Indications and surgical technique for distraction osteogenesis of the alveolar bone for augmentation prior to insertion of dental implants.

When bone is limited, short, ultra-short, or narrow implants help to restore oral rehabilitation with an acceptable long-term outcome. This becomes more difficult with severe vertical bone loss. Guided bone regeneration, onlay block transplantation, or sandwich osteotomy have been established to build up these defects.

Prophylactic removal of titanium osteosynthesis miniplates in patients after midface fractures - A retrospective cohort study.

The aim of the study was to evaluate prophylactic removal of titanium osteosynthesis miniplates in patients after midface fractures. Complaints after fracture treatment and complications after plate removal were analyzed, retrospectively. A total of 205 patients were included.

Morphological Studies to Identify the Nasopalatine and Inferior Alveolar Nerve Using a Special Head and Neck MRI Coil.

Objectives: Procedures in oral and maxillofacial surgery bear a high risk of nerve damage. Three-dimensional imaging techniques can optimize surgical planning and help to spare nerves. The aim of this study was to investigate the diagnostic value of a 1.

Surgical side infections of the tracheostomy - A retrospective cohort study of patients with head and neck cancer in intensive care.

This study was conducted to reveal the relevant risk factors for surgical site infections (SSI) of the tracheostomy in ICU tracheostomy patients with oncologic history. Retrospectively, medical and ICU records of patients who received open tracheostomy in a uniform manner were investigated. Of 187 consecutive patients in total, patients with a peri/post-operative antibiotic prophylaxis (POABP) experienced significantly more Organ-Space SSI, whereas patients with a POABP developed less Superficial Incisional SSI and Deep Incisional SSI.

Airway-Associated Complications With and Without Primary Tracheotomy in Oral Squamous Cell Carcinoma Surgery.

Purpose: This study analyzes postoperative airway management, tracheotomy strategies, and airway-associated complications in patients with oral squamous cell carcinoma in a tertiary care university hospital setting.

Material And Methods: After institutional approval, airway-associated complications, tracheotomy, length of hospital stay (LOHS), and length of intensive care unit stay were retrospectively recorded. Patients were subdivided in primarily tracheotomized and not-primarily tracheotomized.

3D-based buccal augmentation for ideal prosthetic implant alignment-an optimized method and report on 7 cases with pronounced buccal concavities.

Objectives: Screw-retained restoration of implants is advantageous for biological and esthetic reasons. Due to buccal concavities, however, this preferred type of restoration can only be used in about half of the anterior indications. Based on case series, an optimized method for the treatment of such indications is to be described; the clinical reliability is to be ascertained by means of measurements (before and after augmentation) and assigned to the current literature.

1.5 T MRI with a Dedicated Dental Signal-Amplification Coil as Noninvasive, Radiation-Free Alternative to CBCT in Presurgical Implant Planning Procedures.

Purpose: Cone beam computed tomography (CBCT) is considered both reliable and safe and provides reproducible results in guided dental implant planning procedures. However, it has weaknesses in soft tissue contrast and is associated with radiation exposure. Recent studies showed promising results with magnetic resonance imaging (MRI) as a possible noninvasive, radiation-free, alternative imaging modality for dental indications.

Anatomical and volumetric analysis of fibro-osseous lesions of the craniofacial skeleton.

Purpose: Our study aimed to provide volumetric data relating to fibro-osseous lesions of the craniofacial skeleton, in order to highlight risk factors due to the different entities, and to guide clinical decisions for jeopardized patients.

Methods: Volumetric measurements of osteomas and ossifying fibromas were performed by applying the open-source software ITK-Snap to cone-beam computed tomography images. DICOM datasets were imported, identified, and delineated using semiautomatic segmentation; this was then verified using manual segmentation.

A Volumetric and Morphological Analysis of Recurrent Odontogenic Keratocysts by Semiautomatic Segmentation.

Purpose: The authors conducted this study to provide morphological and volumetric data of recurrent odontogenic keratocysts of the upper and lower jaw to emphasize risk factors in accordance with their radiological appearance and guide clinical decisions for jeopardized patients.

