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Biomedical subjects

J Hidding

Publications and source records attributed to J Hidding.

At least 19 recordsLinked to original sources
PubMed2005

Callusmassage. A new treatment modality for non-unions of the irradiated mandible.

Recent reports on orthopaedic surgery focus on mechanical stimulation of the regenerate during distraction therapy of non-unions in long-bone-surgery. In the field of maxillofacial surgery, callus stimulating techniques are rarely reported. The case of a 65-year-old man with a radiogenic mandibular non-union after ablative tumour therapy and pre-operative radiation therapy presented with a non-union. Vertical distraction in combination with subsequent repeated, stepwise compression and distraction (=massage) had a positive effect on the consolidation of the regenerate.

Aged↗
PubMed2000

[Micro- and macrodistraction of the jaw. A sure method of adding new bone].

Vertical distraction osteogenesis (VDO) has been developed by our study group to move dentulous and edentulous segments of the alveolar process vertically with a device in microplate-design. Besides these techniques of vertical distraction of the atrophic alveolar crest some further modifications as Micro- and Macro-distraction are available. Micro-distraction can be used in localised small defects of the alveolar crest with microplates and screws of 1.0 mm in diameter. In a pilot study we could treat 6 patients especially after traumatic bone loss of the alveolus. The lengths of the segments were 12.6 mm, the vertical distraction rate was 9.2 mm in average. Macro-distraction we call the distraction of the severely resorbed mandible in order to rebuild the vertical dimension of the weakened mandible. Vertical distraction osteogenesis of 13.6 mm was completed successfully in five patients with large segments of 119 mm lengths in average in a sandwich-technique. With a solid 2.3 basic plate a secure stability of the weakened mandible could be achieved. In contrast to bone transplantation an earlier mineralisation in the vertically distracted area could be seen by radiological examination and biopsy. We could insert dental implants in both pilot groups 3 months after distraction procedure. Main advantages of vertical distraction osteogenesis are: 1. No bone harvesting, 2. decreased resorption, 3. lower morbidity compared with conventional techniques, 4. lower infection rate and 5. feasibility to insert dental implants 3 months after distraction procedure, 6. gain of soft tissue.

Adolescent↗
PubMed1999

[Initial outcome of vertical distraction osteogenesis of the atrophic alveolar ridge].

Besides several conventional therapeutic regimens to treat severe forms of alveolar ridge atrophy the distraction osteogenesis is an alternative method. We introduced a new technique for the treatment of alveolar ridge atrophy encouraged by the advantages of distraction osteogenesis in the last decade. A new technique called "vertical distraction osteogenesis (VDO)" has been developed by our study group to move dentolous and edentolous segments of the alveolar process vertically with a device in microplate-design. Vertical distraction osteogenesis was completed successfully in nine patients with segments length ranging from 6.5 mm to 43 mm with an average of 23.7 mm. The vertical distraction rate was 9.9 mm on average in seven mandibular and two maxillar segments. In all cases we found good stability and the predicted movement of the segments. In contrast to bone transplantation an earlier mineralization in the vertically distracted area could be seen by radiological examination and biopsy. Five patients were treated with dental implants 12 weeks after distraction procedure. Main advantages of vertical distraction osteogenesis are: 1. No bone harvesting, 2. decreased resorption tendency, 3. lower morbidity compared with conventional techniques, 4. lower infection rate and 5. feasibility to insert dental implants 12 weeks after distraction procedure, 6. gain of soft tissue.

Adolescent↗
PubMed1999

[Time saving and effective method of temporary intraoperative reposition in mandibular fractures. Realization with the FAMI screw].

Open reduction and rigid fixation with maxillomandibular fixation at least intraoperatively is the method of choice for treatment of mandibular fractures. We report an effective method of internal temporary fixation which significantly facilitates fracture reduction and stabilization. The technique is used in combination with special FAMI screws and a monocortical miniplates system according to Champy, which eliminates in most cases the need for maxillomandibular fixation. Our results in 78 patients with mandibular fractures confirmed the reliability and the efficiency of the internal temporary fixation.

Bone Plates↗
PubMed1992

Surgical versus non-surgical treatment of fractures of the articular process of the mandible.

In a clinical, radiographic and angiographic study, we reinvestigated 34 patients with dislocated fractures of the condylar neck. 20 of them had been treated by open reduction, 14 in a conservative-functional way. The clinical results were nearly equal in both groups. The instrumental registration and the X-ray findings showed considerable deviations in the joint physiology in the conservative group. 19 of 20 patients operated on showed near-anatomical reconstruction with good functional results.

Adolescent↗
PubMed1991

[Diagnostic imaging of the salivary glands in children and adolescents].

