dimiter kirov - Academia.edu (original) (raw)
Papers by dimiter kirov
Journal of IMAB - Annual Proceeding (Scientific Papers), 2022
Aim of the study: This study aims to evaluate the possible relationship between the occurrence of... more Aim of the study: This study aims to evaluate the possible relationship between the occurrence of bruxism and perceived stress during the Covid-19 pandemic period. Material and methods: Two questionnaires were administered to one hundred forty-five (145) respondents randomly selected from different age groups and gender. Each patient was screened with and Perceived Stress Scale–10 (PSS-10) containing ten questions. The questionnaire assessed patients about stress related to everyday problems, personal events, and coping methods. The answers were scored using an ordinal five-point scale. In this study, a six-item self-administered questionnaire was used to evaluate self-reported awake and sleep bruxism. Results: In the present study, bruxism was not statistically significantly correlated with self-reported perceived stress based on PSS-10 (rank correlation coefficient was rho (145) = 0.080, p < 0.341). There was no statistically significant difference within the study group betwee...
One objective of a nuclear utility is the capability to predict the peak rod power in reload core... more One objective of a nuclear utility is the capability to predict the peak rod power in reload core design accurately and efficiently. This capability can be utilized in the verification of vendor results and the development of utility reload methodology. The MBS code solves the diffusion equation in x-y geometry by the finite different technique. The MBS code utilizes coarser meshes but reaches the same level of accuracy as a pin-by-pin model. The CASMO code utilizes pin profiles at specified core conditions, which are superimposed on the MBS diffusion theory results for pin power predictions. Placement of the burnable poison rods in the loading pattern are crucial to minimizing peak pin power. Westinghouse utilizes a code called TURTLE, licensed by the US Nuclear Regulatory Commission and proprietary to Westinghouse. The MBS code, with macroscopic cross sections from CASMO, can be run with coarser meshes and macroscopic depletion and still reach the same level of accuracy as a pin-by-pin code such as PDQ-7 or TURTLE. The MBS input preparation is simpler than PDQ-7 or TURTLE-type input preparation.
Background: Successful endodontic treatment re-quires effective biomechanical preparation of the ... more Background: Successful endodontic treatment re-quires effective biomechanical preparation of the root canals and three-dimensional obturation of the root canal system. This can be achieved only by knowing and identifying the variations in the root canal system of the endodontically treated teeth. The Aim: The aim of this article is to present cases of endodontic treatment of maxillary first premolar with three root canals – different types. Material and Methods: Five clinical cases of success-ful endodontic treatment of patients with maxillary first premolar and three root canals are described. Result and Discussion: It is noted that good endodon-tic practice requires good knowledge of dental anatomy and
Journal of IMAB - Annual Proceeding (Scientific Papers), 2014
Background: Successful endodontic treatment requires effective biomechanical preparation of the r... more Background: Successful endodontic treatment requires effective biomechanical preparation of the root canals and three-dimensional obturation of the root canal system. This can be achieved only by knowing and identifying the variations in the root canal system of the endodontically treated teeth. The Aim: The aim of this article is to present cases of endodontic treatment of maxillary first premolar with three root canals-different types. Material and Methods: Five clinical cases of successful endodontic treatment of patients with maxillary first premolar and three root canals are described. Result and Discussion: It is noted that good endodontic practice requires good knowledge of dental anatomy and possible variations, accurate X-ray images, as well as use of magnifying equipment. Conclusion: Knowledge of dental anatomy is fundamental for good endodontic practice.
