Papers by Magdalena Natalia Dina
Romanian Journal of Morphology and Embryology, Jun 7, 2022
Agenesis of permanent maxillary and mandibular canines is very rare; one to all four can be missi... more Agenesis of permanent maxillary and mandibular canines is very rare; one to all four can be missing, isolated or in association with other missing teeth or with dental morphology abnormalities. Such cases can present functional, esthetic, and psychological problems, since the canine's role in functional occlusion and in obtaining an aesthetic smile is crucial. Frequently, the canine's absence from the arch is caused by impaction; its congenital absence is extremely rare in patients with no associated syndrome. The aim of this paper was to present a very rare case of a non-syndromic Romanian adult female patient with a unilateral permanent maxillary missing canine, in association with pegshaped maxillary lateral permanent incisors, which can have a genetic cause, since the same morphological abnormality was present in her father and her younger sister, who also presented a rare situation of bilateral upper transposition between the canines and lateral incisors. The association of a permanent maxillary canine hypodontia with bilateral "peg laterals" and transposition between the maxillary canine and the peg-shaped lateral incisors is also rare as a family character in healthy patients. Future statistical studies are necessary to establish the incidence of permanent maxillary canine agenesis in Romanian population. Also, the article includes a detailed literature review of reported cases of agenesis of permanent maxillary canines.
Romanian Journal of Morphology and Embryology, Jul 28, 2023
Third molars are frequently absent or impacted; their unpredictable prevalence and morphology, wi... more Third molars are frequently absent or impacted; their unpredictable prevalence and morphology, with frequent anatomical variations, is a challenge for the practitioner. The number of roots of the upper third molars vary from one to five, but five roots upper third molars' cases are extremely rare. The case reported here is of a normotrophic male patient, with no significant general medical history, having extracted an impacted maxillary upper molar, with an unusual position and dimensions and five completely separated formed roots, orientated in diverse directions. It highlights the importance of using the correct surgical technique, without excessive pressure, for avoiding the fracture of the maxillary tuberosity, the displacement of the molar into the pterygopalatine fossa or the opening of the maxillary sinus, especially in the absence of good quality imagistic information like cone-beam computed tomography. The case presented in this paper is very rare and highlights the significance of anatomical knowledge, which is mandatory for managing these cases, to avoid trauma, accidents, and complications and to maintain an optimal time of extraction, since such variations occur, and the conventional radiographs do not offer enough data to clarify the diagnosis.
Romanian Journal of Morphology and Embryology, Jan 14, 2022
Canines are paramount teeth for esthetics and function. Transmigration of the lower permanent can... more Canines are paramount teeth for esthetics and function. Transmigration of the lower permanent canine is a rare process of alteration of the eruption path toward the opposite part of the mandible. The position of the migrating tooth varies at different ages, so early detection of the tendency to cross the midline is crucial; canines that have already passed through the center of the mandible can be impossible to realign. Transmigration can start any time before the normal age of eruption. Comparing two radiographic images taken at different ages offers important diagnosis information. Camilleri & Scerri (2003) described a progressive alteration of the tooth position in four steps, from the normal appearance to a low position inside the corpus of the mandible. Following this classification, this article's aim was to present a case of an impacted lower canine that was diagnosed between the second and third stage of transmigration, around the age of 10, and to detail the combined orthodontic-surgical treatment strategy for "recapturing" and the orthodontic mechanics used to align it. After the examination of cone-beam computed tomography, we have decided to use a lingual arch as a space maintainer and anchorage tool and to surgically expose the tooth. The canine's initial position and the direction of the force of traction used allowed a proper alignment of the tooth inside the dental arch. The periodontal tissues management was important for good healing, stability, and aesthetics. The early detection allowed a proper interdisciplinary orthodontic-surgical management, and a successful outcome.
