Mandibular Titanium Miniplates Change the Biomechanical Behaviour of the Mandible in the Case of Facial Trauma: A Three-Dimensional Finite Element Analysis.

Our study aimed to compare the biomechanical behaviour of mandibles with or without titanium miniplates when subjected to an impact after bone healing using a finite element model (FEM) of the human mandible. We simulated mandibular trauma on an FEM of a human mandible carrying or not two parasymphyseal miniplates and applying a concentrated force of 2000 N to four different areas, including the insertion area, the area straddling the edge of the miniplates and the adjacent bone, at a distance from the miniplates on the symphysis, and on the basilar border of the mandible below the miniplates. Then, we compared the Von Mises stress distributions between the two models.

Effect of LED photobiomodulation on dental implant osseointegration: An in vivo study.

Background: Photobiomodulation (PBM) may be prescribed after dental surgery to accelerate tissue healing and improve implant stability. The objective of this study is to evaluate the efficiency of LED-PBM on the dental implant osseointegration.

Methods: A total of 48 implants (Kontact) were inserted in 8 Yucatan minipigs (6 implants per minipig) divided into 2 groups (test and control).

Effect of bone density on the survival of 407 sandblasted and acid-etched dental implants: A retrospective multicenter study.

Background: This study evaluated the success and survival rate of sandblasted and acid-etched dental implants according to the patient's bone quality.

Methods: A multicenter retrospective study was conducted in five clinical centers between 2016 and March 2019. A total of 407 implants (KONTACT S, Biotech Dental, France) placed in 229 patients (61.

Experimental analysis and numerical fatigue life prediction of 3D-Printed osteosynthesis plates.

The trend towards patient-specific medical orthopedic prostheses has led to an increased use of 3D-printed surgical implants made of Ti6Al4V. However, uncertainties arise due to varying printing parameters, particularly with regards to the fatigue limit. This necessitates time-consuming and costly experimental validation before they can be safely used on patients.

Surgical techniques used in chin feminization: Literature review and knowledge update.

Genioplasty is commonly performed as part of facial feminization surgery. Commonly addressed areas in facial feminization surgery include the chin. According to some authors, 100% of patients request genioplasty surgery in order to feminize their faces.

Do mandibular titanium miniplates affect the biomechanical behaviour of the mandible? A preliminary experimental study.

Introduction: Whether to conserve or remove titanium miniplates after rigid internal fixation of mandibular fractures still remains controversial. Miniplates could affect the biomechanical behaviour of the mandible in case of trauma, and therefore cause more complex fractures.

Materials And Methods: An experimental study, consisting in simulating a mandibular trauma, was designed in order to compare the fractures caused by an impact on the mandible in the presence or absence of an internal fixation.

Do mandibular miniplates increase the risk of complex fracture in facial trauma recurrence? Case series.

Whether to conserve or remove miniplates, widely used in oral and maxillofacial surgery, has not been agreed on in the literature. Complications such as pain, infection, and screw exposure or loosening have already been largely described. We present the consequences of a trauma recurrence on a mandible with miniplates.

Is minor surgery safe during the COVID-19 pandemic? A multi-disciplinary study.

Background: To assess the risk of postoperative SARS-CoV-2 infection during the COVID-19 pandemic.

Methods: The CONCEPTION study was a cohort, multidisciplinary study conducted at Conception University Hospital, in France, from March 17th to May 11th, 2020. Our study included all adult patients who underwent minor surgery in one of the seven surgical departments of our hospital: urology, digestive, plastic, gynecological, otolaryngology, gynecology or maxillofacial surgery.

The association of Le Fort midfacial fractures with frontobasal injuries: a 17-year review of 125 cases, reflections on biomechanics, classifications and treatment.

The frequency of midface and frontobasal fractures has increased over the past 40 years despite the improvement and stringent regulation implemented on modern safety equipment (belts, helmets…). This observation might be correlated with the progress of radiodiagnosis tools. Literature was reviewed according to Prisma guidelines.

Salivary Gland Lithiasis Recurrence After Minimally-Invasive Surgery: Incidence, Risk Factors and Prevention.

Objective: The aim of this study was to evaluate the recurrence rate of lithiasis following minimally invasive surgery to identify risk factors and mechanisms for recurrence of salivary gland lithiasis.

Study Design: Retrospective case series.

Methods: A retrospective study was conducted including all patients treated for salivary gland lithiasis by minimally invasive surgery, such as sialendoscopy, intracorporeal lithotripsy, extracorporeal lithotripsy, transoral approach, and combined approach in our Department.

