Influence of Alveolar Bone Defects on the Stress Distribution in Quad Zygomatic Implant–Supported Maxillary Prosthesis

Duan, Yan; Chandran, Ravi; Cherry, Denise

doi:10.11607/jomi.4692

Cited by 9 publications

(14 citation statements)

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“…7,8 Geleneksel yöntemde zigomatik implant uygulaması, full ark maksiller protezlerde retansiyon sağlamak amacıyla 2 adet zigomatik implantın posterior bölgede, 2-4 dental implantın anterior bölgede uygulanması esasına dayanmaktadır. 9 Ancak, özellikle anterior maksillada dental implant yerleştirmeye elverişli olmayacak düzeyde kemik kaybı olduğu vakalarda posterior bölgede bir kadranda 1 yerine 2 zigomatik implant uygulanarak toplamda dört adet zigomatik implant (Kuad zigoma) ile protez desteği sağlanmaya çalışılır. 10 Dörtlü (Kuad) zigoma implantların klinik uygulamaları ve başarı oranları ile ilgili literatüre sunulmuş olan raporlar kuad zigomatik implantların başarısını destekler niteliktedir.…”

Section: Gġrġġunclassified

“…Her ne kadar literatürde klinik olarak oldukça fazla sayıda vaka rapor edilmiş ve zigomatik implantların başarısı birçok çalışma ile literatüre sunulmuş olsa da, zigomatik implantların biyomekanik başarısına sistematik ve kapsamlı bir şekilde netlik kazandırılamamıştır. 9 SESA 1960'lardan beri kullanılmakta olan ve incelenen dokunun biyomekanik analizinin yapılmasına imkan sağlayan sağlayan kabul edilebilir bir sayısal analiz yöntemidir. 20 İncelenmek istenen doku, SESA'da bir bütün olarak modellenir, modellenen parça ufak birimlere (element) ayrılır.…”

Section: Tartiġmaunclassified

“…Çalışmamızın sonuçları, en yüksek stres değerlerinin tek taraflı defekt olan modelde (Model B) olduğunu ve bunu Model C'nin çok yakın bir stres değeri ile takip ettiğini göstermektedir. Duan ve arkadaşları 9 , yapmış oldukları çalışmanın sonucunda, defekt miktarı arttıkça, dörtlü zigomatik implant uygulanan maksillada, kemikte meydana gelen stresin arttığı bilgisini literatüre sunmuşlardır. Mevcut çalışma sonuçlarımız ise bu anlamda Duan ve arkadaşlarının çalışması ile çelişmektedir.…”

Section: Tartiġmaunclassified

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Dört Farkli Tip Alveoler Defekte Sahip Maksillada Dörtlü Zigomatik İmplant Uygulamasinin Biyomekanik Etkilerinin Değerlendirilmesi

Gümrükçü¹

2020

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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Aim: The purpose of this study was to evaluate the biomechanical effects of quad zygomatic implant use in four different type alveolar defect of maxilla. Materials and Methods: Three dimensional models of human skull, zygomatic implants, bar attachment and hybrid prosthesis was modeled using SolidWorks Computer-Aided Design (CAD) program. Four different defect locations were modeled on intact model to mimic different alveolar defect scenarios. In all models, four zygomatic implants were placed on maxilla models at the location of first premolar and second premolar tooth, assembly of the modeled parts were completed. The data were processed by ANSYS Workbench software, 150N vertical occlusal and 300N masseteric load were simulated on modeled prosthesis. The Maximum Von Mises Stress in bone/implants and deformations were visualized and comparatively evaluated with color distribution scale. Results: Among five models, the Maxium Von Mises Stress, in bone, was found in the unilateral defected (1/3 defected) maxilla. The maximum deformation was found in the 2/3 defected maxilla model. In the asymmetric defect models, higher stress values were obtained in the intact part of maxilla. In the models with symmetric defect, it was found that the stress was distributed more homogeneously. Conclusion: Cortical bone thickness, defect size and localization are among the factors closely related to the stability and success of the implant.

