scholarly journals Success Rate of Zygomatic Implants for Rehabilitation of Severely Atrophied Maxillae: A Review of the Literature

2018 ◽  
Vol 3 (1) ◽  
pp. 771-777
Author(s):  
Felipe Cid ◽  
Bárbara Soto
Keyword(s):  
Success Rate ◽  
Treatment Modalities ◽  
Gingival Hyperplasia ◽  
Prosthetic Reconstruction ◽  
Early Loading ◽  
Posterior Maxilla ◽  
Zygomatic Implants ◽  
Fixed Prosthesis ◽  
Therapeutic Alternatives ◽  
Zygomatic Implant

Severe resorption in the posterior maxilla sectors as a result of tooth loss along with the process of pneumatization of the maxillary sinus, difficult the prosthetic rehabilitation supported by conventional implants due to the shortage of vertical bone availability. So that over the years they have designed therapeutic alternatives to help overcome these drawbacks. The zygomatic implant was introduced in 1988 by Branemark. This implant has a design which allows it to be positioned over the ridge to the height of the first molar, reducing vestibular cantilever up to 20 % and reducing complications of peri-implant inflammation, infection and gingival hyperplasia, which may lead to perforation horizontal process of the palatine bone. The purpose of this review is to determine the success rate of zygomatic implants for rehabilitation of severely atrophied maxillae. A total of 1410 zygomatic implants and 1673 Traditional implants were included in selected articles. Of these 1410 zygomatic Implants, 365 were conventional loading and 1045 were immediately and early loading, these had a success rate of 98.3 % and 98.7 %, respectively. Of these 1673 Traditional Implants, 463 were conventional loading and 1210 were immediately and early loading, they had a success rate of 93.9 % and 97.8 %, respectively. The overall success rate of zygomatic implants and Conventional implants was 98.6 % and 96.8%, respectively. The rehabilitation of severely atrophied maxilla with fixed prosthesis immediately and conventional loaded by zygomatic implants gives excellent results in the medium term. When comparing traditional treatment modalities, proposals for prosthetic reconstruction of severely atrophied maxilla, the zygomatico implant has the highest success rate over conventional treatments.

scholarly journals Oral Rehabilitation with Zygomatic Implants in a Patient with Cleft Palate

2019 ◽  
Vol 2019 ◽  
pp. 1-5 ◽  
Author(s):  
Guilherme José Pimentel Lopes de Oliveira ◽  
Mariana Schaffer Brackmann ◽  
Larissa Carvalho Trojan ◽  
Paulo Domingos Ribeiro Júnior ◽  
Luis Eduardo Marques Padovan
Keyword(s):  
Cleft Palate ◽  
Fibrous Tissue ◽  
Oral Rehabilitation ◽  
Atrophic Maxilla ◽  
Zygomatic Implants ◽  
Fixed Prosthesis ◽  
Edentulous Patients ◽  
The Right ◽  
Zygomatic Implant

Edentulous patients with an atrophic maxilla associated with lip-palate fissures have unpredictable results after undergoing grafting procedures. In situations where the atrophic maxilla does not adequately allow reconstruction, the use of zygomatic implants has been indicated, and probably these implants can be indicated for the rehabilitation of patients with lip-palate fissures. This case report describes the oral rehabilitation treatment of a patient with a lip-palate cleft treated with zygomatic implants and implant-supported fixed prosthesis with two years of follow-up. A 65-year-old female patient had a lip-palate cleft and previously underwent surgery to close the cleft. The patient had a severely atrophic maxilla and had difficulty adapting to a removable total prosthesis. Due to the small amount of bone remaining and extensive fibrous tissue in the palate region, a rehabilitation with conventional implants associated with zygomatic implants was chosen. Two zygomatic implants and a conventional implant were placed on the right side, and a zygomatic implant and conventional implant were placed on the left side; these implants were later activated by a protocol-type prosthesis. The zygomatic implants provided an adequate aesthetic and functional outcome of the prosthesis in a patient with cleft palate.

Stress Analysis of Prostheses Retained with Zygomatic Implants on Augmented and Non-Augmented Maxillary Sinus

2020 ◽  
Vol 10 (3) ◽  
pp. 336-340
Author(s):  
Hamiyet Güngör ◽  
Süleyman Kaman ◽  
Ozkan Ozgul ◽  
M. Ercüment Önder ◽  
Fethi Atil ◽  
...  
Keyword(s):  
Maxillary Sinus ◽  
Treatment Options ◽  
Three Dimensional ◽  
Von Mises Stress ◽  
Posterior Maxilla ◽  
Atrophic Maxilla ◽  
Zygomatic Implants ◽  
Von Mises ◽  
Three Dimensional Finite Element ◽  
Zygomatic Implant