Salivary side effects after radioiodine treatment for differentiated papillary thyroid carcinoma: Long-term study.

Background: Although many studies focus on short-term side effects of radioiodine therapy, almost none studied long-term side effects. We assessed radioiodine long-term salivary side effects after radioiodine treatment for differentiated papillary thyroid carcinoma and compared it to short-term morbidity within the same population.

Methods: A standardized self-administrated questionnaire was submitted in 2019 by patients treated with radioiodine between January 2011 and December 2012.

Standard and Customized Alloplastic Facial Implants Refining Orthognathic Surgery: Outcome Evaluation.

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.

Sialendoscopy-Assisted Duct Transposition in Ectopic Accessory Parotid Gland: Case Report and Surgical Management.

An ectopic accessory parotid gland with a congenital cheek fistula is a rare congenital condition that belongs to the oculoauriculovertebral spectrum. The clinical symptom is generally a cheek fistula. Surgical treatment can include either the removal of the ectopic gland or a duct transposition.

Could mastication modify the shape of the orbit? A scannographic study in humans.

Purpose: Since prehistory, changes of the facial skeleton have been related to the modification of diet. More recent studies have shown changes in the morphology of the mandible and maxilla due to variations of strain during mastication. The temporal muscle (TM) is a strong masticatory muscle, with its insertions extending through the temporal fossa.

Bioactive glass 45S5 ceramic for alveolar cleft reconstruction, about 58 cases.

Background: Secondary alveolar bone grafting in patients with clefts lip and palate is usually performed with iliac crest bone harvesting, however using bone substitute allow to avoid harvesting morbidity. The purpose of our study was to assess if the use of a bioactive glass ceramic is an acceptable alternative to iliac crest bone harvesting in alveolar clefts treatment.

Methods: A prospective study including all patients who have benefited of alveolar grafting by GlassBONE™ (Noraker, France), a synthetic resorbable bioactive glass 45S5 ceramic was conducted.

Is Preoperative Maintenance of the Curve of Spee Associated With an Increase of Facial Height in Class II Short Face Orthognathic Patients? A Never Answered Dogmatic Question.

Purpose: To determine the association of maintaining the curve of Spee (COS) before surgery with post-treatment facial height in patients with Class II short face syndrome undergoing combined orthodontic and orthognathic treatment.

Materials And Methods: In this retrospective cohort study, the clinical and radiologic data of all patients with Class II short face syndrome who underwent combined orthodontic and orthognathic treatment were reviewed. The primary outcome variables were 1) preoperative COS and 2) post-treatment facial height.

Orbital Reconstruction by Patient-Specific Implant Printed in Porous Titanium: A Retrospective Case Series of 12 Patients.

Purpose: The purpose of this study was to evaluate the orbital patient-specific implant (PSI) directly printed in porous titanium for the reconstruction of complex orbital bone defects in a series of 12 patients.

Patients And Methods: The authors designed and implemented a case series. The sample consisted of patients with unilateral complex orbital bone loss.

Cystinuria: One Possible Reason for Kidney and Salivary Gland Lithiasis Relationship.

Salivary gland lithiasis affects 1 to 2% of adults. The submandibular glands are concerned in 87% of cases. An association between kidney and salivary lithiases, although often mentioned, has rarely been observed.

Is Atypical Swallowing Associated With Relapse in Orthognathic Patients? A Retrospective Study of 256 Patients.

Purpose: To determine the association of atypical swallowing (AS) with relapse in patients undergoing combined orthodontic and orthognathic treatment.

Materials And Methods: In this retrospective cohort study, the clinical data of all patients who underwent combined surgical and orthodontic treatment from 1998 through 2015 at the University Hospital of Geneva (Geneva, Switzerland) were reviewed. The primary outcome variables were 1) AS and 2) post-treatment relapse.

Salivary Calculi Removal by Minimally Invasive Techniques: A Decision Tree Based on the Diameter of the Calculi and Their Position in the Excretory Duct.

Purpose: To suggest a decision tree for the choice of the best minimally invasive technique to treat submandibular and parotid calculi, according to the diameter of the calculi and their position in the excretory duct.

Materials And Methods: Submandibular and parotid ducts can both be divided into thirds, delineated by easily recognizable landmarks. The diameter of calculi is schematically classified into 1 of these 3 categories: floating, slightly impacted, or largely impacted.