Romanian Journal of Morphology and Embryology, Jan 12, 2022
Supernumerary teeth are dental units that appear in addition to the regular number of teeth. Thei... more Supernumerary teeth are dental units that appear in addition to the regular number of teeth. Their most frequent location is the anterior maxilla, especially on the maxillary midline, being called mesiodens, but also paramedian or in the position of a lateral incisor. On the other hand, the permanent canine is one of the most stable teeth regarding the number, with very few cases reported about hypo-or hyperdontia. This article reviews the few data found in the literature about the supernumerary permanent maxillary canine and also presents the case of an 8-year-old female patient with a supplemental permanent canine in the upper left maxilla. The patient was non-syndromic and did not present any other supernumerary teeth in the permanent dentition; she had only one in the temporary dentition. Using cone-beam computed tomography (CBCT) of the region, we were able to evaluate the position, structure, and shape of the supplemental canine and also to establish a treatment plan. The aim of this paper was to present this extremely rare case of a non-syndromic Romanian adult female patient with a unilateral supplemental permanent maxillary canine, and to include a literature review of the few reported such cases.
Romanian Journal of Morphology and Embryology
Supernumerary teeth are dental units that appear in addition to the regular number of teeth. Thei... more Supernumerary teeth are dental units that appear in addition to the regular number of teeth. Their most frequent location is the anterior maxilla, especially on the maxillary midline, being called mesiodens, but also paramedian or in the position of a lateral incisor. On the other hand, the permanent canine is one of the most stable teeth regarding the number, with very few cases reported about hypo-or hyperdontia. This article reviews the few data found in the literature about the supernumerary permanent maxillary canine and also presents the case of an 8-year-old female patient with a supplemental permanent canine in the upper left maxilla. The patient was non-syndromic and did not present any other supernumerary teeth in the permanent dentition; she had only one in the temporary dentition. Using cone-beam computed tomography (CBCT) of the region, we were able to evaluate the position, structure, and shape of the supplemental canine and also to establish a treatment plan. The aim of this paper was to present this extremely rare case of a non-syndromic Romanian adult female patient with a unilateral supplemental permanent maxillary canine, and to include a literature review of the few reported such cases.
Applied sciences, May 19, 2022
The aim of this paper is to compare von Mises stress levels and displacements between two possibl... more The aim of this paper is to compare von Mises stress levels and displacements between two possible designs of a class II Kennedy unilateral removable partial denture. Finite element analysis was used to compare two unilateral class II Kennedy removable partial dentures replacing a mandibular second premolar, and first and second molars and with the same design, except a distal implant. The 3D model was created for a mandibular RPD with three artificial teeth and double ball attachment on the abutment teeth and a horizontal ball attachment for the implant, using Autodesk Inventor 2022 software. On the saddle, significant differences appear only when force is applied on the second molar. Association with implant increases von Mises stresses on the acrylic saddle, where displacements values are similar, and decreases von Mises stresses on the muco-osseous support, where displacements values are also similar. Regarding metal reinforcement of the denture, von Mises stress values are greater for forces applied on the second premolar in the implant situation, and smaller for forces applied on the first and second molars. Association with implant decreases von Mises stresses on the metal reinforcement of the denture only if the force is applied distally, on the two molars; in this case, the metal reinforcement is more stressed above the mesial double ball attachment, where displacements values are similar. Regarding the artificial teeth, adding a distal implant does not significantly influence the stress and displacements values, except on the second premolar where the von Mises stresses values are greater, where displacements values are similar. Although an association with an implant increases the risk of fracture for the denture, the results demonstrate that in the posterior area of the edentulous space, the denture exerts less pressure on the mucosa and subjacent bone, protecting the area against resorption.
