70,106 results match your criteria Facial Bone Anatomy


Three-dimensional linear and volumetric computed tomography analysis of the frontal sinus.

Anat Cell Biol 2022 Jun;55(2):142-147

Department of Anatomy, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea.

The frontal sinus is one of the four paranasal sinuses in humans, and knowledge of its anatomy is important when performing surgery involving the frontal bone or sinus. Although many studies have measured the frontal sinus using radiography and computed tomography (CT), few studies have evaluated by using three-dimensional (3D) analysis. The purpose of this study was to analyze the frontal sinus using 3D reconstruction analysis and determine the differences in linear and volumetric measurements between sexes, sides, and ages. Read More

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Radiological relationship of the ethmoid slit with the frontal sinus and the anterior ethmoidal artery and applications to the frontal sinus drillout.

Eur Arch Otorhinolaryngol 2022 Jun 30. Epub 2022 Jun 30.

Department of Otorhinolaryngology and Head and Neck Surgery, CHU de Caen, Avenue de La Côte de Nacre, 14000, Caen, France.

Purpose: To compare two types of CT acquisition parameters: CT scan of the facial bone and CT scan of the sinuses, for studying the ethmoidal slit and its relationship with the frontal sinus and anterior ethmoidal artery.

Materials And Methods: Retrospective study of 145 scans of the sinuses and 79 of the facial bones performed between 2012 and 2016. On each scan, the visibility of the ethmoidal slits, their length, their distance from the ethmoidal artery, and their relationship with the anterior and posterior wall of the frontal sinus were studied. Read More

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Importance of keratinized mucosa around dental implants: Consensus report of group 1 of the DGI/SEPA/Osteology Workshop.

Clin Oral Implants Res 2022 Jun;33 Suppl 23:47-55

International Research Collaborative - Oral Health and Equity, School of Anatomy, Physiology and Human Biology, The University of Western Australia, Crawley, Western Australia, Australia.

Objectives: To assess the literature on (i) the relevance of the presence of a minimum dimension of keratinized peri-implant mucosa (KPIM) to maintain the health and stability of peri-implant tissues, and; (ii) the surgical interventions and grafting materials used for augmenting the dimensions of the KPIM when there is a minimal amount or absence of it.

Material & Methods: Two systematic reviews complemented by expert opinion from workshop group participants served as the basis of the consensus statements, implications for clinical practice and future research, and were approved in plenary session by all workshop participants.

Results: Thirty-four consensus statements, eight implications for clinical practice, and 13 implications for future research were discussed and agreed upon. Read More

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Statistical Shape Model of the Temporal Bone Using Segmentation Propagation.

Otol Neurotol 2022 Jul;43(6):e679-e687

Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland.

Hypothesis: Automated image registration techniques can successfully determine anatomical variation in human temporal bones with statistical shape modeling.

Background: There is a lack of knowledge about inter-patient anatomical variation in the temporal bone. Statistical shape models (SSMs) provide a powerful method for quantifying variation of anatomical structures in medical images but are time-intensive to manually develop. Read More

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Topographic Anatomy of the Medial Labyrinthine Wall: Implications for the Transcanal Endoscopic Approach to the Internal Auditory Canal.

Otol Neurotol 2022 Jul;43(6):e671-e678

Department of Otolaryngology - Head and Neck Surgery, Faculty of Medicine, Ain Shams University, Cairo, Egypt.

Hypothesis: To characterize transcanal endoscopic landmarks of the medial labyrinthine wall and correlate these with anatomical features of the fundus of the internal auditory canal (IAC).

Background: The transcanal transpromontorial approach (TTA) enables minimally invasive access to the IAC. The establishment of a landmark-based dissection technique for the approach is crucial to avoid injury to the facial nerve. Read More

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Autotransplantation: a lost art worthy of revival in the era of implants.

Authors:
Adam P Tow

Gen Dent 2022 Jul-Aug;70(4):28-32

While synthetic implants represent a significant contribution to the advancement of dental medicine, they are associated with high costs, potential complications, and time delays. With autotransplantation, the patient is both donor and recipient of a living tooth; in the ideal case, this procedure transfers a healthy, nonfunctional tooth to a functional position. The aim of this article is to review the literature surrounding autotransplantation and present a successful case with the hope of increasing awareness of this approach to tooth replacement. Read More

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An Overview of Maxillofacial Approaches to Smile Design.

