Daniel Fritz Zweifel

Daniel Fritz Zweifel
Kantonsspital Winterthur | KSW · Department Chirurgie

MD, DMD

About

35
Publications
4,330
Reads
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396
Citations
Additional affiliations
April 2018 - present
Private Practice
Position
  • Specialist in Oral and Maxillofacial Surgery
February 2015 - March 2018
University of Zurich
Position
  • Consusltant
November 2011 - October 2014
Lausanne University Hospital
Position
  • Consultant

Publications

Publications (35)
Article
In order to be able to perform major oral surgery in the upper jaw, sufficient local analgesia is indispensable. While the inferior alveolar nerve is often blocked for dental treatments in the lower jaw, block anesthesia in the upper jaw is less common. This article gives pragmatic advice on how to block the infraorbital nerve. By using this method...
Article
Implant born prosthetic rehabilitation of tumour patients can be difficult to perform. Challenges in treating such patients include disrupted anatomy with limited mouth opening due to previous ablative surgery as well as free-flaps or simple bone grafts, adjuvant therapy such as radiotherapy and, in general, poorer general health. Combining classic...
Article
Mit einem Anteil von 3 bis 6 % zählt das odontogene Myxom zu den drei häufigsten odontogenen Tumoren. Es wird aufgrund der klinischen Symptomatik oder als radiologischer Zufallsbefund entdeckt. Die Behandlung besteht in der Regel aus der Resektion des Tumors. Angesichts der hohen Rezidivrate ist post operationem eine jährliche klinische und radiolo...
Article
This study was performed to report the outcomes of patients with oral squamous cell carcinoma (OSCC) of the tongue over a 10-year period with the aim of testing the hypothesis that the lymph node ratio (LNR) has a significant influence on loco-regional recurrence. The charts of 227 patients with OSCC of the mobile tongue treated at the University H...
Article
Purpose: Dental rehabilitation in patients receiving free flap reconstructive surgery on the mandible or maxilla is an important part of bringing patients back to normality in both a physical and psychological way. It is therefore important to be able to do this in the fastest way possible. Virtual preplanned reconstructions of jaws with implants...
Article
The Surgical reconstruction of defects of the face is challenging. Local and regional flaps have an important part to play, but large defects of bone and soft tissue are a greater problem. Microvascular tissue transfer has become the standard for such patients, and preoperative planning of bony reconstructions is now common. To use these preplannin...
Article
This study was performed to report the usage of sentinel lymph node biopsy (SLNB) in clinical stage I or II tongue cancer patients with cN0 necks seen over a 14-year period. Data were collected prospectively, and a retrospective analysis was performed of 41 patients with early stage oral squamous cell carcinoma of the tongue and a cN0 neck. Sentine...
Article
Full-text available
Radionecrosis is a feared complication after high‐dose radiation therapy (RT) of head and neck squamous cell cancer (HNSCC). The aim of our retrospective study on 37 HNSCC patients was to evaluate the performance of different (18F)fluoro‐deoxy‐D‐glucose (FDG) positron emission tomography (PET) / computed tomography (CT) parameters for distinguishin...
Article
Full-text available
Background: Bone necrosis of the jaw is a serious condition with a broad differential diagnosis of pathologies such as cutaneous histiocytosis, bone metastases or malignant tumours. In addition to the most common cause, medication related osteonecrosis of the jaw (MRONJ), one must consider a number of other causes, such as histiocytosis. Langerhan...
Article
Objective: Fractures of the zygoma and orbit are common facial skeleton injuries. Inadequate reduction and internal fixation may result in functional and aesthetic impairment. The aim of this study was to assess the use of intraoperative 3-dimensional (3-D) cone beam computed tomography (CBCT) for determining the intraoperative revision rate and t...
Article
Full-text available
Purpose: Giant cell granuloma (GCG) of the jaw is a rare disease with high morbidity. Various treatment options have been discussed in the past. Since 2010, a pharmaceutical therapy with denosumab seems to have been successful for giant cell tumors of the femur. The authors hypothesized the equally successful use of denosumab for GCGs of the jaws....
Article
Full-text available
Objectives: Free fibula flap remains the flap of choice for reconstruction of mandibular defects. If free fibula flap is not possible, the subscapular system of flaps is a valid option. In this study, we evaluated the possibility of dental implant placement in patients receiving a scapular free flap for oromandibular reconstruction. Material and...
Article
Full-text available
Early surgical management is often advocated for fractures of the tooth-bearing portion of the mandible. A 6-hour delay has been mentioned for the fixation of these fractures. Our aim was to bring this paradigm into question. All patients referred to our department from September 2012 to May 2014 for fractures of the tooth-bearing portion of the ma...
Article
The development of new technologies such as three-dimensional (3D) planning has changed the everyday practice in maxillofacial surgery. Rapid prototyping associated with the 3D planning has also enabled the creation of patient specific surgical tools, such as cutting guides. As with all new technologies, uses, practicalities, cost effectiveness and...
Article
Purpose Virtual planning and guided surgery with or without prebent or milled plates is becoming more and more common for mandibular reconstruction with fibular free flaps (FFF). While this leads to a wider usage of this excellent surgical option the question of the additional cost of planning and cutting-guide production has to be discussed. In ca...
Article
La planification tridimensionnelle (3D) est un outil de plus en plus utilisé en chirurgie maxillo-faciale. D’abord uniquement virtuelle, la planification 3D mène actuellement à la création d’outils physiques utiles lors de la chirurgie, grâce notamment aux procédés de prototypage rapide en pleine évolution. Nous avons utilisé la planification 3D da...
Article
Full-text available
Objective. This paper describes a patient with left hemifacial pain elicited by the use of a CPAP mask. Case Report. A 74-year-old man was referred with a history of pain in the left maxillary sinus related to the use of his CPAP interface, thereby prohibiting the use of the latter. Computed tomography revealed an intra-sinusal ectopic third molar...
Article
Isolated fractures of the zygomatic arch represent 5% to 14% of all zygomatic complex fractures. Bilateral isolated zygomatic arch fractures, which are defined as fractures of both zygomatic arches without any other facial fracture, are extremely rare. In this case report, we present a rare case of this facial fracture pattern.
Article
Full-text available
Common causes of temporomandibular joint dislocation include extreme opening of the mouth, as may occur with yawning, prolonged dental treatment or intubation, and trauma. This video demonstrates the repositioning of these joints after dislocation.
Article
Figure 1. Sagittal reconstruction of the computed tomography demonstrating the coronal aspect of the fracture of the left orbital roof (arrow). Other facial fractures present are left-sided frontal bone fracture, minimally displaced left-sided zygomatic fracture, and undisplaced nasal fractures.Figure 2. The coronal slicing of the computed tomograp...
Article
PURPOSE: Trigeminocardiac reflex (TCR) in craniomaxillofacial surgery can lead to severely life-threatening situations. At least mild forms are probably much more common than the existing surgical literature suggests. Therefore, the aim of this presentation of cases and literature review was to evaluate the predisposing factors leading to a classif...
Article
Trigeminocardiac reflex (TCR) in craniomaxillofacial surgery can lead to severely life-threatening situations. At least mild forms are probably much more common than the existing surgical literature suggests. Therefore, the aim of this presentation of cases and literature review was to evaluate the predisposing factors leading to a classification o...
Article
Full-text available
Introduction: Midface fractures represent a significant amount of the traumatological load handled by the Department of Maxillofacial Surgery (MFS), University Hospital, Zurich (USZ). Various fracture classifications have evolved from early descriptions of general patterns to modern, reproducible and computerised schematics. Although the modern cla...

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