In children and adolescents, imaging of the salivary glands is a valuable supplement to clinical examination in various diseases. The choice of the most appropriate radiological technique depends on patient compliance, the necessity of avoiding radiation exposure as far as possible, and the tentative diagnosis made on the basis of the clinical examination. Ultrasonography (US) is the method of choice for the detection of both acute inflammatory disease and masses in the salivary gland and the adjacent tissue. US can also be implemented as a screening method for calculi, though sialography is superior for this purpose. Sialography is the only technique that allows diagnosis and evaluation of the degree of chronic inflammation. Computed tomography and magnetic resonance imaging are required for more deeply located neoplasms of the parotid region.

Adolescent↗
PubMed1991

[General complications in dental local anesthesia].

In a prospective, randomised double blind study we recorded the rate of complications in dental anesthesia in more than 1500 patients using 4 commonly known anesthetic solutions. 228 of our patients (18.3%) noted headaches postoperatively. Furtheron we found syncopes, failures of anesthesia and nausea. Double vision was noticed once intraoperatively (Articain) and postoperatively (Lidocain). We found a high standard of security in dental local anaesthesia.

Adult↗
PubMed1990

A transcoronoidal approach of fractures of the condylar neck.

Open reduction of condylar neck fractures is a contentious issue. The majority of these fractures can be treated conservatively. There are, however, specific situations, where open reduction is indicated. In recognition of the high morbidity associated with extra-oral procedures, we advocate an intra-oral transcoronoidal approach to gain direct access to the fracture site.

Adult↗
PubMed1989

[Bone regeneration after filling of extensive cysts by means of bone collagen type 1].

It could be demonstrated by experimental studies on dogs that demineralized bone and bone products have a good osteogenetic potential which gives them a superior rating over artificial materials as replacement of autogenous bone transplants. The results of a prospective clinical study on 52 patients with 56 large mandibular or maxillary cysts are presented showing that bone collagen matrix type I is a good product for the filling of bone defects. Full reossification of a cyst was reaches as early as 8 months postoperatively in 20 cases. 32 defects had become substantially smaller. These results are discussed and compared to other methods mentioned in the literature.

Bone Regeneration↗
PubMed1989

[Filling cysts with type 1 bone collagen].

The good properties of bovine bone collagen type 1 for filling of bony defects was demonstrated in 56 cysts of the alveolar bone in 52 patients. 49 cysts (approx. 87%) healed without irritation. 8 months postop. complete reossification of the defects had been achieved in 20 (approx. 36%) of the cysts. Further 32 defects (approx. 57%) were markedly reduced. The discussion will compare the advantages of bone collagen and other materials.

Adolescent↗
PubMed1989

[Long-term experiences with large bridge-work after partial resection of the lower jaw].

In a period of 12 years 121 bridging plates were implanted for the reconstruction of madibular defects following radical tumour surgery. 60 (49.6%) of these implants had to be removed prematurely due to: 1. postoperative perforation of the plate through either skin or oral mucosa, 2. implant fracture, 3. infection of the graft bed, 4. postoperative dehiscence and remaining fistula. Inadequate soft tissue coverage of the bridging plate is discussed as the main reason for the above mentioned complications.

Carcinoma, Squamous Cell↗
PubMed1983

Treatment of hypertension with labetalol in neurosurgical practice. Influence of labetalol on cerebral perfusion pressure in dogs without and with intracranial mass lesions.

In neurosurgical patients autoregulation of cerebral perfusion is often lost. Therefore, a sudden increase in blood pressure may lead to an increase in cerebral blood flow and cerebral oedema may follow. The influence of labetalol, a new alpha- and beta-adrenoceptor blocking agent, on intracranial pressure and cerebral perfusion pressure was investigated in dogs without and with mass lesions. During hypotension with labetalol the intracranial pressure remained unchanged and the cerebral perfusion pressure decreased to the same extent as mean arterial pressure (30%). Labetalol seems to be suitable to treat hypertension perioperatively in neurosurgical patients but it is not a suitable drug for induced hypotension.

Animals↗
PubMed1983

Influence of urapidil on intracranial pressure and intracranial compliance in dogs.

During induced hypotension with urapidil, measurements of intracranial pressure and of the ventricular volume-pressure response (intracranial compliance) were obtained in dogs with and without intracranial hypertension. A bolus of urapidil 50 mg plus an infusion of urapidil 8.2 +/- 1.2 mg min-1 decreased mean arterial pressure by 22 +/- 10% from control in group I (without intracranial hypertension) and by 24 +/- 8% in group II (with intracranial hypertension). In both groups there was no change in intracranial pressure or in intracranial compliance after the administration of urapidil.

Animals↗
PubMed1982

The use of labetalol in producing deliberate hypotension and its effects on intracranial pressure in dogs.

The use of effective and safe hypotensive agents in neuroanesthesia is a difficult and unanswered question. Most hypotensive agents produce an increase in intracranial pressure and as a result can not be used until the dura is opened. In experiments in dogs, Labetalol, a combined alpha and beta-adrenoceptor antagonist, showed no increase in intracranial pressure and no change in intracranial compliance by producing hypotension.

Anesthesia↗