS In this retrospective case series study, zygomatic implants were placed under general anesthesia. Inclusion criteria were as follows: ASA I or ASA II, age older than 18 years, inadequate bone for restoration with conventional implants, alternative augmentation procedures considered either inappropriate or contraindicated, absence of a medical condition related to implant failure, and providing written consent. Zygomatic implants used in the study consisted of three different brands: NobelZygoma, Southern Implants System, and Implantswiss. RESULTS The study included 45 patients, in whom 141 zygomatic implants were placed. The mean age of the patients was 51.76 (range: 23 to 72) years. Three patients were rehabilitated with removable prostheses, 19 patients with fixed prostheses, and 23 patients with hybrid prostheses. The overall complicatio...
European journal of oral implantology, 2014
To report retrospectively on the 5-year follow-up results of the rehabilitation of complete edentulous atrophied maxillae, using extra-maxillary zygomatic implants alone or in combination with conventional implants. This retrospective report includes an initial cohort of 39 patients (30 women and 9 men), with a mean age of 53 years, followed for 5 years. The patients were rehabilitated with 39 fixed prostheses and 169 implants (92 zygomatic implants inserted extra-maxillary and 77 conventional dental implants). A provisional prosthesis was manufactured and attached via multiunit abutments secured to the implants on the same day as implant placement. According to patient desires and each clinical situation, either an acrylic resin, a metal-acrylic or metal-ceramic final prosthesis was inserted approximately 6 months after implant placement. Outcome measures were: prosthesis success; implant success; complications; probing pocket depths; marginal bleeding; and marginal bone levels (on...
Clinical Implant Dentistry and Related Research, 2006
Background Prosthetic rehabilitation with implant-supported prostheses in the atrophic edentulous maxilla often requires a bone augmentation procedure to enable implant placement and integration. However, a rigid anchorage can also be achieved by using so-called zygomatic implants placed in the zygomatic arch in combination with regular implants placed in residual bone.Purpose The aim of the present study was to report on the clinical outcome of using zygomatic and regular implants for prosthetic rehabilitation of the severely atrophic edentulous maxilla.Materials and Methods Sixty-nine consecutive patients with severe maxillary atrophy were, during a 5-year period, treated with a total of 69 fixed full-arch prostheses anchored on 435 implants. Of these, 131 were zygomatic implants and 304 were regular implants. Fifty-seven bridges were screw-retained and 12 were cemented. The screw-retained bridges were removed at the examination appointments and each implant was tested for mobility. In addition, the zygomatic implants were subjected to Periotest® (Siemens AG, Bensheim, Germany) measurements. The patients had at the time of this report been followed for at least 6 months up to 5 years in loading.Results Two regular implants failed during the study period giving a cumulative survival rate of 99.0%. None of the zygomatic implants was removed. All patients received and maintained a fixed full-arch bridge during the study. Periotest measurements of zygomatic implants showed a decreased Periotest values value with time, indictating an increased stability. Three patients presented with sinusitis 14–27 months postoperatively, which could be resolved with antibiotics. Loosening of the zygomatic implant gold screws was recorded in nine patients. Fracture of one gold screw as well as the prosthesis occurred twice in one patient. Fracture of anterior prosthetic teeth was experienced in four patients.Conclusions The results from the present study show that the use of zygomatic and regular implants represents a predictable alternative to bone grafting in the rehabilitation of the atrophic edentulous maxilla.
Prosthetic Rehabilitation for Edentulous Patient with an Acquired Palatal Defect: A Case Report
Periodontics and Prosthodontics, 2016
The rehabilitation of a patient with partial resection of soft palate is a challenge. Surgical management is considered one of the preferred treatment options for such cases. However, this is not possible in several clinical situations, for such situations the prosthetic management would be a valuable alternative. This clinical report describes the rehabilitation of an acquired palatal defect with palatal prosthesis to restore the physical separation between the nasopharynx and oropharynx.
Compendium of continuing education in dentistry, 2018
Treatment of severely resorbed partially or completely edentulous maxillae can include the utilization of the zygomatic process for immediate implant fixation and stabilization with immediate function. This approach may alleviate the need for significant grafting to enable implant placement in the posterior maxilla and allow implants to be placed into denser, more stable bone. Zygomatic implants, which have been used clinically for the past 20 years in the treatment of the severely resorbed maxilla, allow implant placement to support fixed prosthetics. Their usage can potentially shorten treatment time and reduce costs, as the need to wait for osseous graft maturation is eliminated. Guided surgical approaches are being utilized to maximize placement of the prosthetic platform of these implants.
International journal of oral and maxillofacial surgery, 2014
The aim of this retrospective observational cohort study was to analyse and report the 5-10-year survival rates of endosseous zygomatic implants used in the rehabilitation of the atrophic maxilla. Forty-three consecutive zygomatic implant placements in 25 patients were evaluated over a 5-10-year period. All zygomatic implant surgery was carried out under general anaesthesia. Nobel Biocare zygomatic machined-surface implants were used, and placement was undertaken using the modified sinus slot method. The main outcome measures and determinants for success were survival of the restored implants and the proportion of originally planned prostheses delivered to patients. Of the 25 patients treated, 12 were male and 13 were female; 19 were non-smokers, and the mean age at time of surgery was 64 years. Patients were treatment-planned for implant-retained bridgework, a removable prosthesis retained by fixed cast gold or milled titanium beams, or magnet-retained removable prostheses. A combi...
REHABILITATION OF SEVERELY RESORBED MAXILLAE WITH ZYGOMATIC IMPLANTS: A LITERATURE REVIEW
Background: The use of endosseous implants is a routine treatment modality for replacing missing teeth. However, the use of dental implants is limited by the presence of adequate bone volume permitting their anchorage. Several bone augmentation techniques have been applied to solve this problem. During the last two decades zygomatic implants have become a proposed alternative to bone augmentation procedures for the severely atrophic maxilla. The main advantages of this kind of rehabilitation could be that bone grafting may not be needed and a fixed prosthesis could be applied sooner. Objective: The purpose of this review is to examine the evidence concerning the management of severely resorbed edentulous maxillae using implants placed in the zygomatic bone. Data collection: The articles reported in this literature review were searched on pubmed/medline database, considering only the English-written scientific journals. Outcomes: A Zygomatic Success Code, describing criteria to score the success of a rehabilitation anchored on zygomatic implants, is represented by the outcomes of these variables: implant stability, associated sinus pathology, peri-implant soft tissues condition and prosthetic results. Excellent results were observed for zygomatic implants. Many studies showed an implant survival rate of 100% combined to similar prosthetic results.The cumulative survival rate (CSR) and patients’ satisfaction indicate that zygomatic implants could be an effective alternative for the management of an atrophic maxilla and, in some cases, be the only treatment solution. However, there are no well-defined criteria that help the clinician to evaluate this prosthetic rehabilitation. Conclusions: Thus, further studies are necessary to assess the longterm prognosis of the zygoma implant and whether these implants offer some advantages over other techniques for treating atrophic maxillae. Keywords: atrophic maxilla, zygomatic implants, dental implants, surgical technique, implants success criteria