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Aesthet Surg J 2021 Apr 27. Epub 2021 Apr 27.

Division of Plastic Surgery and Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.

J Craniofac Surg 2021 Mar-Apr 01;32(2):738-739

Maxillo-Facial Surgeon, Ortognatica Roma.

Abstract: The surgical approach to chin for esthetical purpose can be isolated or in a combination with other treatments like maxillomandibular surgery. Both possibilities include sliding genioplasty or implants of autologous or alloplastic materials. In this article, the authors present their new technique, the Pyramid Chin Augmentation. Read More

Chin Med J (Engl) 2021 Jan 19;134(7):806-813. Epub 2021 Jan 19.

Department of General Surgery, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China.

Background: Mastectomy techniques have been extended to nipple-sparing mastectomy (NSM). This study aimed to assess the actual application of NSM in China and identify the factors influencing postoperative complications.

Methods: The clinical data of 615 patients (641 surgeries) undergoing NSM from January 1st, 2018 to December 31st, 2018 at 28 centers nationwide were retrospectively analyzed to obtain the rate of NSM and investigate factors related to NSM surgery. Read More

Int J Surg Case Rep 2020 25;77:766-768. Epub 2020 Nov 25.

King Faisal Specialist Hospital and Research Centre, Department of Surgery, Plastic and Reconstructive Surgery Section, Riyadh, Saudi Arabia.

Introduction: Implant-based genioplasty is a simple and safe but not complication-free cosmetic procedure. Patients are commonly briefed about anticipated complications and their management pre-operatively, but few unexpected complications may arise; and this case report is an example. This paper is the first to report a radicular cyst fistulating through chin implant pocket to the skin. Read More

J Oral Maxillofac Res 2020 Jul-Sep;11(3):e1. Epub 2020 Nov 30.

Department of Periodontology, Rio de Janeiro State University, Rio de JaneiroBrazil.

Objectives: The aim of this systematic review was to test the hypothesis of no difference in complications and donor site morbidity following harvesting of autogenous bone graft from the ascending mandibular ramus compared with the chin region.

Material And Methods: MEDLINE (PubMed), Embase and Cochrane Library search in combination with a hand-search of relevant journals was conducted including human studies published in English through June 26, 2020. Randomized and controlled trials were included. Read More

Biomaterials 2021 Feb 16;269:120534. Epub 2020 Nov 16.

MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, 310058, China. Electronic address:

The dual functional implants of antibacteria and osteointegration are highly demanded in orthopedic and dentistry, especially for patients who suffer from diabetes or osteoporosis simultaneously. However, there is lack of the facile and robust method to produce clinically applicable implants with this dual function although coatings possessing single function have been extensively developed. Herein, hyperbranched poly-L-lysine (HBPL) polymers were covalently immobilized onto the alkali-heat treated titanium (Ti) substrates and implants by using 3-glycidyloxypropyltrimethoxysilane (GPTMS) as the coupling agent, which displayed excellent antibacterial activity against S. Read More

Oral Maxillofac Surg 2020 Nov 24. Epub 2020 Nov 24.

Oral and Maxillofacial Surgery, Faculty of Dentistry, Beni-Suef University, East Nile educational compound, Beni-Suef, 62764, Egypt.

Purpose: This study aims to compare the quality of free autogenous bone grafts harvested from two different mandibular donor sites, used as onlay shells to augment horizontally and vertically deficient anterior maxillary alveolar ridges.

Methods: Fourteen patients with edentulous and atrophic anterior maxillae are randomly allocated into two groups. Seven symphyseal chin (group I) and seven retromolar (group II) mandibular bone grafts were harvested and fashioned to construct buccal and palatal frameworks, fixed in place with mini-screws, followed by compacting the inter-positional gaps with an equal particulate mix of xenograft and autogenous cancellous particulates. Read More

Clin Cosmet Investig Dent 2020 21;12:429-436. Epub 2020 Oct 21.

Department of Conservative Dentistry and Endodontics, Vivekananda Dental College for Women, Tiruchengod, Tamilnadu, India.