Zygomatic implants for toothless, atrophic posterior maxilla are effective treatment options and it is known that graft use has a positive effect on the zygomatic implant stability with this treatment option. The aim of this study was to evaluate the stress values and their distribution at zygomatic implant-supported prosthetic infrastructure in augmented and non-augmented models. In this study, the three-dimensional finite element method was used and 2 zygomatic implants (47.5 × 4.0 mm), 2 conventional implants (13 × 3.75 mm) and atrophic maxilla with augmented and non-augmented maxillary sinus with prosthetic infrastructure, were modelled. A vertical load of 150 N was applied onto the maxillary model at 4 different regions (#9, #12, #14 and #15). The von Mises stress, which is produced as a result of loading of zygomatic implants and prosthetic infrastructure has been evaluated in augmented and non-augmented models. The highest von Mises stress value for the prosthetic infrastructure was determined in the non-augmented model as a result of the loading to region #9 (MPa 222,886). Consequently, grafting procedures will increase bone support and reduce stresses in the prosthetic substructure, especially in posterior loads in the maxilla with low bone density.

scholarly journals Rehabilitation of Posterior Maxilla with Zygomatic and Dental Implant after Tumor Resection: A Case Report

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Faysal Ugurlu ◽  
Coskun Yıldız ◽  
B. C. Sener ◽  
Atilla Sertgoz
Keyword(s):  
Case Report ◽  
Dental Implant ◽  
Tumor Resection ◽  
Posterior Maxilla ◽  
Zygomatic Implants ◽  
Dental Rehabilitation ◽  
Upper Jaw ◽  
The Right ◽  
Zygomatic Implant ◽  
Vascularized Bone

Zygomatic implants have been used for dental rehabilitation in patients with insufficient bone in the posterior upper jaw, due to, for example, tumor resection, trauma, or atrophy. Zygomatic implants are an alternative to complex free or vascularized bone grafting and distraction osteogenesis. A 42-year-old male patient with a severe defect in the right posterior maxilla, starting from the first canine region, which had occurred after tumor resection 3 years earlier, was referred to our department. One zygomatic implant (Brenemark System, Nobel Biocare, Goteborg, Sweden) to the zygoma and one dental implant to the canine region were placed. After a 5-month osseointegration period, a fixed denture was fabricated and adapted to the implants. Although the surgical and prosthetic procedures for zygoma implants are not easy, the final outcomes can be successful with appropriate planning.

Rehabilitation of Atrophic Posterior Maxilla With Zygomatic Implants: Review

2012 ◽  
Vol 38 (5) ◽  
pp. 653-657 ◽  
Author(s):  
Eugenia Candel-Martí ◽  
Celia Carrillo-García ◽  
David Peñarrocha-Oltra ◽  
Maria Peñarrocha-Diago
Keyword(s):  
Patient Satisfaction ◽  
Success Rate ◽  
Treatment Success ◽  
Surgical Techniques ◽  
Weighted Average ◽  
General Level ◽  
Suitable Alternative ◽  
Number Of Patients ◽  
Posterior Maxilla ◽  
Zygomatic Implants

The objective of this study was to review the published literature to evaluate treatment success with zygomatic implants in patients with atrophic posterior maxilla. Studies from 1987 to 2010 were reviewed. In each study, the following were assessed: indications for treatment, number of patients, number of implants, length and diameter of the implants, surgical technique, prosthetic rehabilitation, success rate, complications, and patient satisfaction. Sixteen studies were included, with a total of 941 zygomatic implants placed in 486 patients. The follow-up periods ranged from 12 to 120 months. Three different surgical techniques were used to place zygomatic implants: intrasinus implants with the classic sinus window technique, the sinus slot technique, and extrasinus zygomatic implants. The most common restoration used was fixed prosthesis, with either delayed loading after 3–6 months (89%–100% success) or immediate loading (96.37%–100% success). The weighted average success rate was 97.05%, and the most frequent complication was maxillary sinusitis. The general level of patient satisfaction was high. Zygomatic implants have a high success rate and constitute a suitable alternative to treat severe posterior maxillary atrophy.

scholarly journals Accuracy of digital planning in zygomatic implants

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
B. Xing Gao ◽  
O. Iglesias-Velázquez ◽  
F. G.F. Tresguerres ◽  
A. Rodríguez González Cortes ◽  
I. F. Tresguerres ◽  
...  
Keyword(s):  
Surgical Planning ◽  
Angular Deviation ◽  
Surgical Experience ◽  
Proper Position ◽  
Zygomatic Implants ◽  
Digital Planning ◽  
Key Factor ◽  
Implant Length ◽  
Zygomatic Implant ◽  
Maxillary Atrophy