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Section: Gġrġġunclassified

Section: Tartiġmaunclassified

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Dört Farkli Tip Alveoler Defekte Sahip Maksillada Dörtlü Zigomatik İmplant Uygulamasinin Biyomekanik Etkilerinin Değerlendirilmesi

Gümrükçü¹

2020

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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“…In the dental medicine field, the management and rehabilitation of alveolar bone defects has long been viewed as a challange 15 . To overcome alveolar bone defects, dentists must consider bone grafting surgeries for socket preservation to obtain an adequate bone density, volume, quality, and geometry for the implant placement.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome alveolar bone defects, dentists must consider bone grafting surgeries for socket preservation to obtain an adequate bone density, volume, quality, and geometry for the implant placement. This will enable osseointegration of the dental implant 15 .…”

Section: Introductionmentioning

confidence: 99%

Immunohistochemical analysis of stem cells from human exfoliated deciduous teeth seeded in carbonate apatite scaffold for the alveolar bone defect in Wistar rats (Rattus novergicus)

et al. 2020

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Background: Stem cells from human exfoliated deciduous teeth (SHED) seeded in carbonate apatite scaffold (CAS) may have multiple functions that could be used to regenerate the alveolar bone defects. The purpose of this study is to examine the ability of SHED and CAS in alveolar bone defects using an immunohistochemical analysis. Methods: ten three-month-old healthy male Wistar rats (R. novergicus) that weighed between 150–250 grams (g) were used as animal models. A simple blind random sampling method was used to select the sample that was assigned to the study group for CAS and SHED seeded in CAS (n=5). The animal study model of the alveolar bone was established by extracting the anterior mandible teeth. Rodent anesthesia was applied to relieve the pain during the procedure for all test animals. Immunohistochemistry was performed after seven days to facilitate the examination of the receptor activator of NF-κβ ligand (RANKL), osteoprotegrin (OPG), transforming growth factor-β (TGF-β), vascular endothelial growth factor (VEGF), runt-related transcription factor 2 (RUNX2), alkaline phosphatase (ALP), osteocalcin, and osteopontin expression. The data was analyzed using the unpaired t-test (p<0.01) and Pearson’s correlation test (p<0.05). Results: The OPG, RUNX2, TGF-β, VEGF, ALP, osteocalcin, and ostepontin expressions were higher in SHED seeded in CAS than CAS only with a significant difference between the groups (p<0.01). Furthermore, the RANKL expression was lower in SHED seeded in CAS compared to CAS only. There was a strong reverse significant correlation between OPG and RANKL expression (p<0.05). Conclusions: The number of osteogenic marker expressing cells, such as OPG, RUNX2, TGF-β, VEGF, ALP, osteocalcin, and ostepontin, increased. However, RANKL expression in the alveolar bone defects that were implanted with SHED seeded in CAS did not increase after seven days.

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“Decision making with zygomatic and pterygoid dental implants in the severely atrophic maxilla: A narrative review"

2022

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Influence of Alveolar Bone Defects on the Stress Distribution in Quad Zygomatic Implant–Supported Maxillary Prosthesis

Abstract: Additional alveolar bone loss has a negative influence on the stress concentration in the surrounding bone of quad zygomatic implant-supported prostheses. More care should be taken if these additional bone defects are at the sites of anterior zygomatic implants.

Cited by 9 publications

References 0 publications

Dört Farkli Tip Alveoler Defekte Sahip Maksillada Dörtlü Zigomatik İmplant Uygulamasinin Biyomekanik Etkilerinin Değerlendirilmesi

Dört Farkli Tip Alveoler Defekte Sahip Maksillada Dörtlü Zigomatik İmplant Uygulamasinin Biyomekanik Etkilerinin Değerlendirilmesi

Immunohistochemical analysis of stem cells from human exfoliated deciduous teeth seeded in carbonate apatite scaffold for the alveolar bone defect in Wistar rats (Rattus novergicus)

“Decision making with zygomatic and pterygoid dental implants in the severely atrophic maxilla: A narrative review"

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