Vladimir Panov

Vladimir Panov
Medical University of Varna · Department of Conservative Dentistry and Oral Pathology,

Professor

About

89
Publications
58,839
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
325
Citations
Additional affiliations
June 2013 - present
Medical University of Varna
Position
  • Head of Department

Publications

Publications (89)
Article
Full-text available
Quartz-tungsten halogen light curing units (LCUs) have been the main source of light for the polymerization of resin based composites (RBCs) for several decades. Since the beginning of the 20th century, however, their use has been reduced due to the invention and improvement of LED LCUs. Various factors can cause a decrease in the light intensity o...
Article
Full-text available
The aim of this paper is to perform optimization of photopolymerization process of dental composites in order to obtain maximum hardness. Samples (5 mm diameter; 2, 3 and 4 mm thickness) were made of Universal Composite (UC), Bulk fill Composite (BC) and Flowable Composite (FC). Light curing of specimens was performed with 600, 1000 and 1500 mW/cm2...
Article
Full-text available
Dentin hypersensitivity is characterized by short, sharp pain in response to a stimulus – thermal, drying, tactile, osmotic or chemical. These stimuli cause an unpleasant sensation lasting from seconds to minutes after provocation. Many alternative treatment methods have been introduced. One of the options is the use of low-level laser therapy, who...
Article
Full-text available
Burning mouth syndrome is an intraoral burning sensation which develops in the absence of mucosal changes. It is a chronic condition and, in most of the cases, it is idiopathic – no cause or mechanism can be identified and no effective treatment can be prescribed. A variety of therapeutic approaches have been applied – cognitive-behavioral therapy,...
Article
The aim of the present paper is to study the stresses and strains in fillings of V-shaped tooth defects made of universal photo-cured nanohybrid composite (UPC) using incremental technique. Numerical modeling with FEA and microleakage test are performed. Inhomogeneous distribution of the equivalent Von Mises stresses after polymerization of the two...
Conference Paper
Full-text available
The aim of the present paper is to study the microleakage of wedge-shaped defects, filled with restorative materials of different groups. Thirty six human teeth (incisors, canines and premolars) with V-shaped defects, prepared on them, were used. The cavities were obturated with auto-cured resin-modified glass-ionomer cement (RMGIC), flowable photo...
Article
Full-text available
Value added tax (VAT) is calculated on each product, at each level, from manufacturer to retailer. Data show that in Bulgaria this tax for medicines is among the highest in the European Union – 20%. Only in Norway, Ireland, and Denmark the values are higher. A zero rate exists in 10% of EU member states, namely Malta, the United Kingdom, and Sweden...
Article
Full-text available
In recent years, LED light curing units (LCUs) have become the main source of light for the polymerization of resin based composites (RBCs). Various factors can affect the normal functioning of LCUs, one of which is the battery charge of the wireless models. The aim of this study is to evaluate the stability of the light intensity of different bran...
Article
Full-text available
The aim of the present paper is to investigate the deformation-stress state of fillings of V-shaped tooth defects by finite element analysis (FEA). Two different materials are used-auto-cured resin-reinforced glass-ionomer cement (GIC) and flowable photo-cured composite (FPC). Two materials are placed into the cavity in one portion, as before the a...
Article
Full-text available
Dental amalgam has been a basic restorative material in dentistry for over 150 years due to its low cost, universal availability, ease of application. It has protected many patients from pulp complications, extractions and edentulous. It is still used in many countries, especially in dental care under the universal health insurance system. In addit...
Conference Paper
Full-text available
One of the most significant current discussions in dentistry is the great variety of devices used for light curing of dental composites. It is possible to assess the benefits of light polymerization only if we look at them historically. The aim of this study is to examine the devices used for light curing of dental composites, to compare them and t...
Article
Full-text available
Amalgam has been used for the restoration of teeth for more than 200 years, and it is may be the most successful of the direct restorative materials. One of the principal disadvantages of amalgam is that it may have adverse biological effects, both locally and systemically. It can cause an erythematous lesion on the adjacent oral soft tissues local...
