Sylvain Catros

University of Bordeaux · Faculty of Dentistry

Despite progress in bone tissue engineering, reconstruction of large bone defects remains an important clinical challenge. Here, a biomaterial designed to recruit bone cells, endothelial cells, and neuronal fibers within the same matrix is developed, enabling bone tissue regeneration. The bioactive matrix is based on modified elastin‐like polypepti...

Dental implants have been clinically used for almost five decades with high success rates. In vitro research models used in implant dentistry are limited to two-dimensional experiments, which are reproducible and well adapted to evaluate a single parameter but do not reproduce the complexity of clinical settings. On the contrary, the in vivo resear...

La chirurgie osseuse pré-implantaire en chirurgie orale permet de reconstruire les atrophies des maxillaires en rapport avec des processus traumatiques, infectieux ou tumoraux. Dans ce contexte, le biomatériau idéal reste l’os autogène mais les biomatériaux (d’origine naturelle ou synthétique) permettent de limiter la morbidité liée aux prélèvement...

Dental health is frequently altered in patients with chronic kidney disease. We conducted a prospective study on dental health in CKD patients with a specific interest in the association between dental health issues and the accumulation of uremic toxins in the saliva. A total of 88 patients were included in the study, with chronic kidney disease st...

Introduction: Guided bone regeneration (GBR) procedures require selecting suitable membranes for oral surgery. Pullulan and/or dextran-based polysaccharide materials have shown encouraging results in bone regeneration as bone substitutes but have not been used to produce barrier membranes. The present study aimed to develop and characterize pullula...

Actinic cheilitis is an oral potentially malignant disorder caused by UV radiation leading to damage to epithelial keratinocytes of the lips. It predominantly affects the vermillion border of the lower lip. Due to its association with chronic UV exposure, associated risk factors include geographic areas, outdoor occupations, and skin subtypes. A hi...

Objective: This study aimed to assess the influence of mandibular third molar surgical removal on the periodontal status of adjacent second molars and to investigate the potential impact of the flap design. Methods: A systematic review of the literature, registered in PROSPERO, has been carried out from Pubmed and Scopus databases following PRISMA...

Introduction: The diagnosis of and risks associated with oral potentially malignant disorders (OPMD) have been widely reported, but little has been published on the management of OPMDs in a primary dental care setting. Hospital services face ongoing pressures due to long-term follow-up, with a need for surveillance to be jointly undertaken with pri...

Aims: The aim of this study was to assess knowledge and clinical experience of oral potentially malignant disorders (OPMDs) in undergraduate dental students in six European countries (Croatia, France, Italy, Portugal, Spain, United Kingdom) and assess student attitude and preference to future education on the topic. A secondary aim was to identify...

Oral submucous fibrosis (OSF) is a chronic progressive condition affecting the oral cavity, oropharynx and upper third of the oesophagus. It is a potentially malignant disorder. The authors collated and analysed the existing literature to establish the overall malignant transformation rate (MTR). A retrospective analysis of medical and dental scien...

Objectives: To evaluate the accuracy of two different surgical guides (small extent = single implant and large extent = full arch) fabricated by five additive manufacturing technologies (SLA=Stereolithography, DLP= Digital Light Processing, FDM=Fused Deposition Modeling, SLS=Selective Laser Sintering, Inkjet). Methods: Overall, 72 guides (6 per typ...

When considering regenerative approaches, the efficient creation of a functional vasculature, that can support the metabolic needs of bioengineered tissues, is essential for their survival after implantation. However, it is widely recognized that the post-implantation microenvironment of the engineered tissues is often hypoxic due to insufficient v...

Introduction: Frenectomy is an oral surgical procedure usually performed with a scalpel. Several authors recently reported the interest of laser, as a minimally invasive and efficient alternative tool to perform frenectomy. This study aimed to compare the perioperative management of patients requiring a frenectomy using scalpel versus laser. Materi...

An important component of tissue engineering (TE) is the supporting matrix upon which cells and tissues grow, also known as the scaffold. Scaffolds must easily integrate with host tissue and provide an excellent environment for cell growth and differentiation. Human amniotic membrane (hAM) is considered as a surgical waste without ethical issue, so...

Additive manufacturing (AM), especially powder bed laser sintering (PBLS), has been an increasingly popular field since the 1980s. Direct SLS is particularly challenging with ceramic materials due to their low thermal conductivity, high melting point, and brittle mechanical behaviour. In addition, they require longer processing times for a reliable...

