Management of adverse effects following additively manufactured subperiosteal jaw implantation in the maxilla.

Objective: This expert opinion presents provisional guidelines for addressing complications associated with Additively Manufactured Subperiosteal Jaw Implants (AMSJI®) in patients with severe maxillary atrophy. AMSJI®'s custom design, supported by finite element analysis (FEA), allows precise placement that avoids critical anatomical structures and minimizes complications relative to alternative solutions.

Materials And Methods: Data were gathered through firsthand experiences, direct communications, and insights from international workgroup meetings.

Soft Tissue Response and Determination of Underlying Risk Drivers for Recession and Mucositis after AMSJI Implantation in the Maxilla.

Purpose: To evaluate the soft tissue response to the placement of additively manufactured subperiosteal jaw implants (AMSJI) in the severely atrophic maxilla and to identify possible risk factors for soft tissue breakdown.

Materials And Methods: An international multicenter study was conducted, and 15 men (mean age: 64.62 years; SD: ± 6.

The ideal shape of the female jaw angle: An online survey.

The aim of this study was to determine the characteristics of an attractive white female jaw angle in the three dimensions. An online survey of photographs of celebrities and laypeople was used to rate their attractiveness using 6 questions and a 3-item Likert scale. If ≥ 80% of participants rated a model as having attractive aesthetic features, it was considered attractive.

Patient Satisfaction and Impact on Oral Health after Maxillary Rehabilitation Using a Personalized Additively Manufactured Subperiosteal Jaw Implant (AMSJI).

Subperiosteal implants (SIs) were first developed by Dahl in 1941 for oral rehabilitation in case of severe jaw atrophy. Over time, this technique was abandoned due to the high success rate of endosseous implants. The emergence of patient-specific implants and modern dentistry allowed a revisitation of this 80-year-old concept resulting in a novel "high-tech" SI implant.

Prevention and non-surgical treatment of soft tissue polly beak deformity after rhinoplasty: a scoping review.

The aim of this study is to map the available evidence of surgical preventive measures and postoperative methods for addressing supratip fibrosis (polly beak deformity) following rhinoplasty, to describe the postoperative results and to identify the most effective techniques. A scoping review was performed, selecting articles from the following medical electronic databases: PubMed, Cochrane Central, EMBASE, and Web of Science up to October 2022. The following keywords were used: supratip fullness, supratip deformity, polly beak deformity and supratip fibrosis.

On the use of intraoperative 3D-RX C-arm imaging in orthognathic surgery: a prospective non-consecutive case series study.

Context: Segment and osteosynthesis malposition resulting in patients' complaints (mainly about asymmetries) are encountered in orthofacial/orthognathic surgery.

Objective, Design, And Setting: We planned to investigate the usefulness of intraoperative three-dimensional (3D) imaging concerning positioning and fixation of bone segments and osteosynthesis in orthognathic/orthofacial surgery. We performed a prospective study of non-consecutive cases.

Success Rate of Mid-Secondary Alveolar Cleft Reconstruction Using Anterior Iliac Bone Grafts: A Retrospective Study.

Introduction: Bony reconstruction of the alveolar process and its adjacent platform largely represents the final step in surgical achievement of functionality and aesthetics in cleft patients. Throughout the years, the success of this procedure has been investigated. The aim of this study was to assess the success rate of autogenous mid-secondary alveolar bone grafting in this setting.

Massive Facial Presentation of Dermatofibrosarcoma Protuberans.

Dermatofibrosarcoma protuberans is a low-grade cutaneous sarcoma typically located on the trunk or proximal extremities. Less common locations include the head, face, and neck area. This tumour is slow growing with variable clinical appearance.

Visual Loss after Cosmetic Blepharoplasty Using Local Anaesthesia Containing Epinephrine - A Case Series.

Rationale: Surgeons should be aware of the risk of vision loss associated with blepharoplasty.

Patient Concerns: All patients complained of decreased vision, redness and/or pain after blepharoplasty using only local anaesthesia containing epinephrine.

Diagnosis: Diagnosis of angle-closure glaucoma (ACG) was made clinically (decreased visual acuity (VA), increased intraocular pressure and a mid-dilated pupil) and through examination (slit lamp examination and dynamic gonioscopy revealed corneal oedema and a shallow anterior chamber respectively).

How surface coatings on titanium implants affect keratinized tissue: A systematic review.

Apart from osseointegration, the stability and long-term survival of percutaneous titanium implants is also strongly dependent on a qualitative soft-tissue integration in the transcutaneous region. A firm connective tissue seal is needed to minimize soft-tissue dehiscence and epithelial downgrowth. It is well-known that the implant surface plays a key role in controlling the biological response of the surrounding keratinized tissue and several coating systems have been suggested to enhance the soft-tissue cell interactions.

Surface wear in a custom manufactured temporomandibular joint prosthesis.

The wear of a novel temporomandibular joint (TMJ) prosthesis was evaluated in an animal model. The prosthesis consisted of an additively manufactured titanium alloy (Ti Al V) mandibular condyle and glenoid fossa created through selective laser melting, with a machined vitamin E-enriched ultra-high molecular weight polyethylene (UHMWPE) surface attached to the fossa. Thirteen TMJ prosthesis were implanted in sheep, six of which had condylar heads coated with HadSat® diamond-like carbon (H-DLC).

Obstacles for accessing customised craniofacial implants in low- and middle-income countries.