Article
Full-text available
ooth restoration is one of the most common procedures in dental practice. The replacement of the whole restoration leads to loss of tooth structure and it’s weakening, there is a risk of pulp injury, it’s time and cost consuming. According to the minimally invasive approach when minimal defects have occurred, or the diagnosed defect is localized on...
Article
Full-text available
Different metal alloys are used for restoration in dental practice. As a result of electrochemical processes, metal objects in the oral cavity become electrically charged and can lead to generation of corrosion potential. This phenomenon can be manifested as pathogalvanism and is characterised by complaints of metallic taste, paraesthesia, tingling...
Article
Full-text available
Different metal alloys are used for restoration in dental practice. As a result of electrochemical processes, metal objects in the oral cavity become electrically charged and can lead to generation of corrosion potential. This phenomenon can be manifested as pathogalvanism and is characterised by complaints of metallic taste, paraesthesia, tingling...
Article
Full-text available
Often patients with gastrointestinal and liver disease present clinically also with tongue coating. The aim of our study was to design a novel tongue coating evaluation scoring system based on digital photography and digital photographic processing. The study included 56 patients with gastrointestinal and liver disease and 71 controls.By the means...
Article
Full-text available
Introduction: In contrast to the well -established caries epidemiology, data on dentin hypersensitivity seems to be contradictory. This study evaluates and assesses the prevalence, distribution and potential changes in case of dentin hypersensitivity. Dentin hypersensitivity is described as a short, sharp pain, arising from exposed dentin in respon...
Article
Full-text available
Investigations ascertain that secretory IgA is characterized with a protective role against tooth decay. People with caries-resistant dentition are with significantly higher levels of salivary IgA compared with car-ies-active people. Normally secreted salivary IgA an-tibodies influence the immunological control of tooth decay. Secretory IgA in sali...
Article
Full-text available
Bad breath is an oral health condition characterized by unpleasant odor from the oral cavity. The origin of halitosis is associated with different oral pathologies, but it may be related to systemic conditions in 15% of the cases. We examined 55 patients with various hepatic and gastrointestinal diseases. With an apparatus to measure bad breath we...
Article
Full-text available
Halitosis is a health condition associated with an unpleasant odor from the oral cavity. The origin of bad breath may be related to systemic and oral conditions, but the large percentage of cases (about 85%) are related to oral factors. Our aim was to investigate the presence and degree of halitosis in healthy patients and to compare it accordance...
Article
Full-text available
Early caries detection is essential for minimal intervention dentistry, since it could give the opportunity to reverse the process and eliminate or at least postpone the surgical treatment. The aim of the present study was to evaluate the effectiveness of near-infrared transillumination in early caries diagnosis for both occlusal and proximal lesio...
Article
Full-text available
Introduction: Diabetes mellitus (DM) is a disorder characterized by high glucose levels and metabolism abnormalities in processing carbohydrates, fats and proteins (2). Diabetes is a lifelong disease. Studies show more oral complications among diabetics compared to non-diabetic individuals matched by age and sex. A crucial factor in examining oral...
Article
Full-text available
Background: Bleaching has gradually became a popular procedure for people searching for aesthetic improvement. The aim of this in vitro study was to investigate the effect of bleaching with 45% carbamide peroxide on the level of mineralization of enamel, using laser fluorescence. Materials and methods: Sixty extracted human teeth were treated with...
Article
Full-text available
The success rate of 327 Straumann Bone Level implants with diameter of 3,3 mm was observed for a period of one to six years. At the control visit the following were registered: absence or presence of exudation, bleeding on probing and marginal bone re-sorption visible on radiography, and survival rate.The survival rate of the implants with reduced...
Article
Full-text available
Introduction The aim of this study is to evaluate sinus floor elevation utilizing the lateral approach and simultaneous or stage implant placement as a reliable treatment of edentulism in the posterior areas of the upper jaw with vertical bone deficit. Material and Methods We considered as indicated for sinus floor elevation utilizing the lateral a...