Microbeads consisting of pullulan and dextran supplemented with hydroxyapatite have recently been developed for bone tissue engineering applications. Here, we evaluate the bone formation in two different preclinical models after injection of microbeads reconstituted with either saline buffer or autologous blood. Addition of saline solution or autol...

Thanks to its biological properties, the human amniotic membrane (HAM) combined with a bone substitute could be a single-step surgical alternative to the two-step Masquelet induced membrane (IM) technique for regeneration of critical bone defects. However, no study has directly compared these two membranes. We first designed a 3D-printed scaffold u...

Implants made of ceramics, and more particularly of calcium phosphates (hydroxyapatite: HA, mainly), promoting intimate contact with natural bone are nowadays merging. Addition of copper ions in bio-ceramics is expected to increase the biological compatibilities of bone graft substitutes. Previous works have shown that copper-doped hydroxyapatite (...

Additive manufacturing is a rising field in bone tissue engineering. Additive fabrication offers reproducibility, high precision and rapid manufacture of custom patient-specific scaffolds. The development of appropriate composite materials for biomedical applications is critical to reach clinical application of these novel biomaterials. In this wor...

Introduction: White Sponge Nevus (WSN) is a leukokeratosis characterized by white lesions of the oral mucosa. These lesions are bilateral, thickened and raised compared to the adjacent mucosa. Their aspect are folded and spongy. It is a benign disorder with asymptomatics lesions which often appear during the childhood or the adolescence. The intere...

Introduction: Dilated odontoma is the most severe form of a dens invaginatus, which is a rare dental malformation resulting from an invagination of the enamel organ into the dental papilla before calcification occurs. Observation: A healthy 7-years-old girl was referred to the oral surgery department to remove an impacted odontoma causing a delayed...

The aim of this study was to perform a systematic review on the clinical applications where chorion membrane (CM) and amnion/chorion membrane (ACM) were used for oral tissue regeneration procedures. Selection of articles was carried out by two evaluators in Pubmed and Scopus databases, and Outcomes (PICO) method was used to select the relevant arti...

An amendment to this paper has been published and can be accessed via the original article.

Purpose: The aim of this study was to evaluate and compare bone growth and implant integration in circumferential defects with two commercially available bone substitutes (demineralized bovine bone mineral [DBBM]). Materials and methods: Circumferential defects were created in the mandibles of minipigs (n = 10), and Bone Level Tapered implants (...

Aim This systematic review aimed to evaluate the use of three-dimensional (3D) printed bone models for training, simulating and/or planning interventions in oral and cranio-maxillofacial surgery. Materials and methods A systematic search was conducted using PubMed® and SCOPUS® databases, up to March 10, 2019, by following the Preferred Reporting I...

Introduction: Pterygoid hamulus syndrome (PHS) is a little-known differential diagnosis of orofacial pain. It is characterized by oropharyngeal pain, secondary to inflammatory bursitis of the tensor veli muscle of post-traumatic origin, frequently fostered by an associated hypertrophy of the hamular process. Observation: A 64-year-old female patien...

Hydroxyapatite coatings have been currently used on hip prostheses for their ability to promote faster osseointegration and bone growth. Nevertheless, post-operative infections remain a recurring problem. To overcome this issue, doping with antibacterial elements has become a new trend. In this work, hydroxyapatite coatings elaborated by radio-freq...

Background: Bisphosphonates (BPs) are widely used for the prevention or treatment of osteoporosis. One of the most serious complications associated with BPs is medication-related osteonecrosis of the jaw (MRONJ) but its incidence in patients with osteoporosis is very low ranging from 0.001-0.15%. A major predisposing factor for MRONJ is tooth extr...

Thanks to its biological properties, the human amniotic membrane (HAM) can be used as a barrier membrane for guided bone regeneration (GBR). However, no study has assessed the influence of the preservation method of HAM for this application. This study aimed to establish the most suitable preservation method of HAM for GBR. Fresh (F), cryopreserved...

Introduction : Actuellement 208 millions de personnes consomment du tabac en Europe dont 12 millions en France. 650 000 décès sont attribuables au tabac en Europe et environ 60 000 décès par an sont imputables à cette consommation en France, ce qui en fait la première cause de décès évitable. Tous les acteurs de santé devraient être mobilisés pour...

L’hémangioendothéliome intravasculaire végétant ou tumeur de Masson est une pathologie tumorale bénigne secondaire à la prolifération réactive de cellules endothéliales papillomateuses liées à un thrombus (Masson P., 1923). Il s’agit d’une tumeur vasculaire relativement rare qui représente 2% des tumeurs vasculaires des tissus cutanés et sous cutan...

