Youri Constantinov Anastassov

Prof. Dr. Youri Constantinov Anastassov


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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30 June 2024 in Proceedings of the Bulgarian Academy of Sciences
Verified
Journal Article
Open access
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YAYouri Constantinov Anastassov
Youri Constantinov Anastassov
IGIvan Ginev
Ivan Ginev
RVRadost Velikova
Radost Velikova
YMYordanka Markova
Yordanka Markova
MIMariyana Ivanova
Mariyana Ivanova
PRPeter Radev
Peter Radev
Changes in outcomes during growth and subsequent treatment require not only a multidisciplinary approach but also a system enabling the follow-up of the patients. We present our ten years of experience with an innovative web-based platform that follows around 1500 patients born with facial anomalies on a national level. The degree of the full follow-up can be measured by the number of patients that drop out and the number of patients that have global assessment scores at a fixed period of age. At our actual level of integration of the filters, reminders, and statistics the level of coverage of the outcomes is between 18 to 39% based on the global assessment scores in different periods of age. Even if we had organized several pieces of training for parents in the last three years it is evident that we should improve in future the clarity of our messages in leaflets, training, and websites.

17 June 2026 in Dentistry Journal
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Journal Article
Open access
PDF file
Ivan GinevIvan Ginev
Ivan Ginev
YAYouri Constantinov Anastassov
Youri Constantinov Anastassov
Kostadin GigovKostadin Gigov
Kostadin Gigov
PKPetra Kavradjieva
Petra Kavradjieva
Background: Cleft lip with or without cleft palate (CL ± P) is a common congenital anomaly requiring a multidisciplinary team approach from birth into adulthood. Many patients undergo multiple secondary procedures on the lip, nose, and alveolus, representing a substantial long-term “burden of care” for families and health systems. The relationship between preoperative cleft severity and the cumulative number of surgical interventions into late adolescence remains insufficiently characterized. Methods: A retrospective cohort study was conducted on 166 patients with cleft lip ± cleft palate treated at a single tertiary cleft center. All patients underwent primary cheiloplasty, with or without concomitant gingivoperiosteoplasty (GPP), and had follow-up extending to a mean age of 18 years. Preoperative nasolabial deformity was graded into four categories (mild, moderate, severe, and very severe) using standardized photographic assessment. The primary outcome was the total number of cleft-related surgical interventions on the lip, nose, and alveolus, including the primary operation and all subsequent corrective procedures. Associations between preoperative severity and surgery counts were analyzed using the Kruskal–Wallis test and Bonferroni-adjusted pairwise comparisons. Results: All 166 patients underwent a primary procedure, either cheiloplasty alone (n = 86; 51.8%) or cheiloplasty combined with GPP (n = 80; 48.2%). A second surgical intervention was performed in 111 patients (66.8%), yielding 138 procedures, most commonly GPP with bone grafting (n = 54), corrective cheiloplasty (n = 48), GPP without graft (n = 23), and rhinoplasty (n = 12). A third intervention was performed in 48 patients (28.9%; 70 procedures), predominantly rhinoplasty and additional cheiloplasties, and a fourth intervention in 13 patients (7.8%; 17 procedures), mostly staged rhinoplasty and lip revisions. Overall, 56 patients (33.7%) had only one (primary) operation, 50 (30.1%) had two, 27 (16.3%) had three, 18 (10.8%) had four, 13 (7.8%) had five, and one patient (0.6%) had six surgical interventions. The total number of operations differed significantly across severity grades (Kruskal–Wallis p < 0.001). Patients with mild and moderate severity had significantly fewer surgeries than those with severe or very severe deformities (all p ≤ 0.023), whereas differences between mild vs. moderate and severe vs. very severe were not significant. Conclusions: In this cohort of patients with cleft lip followed to a mean age of 18 years, two-thirds required at least one secondary procedure, and nearly one-fifth underwent four or more surgeries. Higher preoperative severity was strongly associated with greater surgical burden, particularly when comparing mild or moderate deformities to severe and very severe clefts. These findings underline the importance of preoperative severity assessment for family counseling, expectation management, and the design of treatment protocols aimed at minimizing the long-term burden of care while preserving functional and esthetic outcomes.