Research
Full-text available
Department of Conservative Dentistry and Oral Pathology, Faculty of Dental Medicine, Medical University –Varna, Bulgaria
Article
Full-text available
Захарният диабет е хронично протичащо заболяване на обмяната на веществата, породено от абсолютен или относителен дефицит на инсулин. Честотата на захарен диабет в света се изчислява на 2.8% за 2000 година и прогнозата за 2030 година е да засегне до 4.4% от населението на света. Връзката между заболяването и промените в устната кухина при пациенти...
Article
Full-text available
Introduction: The syllabi of many dental subjects include topics about infectious diseases. Students are informed about their symptoms, transmission routes, prevention and treatment. Great attention is paid also on the necessity of full medical history, appropriate disinfection and sterilization protocols and the use of personal protective means....
Article
Full-text available
Objectives: The most common pathologic processes of jaws with inflammatory origin from necrotic dental pulp are periapical lesions. Periradicular granuloma and radicular cyst are the most important lesions, which can be seen in the teeth with necrotic pulp or improper root canal therapy Various clinical methods have been used in attempts to differe...
Article
Full-text available
Apical surgery is considered a standard oral surgical procedure. It is often a last resort to surgically maintain a tooth with a periapical lesion that cannot be managed with conventional endodontic (re-)treatment. The main goal of apical surgery is to prevent bacterial leakage from the root-canal system into the periradicular tissues by preparing...
Article
Full-text available
Background: Providing and maintaining proper oral hygiene is related with the control of initiation and progression of dental caries and periodontal diseases. Objective: To accentuate on the application and effectiveness of standardized motivational program for oral hygiene in children with assessment of OHI-S Green-Vermillion. Methods: The study...
Article
Full-text available
Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than X-rays, that is, in the range between 400 nm and 100 nm. Because of its ability to cause chemical reactions and excite fluorescence in materials, ultraviolet light has a huge number of useful applications in modern medicine, for...
Article
Full-text available
The aim of this study is to describe different root-end filling materials according to the literature and to compare their antibacterial activity, sealing ability, biocompatibility and microleakage. The purpose of a root-end filling is to establish a seal between the root canal space and the periapical tissues. A number of materials have been sugge...
Article
Full-text available
The purpose of the study was to evaluate, by examination of periapical radiographs, whether the application of intra-radicular posts in endodontically treated teeth can lead to the development of periapical lesions. A total of 103 panoramic radiographs from 103 patients (263 endodontically treated teeth) from Faculty of Dental Medicine, University...
Article
Full-text available
Introduction: Dental caries continues to affect a large percentage of children and currently advises that if diagnosed at an early stage can be reversed with minimally invasive treatments. There a large number of methods for early diagnostics. Purpose: The aim of the presented in vitro study was to evaluate the effectiveness of the laser fluorescen...
Article
Full-text available
Literature data relate certain Gram-negative anaerobe microorganisms with advanced destructive periodontal lesion. There are some references which reported higher levels of periodontal pathogens by the red and orange complex in deep periodontal pockets. The aim of this study is to determine the presence of most important periodontal pathogens and C...
Article
Full-text available
This review examines literature data concerning the bacterial findings in chronic periodontitis depending on pocket depth, and presents the latest published information on the presence of proinflammatory factors in periodontal environment. It has been found that chronic periodontitis affects as much as 80% of the middle-aged population; by comparis...
Article
Full-text available
Purpose: The aim of the presented in vitro study was to evaluate the effectiveness of the device DIAGNOcam and the laser fluorescence device DIAGNOdent for early diagnosis of occlusal caries and to compare it with three traditional methods – visual and tactile, dye and radiographic examination. Material and methods: The sample consisted of 60 extra...
Article
Full-text available
Literature data have reported that certain Gram-negative anaerobe bacteria from the subgingival environment are important etiological agents of chronic periodontal disease. Based on published criteria identifying periodontal pathogens, major evidences has been shown for: Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis and Tannerella...