Methods: By applying the open-source software "ITK-Snap" on cone-beam computed tomography images, volumetric measurements of histopathologically diagnosed recurrent odontogenic keratocysts could be performed. For statistical investigations, descriptive statistics and independent Student t test were performed.

Outcomes of the Nonendoscopic Transoral Approach to Subcondylar Mandible Fractures.

Purpose: The transoral approach (TRA) to subcondylar fractures without any endoscopic or transbuccal assistance is not a common technique. The purpose of this study was to measure and compare the quality of open reduction and internal fixation (ORIF) between the TRA and the retromandibular approach (RMB), including types and frequencies of postoperative complications.

Methods: In our retrospective cohort study, we enrolled a sample of patients with displaced subcondylar mandible fractures treated by ORIF.

Volumetric and Morphological Analysis of Mandibular Condyles of Angle Class 2 and 3 Malocclusion Patients.

This study was conducted to provide diametric and volumetric data of mandibular condyles from patients with Angle class 2 and 3 malocclusions by semiautomatic segmentation based upon cone-beam computed tomography.Cone-beam computed tomography images of 79 patients were analyzed. By using the open-source software "ITK-SNAP", diametric and volumetric measurements of 158 mandibular condyles were performed.

Volumetric Analysis and Clinical Outcome in 54 Patients with Retrobulbar Hematoma.

Purpose: Retrobulbar hematoma (RBH) is a rare but serious vision threatening emergency. We analyze the relationship between hematoma volume, visual impairment and outcome.

Methods: Fifty-four patients with RBH receiving orbital decompression were retrospectively included.

An Innovative Approach for Preoperative Perforator Flap Planning Using Contrast-enhanced B-flow Imaging.

Precise perforator mapping of the epifascial and subcutaneous course of the perforator flaps, including the precise detection of the skin point, is mandatory for successful preoperative flap design and planning of supramicrosurgery. We investigated the effectiveness of contrast-enhanced B-flow (BCEUS) imaging for perforator mapping and preoperative perforator flap planning and compared it with B-flow ultrasound, contrast-enhanced ultrasound, and color Doppler ultrasound. Sixteen patients who received an individualized perforator flap reconstruction were included in the study.

Bisphosphonate application and volumetric effects on MRONJ lesions.

The purpose of this investigation was to analyze the volume of medication-related osteonecrosis of the jaw (MRONJ) lesions by semi-automatic segmentation of cone-beam computed tomography images, and correlate the results with the underlying diseases and applied medication. MRONJ lesions detected in cone-beam computed tomography images were assessed. The open-source software ITK-Snap enabled volumetric measurements of MRONJ lesions based on semi-automatic segmentation.

Mandible Fractures Associated With the Introduction of an E-Scooter-Sharing System.

With the introduction of an e-scooter-sharing system in Germany, standing electric scooters became popular modes of transportation in many urban areas. But the increase in popularity has resulted in an increase in traumatic injuries associated with e-scooter accidents. The purpose of this investigation was to determine the common fracture pattern of patients with mandible fractures as a result of an electric scooter accident.

Retrospective analysis of open bedside tracheotomies in a German tertiary care university hospital.

Objective: Open surgical tracheotomy performed beside (STB) is a standardized procedure in critical ill patients. The aim of the study was to evaluate perioperative complications and the safety of STB in a tertiary care university hospital setting.

Materials And Methods: Intra- and postoperative complications were retrospectively recorded and associations based on the evaluation of clinical and laboratory parameters were studied using regression analyses.

Survival outcomes after surgical treatment of oral squamous cell carcinoma.

Objective: To identify the clinicopathological parameters that influence survival in patients with oral squamous cell carcinoma, in order to allow for the development of individualized surveillance programmes and reduce the delay in diagnosis of recurrence.

Materials And Methods: Retrospective chart review of 553 patients with a treatment-naïve primary oral squamous cell carcinoma, who underwent primarily curative intended surgery. Exclusion criteria were neoadjuvant radio(chemo)therapy, follow-up < 1 year, perioperative death, inoperable disease, synchronous multiple malignancies and inadequate information on clinicopathological parameters.

