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M Siessegger

Publications and source records attributed to M Siessegger.

8 recordsLinked to original sources
PubMed2005

[Chemodenervation with botulinumtoxin in masseteric hypertrophy].

BACKGROUND: Masseteric hypertrophy is a unilateral or bilateral enlargement of the masseteric muscle of various aetiologies. The therapeutic options range from solely conservative measures, especially in functionally induced abnormalities, up to surgical ablation of the muscle. The presented study evaluates the application of botulinum toxin serotype A for the treatment of masseteric hypertrophy. PATIENTS AND METHODS: Between June 2000 and August 2004 seven patients with a unilateral and one patient with a bilateral manifestation of the condition were treated by an injection of botulinum toxin. RESULTS: A significant improvement of facial asymmetry caused by chemodenervation and following reduction of the hypertrophic muscle mass could be achieved in all cases. Complications during the injection, side effects, signs of intoxication, and therapy failure were not observed. CONCLUSION: The results of this treatment series show in agreement with the reports in the literature that the application of botulinum toxin can be currently considered as the therapy of choice in masseteric hypertrophy.

Adolescent↗
PubMed2005

[Quality of life of patients with squamous cell carcinoma of the oral cavity].

OBJECTIVE: The aim of this study was to assess the changes in quality of life during and after treatment in patients with cancer of the oral cavity. PATIENTS AND METHODS: In the period between October 1999 and September 2000, 57 patients of the Department of Craniomaxillofacial Surgery, University of Cologne, underwent surgery, radiation therapy or the combination of both for the treatment of cancer of the oral cavity. Before, during and after the therapy their quality of life was measured with two psychometric scales. RESULTS: The average loss of quality of life in the female group was less than in the male group. Younger patients suffered more than older ones did. All patients had a loss of quality of life 3 months after the beginning of the therapy. The biggest decrease was in the group of patients treated with combined therapy, and the lowest loss in the radiated group. During the assessment period of 9 months, there were significant differences between all three groups. The size of the tumor did not show any influence on the reduction of quality of life. Patients with cancer of the tongue or maxilla showed more loss of quality of life than patients with tumors located in other regions of the oral cavity. CONCLUSION: Location of the tumor, age, gender of the patient, and type of therapy influenced the quality of life, while the size of the tumor did not.

Adult↗
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↗
PubMed2001

Use of an image-guided navigation system in dental implant surgery in anatomically complex operation sites.

INTRODUCTION: Recent developments in computer assisted surgery have brought major improvements to maxillofacial surgery. Computer systems for intra-operative navigation have been introduced enabling the surgeon to locate the continually updated position of the instruments and the operation site on the patient's three-dimensional reconstructed image data set displayed on a monitor in the operating room. Complex surgical procedures can be performed according to the preoperative plan based on CT and/or MRI data minimizing surgical risks and optimizing clinical results. Nowadays computer-assisted-surgery has also proved effective in dental implantology. AIM: The objective of this study was to compare the accuracy of conventional and computer-assisted dental implantation planning and surgery. Analyzing our early experiences, we aimed to evaluate the benefit from utilising computer assisted surgery (CAS). PATIENTS: Five patients were treated with the aid of CAS, a total of 18 dental implants being placed. Only difficult operation sites, e.g. following bone augmentation or anatomically malformed jaws were included in this study. METHOD: An infra-red light based navigation system (Vector Vision 2, BrainLAB, Munich, Germany) including a three-dimensional planning approach for maxillofacial surgery was used. Placement of dental implants in the maxilla included direct visualization when drilling the implant socket according to the axis previously planned on radiographs and CT scans. RESULTS: In two cases the conventionally planned implant location had to be changed due to insufficient bone being available. With four implants, it proved possible to insert longer fixtures after the CAS system had evaluated all parameters of the surgical region. In one case a shorter implant was installed due to insufficient bone at the designated location. CONCLUSION: The use of an image-guided navigation system provides a valuable tool in implant dentistry and proved superior to conventional implant surgery especially in difficult anatomical regions.

Alveolar Ridge Augmentation↗
PubMed2001

Image guided surgical navigation for removal of foreign bodies in the head and neck.

INTRODUCTION: The removal of foreign bodies in the head and neck area is often a surgical challenge due to a combination of difficult access and a close anatomical relationship of the foreign body to vital structures. Recent developments in computer-assisted surgery (CAS) have brought major improvements to the operating rooms for maxillofacial surgeons. The purpose of this paper is to report our experience in computer assisted removal of foreign bodies from the head and neck area, based on various clinical cases. PATIENTS: Computer assisted removal of foreign bodies from the head and neck area was performed in 11 patients. Three patients sustained gun shot wounds with remaining projectiles or fragments in the soft tissue. In six cases, objects related to a preceding surgical intervention were removed. Two patients presented with dislocated teeth in the facial or cervical soft tissues after 3rd molar surgery. METHOD: For surgical planning and intra-operative navigation, a computer based image guided surgery system (VectorVision(2), BrainLab) was used. RESULTS: In 10 of 11 cases the foreign bodies could be removed without major complications by a minimal invasive manner. More than 40 % of surgery time could be saved compared to similar interventions operated upon using conventional methods. CONCLUSION: In our opinion, the use of a computer based image guided surgical system is of great benefit when removing foreign bodies from the head and neck area. The minimally invasive access helps to prevent major complications such as injury to vital structures and allows a quicker operation.

Adolescent↗
PubMed2000

[Morphine dose and side effects: a comparison of older and younger patients with tumor pain].

UNLABELLED: BACKGROUND AND GOAL OF STUDY: Older patients are said to be more sensitive to analgesics and to have a higher risk of side effects due to pharmacokinetic changes developing with old age. On account of this many elderly patients with cancer pain are denied adequate analgesic treatment. We compared efficacy and side effects of cancer pain management in different age groups. METHODS: From 1994 to April 1996 577 cancer patients were treated in our pain clinic according to WHO-Guidelines. Efficacy and side effects were evaluated for 508 patients (< 65 years = G1: 323 patients, 65-74 years = G2: 127 patients, > 74 years = G3: 58 patients) with a computerised documentation system. RESULTS: 508 patients were treated on 42,123 days and revisited on 5572 controls. 30 patients were treated longer than 1 year (G1 21 patients, G2 6 patients, G3 3 patients). 143 patients were treated until death. 286 patients were treated on 19,448 days with oral morphine. (G1: 1712 days; G2: 3645 days; G3: 2364 days). Geriatric patients (G3) received significantly higher doses of morphine than younger patients. Adjuvant drugs were given on 81% of treatment days (G1 84%, G2 75%, G3 75%). Incidence and intensity of side effects were not increased in older patients with the exception of urinary disorders. CONCLUSIONS: Geriatric patients with cancer pain can be treated as effectively according to WHO-Guidelines as younger patients. In our study patients in the old age group received significantly higher doses of oral morphine. When analgesic drugs are titrated according to individual needs, side effects are not more frequent or severe than in younger patients.

Administration, Oral↗
PubMed1999

[Mouth guard protection for prevention of athletic injuries to teeth, mouth and jaw].

Sport is well known as a common cause of dental and oral injuries. Sports-related injuries account for 13% to 39% of all trauma cases in this area. The knowledge about prevention of dental and oral injuries among hobby and professional athletes can be regarded as not satisfactory yet. Mouth guards are considered as one of the most effective means for injury prevention. However, no statements or recommendations regarding use of mouth guards in sports have been published in German language literature yet. The following review article describes several types of available mouth guards and discuss their advantages and disadvantages. Guidelines concerning indications and use of mouth guards are presented.

Athletic Injuries↗