Publications by authors named "Roman A Kotelevskyi"

2 Publications

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Wiad Lek 2021 ;74(2):371-374


In this article there is a clinical case of occlusion trauma of implant-supported metal-ceramic crown for prosthetics of central incisor. Its uniqueness is the possibility to save dental implant after acute occlusion impact, which was strong enough to break ceramic facing of fixed denture, but not able to destroy bone and implant components. The occlusion force located at the incisal edge of the crown induced a reverse torque to the implant and did not result in its failure or bone resorption. In a year after repeated fixed prosthetics, the results of clinical examination proved absence of any problem with osseointegration. Literature analysis lets us to suggest, that the phenomenon was caused by protective action of cortical bone around of dental implant. Besides, in the case of natural tooth, the bone is suddenly compressed against the conical root; it transfers occlusal breaking to the supporting periodontal ligament. A dental implant has no periodontal ligament but can have a rough surface that may preclude implant failure.
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April 2021

The effect of endodontics and crown restoration techniques on the prognosis of treatment non-vital teeth.

Wiad Lek 2018;71(9):1738-1741

State Institution "Dnipropetrovsk Medical Academy Of The Ministry Of Health Of Ukraine", Dnipro, Ukraine.

Objective: Introduction: It is generally accepted that the prognosis of endodontic treatment positively correlates with the technical quality of root filling. This seems logical in the sense that the root filling is intended to create a bacterial tight seal on the root canal, so oral bacteria cannot reach the periapical tissues and cause disease. The materials that are available to seal the root canal system are not flawed, and a number of studies using different methods have suggested that even seeming adequate root fillers may not be effective over time. The aim of the study was to evaluate the possible relationship between the quality of restorative crown of the tooth, obturation of the root canal and the periapical status of the teeth that were subjected to endodontic treatment.

Patients And Methods: Materials and methods: A series of X-ray images of randomly selected outpatient cards from patients in the dental department of the Dnipropetrovsk State Medical Academy clinic were investigated. A total of 1001 teeth that were subjected to endodontic treatment, restored by permanent restoration, were evaluated independently by two experts. According to the predetermined set of radiological criteria, the quality of filling the root canals of the tooth was assessed as good (GE), or poor (PE). In turn, the quality of thetooth crown restoration was also evaluated and recognized as good (GR) or poor (PR). Subsequently, the roots of the teeth and surrounding tissues were investigated, and according to existing or present abnormalities, the outcome of treatment was determined to be either successful or unsuccessful.

Results: Results: The successful outcome of endodontic treatment among all the teeth tested was found at 66.4& (n = 1001). The positive result of treatment of teeth with root posts reached 72.7& (n = 527), the success of treatment of teeth without pins was 64.6& (n = 472). The effectiveness of dental treatment, where the technically satisfactory endodontics was found to be the highest. Thus, in combination with technically satisfactory restorations, the success rate reached 82& (GE + GR), and when the restoration was technically unsatisfactory, positive results of treatment were observed in 72& of cases (GE + PR). At the same time, in those groups where endodontics was considered technically unsatisfactory, the positive result of treatment was observed significantly less often, in combination with unsatisfactory restoration, only 55& (PE + GR). If restorations were satisfactory, then somewhat more often, in 57& of the examined teeth (PE + PR).

Conclusion: Conclusions: Thus, according to the results of the X-ray assessment of non-vital teeth, it became clear that in order to achieve a positive result, technically qualitative endodontics is more important, with the same characteristic of restoration of the crown of the tooth.
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June 2019