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Biomedical subjects

L Kryst

Publications and source records attributed to L Kryst.

At least 19 recordsLinked to original sources
PubMed2003

Fourier and fractal analysis of maxillary alveolar ridge repair using platelet rich plasma (PRP) and inorganic bovine bone.

This report concerns the regeneration of the maxillary alveolar process in a 17-year-old patient who had lost the upper central incisors together with alveolar bone as a result of a car accident. Three months later, GBR (guided bone regeneration) was started with the use of autogenic platelet rich plasma (PRP) and inorganic bovine bone. The regenerated bone was analysed after 10 months and compared with intact bone using Fourier analysis of radiograms. The radial and spatial distribution of Fourier transforms showed that the original trabecular pattern existing in the intact bone on both sides of the defect was replicated in an evident way in the regenerated bone. Fractal analysis of intact and regenerated bone showed a higher fractal dimension for intact bone in comparison with regenerated bone, confirming a lower complexity of the newly formed trabecular structures. Replication of the original trabecular pattern in regenerated bone allows us to conclude that genetic mechanisms are influencing the organization of the trabecular pattern of regenerated bone tissue, probably under the influence of the growth factors contained in autologous PRP.

Adolescent↗
PubMed1990

[Results of treatment of upper gingiva and palate carcinomas].

From 1981 to 1986 in the Department of Maxillofacial Surgery, Institute of Stomatology, Medical Academy in Warsaw 85 patients were treated for carcinoma of the upper gingiva and palate. The follow-up of the patients after treatment was from 3 to 7 years. The obtained results of the treatment were analysed depending on the degree of differentiation of neoplasms and their biological aggressiveness and the therapeutic method used. It was found that the results of the treatment of upper gingiva carcinoma were not satisfactory. The best results were obtained using surgical treatment followed by radiotherapy. A positive result of the treatment without symptoms of recurrence was achieved in 21 cases (24.7%).

Gingival Neoplasms↗
PubMed1990

[Comparison of the effectiveness of conventional methods of radiological examinations and computed tomography in the diagnosis of lower gingiva tumours].

In 22 patients aged 34 to 87 years treated in the Department of Maxillofacial Surgery, Institute of Stomatology, Medical Academy in Warsaw for malignant tumours of the lower gingiva the usefulness was assessed of the conventional radiological methods and computed tomography for the evaluation of malignant infiltrations. Computed tomography was found to be an auxiliary radiological method determining best the morphology and syntopy of malignant neoplasms of the lower gingiva infiltrating the soft tissues of the oral floor.

Adult↗
PubMed1990

[The effectiveness of selected surgical methods in the treatment of zygomatico-maxillary fractures].

In a period of 3 years, from 1984 to 1986 in the Department of Maxillofacial Surgery, Institute of Stomatology, Medical Academy in Warsaw 442 patients were treated for zygomatico-maxillary fractures, in 101 cases the treatment was conservative, and 341 were treated surgically by various operative methods. The aim of the study was assessment of late effectiveness of the surgical methods used most frequently in zygomatico-maxillary fractures with reposition of skeletal fragments either with one-pronged hook introduced percutaneously or from the side of the lumen of the maxillary sinus. The criterion of effectiveness of both methods was accepted to be functional assessment of the visual system and the stomatognathic system, and the condition of sensory function in the area of innervation by the suborbital nerve. Control examinations were done 2-5 years after operations confirming the both methods were successful in 90% of the treated group. A more detailed analysis of these methods is not possible since the qualification for these operations differentiated essentially both groups of patients.

Follow-Up Studies↗
PubMed1990

[Late results of treatment of maxillary fractures].

In the period of 3 years, from 1984 to 1986 in the Department of Maxillofacial Surgery, Institute of Stomatology, Medical Academy in Warsaw 230 patients were treated for maxillary fractures. Late results of this treatment were assessed in 102 patients coming for control examinations in 1988. In the assessment of the therapeutic results the following features were considered: facial symmetry, proportions of three facial segments, functions of the visual system and stomatognathic system, nasal patency, and sensory disturbances in the area innervated by the infraorbital nerves. On the basis of this late assessment of the results of treatment of these fractures it was found that the definite morphological-functional and aesthetic results were unsatisfactory in cases of Le Fort III and II type maxillary fractures. This points out that the therapeutic methods used as yet are not sufficiently satisfactory and other methods should be evolved.

Evaluation Studies as Topic↗
PubMed1990

[Analysis of surgical-orthopaedic treatment of mandibular fractures in patients treated in the period 1984-1986].

During 3 years 1246 patients were treated for mandibular fractures, 828 of them were treated by conservative-orthopaedic methods while in 418 patients the displaced mandibular fragments were reduced and fixed surgically using various methods. The purpose of the assessment was a group of 319 patients in whom the fragments were reduced and fixed with ossous sutures. A good result of treatment was achieved after this operation in 291 cases (91.2%). In 28 patients (8.8%) postoperative complications developed requiring reoperation.

Follow-Up Studies↗
PubMed1990

[Late results of treatment of mandibular fractures].

In a group of 1246 patients treated in the Department of Maxillofacial Surgery-Institute of Stomatology, Medical Academy in Warsaw, in a period of 3 years (1984-1986) late results of treatment of mandibular fractures were assessed. In the assessment the range of mandible abduction, function of temporomandibular joints, occlusal abnormalities, the sensory function in the area innervated by the mental nerves and the condition of posttraumatic scars changing the morphology and aesthetic appearance of the face were considered. Limitation of mandibular abduction after treatment was found in 39 cases. Functional disturbances of temporomandibular joints developed in 58 cases, and various occlusal complications were found in 130 out of 1246 patients. In 56 patients various sensory loss was noted in the innervation area of the mental nerves. Posttraumatic scars in 89 patients affected in various degree facial morphology and aesthetic appearance.

Cicatrix↗
PubMed1990

[Solcoseryl--dental adherent paste in the treatment of acute radiation-induced inflammation of oral mucosa, gingivae and tongue].

On the basis of a study carried out in three teaching departments of maxillofacial surgery the effect was analysed of Solcoseryl dental adherent paste and Linomag in the treatment of acute radiation-induced stomatitis. Both drugs were effective but Solcoseryl was superior to the other drug since it accelerated healing by about 50% and formed a protecting dressing on the inflamed mucosa.

Actihaemyl↗
PubMed1989

[Not Available].

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Dentistry↗