Article
Full-text available
Purpose: The aim of the presented in vitro study was to evaluate the effectiveness of the laser fluorescent device DIAGNOdent in measuring changes in the level of mineralization of intact enamel surfaces etched for different time intervals and intact dentin etched for 30 sec. Material and methods: The study was performed on extracted human teeth....
Article
Full-text available
Aim: The aim of the presented study is to compare the effectiveness of the diagnosis with a dental microscope, laser fluorescence (DIAGNOcam) and X-ray examination in proximal caries diagnosis. Material and methods: Thirty-eight adult patients were examined. They were first examined with a dental mirror and a probe, under magnification 6.4 times. A...
Article
Full-text available
Periodontal diseases are inflammatory and destructive diseases of the dentogingival complex associated with specific periodontal pathogens inhabiting periodontal pockets. Periodontal diseases lead to damage of the periodontal tissues supporting the teeth (bone and connective tissue) and affect the quality of life of the affected individuals: poor a...
Article
Full-text available
Helicobacter pylori is a Gram-negative microorganism and an important factor in the pathogenesis of numerous diseases including gastro-intestinal perturbations (peptic ulcer, gastric carcinoma, gastric mucosa-associated lymphoid tissue lymphoma), metabolic, auto immune, vascular and systemic disorders. The isolation of H. pylori from dental plaque...
Article
Full-text available
Inflammatory bowel diseases (IBD) refer to two chronic diseases which involve the large and small intestines: ulcerative colitis and Crohn's disease. The aim of this review is to focus on main oral signs related to IBD based on three important conditions: 1. Oral signs corresponding to the activity of the disease; 2. Oral manifestation which may pr...
Article
Full-text available
Diabetes mellitus (DM) is a metabolic disease which affects many organs. Often in the oral cavity undergo changes that are associated with diabetes. Many dental practitioners are often not aware of the attendant oral manifestations in diabetic patients, which results in prescription of a non-accurate treatment. The aim of the review is to focus on...
Article
Full-text available
Objective: Calprotectin is a calcium binding heterocomplex protein which appear to have regulatory functions in the inflammatory process. Epithelial cells which expressing calprotectin are more resistant to bacterial invasion . In acute phase inflammatory reactions calprotectin is detectable in elevated levels. The aim of the present study is to d...
Article
Full-text available
Oral halitosis is an unpleasant multifactor oral pathology of health and social implications. Ninety per cent of the patients suffering from halitosis have oral abnormalities. The remaining 10 percent of halitosis sufferers have systemic disorders. The exact mechanism of halitosis occurrence is not clear, and in many patients the etiology is an eni...
Article
Full-text available
Hepatitis C virus (HCV) infection is a serious public health problem. New infections continue to occur, and morbidity and mortality are increasing. The date reported that 3% of infected world population are affected.Morbidity associated with hepatitis C virus infection can involve a variety of extrahepatic conditions including the oral region. Some...
Article
The aim of the study was to describe oral Helicobacter pylori strain from a child by 4 methods. The strain was positive by immunofluorescence, ureA- and cagA positive, vacA s1 m2 genotype and resistant to metronidazole and clarithromycin. In conclusion, virulent and antibiotic resistant H. pylori strains can be present in oral cavity from patients...
Article
Full-text available
Pulp stones most common can be found in the pulp chamber of the teeth. They can also be found in the root canals. Radiograph methods which are used to diagnose them are bitewing and periapical radiographs. Pulp stones can be found both in primary and permanent dentition. They are usually associated with systemic or genetic diseases such as dentine...
Article
Full-text available
Hepatitis B virus is the most important infectious hazard in dental profession. Vectors of HBV infection are not only blood, but also saliva, nasopharyngeal secretions, crevicular fluid.The aim of the study was to evaluate serum and salivary HBV DNA levels in subjects with chronic infection and dynamics of HBV levels during the first 3 months of pe...
Article
Full-text available
Periodontitis is an infectious disease concerning supporting tissues of the teeth. The primary etiological agent for disease development and progression is the subgingival biofilm, but recently it is known that host factors may modify the pathological process or may affect the severity and /or extent. The increasing levels of some specific pathogen...