Introduction: Many low resourced low- and middle-income countries (LMICs) do not have access to (high tech) developments in the medical field. The aim of this study is to research how a contemporary high-tech solution, such as customized medical implants, can be transferred to low resource LMICs.

Materials And Methods: We explored the internet to retrieve data regarding internet coverage, services providing free email accounts, and the availability of connecting devices.

Radiographic Evaluation of Bone Remodeling after Additively Manufactured Subperiosteal Jaw Implantation (AMSJI) in the Maxilla: A One-Year Follow-Up Study.

Additively manufactured subperiosteal jaw implants (AMSJI) are patient-specific, 3D-printed, titanium implants that provide an alternative solution for patients with severe maxillary bone atrophy. The aim of this study was to evaluate the bony remodeling of the maxillary crest and supporting bone using AMSJI. Fifteen patients with a Cawood-Howell Class V or greater degree of maxillary atrophy were evaluated using (cone beam) computed tomography scans at set intervals: one month (T1) and twelve months (T2) after definitive masticatory loading of bilateral AMSJI implants in the maxilla.

Need for velopharyngeal surgery after primary palatoplasty in cleft patients. A retrospective cohort study and review of literature.

Background: Enabling intelligible speech plays an important role in achieving social inclusion and a good quality of life of cleft patients. A crude measure of primary palatal repair quality is the incidence of operations to correct velopharyngeal insufficiency (VPI) after speech-language therapy has proven inadequate. This study assessed the necessity for surgery to correct velopharyngeal insufficiency following our standardized two-staged protocol, compared the results with the literature, and identified factors that may influence velopharyngeal competence.

Additively manufactured titanium scaffolds and osteointegration - meta-analyses and moderator-analyses of in vivo biomechanical testing.

Introduction: Maximizing osteointegration potential of three-dimensionally-printed porous titanium (3DPPT) is an ongoing focus in biomaterial research. Many strategies are proposed and tested but there is no weighted comparison of results.

Methods: We systematically searched Pubmed and Embase to obtain two pools of 3DPPT studies that performed mechanical implant-removal testing in animal models and whose characteristics were sufficiently similar to compare the outcomes in meta-analyses (MAs).

Guidelines for the Use of Resection Guides for Subperiosteal Maxillary Implants in Cases of Terminal Dentition - A Novel Approach.

Introduction: We described our rationale and experiences with the use of cutting jigs for vertical ostectomy in cases of terminal maxillary dentition when edentulation and an additively manufactured subperiosteal jaw implant (AMSJI®) are planned.

Material And Methods: Our experience covers 15 patients treated by four clinicians. We tabulated our criteria for planning and manufacturing vertical and horizontal ostectomy guides.

Lateral pterygoid muscle enthesis reconstruction in total temporomandibular joint replacement: An animal experiment with radiological correlation.

A novel total temporomandibular joint replacement (TMJR) was developed with CADskills BV (Ghent, Belgium), aiming to achieve reinsertion of the (LPM) onto a scaffold in the implant. In order to investigate the possibility of reinsertion of the LPM, an animal experiment was conducted. An in vivo sheep experiment was conducted, which involved implanting sheep with a TMJR.

Evaluation of Patient-Specific Cranial Implant Design Using Finite Element Analysis.

Background: Various studies have investigated the load-bearing capacity of patient-specific cranial implants. However, little attention has been given to the evaluation of the design of ceramic-titanium (CeTi) implants.

Methods: A biomechanical evaluation of 3 patient-specific cranial implants was performed using finite element analysis.

Ceramic 3D-Printed Titanium Cranioplasty.

Study Design: Inlay cranioplasties following partial craniectomy in tumor or trauma cases and onlay cranioplasties for reconstructions of residual developmental skull anomalies are frequently performed using CAD-CAM techniques.

Objective: In this case series, we present a novel cranial implant design, being a combination of 3D-printed titanium grade 23 and calcium phosphate paste (CeTi).

Methods: The titanium patient-specific implant, manufactured using selective laser melting, has a latticed border with interconnected micropores.

A systematic review of cranioplasty material toxicity in human subjects.

Purpose: Local and systemic toxic reactions to implanted materials can result in morbidities. However, little is reported about cranioplasty implants. Therefore, we performed a systematic review on the toxicity of different materials used for cranioplasty implants.

Third-generation slotplates for orthognathic and facial corrective surgery.

The aim of this study was to retrospectively assess the osteosynthesis material-related morbidity rates of third-generation (3.0) slotplates, and to compare those with the previously researched second-generation (2.0) slotplates.

Extended Total Temporomandibular Joint Replacement with Occlusal Adjustments: Pitfalls, Patient-reported Outcomes, Subclassification, and a New Paradigm.

Context: Alloplastic temporomandibular joint (TMJ) replacement is a treatment strategy for segmental mandibular defects with occlusal abnormalities.

Aims: To describe our experience with extended total TMJ replacement (eTMJR) by reporting operative obstacles, complications, and patient-reported outcomes, as well as to suggest a subclassification system and paradigm shift.

Setting And Design: University hospital and private clinic; case series with retrospective follow-up.

Total Temporomandibular Joint Replacement: Stick to Stock or Optimization by Customization?

Purpose: This article aims to compare the difference in postoperative results in patients treated with either a patient-specific (PSI) or a stock temporomandibular total joint replacement system.

Materials And Methods: The investigators performed a systematic review concerning postoperative results after placement of either a stock total joint replacement system or a PSI. PubMed Central, Web of Science, Cochrane Library Plus, Wiley Online Library, and EMBASE were used to conduct this search.