Background: The mylohyoid nerve is a branch of the inferior alveolar nerve (IAN), which is a branch of the posterior division of the mandibular nerve (MN). It is the source of motor nerve supply to the mylohyoid and anterior belly of the digastric muscle. At times, it provides sensory innervation to the mandibular teeth and skin below the chin. Read More

J Oral Biol Craniofac Res 2020 Oct-Dec;10(4):674-679. Epub 2020 Aug 8.

Dept of Oral & Maxillofacial Surgery, King George's Medical University, Lucknow, India.

Introduction: Finite element analysis (FEA) is a method to mimic the biomechanical behaviour of an object under various loading scenarios, and may be used during virtual planning of the TMJ prosthesis. Here we present an interesting case report where FEA was done to biomechanically evaluate patient specific total joint replacement prosthesis for bilateral TMJ replacement.

Case Report: A 22 year old young girl visited our outpatient clinic with a chief complaint of retruded chin and limited mouth opening for the last 15 years. Read More

Zhonghua Yan Ke Za Zhi 2020 Oct;56(10):730-734

Department of Ophthalmology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China.

Keratoprosthesis implantation as an effective therapeutic method has been a treatment strategy in end-stage corneal blindness, contributing to restore vision and reduce the prevalence of blindness, but it has been restricted because of its high surgical technique and devastating complications. There are a large number of patients with corneal blindness in China, and the rate of high-risk or end-stage corneal blindness is high. It is of great significance to improve the understanding of the indications and contraindications of different kinds of keratoprostheses, as well as relevant technologies and knowledge, cope with the problems and challenges in the development period, and conduct safe and efficient clinical applications and related research, so that the technology of keratoprosthesis implantation in our country can go to the world steadily. Read More

Int J Mol Sci 2020 Oct 9;21(20). Epub 2020 Oct 9.

Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.

In this study, we optimized the geometry and composition of additive-manufactured pedicle screws. Metal powders of titanium-aluminum-vanadium (Ti-6Al-4V) were mixed with reactive glass-ceramic biomaterials of bioactive glass (BG) powders. To optimize the geometry of pedicle screws, we applied a novel numerical approach to proposing the optimal shape of the healing chamber to promote biological healing. Read More

Chin J Dent Res 2020 ;23(3):215-220

The main goal of this report was to solve a clinical case of a 73-year-old man with diabetes, partial edentulism and a pathological occlusion with biocorrosion using conservative and adhesive techniques. A complete rehabilitative treatment was performed, increasing the vertical dimension of occlusion using indirect restorations with composite resins on teeth and resin crowns on implants and returning function using mutually protected occlusion. A 6-month posttreatment clinical and radiographic follow-up was performed. Read More

Br J Oral Maxillofac Surg 2021 01 20;59(1):129-131. Epub 2020 Aug 20.

Department of Medicine, University of Franche-Comté, 19 Rue Ambroise Paré, 25000 Besançon, France; Nanomedicine Lab, Imagery and Therapeutics, EA 4662, Department of Medicine, University of Franche-Comté, 19 Rue Ambroise Paré, 25000 Besançon, France; Host-Graft Interactions Lab - Tumor-Cell and Tissue engineering (UMR 1098 INSERM/UFC/EFS), University of Franche-Comté, 1 Boulevard Fleming, 25020 Besançon, France. Electronic address:

Am J Orthod Dentofacial Orthop 2020 Aug;158(2):286-299

Department of Electrical Engineering, ESAT/PSI, Katholieke Universiteit Leuven, Leuven, Belgium; Medical Imaging Research Center, Universitair Ziekenhuis Leuven, Leuven, Belgium.

Introduction: Although stereophotogrammetry is increasingly popular for 3-dimensional face scanning, commercial solutions remain quite expensive, limiting its accessibility. We propose a more affordable, custom-built photogrammetry setup (Stereo-Face 3D, SF3D) and evaluate its variability within and between systems.

Methods: Twenty-nine subjects and a mannequin head were imaged 3 times using SF3D and a commercially available system. Read More

J Oral Maxillofac Surg 2020 Oct 29;78(10):1869.e1-1869.e10. Epub 2020 Jun 29.

Attending Head and Neck/Microvascular Surgeon, Providence Oral, Head and Neck Cancer Program and Clinic, Providence Cancer Center, Portland, OR Director of Maxillofacial Trauma, Trauma Service, Legacy Emanuel Medical Center, Portland, OR and Consultant, Head and Neck Institute, Portland, OR.