Abstract Background Zygomatic implants have been described as a therapeutic alternative for patients with severe maxillary atrophy in order to avoid bone augmentation procedures. Taking that into account, in these treatments, the key factor is the position of the implant, the virtual surgical planning (VSP) is widespread among most clinicians before surgery on the patient. However, there are no studies which evaluate the clinical relevance of these VSP. The aim of this study is to determine whether digital planning on zygomatic implants has any influence on the implant dimensions and position, even when performing conventional surgery afterwards. Results Fourteen zygomatic implants were placed in four patients. Pre-operative and post-operative helicoidal computed tomography were performed to each patient to allow the comparison between the digital planning and the final position of implants. Tridimensional deviation (TD), mesio-distal deviation (MDD), bucco-palatine deviation (BPD), and apico-coronal deviation (ACD) were evaluated as well as angular deviation (AD). Significative differences in apical TD were observed with a mean of 6.114 ± 4.28 mm (p < 0.05). Regarding implant position, only implants placed in the area of the first right molar reported significant differences (p < 0.05) for ACD. Also, implant length larger than 45 mm showed BPD significative differences (p < 0.05). Conclusions Zygomatic implant surgery is a complex surgical procedure, and although VSP is a useful tool which helps the clinician determine the number and the length of zygomatic implants as well as its proper position, surgical experience is still mandatory.

Rehabilitation of a Patient with Cleft Lip and Palate with an Extremely Edentulous Atrophied Posterior Maxilla Using Zygomatic Implants: Case Report

2004 ◽  
Vol 41 (5) ◽  
pp. 571-574 ◽  
Author(s):  
Anh Viet Pham ◽  
Marcelo Abarca ◽  
Albert De Mey ◽  
Chantal Malevez
Keyword(s):  
Case Report ◽  
Bone Grafting ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Oral Implants ◽  
Alveolar Cleft ◽  
Dental Prostheses ◽  
Posterior Maxilla ◽  
Zygomatic Implants ◽  
Dental Rehabilitation

Objective This case report describes the clinical and surgical management of a patient with a unilateral alveolar cleft and associated extremely atrophied totally edentulous maxilla. Method Two zygomatic implants and four endosseous oral implants were placed under general anesthesia in a compromised maxilla to rehabilitate a 33-year-old patient with cleft lip and palate. The two specially designed zygomatic implants were utilized to avoid the need for bone grafting in the patient. The final prosthetic rehabilitation was an esthetic and functional maxillary overdenture prosthesis supported by implants. Results Preliminary results have shown how dental prostheses supported by endosseous implants in grafted alveolar cleft are a reliable possibility in the dental rehabilitation of this malformation. Conclusion The use of zygomatic implants may be considered a reliable alternative to more resource-demanding techniques such as bone grafting in patients with cleft palate.

Rehabilitation of the Atrophic Posterior Maxilla With Pterygoid Implants: A Review

2012 ◽  
Vol 38 (S1) ◽  
pp. 461-466 ◽  
Author(s):  
Eugenia Candel ◽  
David Peñarrocha ◽  
Maria Peñarrocha
Keyword(s):  
Patient Satisfaction ◽  
Bone Loss ◽  
Weighted Average ◽  
Success Rates ◽  
Number Of Patients ◽  
Posterior Maxilla ◽  
Clinical Series ◽  
Fixed Prosthesis ◽  
Success Of Treatment

The purpose of this article is to review the literature published and to assess the success of treatment of patients with atrophic posterior maxilla with pterygoid implants. Studies from 1992 to 2009 on patients with atrophic posterior maxilla rehabilitated with pterygoid implants were reviewed. Those reporting clinical series of at least 5 patients with atrophic posterior maxilla (Class IV and V of Cawood and Howell), rehabilitated with pterygoid implants and fixed prosthesis, and with 12 months minimum follow-up were included. In each study the following were assessed: number of patients, number of implants, surgical technique, prosthetic rehabilitation, success rate, bone loss, complications and patient satisfaction. Thirteen articles were included, reporting a total of 1053 pterygoid implants in 676 patients. The weighted average success of pterygoid implants was 90.7%; bone loss evaluated radiographically ranged between 0 and 4.5 mm. No additional complications compared with conventional implants were found, and patient satisfaction level with the prosthesis was high. Pterygoid implants have high success rates, similar bone loss levels to those of conventional implants, minimal complications and good acceptance by patients, being therefore an alternative to treat patients with atrophic posterior maxilla. Two anatomical locations in which implants are placed in the retromolar area can be distinguished: the pterygoid process and the pterygomaxillary region. Implant lengths and angulations vary between these two techniques.

scholarly journals Giant Cell Tumor of Bone, current treatments, and potential therapeutic alternatives