Les imprimantes 3D existent depuis plusieurs décennies et le principe général de la fabrication additive est de déposer des couches successives de matériau afin dobtenir un volume, à partir d’un modèle défini à l’avance grâce à une interface informatique. Depuis quelques années, ces imprimantes sont utilisées dans le domaine médical : ainsi, les ch...

Résumé Objectifs Rédiger un consensus formalisé sur le management ORL associé à la chirurgie implantaire avec ou sans surélévation du plancher sinusien. Matériels et méthodes La méthodologie suit les règles de la Haute Autorité de santé : « Bases méthodologiques pour l’élaboration de recommandations professionnelles par consensus formalisé ». La...

Introduction: Direct tissue autofluorescence (AF) visualization devices such as VELscope ® are gaining interest to improve early detection of oral potentially malignant disorders (OPMD) and cancers. The main objective of this study was to assess inter-observer reproducibility of incandescent light (IL) and AF observations for OPMD and cancer. Mater...

Objectives: To draw up guidelines for ENT management associated with dental implant surgery with or without sinus lift. Materials and methods: The methodology followed the rules of laid down by the French Health Authority (HAS): "Methodological bases for drawing up professional recommendations by formalized consensus". The chosen method was the...

Current bone tissue engineering strategies are based on porous biocompatible scaffolds seeded with tissue-specific cells. Improvement in rapid prototyping technologies, such as 3D printing, allows fabrication of custom-made 3D scaffolds with high resolution. Our group has developed a new material, made of medical grade poly(lactic-co-glycolic) acid...

Introduction: Cystic maxillary lesions are common. In 1962, Gorlin described a rare cystic form termed the calcifying odontogenic cyst (COC) or Gorlin's cyst. Two cases of this form were treated at Bordeaux University Hospital. Observation: The first case was a 17-year-old patient with mandibular odontoma, which had developed over the previous 6 mo...

Aim This systematic review aimed to analyze the current literature on the usage of three-dimensional (3D) printed bone models for training, simulating and planning interventions in oral and cranio-maxillofacial surgery. Materials and Methods A systematic search was conducted using PubMed® and SCOPUS® databases, up to March 10, 2019, by following th...

Introduction: The prevention and treatment of thromboembolic events is generally based on the prescription of antithrombotics. These drugs are associated with an increased hemorrhagic risk. The procedures for the management of patients under antithrombotic treatment are described in the recommendations of the Société Française de Chirurgie Orale (S...

Layer‐by‐layer (LBL) BioAssembly method was developed to enhance the control of cell distribution within 3D scaffolds for Tissue Engineering applications. The objective of this study was to evaluate in vivo the development of blood vessels within LBL bioassembled membranes seeded with human primary cells, and to compare it to cellularized massive s...

Human amniotic membrane (hAM) is considered as an attractive biological scaffold for tissue engineering. For this application, hAM has been mainly processed using cryopreservation, lyophilization and/or decellularization. However, no study has formally compared the influence of these treatments on hAM properties. The aim of this study was to develo...

In Europe, 29% of individuals identify as smokers, with tobacco use directly related to 650,000 mortalities each year across the continent; roughly 14% of all deaths. Primary care staff at the frontline: nurses, pharmacists, doctors, dentists and other healthcare professionals encounter patients who are regular smokers on a daily basis. By familiar...

Applications in additive manufacturing technologies for bone tissue engineering applications requires the development of new biomaterials formulations. Different three‐dimensional (3D) printing technologies can be used and polymers are commonly employed to fabricate 3D printed bone scaffolds. However, these materials used alone do not possess an ef...

Purpose: Only limited information on the effect of implant surface hydrophilicity in conjunction with simultaneous bone augmentation is available. In this study, new bone growth around implants with a superhydrophilic modSLA (SLActive) and hydrophobic SLA (SLA) surface were compared in circumferential defects when grafted in conjunction with miner...

Development of a microvasculature into tissue-engineered bone substitutes represents a current challenge. Seeding of endothelial cells in an appropriate environment can give rise to a capillary-like network to enhance prevascularization of bone substitutes. Advances in biofabrication techniques, such as bioprinting, could allow to precisely define...

Case report: A 71-year-old patient, with no notable medical-surgical history, was referred for a specialized consultation with Oral Mucosal Pathology for tumefaction on the dorsal side of the tongue. It was a nodular lesion measuring one centimeter long, purplish, and painless. There was nothing found through palpation. Surgical excision with a las...