Purpose: The Jaw in a Day (JIAD) procedure allows for complete primary reconstruction of bone and teeth during the same operation as tumor resection. We reviewed 12 cases, the largest published case series of the JIAD procedure, and discussed both the prosthodontic and surgical considerations.

Materials And Methods: A multi-institutional retrospective chart review was completed to identify patients undergoing the JIAD procedure. Read More

Chin Clin Oncol 2020 Aug 17;9(4):49. Epub 2020 Jul 17.

Radiotherapy and Medical Physics Service, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, México.

Epithelial ovarian cancer (OC) is known to be a neoplasm responsive to radiotherapy (RT). Nevertheless, the role of RT in the management of this disease represent a topic of controversy, and the indications for its use are not fully established. Initial studies suggested that the addition of RT in the form of intraperitoneal (IP) radioisotopes was useful. Read More

Chin Med Sci J 2020 Jun;35(2):121-134

Department of Adult Cardiac Surgery; Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China.

Objective Post-operative cognitive dysfunction (POCD) and post-operative delirium (POD) are two common post-operative cerebral complications. The current meta-analysis was to systematically review the effects of penehyclidine hydrochloride (PHC) on POCD and POD in surgical patients.Methods Electronic databases were searched to identify all randomized controlled trials comparing PHC with atropine/scopolamine/placebo on POCD and POD in surgical patients. Read More

Stomatologiia (Mosk) 2020 ;99(3):47-51

S.M. Kirov Military Medical Academy, Ministry of Defense of the Russian Federation, Saint-Petersburg, Russia.

Correction of the lower jaw contours is one of the most popular tasks in aesthetic maxillofacial surgery. There are many reduction operations aimed at changing the shape of the lower jaw. However, augmentation mandible plasty is mainly associated with the use of synthetic implants. Read More

J Oral Maxillofac Surg 2020 Oct 15;78(10):1832.e1-1832.e12. Epub 2020 May 15.

Associate Professor, Oral and Maxillofacial Surgery Department, Public Assistance Hospitals of Paris (APHP)-Pitié-Salpetrière University Hospital, Paris, France; and Sorbonne University, UPMC Paris 06 University, Paris, France.

Purpose: Conventional orthognathic osteotomies provide appropriate functional outcomes but might be unable to correct midface deficiency, achieve a satisfactory outcome in asymmetrical cases, or allow sufficient chin advancement. We evaluated the outcome of both standard and customized facial high-density porous polyethylene implants used to refine the cosmetic outcome of orthognathic surgery.

Patients And Methods: We implemented a retrospective study. Read More

Case Rep Dent 2020 9;2020:6525797. Epub 2020 Jun 9.

Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, University of Milan, Via della Commenda 10, 20122 Milan, Italy.

The successful use of osseointegrated implants in the treatment of partial or complete edentulism requires a sufficient bone support. Whenever rehabilitation in atrophic edentulous areas is needed, bone augmentation procedures are recommended. The aim is to provide adequate amount of supporting bone to achieve a prosthetically guided implant placement. Read More

J Craniomaxillofac Surg 2020 Jul 19;48(7):653-660. Epub 2020 May 19.

University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120, Heidelberg, Germany.

Purpose: To assess the accuracy of laser-melted patient-specific implants (PSI) with regard to a preoperative virtual treatment plan for genioplasty based on a new analysis method without the use of landmarks.

Materials And Methods: A retrospective evaluation of a cohort of Class II and Class III patients who had undergone virtually planned orthognathic surgery (including genioplasty) was carried out. The preoperative virtual treatment plan and the postoperative outcome were fused to calculate the translational and rotational discrepancies between the 3D planning and the actual surgical outcome. Read More

Spine Deform 2020 10 3;8(5):893-899. Epub 2020 Jun 3.

Icahn School of Medicine, Mount Sinai Hospital, 5 E 98th St., 4th Floor, New York, NY, USA.

Study Design: This study is a single-center retrospective radiographic review.

Objectives: The objective of this study is to evaluate a novel measurement parameter, mandibular slope (MS), as a measure of horizontal gaze.