2020 ◽  
pp. 13
Author(s):  
Keyword(s):  
Giant Cell Tumor ◽  
Giant Cell ◽  
Research Work ◽  
Cell Tumor ◽  
Treatment Modalities ◽  
Malignant Degeneration ◽  
Primary Malignancy ◽  
Primary Bone Tumor ◽  
Advantages And Disadvantages ◽  
Therapeutic Alternatives

Giant cell tumor of bone (GCTB) is a primary bone tumor, locally aggressive. For many, a GCTB is considered a tumor with an unpredictable behavior, particularly regarding recurrences, pulmonary implants, and the possibility of primary malignancy. In terms of risk of recurrence, it is known that it is associated with the type of treatment used initially for the GCTB. The greater the number or recurrences, the greater the risk of pulmonary implants, and the greater the risk of malignant degeneration. Therefore, much of the prognosis of this tumor could be related to the type of initial treatment. Hence the importance of the treatment theme. This review includes a comparison between the various modalities for treatment in GCTB, considering the advantages and disadvantages of each one. Existing GCTB treatments are not 100% safe and effective at the same time. and this is the reason why the search for other treatment modalities should continue to offer a better oncologic and functional outcome to patients. In the end of this review, based on research work, we also mention other possible therapeutic options that could be explored and used in the future for GCT treatment.

scholarly journals Rehabilitation of Maxillary Defect Using Zygomatic Implant Retained Obturator

2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
Mounika Ayinala ◽  
Gautam Shetty
Keyword(s):  
Hard Palate ◽  
Odontogenic Myxoma ◽  
Prosthetic Rehabilitation ◽  
Implant Placement ◽  
Heat Cure ◽  
Maxillary Defect ◽  
Zygomatic Implants ◽  
And Function ◽  
Zygomatic Implant

Tumors involving the hard palate, maxillary sinus, or nasal cavity require maxillectomy based on the extent of the lesion. Lack of these boundaries affects the speech, esthetics, and masticatory function. Prosthetic rehabilitation of these defects can be done utilizing zygomatic implants. This present case describes the use of a zygomatic implant to retain a maxillary obturator in a 22-year-old male patient following partial maxillectomy (Brown’s Class 2b) due to odontogenic myxoma. A surgical obturator was secured in position subsequent to the implant placement. Following the healing period, an interim obturator using heat cure acrylic was fabricated. Mechanical retention for the definitive obturator was obtained through the ball attachment suspended from the multiunit abutment of the zygomatic implant. The case was followed up closely for a year to evaluate the function of the prosthesis. The prosthetic rehabilitation not only promoted esthetics and function but also improved the patient’s quality of life.

scholarly journals The Role of Intraarterial Chemotherapy in the Management of Retinoblastoma

2020 ◽  
Vol 2020 ◽  
pp. 1-16 ◽  
Author(s):  
Aleksandra Pekacka
Keyword(s):  
Success Rate ◽  
Retention Rate ◽  
Intraarterial Chemotherapy ◽  
Treatment Modalities ◽  
Technical Success ◽  
Secondary Neoplasms ◽  
Systemic Complications ◽  
Technical Success Rate

Introduction. Retinoblastoma is the most common primary intraocular neoplasm in children. With the advances in medicine, the armamentarium of available treatment modalities has grown. Intraarterial chemotherapy is a relatively new treatment method with promising outcomes. The purpose of this literature review is to evaluate its role in the management of retinoblastoma. Methods. A systematic online search was conducted using Ovid Embase and Ovid Medline. The final results included 23 studies. The studies were published between 2011 and 2019. The studies evaluated the technical success rate of IAC, globe salvage rate, and ocular and systemic complications, as well as the occurrence of deaths, metastasis, and secondary neoplasms. In total, 1827 eyes with retinoblastoma were analysed. The follow-up was between 0 and 252 months. Results. Overall globe retention rate ranged from 30% to 100%. Sixteen out of 23 studies reported ocular salvage between 60 and 80%. Eyelid oedema and erythema were the most commonly reported ocular complications following IAC. The most common systemic complications included nausea, vomiting, and neutropenia. Metastases and deaths were reported in 6 out of 23 studies. Three studies reported the development of secondary neoplasms. The technical success rate of IAC procedure ranged from 91% to 100%. Discussion. The studies have shown that IAC is a safe and effective treatment for advanced retinoblastoma, especially group D. It allows to save the globe without compromising patients’ survival. Local and systemic complications are acceptable. The role of IAC in less advanced tumours is yet to be established. Future work should focus on conducting larger prospective studies with longer follow-up. Multiple novel therapies for the management of retinoblastoma are currently being tested, including angiogenic inhibitors and targeted agents. The results seem to be promising. Future advances require a further in-depth understanding of unique genetics of retinoblastoma and complex interactions between tumour cells and their microenvironment.

Sign in / Sign up

Export Citation Format

Share Document