Journal of IMAB - Annual Proceeding (Scientific Papers), 2014
Background: The ability to self-assess is a critical skill that all health professionals must be ... more Background: The ability to self-assess is a critical skill that all health professionals must be able to do, in order to achieve competence. This is essential for the doctors of dental medicine. During their education and practice they apply different clinical and paraclinical procedures. The aim is to evaluate the students' self-assessment skills during the education of clinic and pre clinic of prosthetic dentistry. Material and methods: After the completion of certain work-preparation for full veneer crown, a questionnaire was provided to each student in preclinical course (n=30) and clinical course (n=30) for self-evaluation. The questionnaire involved: axial reduction, occlusal reduction, facial and lingual reduction, smoothing and finishing. The answers were based on the standard for the university grading scale. Than, the same questionnaire was fulfilled by the assistant professor without seeing students' self-evaluation. Results and Discussion: Results have been reported in percentages. 100% respond rate has been achieved. The students from the preclinical course tend to overestimate their performance (50%). The students from the clinical course tend to submit overall lower grades than the faculty evaluation (25%). Conclusions: The students from clinics have better self-assessment skills. The discrepancy was most pronounced in the junior students. The different evaluations (self-assessment and assistant professor's) help students to improve their understanding of certain principles and improve the teaching effectiveness of education of prosthetic dentistry.
Journal of IMAB - Annual Proceeding (Scientific Papers), 2014
Background: The ability to self-assess is a critical skill that all health professionals must be ... more Background: The ability to self-assess is a critical skill that all health professionals must be able to do, in order to achieve competence. This is essential for the doctors of dental medicine. During their education and practice they apply different clinical and paraclinical procedures. The aim is to evaluate the students' self-assessment skills during the education of clinic and pre clinic of prosthetic dentistry. Material and methods: After the completion of certain work-preparation for full veneer crown, a questionnaire was provided to each student in preclinical course (n=30) and clinical course (n=30) for self-evaluation. The questionnaire involved: axial reduction, occlusal reduction, facial and lingual reduction, smoothing and finishing. The answers were based on the standard for the university grading scale. Than, the same questionnaire was fulfilled by the assistant professor without seeing students' self-evaluation. Results and Discussion: Results have been reported in percentages. 100% respond rate has been achieved. The students from the preclinical course tend to overestimate their performance (50%). The students from the clinical course tend to submit overall lower grades than the faculty evaluation (25%). Conclusions: The students from clinics have better self-assessment skills. The discrepancy was most pronounced in the junior students. The different evaluations (self-assessment and assistant professor's) help students to improve their understanding of certain principles and improve the teaching effectiveness of education of prosthetic dentistry.
Journal of IMAB - Annual Proceeding (Scientific Papers), 2022
Aim of the study: This study aims to evaluate the possible relationship between the occurrence of... more Aim of the study: This study aims to evaluate the possible relationship between the occurrence of bruxism and perceived stress during the Covid-19 pandemic period. Material and methods: Two questionnaires were administered to one hundred forty-five (145) respondents randomly selected from different age groups and gender. Each patient was screened with and Perceived Stress Scale–10 (PSS-10) containing ten questions. The questionnaire assessed patients about stress related to everyday problems, personal events, and coping methods. The answers were scored using an ordinal five-point scale. In this study, a six-item self-administered questionnaire was used to evaluate self-reported awake and sleep bruxism. Results: In the present study, bruxism was not statistically significantly correlated with self-reported perceived stress based on PSS-10 (rank correlation coefficient was rho (145) = 0.080, p < 0.341). There was no statistically significant difference within the study group betwee...
One objective of a nuclear utility is the capability to predict the peak rod power in reload core... more One objective of a nuclear utility is the capability to predict the peak rod power in reload core design accurately and efficiently. This capability can be utilized in the verification of vendor results and the development of utility reload methodology. The MBS code solves the diffusion equation in x-y geometry by the finite different technique. The MBS code utilizes coarser meshes but reaches the same level of accuracy as a pin-by-pin model. The CASMO code utilizes pin profiles at specified core conditions, which are superimposed on the MBS diffusion theory results for pin power predictions. Placement of the burnable poison rods in the loading pattern are crucial to minimizing peak pin power. Westinghouse utilizes a code called TURTLE, licensed by the US Nuclear Regulatory Commission and proprietary to Westinghouse. The MBS code, with macroscopic cross sections from CASMO, can be run with coarser meshes and macroscopic depletion and still reach the same level of accuracy as a pin-by-pin code such as PDQ-7 or TURTLE. The MBS input preparation is simpler than PDQ-7 or TURTLE-type input preparation.