Dent Clin North Am 2022 Jul 31;66(3):343-360. Epub 2022 May 31.

Oral and Maxillofacial Surgery Department, University of Louisville, Louisville, KY, USA.

The oral and maxillofacial surgeon (OMS) has the knowledge and skills to make drastic skeletal changes in favor of a more cosmetic smile. OMS can alter intraoral and extraoral soft tissues to make subtle or significant changes in facial cosmesis. This article provides an overview of the scope of the OMS in smile design. Read More

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Inferior Alveolar Nerve Lateralization Surgery for Implant Installation in Atrophic Posterior Mandible With Accessory Mental Foramen: A Challenge for the Usual Technique.

J Craniofac Surg 2022 May;33(3):e255-e257

Department of Oral and Maxillofacial Surgery, Hospital Regional de Osasco SUS, Osasco, Brazil.

Abstract: Implantology allows edentulous patients to smile and chew with confidence. However, the atrophy at posterior region of the mandible is still a challenge due the presence of the inferior alveolar nerve (iAN). The options of restoration with oral implants in this area with great atrophies are few and hazardous. Read More

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Hyperostosis in orbital rhabdomyosarcoma.

BMJ Case Rep 2022 Jun 20;15(6). Epub 2022 Jun 20.

Department of Ophthalmology and Visual Sciences, Philippine General Hospital, Manila, Philippines.

Rhabdomyosarcoma is the most common soft-tissue sarcoma in paediatric patients and may arise as a primary orbital neoplasm. Imaging studies show a unilateral solitary orbital lesion. With larger tumours, erosion of the adjacent orbital walls is a common accompanying bony change. Read More

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Periodontology Part 2: Localised Juvenile Spongiotic Gingival Hyperplasia: histopathological and clinical features.

Eur J Paediatr Dent 2022 Jun;23(2):163-165

Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, Unit of Pediatric dentistry, University of Pisa, Pisa, Italy.

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ZYGOMATIC IMPLANTS MAY IMPROVE QUALITY OF LIFE AND SATISFACTION IN PATIENTS WITH ATROPHIED MAXILLA.

J Evid Based Dent Pract 2022 06 31;22(2):101729. Epub 2022 Mar 31.

Article Title And Bibliographic Information: Alberto J, Mariano S, Guerrero-s Y, Pato-mourelo J. Evaluation of Quality of Life And Satisfaction in Patients with Fixed Prostheses on Zygomatic Implants Compared with the All-on-Four Concept: A Prospective Randomized Clinical Study. Int J Environ Res Public Heal. Read More

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The effect of implants loaded with stem cells from human exfoliated deciduous teeth on early osseointegration in a canine model.

BMC Oral Health 2022 Jun 17;22(1):238. Epub 2022 Jun 17.

Laboratory of Biomaterials and Biomechanics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, Capital Medical University, Beijing, China.

Background: This in vivo experimental study investigated the effect of stem cells from human exfoliated deciduous teeth (SHEDs) on early osteogenesis around implants.

Methods: In four healthy adult male Beagle dogs, the left mandibular received implants and SHED as the experimental group, and the right mandibular received implants and phosphate-buffered saline as the control group. The Beagle dogs were randomly divided into groups A and B, which were sacrificed at 2 and 4 weeks after implantation. Read More

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Surgical and prosthodontics management of a perforating giant radicular cyst in anterior maxilla: A case report.

J Pak Med Assoc 2022 May;72(5):965-968

Department of Surgery, Aga Khan University Hospital, Karachi.

Radicular cyst is the most common type of odontogenic cyst associated with the apex of non-vital teeth. The lining of the radicular cyst usually arises from the epithelial rests of Malassez. These cyst usually persists even after the elimination of microbial load from the root canals. Read More

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Analysis of the fluid contents of simple bone cyst in the mandible.

Sci Rep 2022 Jun 16;12(1):10083. Epub 2022 Jun 16.