Romanian Journal of Morphology and Embryology
Canines are paramount teeth for esthetics and function. Transmigration of the lower permanent can... more Canines are paramount teeth for esthetics and function. Transmigration of the lower permanent canine is a rare process of alteration of the eruption path toward the opposite part of the mandible. The position of the migrating tooth varies at different ages, so early detection of the tendency to cross the midline is crucial; canines that have already passed through the center of the mandible can be impossible to realign. Transmigration can start any time before the normal age of eruption. Comparing two radiographic images taken at different ages offers important diagnosis information. Camilleri & Scerri (2003) described a progressive alteration of the tooth position in four steps, from the normal appearance to a low position inside the corpus of the mandible. Following this classification, this article's aim was to present a case of an impacted lower canine that was diagnosed between the second and third stage of transmigration, around the age of 10, and to detail the combined orthodontic-surgical treatment strategy for "recapturing" and the orthodontic mechanics used to align it. After the examination of cone-beam computed tomography, we have decided to use a lingual arch as a space maintainer and anchorage tool and to surgically expose the tooth. The canine's initial position and the direction of the force of traction used allowed a proper alignment of the tooth inside the dental arch. The periodontal tissues management was important for good healing, stability, and aesthetics. The early detection allowed a proper interdisciplinary orthodontic-surgical management, and a successful outcome.
Romanian Journal of Morphology and Embryology
Agenesis of permanent maxillary and mandibular canines is very rare; one to all four can be missi... more Agenesis of permanent maxillary and mandibular canines is very rare; one to all four can be missing, isolated or in association with other missing teeth or with dental morphology abnormalities. Such cases can present functional, esthetic, and psychological problems, since the canine's role in functional occlusion and in obtaining an aesthetic smile is crucial. Frequently, the canine's absence from the arch is caused by impaction; its congenital absence is extremely rare in patients with no associated syndrome. The aim of this paper was to present a very rare case of a non-syndromic Romanian adult female patient with a unilateral permanent maxillary missing canine, in association with pegshaped maxillary lateral permanent incisors, which can have a genetic cause, since the same morphological abnormality was present in her father and her younger sister, who also presented a rare situation of bilateral upper transposition between the canines and lateral incisors. The association of a permanent maxillary canine hypodontia with bilateral "peg laterals" and transposition between the maxillary canine and the peg-shaped lateral incisors is also rare as a family character in healthy patients. Future statistical studies are necessary to establish the incidence of permanent maxillary canine agenesis in Romanian population. Also, the article includes a detailed literature review of reported cases of agenesis of permanent maxillary canines.
Romanian Medical Journal
The Resistance was a reaffirmation of France's independence and individuality, as well as a s... more The Resistance was a reaffirmation of France's independence and individuality, as well as a struggle to regain freedom and, above all, national integrity. In fact, many historians appreciate that the French Resistance could have achieved more if it had been more effectively integrated into Allied plans and strategies. Thus, in this material we tried to present some short biographies of dentists who worked in the French Resistance against the German occupation troops, some of them even paying with their lives for the courage they showed.
Romanian Medical Journal
No other man in history has influenced his era as decisively as Napoleon Bonaparte did. His life ... more No other man in history has influenced his era as decisively as Napoleon Bonaparte did. His life was that of an exceptionally gifted man, who knew how to make the most of all the opportunities offered by history. In this paper, we will approach the problem of dentistry, during the period when France was managed by the exceptional statesman, Napoleon Bonaparte, presenting in the second part of this material, the biographies of some personalities of French dentistry from that period.
Acta Medica Transilvanica, 2021
When talking about dental assistance we actually refer to the prevention, detection and treatment... more When talking about dental assistance we actually refer to the prevention, detection and treatment of diseases of the oral and maxillo-facial region which, in most cases, have as a starting point or interest the dento-maxillary system. In this material, we tried to present a comparative study on the typology and complexity of different stages of dental treatments that can be performed in urban areas, compared to various stages of dental treatments that are performed and / or could be made in rural dental offices from in Romania.
Romanian Journal of Oral Rehabilitation, 2012
The replacement of a single missing molar is a common procedure in implant dentistry, but also a ... more The replacement of a single missing molar is a common procedure in implant dentistry, but also a challenging one. For an edentulous space limited by intact adjacent teeth, the implant solution is the best and should become a standard therapy even in our country. The first permanent mandibular molar is the most frequent extraction-prone tooth and its loss, usually as a result of caries and pulpal symptoms during the mixed dentition stage, can happen almost immediate after its eruption as a result of its early exposure to the oral environment. The aim of this article is to review the prosthetic consequences following early extraction of the first permanent mandibular molar and to highlight the constraints that appear in later implant treatment planning for young patients that for various reasons refuse the orthodontic treatment. Restorative and prosthetic methods for the improvement of these situations are illustrated in three clinical cases.
