Effects of preparation technique on periosteal microcirculation after autologous bone augmentation in an animal model.

Trial Design: This controlled in vivo experimental study examines the impact of two periosteum preparation techniques on microcirculation during bone augmentation with isogenic bone grafts in rats.

Methods: Twenty female Lewis rats were divided into two groups (n=10 each). In one group, the periosteum was prepared with a conventional periosteal elevator; in the other, a piezoelectric device was used.

Long-Term Survival of Subperiosteal Implants: Meta-Analysis and Current Status of Subperiosteal Implants for Dental Rehabilitation.

Subperiosteal implants have experienced fluctuating popularity since their inception. Initially introduced in the mid-20th century, they were overshadowed by the development and success of endosteal implants, which are now the standard in dental implantology. Modern subperiosteal implants are typically custom-made using computer-aided design and computer-aided manufacturing technologies, which ensure a precise fit to the patient's bone anatomy.

Guidelines for Orbital Defect Assessment and Patient-Specific Implant Design: Introducing OA (Orbital Assessment Algorithm).

Study Design: This study presents a review of the evolutionary development in reconstructive orbital surgery over the past 3 decades. Additionally, it proposes the Orbital Assessment Algorithm (OA) to enhance decision-making for intraorbital reconstruction of post-traumatic orbital deformities.

Objective: The objective of this paper is to provide insights into modern post-traumatic orbital reconstruction from a surgeon's perspective, with a specific focus on adult patients.

Covering skin defects with a xenogeneic collagen matrix in comparison with a skin graft - A multicenter randomized controlled trial.

The objective of this study was to analyze, in a randomized controlled multicenter trial, whether a xenogeneic collagen matrix (XCM) could be used to cover skin defects. Patients with the need for skin excisions were recruited and randomized to treatment with a skin graft after a period of granulation or to treatment with an XCM. The results were evaluated by two independent observers on the Patient and Observer Scar Assessment Scale.

Differences in velopharyngeal pressures during speech sound production in patients with unilateral cleft lip and palate (UCLP) and healthy individuals.

Background: During articulation the velopharynx needs to be opened and closed rapidly and a tight closure is needed. Based on the hypothesis that patients with cleft lip and palate (CLP) produce lower pressures in the velopharynx than healthy individuals, this study compared pressure profiles of the velopharyngeal closure during articulation of different sounds between healthy participants and patients with surgically closed unilateral CLP (UCLP) using high resolution manometry (HRM).

Materials And Methods: Ten healthy adult volunteers (group 1: 20-25.

Exceptional Cases Demand Exceptional Personalized Solutions: The Next Level in Dental Rehabilitation.

Defects and bone loss in the maxilla and mandible pose significant challenges for dental rehabilitation. This paper focuses on complex cases of bimaxillary dental rehabilitation, where traditional dental implant protocols were not feasible in at least one jaw. Four patients were examined conceptually, where conventional dental implant placement (n = 20) was combined in either the same or opposite jaw with a patient-specific subperiosteal implant (n = 5).

A Novel Method for Secondary Mandible Reconstruction to Re-Achieve a Native Condyle Position Comprising a New Design for Cutting Guides and New Positioning Devices.

Secondary mandibular reconstruction using fibular free flaps (FFF) is a technical challenge for surgeons. Appropriate operation planning is crucial for postoperative quality control and is notably necessary for the (re-) achievement of a physiological condylar position, and the sensible expansion and shaping of the transplant. Computer-assisted planning may help to reconstruct mandibular defects in a patient-specific and precise manner.

Goldenhar Syndrome: Quality-of-Life Analysis of 43 Consecutive Patients.

Goldenhar syndrome is a rare congenital disease, characterized by the malformation of craniofacial features, spine, and other organs. Its pathogenesis and impact on patients' quality of life (QoL) have not been fully elucidated as yet. Therefore, data of all patients with Goldenhar syndrome, who were treated at Hannover Medical School between 1997 and 2020, were analyzed.

Dental rehabilitation in irradiated oral cancer patients using patient-specific dental implants - Clinical outcome and oral health-related quality of life.

Introduction: Dental rehabilitation in oral cancer patients is essential for good oral health-related quality of life (OHRQoL). Patient-specific dental implants are suitable for treating tumor-related bony defects, resulting in satisfactory OHRQoL. However, knowledge concerning the clinical outcome and OHRQoL following tumor irradiation is lacking.

Alendronate reduces periosteal microperfusion in vivo.

Objectives: Bisphosphonates are known to induce a severe adverse effect known as medication-related osteonecrosis of the jaw (MRONJ). Previous studies have proven the impact of bisphosphonates on microperfusion; therefore, this study aimed to investigate alendronate-induced microcirculatory reactions in the calvarial periosteum of rats.

Study Design: Bone chambers were implanted into 48 Lewis rats.

Improving instrument detection for a robotic scrub nurse using multi-view voting.

