scholarly journals Causes of failures of long-term used double crown denture and new rehabilitation with dental implant and tooth combined denture using remaining teeth and implants

2018 ◽  
Vol 56 (4) ◽  
pp. 384 ◽  
Author(s):  
Jeong-Gyo Seo ◽  
Jin-Hyun Cho
Keyword(s):  
2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shuyi Wu ◽  
Jianmeng Xu ◽  
Leiyan Zou ◽  
Shulu Luo ◽  
Run Yao ◽  
...  

AbstractPeri-implant infection is one of the biggest threats to the success of dental implant. Existing coatings on titanium surfaces exhibit rapid decrease in antibacterial efficacy, which is difficult to promisingly prevent peri-implant infection. Herein, we report an N-halamine polymeric coating on titanium surface that simultaneously has long-lasting renewable antibacterial efficacy with good stability and biocompatibility. Our coating is powerfully biocidal against both main pathogenic bacteria of peri-implant infection and complex bacteria from peri-implantitis patients. More importantly, its antibacterial efficacy can persist for a long term (e.g., 12~16 weeks) in vitro, in animal model, and even in human oral cavity, which generally covers the whole formation process of osseointegrated interface. Furthermore, after consumption, it can regain its antibacterial ability by facile rechlorination, highlighting a valuable concept of renewable antibacterial coating in dental implant. These findings indicate an appealing application prospect for prevention and treatment of peri-implant infection.


2018 ◽  
Vol 18 (6) ◽  
pp. 928-934
Author(s):  
Daniela Koštialiková ◽  
Mariana Janeková ◽  
Andrej Dubec ◽  
Matej Burget ◽  
Františka Pešlová
Keyword(s):  

2008 ◽  
Vol 47-50 ◽  
pp. 1035-1038 ◽  
Author(s):  
Daniel Lin ◽  
Qing Li ◽  
Wei Li ◽  
Michael V. Swain

Currently, titanium dominates the dental implant materials due to its strength and bio-inerrability. The use of titanium implant had demonstrated considerable surgical success. However, researchers are spontaneously pursuing better materials to achieve better osseointegration in the early stage of implantation. Recently, dental implants based on functionally graded material (FGM) were introduced in pursuit for the goal of enhanced bio-compatibility. The concept for FGM dental implant is that the property would vary in certain pattern to match the biomechanical characteristics required at different regions in the oral bone. However, mating properties do not necessarily guarantee better osseointegration and bone remodelling. There is no existing report available on the long-term effect of FGM dental implant on its hosting bone tissues. This paper aims at exploring this critical problem by using computational bone remodelling technique. The magnitude of bone remodelling due to use of FGM implant is identified over a healing period of four years. Comparisons were made between titanium and various FGM designs, the interesting differences were observed and the optimum FGM design was suggested based on the remodelling results.


2016 ◽  
Vol 27 (6) ◽  
pp. 523-527 ◽  
Author(s):  
Ana Cláudia M. Melo ◽  
Ingrid M. Ledra ◽  
Rogéria A. Vieira ◽  
Edivaldo R. Coró ◽  
Ivete Aparecida de M. Sartori

2016 ◽  
Vol 42 (1) ◽  
pp. 12-16
Author(s):  
Alberto Monje ◽  
Raúl González-García ◽  
María Coronada Fernández-Calderón ◽  
Margarita Hierro-Oliva ◽  
María Luisa González-Martín ◽  
...  

The aim of the present study was to report the main topographical and chemical changes of a failing 18-year in function retrieved acid-etching implant in the micro- and nanoscales. A partially edentulous 45 year old rehabilitated with a dental implant at 18 years of age exhibited mobility. After careful examination, a 3.25 × 13-mm press-fit dental implant was retrieved. Scanning electron microscope (SEM) analysis was carried out to study topographical changes of the retrieved implant compared with an unused implant with similar topographical characteristics. Moreover, X-ray photoelectron spectroscopy (XPS) analysis was used to study the surface composition of the retrieved failing implant. Clear changes related to the dual dioxide layer are present as visible in ≥×500 magnification. In addition, it was found that, for the retrieved implant, the surface composition consisted mainly of Ti2p, O1s, C1s, and Al2p. Also, a meaningful decrease of N and C was noticed, whereas the peaks of Ti2p, Al2p, and O1s increased when analyzing deeper (up to ×2000s) in the sample. It was shown that the superficial surface of a retrieved press-fit dual acid-etched implant 18 years after placement is impaired. However, the causes and consequences for these changes cannot be determined.


2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
A. Pacifici ◽  
D. Carbone ◽  
R. Marini ◽  
G. L. Sfasciotti ◽  
L. Pacifici

Purpose. Implant therapy plays an important role in contemporary dentistry with high rates of long-term success. However, in recent years, the incidence of peri-implantitis and implant failures has significantly increased. The peripheral giant cell granuloma (PGCG) rarely occurs in peri-implant tissues and it is clinically comparable to the lesions associated with natural teeth. Therefore, the study of possible diseases associated with dental implants plays an important role in order to be able to diagnose and treat these conditions.Materials and Methods. This report described a 60-year-old Caucasian male who presented a reddish-purple pedunculated mass, of about 2 cm in diameter, associated with a dental implant and the adjacent natural tooth.Results. An excisional biopsy was performed and the dental implant was not removed. Histological examination provided the diagnosis of PGCG. After 19-month follow-up, there were no signs of recurrence of peri-implantitis around the implant.Conclusion. The correct diagnosis and appropriate surgical treatment of peri-implant giant cell granuloma are very important for a proper management of the lesion in order to preserve the implant prosthetic rehabilitation and prevent recurrences.


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