Biomedical subjects

Ildikó Tarján

Publications and source records attributed to Ildikó Tarján.

10 recordsLinked to original sources

PubMed2006

Prevalence of hypodontia and hyperdontia in paedodontic and orthodontic patients in Budapest.

Various publications have reported the prevalence of accessory teeth to be between 1 and 3%. In contrast, hypodontia has a much higher prevalence. In the current work, the authors studied OP radiographs on 2,219 patients aged 6 to 18 years who presented at the Department of Paedodontics and Orthodontics at Semmelweis University in Budapest (patients with systemic disease were excluded). The examined radiographs revealed a prevalence of accessory teeth of 1.53%. The sequence of prevalence was as follows: mesiodens > second incisor > first incisor. 77.5% of the accessory teeth were located in the upper jaw, with 97.5% of those being present in the incisor region. Hypodontia was detected in 326 patients (14.69%); missing wisdom germs were not considered. The sequence of prevalence of missing germ was as follows: upper second incisor > lower second premolar > upper second premolar > lower first incisor. Hypodontia in the molar region was observed in 15 cases (0.68%). The prevalence of oligodontia was 1.04%.

Adolescent↗

PubMed2005

Endotoxin can decrease isolated rat parotid acinar cell amylase secretion in a nitric oxide-independent manner.

Salivary mucus and amylase have an anti-bacterial nature. Bacterial endotoxin is considered to decrease mucus secreting cell activity by nitric oxide-dependent mechanisms. In this study, the actions of endotoxin on amylase secreting cell activity have been studied. Endotoxin (Escherichia coli lipopolysaccharide; 3 mg/kg, i.v., 5 h) evoked nitric oxide synthase 2 (NOS2) induction in the rat whole parotid tissue (assessed by Western blot and the citrulline assay) and in rat isolated parotid acinar cells (assessed by Western blot and immunohistochemistry), and reduced basal and acetylcholine-stimulated amylase secretion from these isolated cells. However, N(G)-nitro-L-arginine methyl ester (0.1 mg/ml, 4 days in drinking water, yielding a dose of 25 mg/kg/day) did not affect amylase release under basal or acetylcholine-stimulated conditions, either in control acinar cells or those from endotoxin challenged rats. Thus, basal, acetylcholine-evoked or endotoxin-decreased cellular amylase secretion from rat isolated parotid acinar cells does not appear to be modulated by endogenous nitric oxide.

Acetylcholine↗

PubMed2005

Cleidocranial dysplasia: diagnostic criteria and combined treatment.

Cleidocranial dysplasia (CCD) is an uncommon, generalized skeletal disorder characterized by delayed ossification of the skull, aplastic or hypoplastic clavicles, and serious, complex dental abnormalities. There are many difficulties in the early diagnosis of CCD because a majority of the craniofacial abnormalities becomes obvious only during adolescence. In the present case, a hypoplastic midface, a relative prognathia of the mandible, and close approximation of the shoulders in the anterior plane were the conspicuous extraoral findings. Prolonged exfoliation of the primary dentition, unerupted supernumerary teeth, and the irregularly and partially erupted secondary dentition produced occlusional anomalies. The presence of the second permanent molars together with the primary dentition and wide spacing in the lower incisor area were typical dental signs. Gradual extraction of the supernumerary teeth and over-retained primary teeth was the first step of oral surgery. This was followed by a surgical exposure of the unerupted teeth by thinning of the cortical bone. Orthodontic treatment was aimed at parallel growth of the jaws. Removable appliances were used to expand the narrow maxillary and mandibular arches, and a Delaire mask compensated for the lack of sagittal growth of the upper jaw. Temporary functional rehabilitation was solved by partial denture. When the jaws have been fully developed, implant insertions and bridges are the therapeutic measures. The reported case and the literature data support the importance of the early diagnosis and interdisciplinary treatment of CCD.

Adolescent↗

PubMed2005

Tuberculate and odontoma type supernumerary teeth.

An 8-and-a-half-year-old girl with supernumerary teeth of tuberculate and odontoma type is described. Treatment of the patient is carried out on conventional lines with a combination of surgical and orthodontic methods. The upper tuberculate type supernumerary teeth were extracted and, after surgical exposure, the upper permanent first incisors were aligned with removable appliances. After secondary dentition was completed, the lower odontoma type supernumerary tooth was removed surgically, and also the maxillary and mandibular first premolars were extracted because of severe crowding, and fixed orthodontic appliances were used to align the permanent dentition. Early diagnosis and treatment of this anomaly is necessary to avoid more serious consequences and to prevent severe orthodontic disturbances.

Bicuspid↗

PubMed2004

[Literature survey of apexification in connection with three cases].