Introduction: Assessment of sagittal spinal alignment is essential in the evaluation of spinal deformity patients. Read More

BMC Oral Health 2020 05 27;20(1):153. Epub 2020 May 27.

Department of Orthodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, 155 5th Street, San Francisco, CA, 94103, USA.

Background: With the aid of implants, Björk identified two-dimensional mandibular stable structures in cephalograms during facial growth. However, we do not know what the three-dimensional stable structures are with certainty. The purpose of this study was to identify the most stable mandibular landmarks in growing patients using three-dimensional images. Read More

Zhonghua Yan Ke Za Zhi 2020 Apr;56(4):246-249

Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing 100044, China.

Retinal vein occlusion (RVO) is the consequence of obstruction of retinal vein system caused by a variety of etiologies. Its ocular complications include macular edema, retinal ischemia and neovascular glaucoma. Although many drugs for management of RVO are available, some doctors do not fully understand the exact purpose of each treatment. Read More

Biomaterials 2020 07 31;246:120012. Epub 2020 Mar 31.

MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, 310058, China. Electronic address:

The immune system responds immediately to tissue trauma and to biomaterial implants under the participation of M1/M2 macrophages polarization. The surface properties of biomaterials can significantly influence the tissue repair progress through modulating the macrophage functions. In this study, the surface of poly(propylene fumarate) polyurethane films (PPFU) is grafted with a same density of enantiomeric poly-l-lysine (PPFU-g-PLL) and poly-d-lysine (PPFU-g-PDL), leading to a similar level of enhanced surface wettability for the PPFU-g-PLL and PPFU-g-PDL. Read More

J Orthop Trauma 2020 Apr;34(4):199-205

Biedermann Lab for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA; and.

Objectives: To make direct comparisons of the biomechanical properties of a control (CTL) group and implants that were augmented with far cortical locking (FCL), bone substitute material (BSM), and a combination of both (ALL) to determine which fixation is most effective in reducing implant failure.

Methods: The constructs were tested with osteopenic cadaveric specimens in a two-part fracture model. Specimens were subjected to a battery of nondestructive torsion and axial compression tests, followed by a cyclic test. Read More

Chin Clin Oncol 2020 Apr 11;9(2):14. Epub 2020 Feb 11.

Department of Radiotherapy, ICANS, Institut Cancérologie Strasbourg Europe, 67200 Strasbourg Cedex, France; Strasbourg University, CNRS, IPHC UMR 7178, Centre Paul Strauss, UNICANCER, 67000 Strasbourg, France.

Background: Metallic implants (MIs) complicate radiotherapy planning. Several studies have worked on tissue-equivalent phantoms as experimental models to estimate dose distributions in this context. The application of these results to clinical practice remains disputable because the inhomogeneity of human tissue densities is a difficult factor to integrate into dose calculation software. Read More

J Cataract Refract Surg 2020 03;46(3):474-477

From the Department of Ophthalmology, Inha Vision Science Laboratory, Inha University School of Medicine, Incheon, South Korea.

This is a case report on the use of Eckardt keratoprosthesis for pars plana vitrectomy in a patient with endophthalmitis and suppurative keratitis that developed after cataract surgery. A 79-year-old woman developed acute-onset infectious endophthalmitis and suppurative keratitis after cataract surgery that failed to respond to treatment with antibiotic eyedrops and intravitreal antibiotic injection. Using a temporary keratoprosthesis that enabled sufficient visualization, vitrectomy was performed, followed by therapeutic keratoplasty using a cryopreserved donor cornea. Read More

Spine Deform 2020 02 16;8(1):135-138. Epub 2020 Jan 16.

Department of Orthopedic Surgery, Washington University, 1 Brookings Dr, St. Louis, MO, 63130, USA.

Study Design: Case report.

Objective: To describe the importance of preoperative halo-gravity traction and posterior vertebral column resection (PVCR) for severe proximal thoracic kyphoscoliosis associated with Desbuquois dysplasia, after breakage of a growing rod construct. Desbuquois dysplasia is a rare, autosomal recessive chondrodysplasia characterized by short stature, joint laxity, kyphoscoliosis, and characteristic facial dysmorphism. Read More