Background: Successful endodontic treatment re-quires effective biomechanical preparation of the ... more Background: Successful endodontic treatment re-quires effective biomechanical preparation of the root canals and three-dimensional obturation of the root canal system. This can be achieved only by knowing and identifying the variations in the root canal system of the endodontically treated teeth. The Aim: The aim of this article is to present cases of endodontic treatment of maxillary first premolar with three root canals – different types. Material and Methods: Five clinical cases of success-ful endodontic treatment of patients with maxillary first premolar and three root canals are described. Result and Discussion: It is noted that good endodon-tic practice requires good knowledge of dental anatomy and
Journal of IMAB - Annual Proceeding (Scientific Papers), 2014
Background: Successful endodontic treatment requires effective biomechanical preparation of the r... more Background: Successful endodontic treatment requires effective biomechanical preparation of the root canals and three-dimensional obturation of the root canal system. This can be achieved only by knowing and identifying the variations in the root canal system of the endodontically treated teeth. The Aim: The aim of this article is to present cases of endodontic treatment of maxillary first premolar with three root canals-different types. Material and Methods: Five clinical cases of successful endodontic treatment of patients with maxillary first premolar and three root canals are described. Result and Discussion: It is noted that good endodontic practice requires good knowledge of dental anatomy and possible variations, accurate X-ray images, as well as use of magnifying equipment. Conclusion: Knowledge of dental anatomy is fundamental for good endodontic practice.
Journal of IMAB - Annual Proceeding (Scientific Papers), 2014
Background: The ability to self-assess is a critical skill that all health professionals must be ... more Background: The ability to self-assess is a critical skill that all health professionals must be able to do, in order to achieve competence. This is essential for the doctors of dental medicine. During their education and practice they apply different clinical and paraclinical procedures. The aim is to evaluate the students' self-assessment skills during the education of clinic and pre clinic of prosthetic dentistry. Material and methods: After the completion of certain work-preparation for full veneer crown, a questionnaire was provided to each student in preclinical course (n=30) and clinical course (n=30) for self-evaluation. The questionnaire involved: axial reduction, occlusal reduction, facial and lingual reduction, smoothing and finishing. The answers were based on the standard for the university grading scale. Than, the same questionnaire was fulfilled by the assistant professor without seeing students' self-evaluation. Results and Discussion: Results have been reported in percentages. 100% respond rate has been achieved. The students from the preclinical course tend to overestimate their performance (50%). The students from the clinical course tend to submit overall lower grades than the faculty evaluation (25%). Conclusions: The students from clinics have better self-assessment skills. The discrepancy was most pronounced in the junior students. The different evaluations (self-assessment and assistant professor's) help students to improve their understanding of certain principles and improve the teaching effectiveness of education of prosthetic dentistry.
Journal of IMAB - Annual Proceeding (Scientific Papers), 2014
Background: The ability to self-assess is a critical skill that all health professionals must be ... more Background: The ability to self-assess is a critical skill that all health professionals must be able to do, in order to achieve competence. This is essential for the doctors of dental medicine. During their education and practice they apply different clinical and paraclinical procedures. The aim is to evaluate the students' self-assessment skills during the education of clinic and pre clinic of prosthetic dentistry. Material and methods: After the completion of certain work-preparation for full veneer crown, a questionnaire was provided to each student in preclinical course (n=30) and clinical course (n=30) for self-evaluation. The questionnaire involved: axial reduction, occlusal reduction, facial and lingual reduction, smoothing and finishing. The answers were based on the standard for the university grading scale. Than, the same questionnaire was fulfilled by the assistant professor without seeing students' self-evaluation. Results and Discussion: Results have been reported in percentages. 100% respond rate has been achieved. The students from the preclinical course tend to overestimate their performance (50%). The students from the clinical course tend to submit overall lower grades than the faculty evaluation (25%). Conclusions: The students from clinics have better self-assessment skills. The discrepancy was most pronounced in the junior students. The different evaluations (self-assessment and assistant professor's) help students to improve their understanding of certain principles and improve the teaching effectiveness of education of prosthetic dentistry.