Introduction: Post-traumatic painful trigeminal neuropathy is a chronic facial pain secondary to trigeminal nerve injury. The treatment of this pain is a therapeutic issue due to the alteration of quality of life that it generates. Observation: A 58-year-old man whose main history of facial trauma has been consulted in the Odontology Department for...

Résumé Un mauvais état bucco-dentaire maternel est associé à certaines complications de la grossesse et prédispose l’enfant à naître à l’apparition de caries précoces. Il est donc important que les femmes enceintes ne négligent pas leur hygiène et santé dentaires. Le pharmacien doit sensibiliser ses patientes à cette prise en charge.

Objectives Since its first use for the reconstruction of tissue defects in the oral cavity in 1985, human amniotic membrane (hAM) has been widely studied in the field of oral surgery. Despite the growing number of publications in this field, there is no systematic review or meta-analysis concerning its clinical applications, outcome assessments, an...

Objective: Polysaccharide-based composite matrices consisting of natural polysaccharides, pullulan and dextran supplemented with hydroxyapatite (Matrix-HA) have recently been developed. The principal objective of this study was to evaluate the capacities of this composite material to promote new bone formation in a sinus lift model in the sheep. S...

By utilizing the ‘stages of change’ approach to smoking cessation an individual's willingness to quit smoking can be ascertained, with provision of knowledge on potential interventions empowering patients to make their own decisions on cessation modalities. Nicotine Replacement Therapy (NRT) can reduce physical cravings, pharmacotherapies can reduc...

In Europe, 29% of individuals identify as smokers, with tobacco use directly related to 650,000 mortalities each year across the continent; roughly 14% of all deaths. From a dental perspective, smoking is directly implicated in numerous chronic, and potentially life-threatening, sequelae which exclusively affect the oral cavity. By familiarizing th...

Introduction Von Willebrand Disease is the most common inherited bleeding disorder. In the general population, 1/8000 patients are affected. Primary hemostasis (platelet adhesion) and coagulation (protection of Factor VIII) are altered. Among several bleeding symptoms, these patients suffer from excessive bleeding of oral mucosa and dental manageme...

Bioprinting as a tissue engineering tool is one of the most promising technologies for overcoming organ shortage. However, the spread of populist articles among on this technology could potentially lead public opinion to idealize its readiness. This bibliometric study aimed to trace the evolution of bioprinting literature over the past decade (i.e....

Bioprinting has emerged as a novel technological approach with the potential to address unsolved questions in the field of tissue engineering. We have recently shown that Laser Assisted Bioprinting (LAB), due to its unprecedented cell printing resolution and precision, is an attractive tool for the in situ printing of a bone substitute. Here, we sh...

Autografts remain the gold standard for orthopedic transplantations. However, to overcome its limitations, bone tissue engineering proposes new strategies. This includes the development of new biomaterials such as synthetic polymers, to serve as scaffold for tissue production. The objective of this present study was to produce poly(lactic) acid (PL...

Introduction: Necrotizing sialometaplasia is an inflammatory, rare and benign pathology, affecting particularly minor salivary glands. Observations: A case of deep and persistent ulceration of the oral floor associated with sensitivity disorders is reported. Three biopsies were realized, each concluding to a nonspecific ulceration. Local treatments...

Observation: An 82-year-old patient treated with the antihistamine ebastine (Kestin®) for allergic rhinitis presented for gingival pain. The diagnosis of mucous membrane pemphigoid was suspected after a positive pinch test. Blood examinations highlighted AC anti-PBGA2, and the gingival biopsy showed an epithelioconjunctival delamination and the pre...

Background: Studies have been conducted on the content and quality of Web-based information for patients who are interested in smoking cessation advice and for health care practitioners regarding the content of e-learning programs about tobacco cessation. However, to the best of our knowledge, there is no such information about the quality of Web-b...

Observation: A 44-year-old patient was deferred for consultation for vesicles and whitish papules a few millimeters in diameter on the tongue. Painful inflammatory attacks and phases of mitigation alternated with each other. The clinical test results were all normal. The pathological examination indicated a lymphangiomatous component caused by infl...

This retrospective study aimed to evaluate the efficacy of clonazepam and amitriptyline in the treatment of burning mouth syndrome (BMS). A single-centre retrospective cohort study was performed among patients diagnosed with BMS. Either clonazepam or amitriptyline was administered. Patients were asked to evaluate their pain using a 10-point verbal...