Acta Medica Transilvanica, 2021
Flexible dentures are an increasingly interesting prosthetic alternative both for dental practiti... more Flexible dentures are an increasingly interesting prosthetic alternative both for dental practitioners (dentists and dental technicians), but also for patients. This type of prosthetic restoration can rehabilitate a wide range of edentulous, but the financial effort that patients have to make is more consistent than in the case of a partial acrylic dentures. In this study, we will try to present some essential aspects in the technology of creating flexible partial dentures.
Romanian Journal of Morphology and Embryology, 2020
Elderly population frequently presents more than one prosthetic restoration realized from differe... more Elderly population frequently presents more than one prosthetic restoration realized from different types of dental alloys which, in time, suffer various alterations in the oral environment. Metallic ions are released in saliva due to its electrolytic qualities, interacting with the contact tissues. Studies regarding cytotoxicity of dental alloys are providing contradictory results. Besides biocompatibility, the microbial factor is also greatly influencing the long-term success of the prosthetic rehabilitation. This study's aim was to assess the response of the gingival tissue to nickel-chromium (Ni-Cr) and copper (Cu)-based dental casting alloys from fixed dentures present in many patients from Romania. Gingival samples were taken from 124 patients wearing fixed dental restorations made from these two types of alloys from injured areas surrounding the abutment teeth; histological specimens were prepared, fixed in 10% neutral buffered formalin, paraffin-embedded and stained with Hematoxylin-Eosin (HE). Histological analysis showed the existence of a chronic inflammatory infiltrate in the gingival chorion, necrosis areas, and vascular congestion. Various morphological alterations appeared, depending on the intensity of the inflammation and the immune response. The surface epithelium suffered a hyperplasic reaction, either limited to acanthosis or involving the whole epithelium, the release of the Cu 2+ and Ni 2+ ions from the dental alloys used in bridges and crowns being responsible for inducing gingival hyperplasia and a chronic inflammation in the areas situated around the abutment teeth. The immunohistochemical study allowed us to observe an increased number of positive cluster of differentiation 3 (CD3) T-lymphocytes in periodontium, proving that the cellular immune response is rapid and intense.
assist. prof. ioana voinescu1, Md, phd student, prof. univ. dumitru ferechide1, Md, phd, assist. ... more assist. prof. ioana voinescu1, Md, phd student, prof. univ. dumitru ferechide1, Md, phd, assist. prof. viorel perieanu1, Md, phd, assist. prof. Maria Glencora costache1, Md, phd, octavian dumitru Zara2, MD, Assist. Prof. Mădălina Violeta Perieanu1, Md, phd, lecturer claudia-camelia burcea1, MD, PhD, Lecturer Mădălina Malița1, Md, phd, assist. prof. irina adriana beuran1, Md, phd, assoc. prof. liliana burlibasa3, phd, lecturer narcis Marcov1, Md, phd, lecturer Gabriela iorgulescu, Md, phd, assist. prof. Magdalena natalia dina1, Md, phd, assoc. prof. Mihai burlibasa1, Md, phd, Lecturer Luminița Oancea1, Md, phd, assoc. prof. ileana ionescu1, Md, phd, lecturer elena-cristina Marcov1, Md, phd 1 “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania 2 “Sf. Ioan” Emergency Clinical Hospital, Bucharest, Romania 3 Faculty of Biology, University of Bucharest, Romania
Materiale Plastice, 2020
The aim of our study was to evaluate the deformation resistance of two palatal plate type connect... more The aim of our study was to evaluate the deformation resistance of two palatal plate type connectors of removable partial dentures and to make a comparison between the reduced palatal plates and the large ones, in terms of bending resistance during function. We tested 10 maxillary class I Kennedy removable partial dentures made for real clinical cases and duplicated their connectors, 5 of each type. A Universal Loading Machine was used to apply a bilateral progressive force to the PM2-M1 area until the samples bended, recording the force value at which the first change occurred. The results were analyzed using the ANOVA method. For the reduced palatal plate group, the minimum bending force value was 1584 N, the maximum bending force value being 2920 N. For the large palatal plate group, the minimum bending force value was 3150 N, the maximum value being 3380 N. Statistical analysis of data using the ANOVA method shows that the results are statistically relevant, with a p value of 0,...
