Hybrid solution combining osteosynthesis and endoprosthesis for double column acetabular fractures in the elderly provide more stability with finite element model.

Objectives: This study aims to compare mechanical stability of osteosynthesis (plate and screw fixation) alone versus the same method supplemented with hip arthroplasty (hybrid solution) for double column fractures in elderly.

Patients And Methods: Mechanical investigations were performed on an advanced finite element pelvis model developed for double column fractures. The following simulated implant combinations were analyzed: modular acetabular basket with a ring with polyaxial screws and U-plate; plates with polyaxial screws placed on the medial-horizontal (linea terminalis) and quadrilateral bone surfaces; modular acetabular cup with U-plates; and polyaxial screws in sizes optimized based on a finite element model (FEM).

Comparison of different fixation methods of bicolumnar acetabular fractures.

Objectives: This study aims to investigate if the stabilization of iliac wing fractures influences the stability of the acetabular osteosynthesis, if surgical fixation is the choice of treatment, and which technique to be used.

Materials And Methods: In the study, measurements were performed with an improved finite element model. Tension and displacement values were measured in bicolumnar acetabular fractures in the following cases: combination of cranial and medial plate fixation through the linea terminalis, or combination of cranial plate and quadrilateral surface plates.

Severe root resorption of the upper central incisors as a consequence of playing the flute.

This study presents a case of severe root resorption of the maxillary central incisors in an 18-year-old woman who was referred for orthodontic treatment of irregular dental arches. A detailed history revealed that she used to play the block flute on an everyday basis during childhood. Against all warnings, she continued to firmly press her teeth into the mouthpiece of the instrument.

[Surgery on virtual model and 3-dimensional printing of a surgical wafer for the correction of a severe mandibular asymmetry].

Correction of a severe facial asymmetry presents a challenge due to the geometric complexity of the dentition, the bony structures and the soft tissues. In most asymmetric cases two-jaw surgery is recommended. Manual model surgery is an essential part of treatment planning but it can be complicated, time-consuming and may contain potential errors.

Correction of a severe facial asymmetry with computerized planning and with the use of a rapid prototyped surgical template: a case report/technique article.

Management of significant facial asymmetry presents a challenge due to the geometric complexity of the bony and other facial structures. Manual model surgery is an essential part of treatment planning but it can be complicated, time-consuming and may contain potential errors. Computer-aided surgery has revolutionized the correction of maxillofacial deformities.

Orthodontic screws to extrude impacted maxillary canines.

Objective: The impaction of maxillary canines is a frequently encountered clinical problem in orthodontic practice. Patients' refusal to participate in long-term treatment or ankylosis of the impacted tooth result in various treatment difficulties. The aim of this study was to evaluate the possible role of mini-screws in the management of unerupted upper canines.

[Skeletal anchorage: use of miniscrews for impacted maxillary canine management].

Impaction of maxillary canines is a frequently encountered clinical problem. Patients' refusal to a long orthodontic treatment or ankylosis of the impacted tooth results in various treatment difficulties. The aim of this study was to evaluate the possible role of miniscrews in the management of impacted upper canines.

Closure of severe skeletal anterior open bite with zygomatic anchorage.

An open bite is commonly one of the main symptoms of an overall dentofacial deformity. Most anterior open-bite cases are characterized by excessive vertical development of the posterior maxilla. Intrusion of the overerupted molar teeth by traditional orthodontic methods is hardly possible; there is therefore no real alternative to a combined orthodontic and surgical approach.

[Open-bite closure by intruding maxillary molars with skeletal anchorage].

Most anterior open bite cases are characterized by the excessive vertical development of the posterior maxilla. Intrusion of the overerupted molar teeth with traditional orthodontic methods is hardly possible; therefore, there is no real alternative to a combined orthodontic and surgical approach. Skeletal anchorage has recently been offered for the orthodontic movement of teeth.

[Direct application of fiber-reinforced composites in splinting in a case of periodontitis. II].

Attachment loss through advanced periodontitis results in tooth mobility, and then loss of teeth. To prevent progression it is needed to eliminate any exciting agent and correct functional disorders in consequence of disease. Regeneration of periodontium is impossible and mastication is difficult because of tooth mobility.

[Prosthetic rehabilitation of cleft palate patients with fixed partial dentures].

Treatment of cleft palate patients demands a well coordinated work of medical and dental specialists. In spite of the surgical and orthodontic therapy a prosthetic rehabilitation is often necessary because of missing teeth, maxillary hypoplasia, malocclusion and palatal defects. The prosthetic phase begins immediately after the orthodontic treatment.