The conventional tissue engineering is based on seeding of macroporous scaffold on its surface (“top–down” approach). The main limitation is poor cell viability in the middle of the scaffold due to poor diffusion of oxygen and nutrients and insufficient vascularization. Layer-by-Layer (LBL) bioassembly is based on “bottom–up” approach, which consid...

Statement of significance: In current bone tissue engineering approaches the achievement of sufficient angiogenesis, during tissue regeneration, is a major limitation in order to attain full tissue functionality. Recently, we have shown that calcium ions, released by the degradation of calcium phosphate ormoglasses (CaP), are effective angiogenic...

Additive manufacturing covers a number of fashionable technologies that attract the interest of researchers in biomaterials and tissue engineering. Additive manufacturing applied to regenerative medicine covers two main areas: 3D printing and biofabrication. If 3D printing has penetrated the world of regenerative medicine, bioassembly and bioimprin...

Optimal conditions for femtosecond laser bioprinting setup are reported on in terms of numerical aperture and accuracy of focal spot location for different bioinks to deposit without using a metallic absorbing layer.

Introduction: Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) is an autosomal recessive disease defined by two of the following conditions: hypoparathyroidism, adrenocortical failure and chronic mucocutaneous candidiasis. Other autoimmune disorders may be associated with it. Chronic candidiasis is usually the first and most...

Experimental results of femtosecond Laser Assisted Bioprinting (LAB) are reported on. Two set-up, used to print different model bioinks and keratinocytes cells line HaCaT, were studied: first one was using a femtosecond laser with low pulse energy and an absorbing gold layer, whereas the second one used high pulse energy enabling the removal of the...

* Correspondence: Dr. Hugo Oliveira, Inserm, University Bordeaux Segalen, U1026, Tissue Bioengineering, Bordeaux, France, Email1 Dr. Sylvain Catros, Inserm, University Bordeaux Segalen, U1026, Tissue Bioengineering, Bordeaux, France, Email2 Dr. Claudine Boiziau, Inserm, University Bordeaux Segalen, U1026, Tissue Bioengineering, Bordeaux, France, Em...

Tissue engineering of large organs is currently limited by the lack of potent vascularization in vitro . Tissue-engineered bone grafts can be prevascularized in vitro using endothelial cells (ECs). The microvascular network architecture could be controlled by printing ECs following a specific pattern. Using laser-assisted bioprinting, we investigat...

Bioprinting represents a broad spectrum of methods and devices dedicated to micron-scale organization of biological elements. In general, it aims to manipulate cells and biomaterials for the microfabrication of spatially organized three-dimensional structures. These emerging methods can easily be applied to tissue engineering for the fabrication of...

Molluscum contagiosum of the oral mucosa: case report and literature review. Introduction : Mol- luscum contagiosum (MC) is a viral cutaneous infection which is passed on by direct or indirect contact. It com- monly affects children, but oral mucosa manifestations are rare. Observation: The case of a 70-year-old patient, affected by rheumatoid poly...

Statement of significance: In current bone tissue engineering approaches the achievement of sufficient angiogenesis, during tissue regeneration, is a major limitation in order to attain full tissue functionality. Recently, our group has found that calcium ions released by the degradation of calcium phosphate ormoglasses (CaP) are effective angioge...

Introduction : La pycnodysostose est une maladie osseuse autosomique récessive, dont la prévalence est de 1/1,7 million. Elle se caractérise cliniquement par un nanisme, une ostéosclérose diffuse, une acro-ostéolyse des phalanges distales et une fragilité osseuse avec des fractures. La pycnodysostose présente des spécificités maxillo-faciales : une...

Bioprinting station (1) comprising:—a Bioprinting device (4) adapted to deposit a pattern of biological material (2) onto an area of interest (3a) of a substrate (3),—an imaging system (15) adapted to acquire an image of the substrate (3) and to reveal on the acquired image the area of interest (3a) with respect to a remaining part (3b) of the subs...

Introduction: Geographic tongue is usually an asymptomatic disorder. There is no symptomatic treatment evaluated with clinical trials. Our objective was to evaluate the efficiency of tacrolimus in painful Geographic Tongue (GT). Methods: A retrospective descriptive cohort study was performed in the Department of Odontology PQR at the CHU in Bordeau...

Pyostomatitis vegetans: case report and literature review. Introduction: Pyostomatitis vegetans is a rare dermatosis which is manifested by yellowish-white pustules and inflammatory vesiculous lesions of the oral mucosa in the gum, the vestibule, the soft and hard palate, and sometimes the lips. PV is often associated with inflammatory bowel chroni...