Volumetric Analysis of the Pterygopalatine Fossa by Semiautomatic Segmentation of Cone Beam Computed Tomography.

The aim of this study was to provide volumetric data of the pterygopalatine fossa by semiautomatic segmentation based upon cone beam computed tomography.Cone beam computed tomography (CBCT) images of 100 patients were analyzed. By using the open source software "ITK-Snap," the volumetric measurements of 200 pterygopalatine fossae were performed.

Does SPECT Provide Incremental Value to CT or MRI in Assessing Mandibular Invasion by Oral Squamous Cell Carcinoma?

Purpose: Single photon emission computed tomography (SPECT) has been commonly used as an additional method to assess mandibular bone invasion in patients with oral squamous cell carcinoma (OSCC). In the present study, we measured the diagnostic validity of SPECT findings compared with the histologic findings.

Patients And Methods: We implemented a retrospective cross-sectional study and enrolled a sample of patients with OSCC adjacent to the mandible.

Postoperative complications after bimaxillary orthognathic surgery: A retrospective study with focus on postoperative ventilation strategies and posterior airway space (PAS).

Purpose: The aim of this study was to evaluate the impact of extubation time on postoperative complications in patients undergoing bimaxillary orthognathic surgery. We therefore retrospectively compared the effect of early extubating (EE) in the operating room versus delayed extubating (LE) on the intensive care unit (ICU) regarding postoperative complications and length of ICU/hospital stay (LOICUS/LOHS). Furthermore, we analyzed the influence of the PAS change on postoperative complications.

Analysis of the Pterygomaxillary Fissure for Surgical Approach to Sphenopalatine Ganglion by Radiological Examination of Cone Beam Computed Tomography.

The pterygopalatine fossa (PPF) is a complex and paired anatomical structure located at the skull base. A clinically and surgically relevant structure located in the pterygopalatine fossa is the sphenopalatine ganglion. Electrical stimulation of the sphenopalatine ganglion is one possible method of treating cluster headache.

Volumetric analysis of MRONJ lesions by semiautomatic segmentation of CBCT images.

Purpose: The purpose of this study was to evaluate potential differences in volumes of areas of osteolysis caused by medication-related osteonecrosis of the jaw (MRONJ) between the upper and lower jaw. We aim to analyze the clinical relevance of volumetric measurement of osteolytic lesions for surgical planning of MRONJ patients.

Methods: Sixty-seven patients who were clinically and histopathologically diagnosed with MRONJ were retrospectively included in this study.

Oral recipient site infections in reconstructive surgery - impact of the graft itself and the perioperative antibiosis.

Objectives: This study was designed to assess the influence of peri/post-operative antibiotic prophylaxis (POABP) and the reconstructive graft itself on recipient sites infections in head and neck surgery.

Materials And Methods: In this retrospective cohort study, 322 consecutive patients with reconstructive surgery were investigated. The primary objective was to analyze the differences of commonly applied reconstructive grafts on the occurrence of oral recipient site infections.

3D-based full-guided ridge expansion osteotomy - A case report about a new method with successive use of different surgical guides, transfer of splitting vector and simultaneous implant insertion.

For horizontal bone deficiency alveolar ridge osteotomy is considered an option for augmentation. Major advantages are the option for a one-stage approach and the absence of donor site morbidity. However, the conventional technique is associated with complications such as perforations and fractures of the cortical bone.

Comparison of MRI with dedicated head and neck signal amplification coil and cone beam computed tomography: MRI is a useful tool in diagnostics of cranio-facial growth disorders.

Objective: Magnetic resonance imaging (MRI) shows excellent image quality for the depiction of soft tissues and is therefore an important imaging technique in medical diagnostics. However, the practical simultaneous presentation of hard and soft tissue structures of the mouth, jaw and facial area is not fully satisfactory at this time. We investigated the image quality of 1.