Primary implant stability after maxillary sinus augmentation with autogenous mesenchymal stem cells: a biomechanical evaluation in rabbits.

Objectives: To mechanically evaluate the effect of transplantation of precultured preosteoblasts derived from autogenic adult mesenchymal stem cells (aMSC) for experimental sinus floor augmentation on primary dental implant stability in comparison with conventional augmentation procedures in rabbits.

Material And Methods: After experimental sinus floor augmentation with a synthetic bone substitute, autogenous bone transplantation or osteoblast precursor cells, the primary stability of implants inserted in the edentulous part of the upper jaw of New Zealand White Rabbits was examined. Mechanical evaluation was performed by determination of insertion torque values (Osseocare(™) ), percussion testing (Periotest(™) ), resonance frequency analysis (Osstell(™) and scanning laser Doppler vibrometer) and measurement of extraction forces.

Primary osteoplasty using calvarian bone in patients with cleft lip, alveolus and palate.

Purpose: The results of primary bone grafting in terms of initial cleft width, existence or absence of a lateral incisor and scar formation in the donor area are compared.

Methods: After primary osteoplasty with calvarian bone at an average age of 24 months (4-56 months) radiographic assessment was carried out in 31 patients with 40 alveolar clefts. The bone formation in the grafted area was assessed using dental radiographs taken at 66 months on average (13-114 months) after primary bone grafting.

Conditioning of myocutaneous flaps.

Purpose: The improvement of the ischaemic tolerance of myocutaneous flaps is of clinical importance and hence the subject of numerous investigations.

Methods: In an attempt to increase the ischaemic tolerance, 20 myocutaneous flaps (rectus abdominis muscle) in pigs were elevated and perfused with various, established solutions prior to the onset of ischaemia. The flaps were elevated, utilizing the superior epigastric vessels as the pedicle.

The biosurgical wound debridement: experimental investigation of efficiency and practicability.

The use of maggot therapy is experiencing a revival in the treatment of problem wounds. Although this alternative therapy is ancient, little scientific research has been aimed at standardizing this therapy. The purpose of our investigation was to determine the debridement efficiency of this therapy, i.

Cervical soft tissue imaging using a mobile CBCT scanner with a flat panel detector in comparison with corresponding CT and MRI data sets.

Objective: The aim of this study was to evaluate soft tissue image quality of a mobile cone-beam computed tomography (CBCT) scanner with an integrated flat-panel detector.

Study Design: Eight fresh human cadavers were used in this study. For evaluation of soft tissue visualization, CBCT data sets and corresponding computed tomography (CT) and magnetic resonance imaging (MRI) data sets were acquired.

Avascular mandibular osteonecrosis in association with bisphosphonate therapy: a report on four patients.

Unlabelled: Over the past three years, several reports have been published on jaw osteonecrosis possibly being associated with the administration of bisphosphonates. Bisphosphonates are highly active inhibitors of osteoclasts. These drugs are used for the treatment of multiple myeloma, bone resorption in the case of metastatic malignant diseases, tumor-associated hypercalcaemia, and in the treatment of osteoporosis.

The acute orbit: etiology, diagnosis, and therapy.

Purpose: Extension of dental abscesses to distant areas of the head and neck has been repeatedly reported in the medical literature. Subsequent involvement of the orbit still remains a rarity, resulting in protracted onset of therapy because of inaccurate diagnosis. Considering the possible lasting damage that can result from insufficient therapy, like blindness or even death, the need to extensively educate practicing physicians becomes evident.