Acta Marisiensis - Seria Medica, 2021
Aim: This cross-sectional study assesses the opinions regarding the abrupt change in dental healt... more Aim: This cross-sectional study assesses the opinions regarding the abrupt change in dental health education of students from the Department of Dentistry, Faculty of Medicine and Pharmacy, Oradea University during the lockdown period. Materials and methods: An on-line survey was distributed, from 30th of April 2020 until the 2nd of May 2020, collecting data about gender, nationality, year of study, sources of information about the virus, measures taken to avoid contamination, rating online teaching versus face-to face teaching, experiencing anxiety about the future of the profession, perceived impact of the COVID-19 pandemic on their life and professional future and possible measures that can be implemented in order to avoid or reduce contamination. Data was analyzed using IBM SPSS and Chi-Square test. Results and discussions: Reopening was associated with anxiety concerning the future of the profession for 44.8% of the respondents; almost half of the students experienced anxiety ca...
Materiale Plastice, 2021
The purpose of this study was to investigate changes of superficial topography and wettability of... more The purpose of this study was to investigate changes of superficial topography and wettability of two injection-type denture base materials following low pressure plasma treatment. Samples of denture base materials (Polyan and Biodentaplast) were fabricate using dedicated technology and were exposed to plasma treatment. Resin surface topography and rugosity were evaluated using SEM and AFM, while wettability was determined through contact angle measurements. Artificial saliva was the testing liquid. Initial contact angles for the two materials are close (Biodentaplast-37.60�, Polyan-36.75�). Plasma treatment halves the values of the contact angle. 30-days measurement reveals a reduced bounce-back effect (Biodentaplast-20.68�, Polyan-20.11�). Surface topography modified differently for the two materials. Rugosity increased significantly for both materials (p[0.05). Surface rugosity values pre- and post-plasma treatment respect the biological threshold of fungal adhesion. Plasma expos...
Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie, 2019
Congenital absence of the teeth, affecting both physiognomy and mastication, can have a great imp... more Congenital absence of the teeth, affecting both physiognomy and mastication, can have a great impact on patients' quality of life. It may appear unilateral or bilateral; frequently, it associates with certain general conditions. Familial hypodontia in clinically healthy patients is rare. Genetic transmission, as a determinant factor in missing teeth, can be autosomal dominant, recessive, or related to the sex chromosomes. In case of congenitally missing permanent teeth, the corresponding deciduous teeth can be still found on the arch at adult age. The aim of this article is to present rare cases of familial non-syndromic unilateral and bilateral hypodontia in Romanian adult siblings, highlighting also a cross gene transmission between aunt and niece and evaluating the treatment options in accordance with patient's age and oral status. It shows that early diagnosis of hypodontia is crucial for the patient's future oral health. The decision to keep the temporary teeth or t...
Romanian Medical Journal, 2021
The First World War was and is considered the most terrible conflagration of all time. Thus, over... more The First World War was and is considered the most terrible conflagration of all time. Thus, over 65,000,000 soldiers made up the corps of land armies, naval and air forces, combat armies that participated in the conduct of military operations during the First World War. About 8,500,000 people died and more than 21,000,000 were injured. France was one of the countries most affected by this war, its medical services, including dentistry and oral and maxillofacial surgery, being completely obsolete. Thus, in this material, we tried to describe some important figures of French oral and maxillofacial dentistry and surgery, which were active in French civil and military hospitals during the First World War (1914-1918).
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Papers by Magdalena Natalia Dina