Endodontic treatment of three non-vital immature teeth is discussed. According Moorrees et al. root formation was in the stage two, six and four respectively. After access to the root canal, removing necrotic pulp and effective chemo-mechanical cleansing, Ca(OH)2 paste was used as a temporary filling material in each case. In two cases after closing the apical opening, permanent obturation was performed with half heated gutta-percha and lateral condensation to obtain a good seal. In one case permanent filling of the canal occurred with gutta-percha and AH26 as a sealer. In the first case two years, in the second case five years after obturation of the root canal with gutta-percha, periapical healing was evident in the control radiograph. In the third case using gutta-percha with AH26 as a sealer after two years new periapical lesion has developed. On the bases of literature data and our experiences in the case of non-vital immature teeth. Ca(OH)2 paste is the best temporary filling material to induce apexification process, and the half heated gutta-percha obturation is the most suitable permanent root filling material.

Calcium Hydroxide↗

PubMed2003

[Prevalence of impacted permanent upper canine and its treatment in 11-18-year-old orthodontic patients].

Data of literature show very high prevalence of impacted upper permanent canine. The aim of the present study was to evaluate prevalence of retentioned or impacted upper permanent canines and to present their therapy. Data on 11-18-year-old children presented for treatment at the Department of Dentistry for Children and Orthodontics in Budapest over a period of 10 years (between 1990 and 2000) were analysed. OP X-ray films of 1858 children and adolescents--1102 female and 756 male--were examined and the data of anamnesis and the administered therapy were considered. Results revealed 101 cases of impacted cuspids, the male:female ratio was 46:55. Considering the totality of administered treatment methods, both surgical exposure and orthodontic treatment of the affected canines were needed in a high rate, i.e. 96.92% of the analysed cases. In 40.91% of the cases extraction of the correspondent upper first premolar was needed. Following the premolar extraction spontaneous occlusions of the impacted canine was established in 3.03%. Authors present the complex therapy of one case of palatally impacted upper permanent canine.

Adolescent↗

PubMed2003

[Retention of Ultra Seal XT third generation fissure sealant in systematic pedodontic care].

The aim of the present study was to clinically evaluate Ultra Seal XT third generation light cured fissure sealant on the occlusal pits and fissures of permanent first and second molars for a period of two years. The examined population consisted of 112 Hungarian school-children, aged 8 to 14 years who presented for treatment at the Department of Dentistry for Children and Orthodontics in Budapest. The 1120 participants had a total of 247 permanent molars sealed. All teeth were monitorized and controlled after 6 months, 1 year and 2 years. Retentivity of fissure sealants were after 6 months 92.7%, one year 87.8%, two years 79.9%. These results are in accordance with data of literature. This longitudinal study showed that modern pit and fissure sealants can be applied during childhood in systematic pedodontic care. It has high retentivity and a directly proportional optimal caries-preventive effect.

Adolescent↗

PubMed2003

[Prevalence of talon cusp in patients aged 7-18].

Talon cusp is an uncommon malformation. The aetiology is unknown although it is thought to be the combination of genetic and environmental factors. The purpose of the study was to examine the prevalence of talon cusps in children aged 7-18. 600 model casts were examined in the Pedodontic and Orthodontic Department of the Semmelweis University. Classification of talon cusps used was based on the degree of formation and extension by Hattab et al [6]. 12 talon cusps were found in the group of type 1, two were found in group of type 2 and one in type 3. The prevalence of talon cusps was 2.5%, mostly on the upper permanent lateral incisors. In four cases it was bilateral. The prevalence of talon cusps was more frequent in males compared to females. The early recognition of the anomaly is important from the therapeutic point of view (placement of sealant, periodic reduction of the cusp).

Adolescent↗

PubMed2002

[Significance of bad habits in orthodontics].

The author is concerned with the etiological role of bad habits in the development. Disturbances caused by pacifier habits, finger sucking, various forms of swallowing habits and their therapeutical possibilities are discussed. The role of mouth breathing, nail biting, bruxism and self-mutilation in development of anomalies and their therapy are also mentioned. The attention is called to the fact that dentists have responsibility and task to diagnose as early as can be the oral bad habits and that the adequate therapy in time in co-operation with other specialists helping the child get out of bad habits, preventing the development of severe anomaly.

Bruxism↗

PubMed2002

[Prevalence of Carabelli's cusp in children 7-18 years old].

The purpose of the study was to examine the prevalence of the Carabelli's cusp in children aged 7-18. 326 dental plaster casts of children undergoing orthodontic treatment in our department were examined. The incidence and degree of expression were investigated in the first upper permanent molars and scored according to Dahlberg's eight grade scale classification. Dental morphological characteristics provide information on phylogenic and genetic studies and understanding variations within and among species. Our results showed that the total incidence of the cusp was 65.34%.

Adolescent↗