Purpose: A basic task of a robotic scrub nurse is surgical instrument detection. Deep learning techniques could potentially address this task; nevertheless, their performance is subject to some degree of error, which could render them unsuitable for real-world applications. In this work, we aim to demonstrate how the combination of a trained instrument detector with an instance-based voting scheme that considers several frames and viewpoints is enough to guarantee a strong improvement in the instrument detection task.

Congenital Mandibular Hypoplasia: Patient-Specific Total Joint Replacement as a Line Extension in the Treatment of Complex Craniofacial Anomalies.

Introduction: Congenital mandibular hypoplasia (CMH) remains challenging because of the underlying combined hard and soft tissue deficiency. Treatment options include craniofacial distraction, orthognathic surgery, and autologous grafts, although the latter produces inadequate results after distraction and autologous grafting. Unsatisfactory long-term stability may cause relapse, necessitating reoperation.

Correction to: Patient-Specific Mandibular Reconstruction Plates Increase Accuracy and Long-Term Stability in Immediate Alloplastic Reconstruction of Segmental Mandibular Defects.

[This corrects the article DOI: 10.1007/s12663-019-01323-9.].

Patient-specific implants for reconstruction of orbit and skull following resection of spheno-orbital meningiomas: A two-implant concept.

Introduction: The surgical treatment of spheno-orbital meningioma (SOM) is challenging. In addition to anatomical constraints that lead to a difficult resection, the reconstruction of the resulting defect is demanding. Uniform recommendations concerning the best reconstruction technique are not available in the existing literature.

Socio-demographic aspects and treatment-related factors on oral cancer patients' participation in rehabilitation.

Objectives: After resection of an oral carcinoma, patients are faced with physical, psychological, and socioeconomic challenges. Rehabilitation plays an essential role in patients' reintegration into their social and professional environment. This study evaluated whether socioeconomic aspects affect oral cancer patients' participation in rehabilitation treatment.

Implants placed in an alveolar ridge with a sloped configuration. A 3-year prospective multicenter study.

Aim: The aim of the present study was to evaluate soft and hard tissue alterations around implants with a modified marginal portion placed in a healed, sloped ridge over 3 years of follow-up.

Material And Methods: 65 patients with a single recipient implant site in an alveolar ridge with a lingual-buccal sloped configuration were recruited. Implants with a modified geometry in the marginal portion were installed in such a way that the sloped part of the device was located at the buccal and most apical position of the osteotomy preparation.

Computer-assisted orbital and midfacial reconstruction.

Objective: Computer assistance has become indispensable in the reconstruction of the orbit and midface. Although these are key areas of an individual's esthetic appearance, defects or deformities of the midface, especially those of the orbit, are treated diversely.

Methods: The aim of this article is to present the wide utility of computer-assistance in modern craniomaxillofacial surgery, including virtual planning, computer-aided design, guided surgery, navigational control, patient-specific implants, and quality control via image fusion.

Time is crucial in malignant tumor cases: Speeding up the process of patient-specific implant creation.

Purpose: Patient-specific implants are commonly used to reconstruct lower jaw defects following surgical treatment for head and neck squamous cell carcinoma. The planning process of surgery is time-consuming and can delay the "time to surgery," which should be as short as possible. Therefore, this study aimed to evaluate the planning process to speed up and identify any sources of problems.

[Optic nerve decompression-state of the art].

Rarely, but often with serious consequences for the patient, the optic nerve is affected during the course of head injuries. Traumatic optic nerve compression is always an emergency situation, which is why time is of the essence for both diagnosis and treatment. Precise knowledge of this accident sequelae but also of the resulting conditions, especially in terms of traumatic optic neuropathy, is indispensable for adequate patient care.

Prospective Clinical Multicenter Study Evaluating the 5-Year Performance of Zirconia Implants in Single-Tooth Gaps.

Purpose: In recent years, ceramic implants made of zirconia have secured a niche position next to established titanium implants, due partly to new scientific findings and positive clinical experience with the handling of ceramic implants. The aim of this study was to assess the clinical and radiographic data for monotype ceramic implants that have remained in place for 60 months under masticatory loading.

Materials And Methods: In 2011, this prospective clinical study included patients with a single-tooth gap in the maxilla and mandible.

Deep-learning-based instrument detection for intra-operative robotic assistance.

Purpose: Robotic scrub nurses have the potential to become an attractive solution for the operating room. Surgical instrument detection is a fundamental task for these systems, which is the focus of this work. We address the detection of the complete surgery set for wisdom teeth extraction, and propose a data augmentation technique tailored for this task.

No Significant Bone Resorption after Open Treatment of Mandibular Condylar Head Fractures in the Medium-Term.

Open treatment of condylar head fractures (CHF) is considered controversial. In this retrospective cohort study our primary objective was therefore to assess bone resorption and remodeling as well as patients function after open treatment of CHF in a medium-term follow-up (15.1 ± 2.