Dentistry. Medical devices for dentistry. Dental implants

2004 ◽  
2021 ◽  
Vol 67 (3) ◽  
pp. 177-182
Author(s):  
Dragos Epistatu ◽  
◽  
Andreea Ciolacu ◽  
Aikaterina Kitsou ◽  
Ioanina Părlătescu ◽  
...  

Dental extraction is followed by decreases in alveolar volume, vertically and horizontally. This retrospective study measured vertical alveolar resorption after insertion of immediate implants, using OPG, without CBCT or additional radiographs. Patients were randomly split in two groups A (57 implants) and B (47 implants). Measurements were made by two independent observers. The types of implants were: Exacta (Biaggini Medical Devices), Nova, Dentix Millenium and Surcam. The method was based on the size of the implant and another common element of the two radiographs. It used an optimal radiologic exposure. It can be generalized to other studies. Similar results measured in the two groups showed that alveolar remodeling does not depend on the type of the implant. Half of the alveoli did not have any resorption. Another quarter showed barely perceptible clinical resorption (1-2 mm). In the last quarter were registered all the notable resorptions that were associated with various factors (temporary mobile prosthesis, surgical flap, medication and some health problems, smoking, etc.) showing real situations, not ideal conditions. Maximum resorption was unique (7.63 mm).


2021 ◽  
Vol 67 (1) ◽  
pp. 35-39
Author(s):  
Teodora Marcu ◽  
◽  
Augustin Mihai ◽  
Mihai Burlibasa ◽  
Corina Marilena Cristache ◽  
...  

Introduction. In order to achieve the goals of oral implantology, it is of great importance to obtain tissue integration (bone and epithelial) of dental implants. Bone integration has the role of rigidly fixing the dental implant at the level of the supporting bone, while ensuring the transfer of masticatory forces to the neighboring bone, while the soft tissues integration has the role of creating a barrier around these medical devices, with the role of protecting the underlying bone and preventing the access of microorganisms. Purpose. In this material we wanted to perform a statistical analysis on the gingival integration and osseointegration of dental implants in the oral cavity. Material and method. The analysis was performed on a number of 21 patients with a total of 97 dental implants, approximately one year after the prosthetic loading of the implants. The analysis was based on bleeding index, gingival index but also on the depth of the peri-implant canal and bone resorption around the implant. Results and discussions. Most of the implants analyzed showed no signs of inflammation. A small number (less than 30%) showed incipient signs of inflammation, falling within the data in the literature. Conclusions. Early detection of tissue changes around the implant and proper treatment will reduce the risk of more serious injuries and implant failure.


Author(s):  
Antonios Zampelis ◽  
George Tsamasphyros

Biomechanical research has gained recognition in medical sciences. Osseointegrated dental implants, being medical devices functioning under constant load, are one of the focal points of such research. One of the most powerful tools for biomechanical research on dental implants is finite element analysis (FEA). This chapter will cope with basic elements of FEA research, the mechanical properties of bone and the various parts of dental implants, as well as delve into published literature on the subject.


Antibiotics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 919
Author(s):  
Piotr Wychowański ◽  
Anna Starzyńska ◽  
Paulina Adamska ◽  
Monika Słupecka-Ziemilska ◽  
Bartosz Kamil Sobocki ◽  
...  

Dental implants are, nowadays, established surgical devices for the restoration of lost teeth. Considered as an alternative for traditional prosthetic appliances, dental implants surpass them in reliability and patient feedback. Local drug delivery around the implants promotes osseointegration and reduces peri-implantitis. However, there are currently no methods of a multiple, precise topical administration of drugs to the implant area. Engineering coatings on the implants, drug application on carriers during implantation, or gingival pockets do not meet all requirements of dental surgeons. Therefore, there is a need to create porous implants and other medical devices that will allow a multiple drug delivery at a controlled dose and release profile without traumatic treatment. Due to the growing demand for the use of biologically active agents to support dental implant treatment at its various stages (implant placement, long-term use of dental superstructures, treatment of the peri-implant conditions) and due to the proven effectiveness of the topical application of pharmacological biologically active agents to the implant area, the authors would like to present a review and show the methods and devices that can be used by clinicians for local drug administration to facilitate dental implant treatment. Our review concludes that there is a need for research in the field of inventions such as new medical devices or implants with gradient solid–porous structures. These devices, in the future, will enable to perform repeatable, controllable, atraumatic, and repeatable injections of active factors that may affect the improvement of osteointegration and the longer survival of implants, as well as the treatment of peri-implantitis.


Author(s):  
Delma P. Thomas ◽  
Dianne E. Godar

Ultraviolet radiation (UVR) from all three waveband regions of the UV spectrum, UVA (320-400 nm), UVB (290-320 nm), and UVC (200-290 nm), can be emitted by some medical devices and consumer products. Sunlamps can expose the blood to a considerable amount of UVR, particularly UVA and/or UVB. The percent transmission of each waveband through the epidermis to the dermis, which contains blood, increases in the order of increasing wavelength: UVC (10%) < UVB (20%) < UVA (30%). To investigate the effects of UVR on white blood cells, we chose transmission electron microscopy to examine the ultrastructure changes in L5178Y-R murine lymphoma cells.


Author(s):  
B.D. Tall ◽  
K.S. George ◽  
R. T. Gray ◽  
H.N. Williams

Studies of bacterial behavior in many environments have shown that most organisms attach to surfaces, forming communities of microcolonies called biofilms. In contaminated medical devices, biofilms may serve both as reservoirs and as inocula for the initiation of infections. Recently, there has been much concern about the potential of dental units to transmit infections. Because the mechanisms of biofilm formation are ill-defined, we investigated the behavior and formation of a biofilm associated with tubing leading to the water syringe of a dental unit over a period of 1 month.


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