Objective: The aim of the present study was the comparison of the known chronological age of the studied subjects by dental age evaluated according to the developmental stages of seven permanent teeth in the lower left dental quadrant and to determine how much the child's dental age differs from its chronological age. Methods: Radiographs of 579 patients (288 boys and 291 girls), aged 3-16 years, from the database of the Radiological Clinic of the Second Medical Faculty of Charles University and the Motol University Hospital in Prague were reviewed. The patients were examined for different indications by cone beam computed tomography (CBCT). The evaluation of the developmental stages of the teeth was performed from generated panoramic images and reconstructed three-dimensional (3D) images. The developmental stages of the teeth were evaluated by Demirjian's method for dental maturity based on seven teeth of the lower left dental quadrant (Demirjian et al. 1973). The evaluated variables were mineralization and development of the dental crown, length of the root, and closure of the apical foramen. Results: The difference between chronological and dental age was -0.16 (standard deviation (SD) 1.68, p-value 0.7) in boys and -0.10 (SD 1.65, p-value 0.27) in girls, on average. These results confirm that the method is accurate. Low SD values express the precision of the evaluation. Conclusion: Use of reconstructed 3D images makes the evaluation of the maturation of teeth more accurate in comparison to the use of generated panoramic images. The development of teeth (with exception of third molars) was complete at the age of 16 in 97.3% of the studied subjects.
- MeSH
- dítě MeSH
- lidé MeSH
- mladiství MeSH
- počítačová tomografie se spirálovým kuželovým svazkem * MeSH
- předškolní dítě MeSH
- rentgendiagnostika panoramatická MeSH
- sběr dat MeSH
- určení zubního věku * MeSH
- zuby * diagnostické zobrazování MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mladiství MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
The author presents a case of solitary bone cyst in a 16-year-old patient. It is an nonepithelial lined fluid-filled or empty lesion of the bone. The pathogenic mechanism is truly unknown. The previous belief in a traumatic etiology has no scientific basis. It seems more likely that the solitary bone cyst represents a disturbance in the remodeling of trabecular bone related to biochemical or hormonal changes during the teen years. The treatment involves certain surgical procedures. The prognosis for a simple bone cyst is generally good.
- MeSH
- cysty čelistí * etiologie chirurgie radiografie MeSH
- diferenciální diagnóza MeSH
- lidé MeSH
- mladiství MeSH
- nemoci mandibuly chirurgie radiografie MeSH
- počítačová tomografie se spirálovým kuželovým svazkem MeSH
- rentgendiagnostika panoramatická MeSH
- stomatochirurgie metody MeSH
- Check Tag
- lidé MeSH
- mladiství MeSH
- mužské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
Autoři se v předkládaném přehledovém sdělení zabývají relativně méně často se vyskytujícími záněty v oblasti očnice, které vznikají na podkladě odontogenní infekce. Shrnují patofyziologii vzniku tohoto onemocnění, jeho klinické projevy, diagnostiku, léčbu i možné komplikace, a to z pohledu stomatologa.
In the present review article the authors deal with relatively less common orbital inflammations caused by an odontogenic infection. The pathogenesis of this disease, its clinical presentation, workup, treatment and possible complications are summarized from the view of dentist and maxillofacial surgeon.
- MeSH
- absces diagnóza etiologie MeSH
- antibakteriální látky terapeutické užití MeSH
- intravenózní podání MeSH
- lidé MeSH
- nemoci orbity diagnóza etiologie MeSH
- orbitocelulitida * diagnóza etiologie terapie MeSH
- periapikální periodontitida komplikace MeSH
- počítačová tomografie se spirálovým kuželovým svazkem metody MeSH
- rentgendiagnostika zubní metody MeSH
- sinusitida etiologie komplikace MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
PURPOSE OF THE STUDY Frozen tibial shaft bone allografts filled with autologouscancellous bone chips were used for anterior column reconstruction in Th12 and L1 fractures. The aim of this retrospective study was to evaluate the five-year results of the treatment on the basis of radiographic findings. MATERIAL AND METHODS Twenty-six patients treated in 2005 and 2006 for isolated Th12 or L1 fractures, with no neurological deficit, were evaluated. In all patients, the spine was stabilised from an isolated anterior approach or through a combined posterior and anterior approach, and angle-stable implants were used. On radiographic examination the loss of correction and lateral compression of the segment involved were measured on standard X-ray views. Data on bone union at graft-bone interfaces were obtained from spiral CT scans. For assessment of the stage of bone healing, a scale of 0-25-50-75-100 % was established, and each patient was evaluated by two independent radiologists. Based on the average results, bone union was defined as non-union, 0-24 %; incomplete union, 25-74 %; complete union, 75-100 %. RESULTS The average loss of correction measured by Beck's method was 0.77 degree. In four patients, the lateral compression angle deteriorated on the average by 1.1 degree (range, 0.7°-1.8°) during the treatment, the proximal graft-bone interface showed complete union in 19 patients (73 %), and the distal interface was completely healed in 20 patients (77 %). Incomplete bone union at the proximal and the distal interface was found in seven (27 %) and six (23 %) patients, respectively. Nonunion was not recorded. No complications occurred. CONCLUSIONS The use of tibial shaft bone allografts filled with autologous cancellous bone chips resulted in stable reconstruction of the anterior column of the thoracolumbar spine which showed a low loss of correction and good bone union
- MeSH
- autologní transplantace MeSH
- fixace fraktur * metody MeSH
- fraktury páteře * chirurgie klasifikace radiografie MeSH
- hojení fraktur * MeSH
- hrudní obratle * chirurgie zranění MeSH
- kostní šrouby využití MeSH
- lidé MeSH
- počítačová tomografie se spirálovým kuželovým svazkem * využití MeSH
- regenerace kostí MeSH
- retrospektivní studie MeSH
- transplantace kostí metody MeSH
- výsledek terapie MeSH
- Check Tag
- lidé MeSH
- MeSH
- dens in dente diagnóza klasifikace terapie MeSH
- dítě MeSH
- financování organizované MeSH
- lidé MeSH
- ortodoncie korekční metody využití MeSH
- počítačová tomografie se spirálovým kuželovým svazkem metody využití MeSH
- zobrazování trojrozměrné MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