Department of Oral and Maxillofacial Radiology, School of Dentistry, IHBR, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940, South Korea.

Description of simple bone cyst (SBC) content has been controversial. This study aimed to assess and give a clearer picture of the SBC cavity contents. Between 2014 and 2016, 19 patients with SBC verified by histopathological examination were included in this study. Read More

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Decoronation-induced infected alveolar socket defect rat model for ridge preservation.

Sci Rep 2022 Jun 15;12(1):9940. Epub 2022 Jun 15.

Department of Dentistry, College of Medicine, National Taiwan University Hospital, No. 1, Chang-Te Street, Taipei, 10048, Taiwan.

Current rat alveolar ridge preservation models have not been well standardized. In this study, we proposed decoronation-induced infected alveolar socket model of rat. The bilateral maxillary first molars (M1) of twenty-four rats were decoronized or extracted. Read More

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Survival of conventional dental implants in the edentulous atrophic maxilla in combination with zygomatic implants: a 20-year retrospective study.

Int J Implant Dent 2022 Jun 15;8(1):27. Epub 2022 Jun 15.

Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.

Purpose: Implant-supported prosthetic rehabilitation in the resorbed maxilla is a great challenge. The aim of this study was to determine the survival rate of conventional anterior implants placed in combination with zygomatic implants according to the Brånemark technique, and to identify risk factors for implant failure.

Methods: We collected data retrospectively from 72 consecutive patients who received treatment from 1998 to 2018 at our center, according to Brånemark's original technique. Read More

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Variability of the retrotympanum and its association with mastoid pneumatization in cholesteatoma patients.

Eur Arch Otorhinolaryngol 2022 Jun 13. Epub 2022 Jun 13.

Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital and University of Bern, Freiburgstrasse 15, 3010, Bern, Switzerland.

Purpose: This study aimed to investigate the variability of the retrotympanum in patients undergoing surgical treatment for cholesteatoma.

Methods: We included 59 ears of patients undergoing middle ear surgery for cholesteatoma who had preoperative computed tomography scans. A retrospective analysis of the medical records was conducted. Read More

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Oval Type of Human Mandibular Condyle in Panoramic Radiographs of a Tertiary Care Centre: A Descriptive Cross-sectional Study.

JNMA J Nepal Med Assoc 2022 Jun 1;60(250):525-528. Epub 2022 Jun 1.

Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences, Mangalore, Karnataka, India.

Introduction: Mandibular condyle is a prominent structure in the mandible, which forms the temporomandibular joint. An oval-shaped condyle is considered to be present with a normal temporomandibular joint and any morphological variation of the condyle is assumed to be pathologic in temporomandibular disorders. The aim of the study was to find out the prevalence of oval shaped mandibular condyle among orthopantomogram radiographs of patients visiting the tertiary care centre. Read More

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Innovation of new clinical concepts in the correction of facial deformity of patients with post-traumatic condylar hyperplasia condition.

Authors:
Sabah Hassan

J Popul Ther Clin Pharmacol 2022 1;29(1):e82-e86. Epub 2022 Mar 1.

Al Nukhba University College, Baghdad, Iraq;

Post traumatic condylar hyperplasia condition is an increase in the total number of cells due to increased activity, which exist only as long as the activity or the stimulus is applied. When it is removed, the tissue returns to the normal state; however, a secondary structural alteration in the general architecture due to accompanying degeneration may render a complete return to the normal state impossible. Mandibular asymmetry following condylar injury is poorly documented as a cause of facial asymmetry. Read More

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Micro-computed tomography evaluation of bone architecture in various forms of unilateral condylar hyperplasia.

Int J Oral Maxillofac Surg 2022 Jun 6. Epub 2022 Jun 6.

Department of Oral and Maxillofacial Surgery, 1st Faculty of Medicine and General University Hospital Prague, Praha, Czech Republic.

Condylar hyperplasia is one of the causes of facial asymmetry and malocclusion, characterized by enlargement of the lower jaw due to excessive condyle growth activity. The aim of this study was to use micro-computed tomography (micro-CT) to evaluate the bone architecture of the condylar head and determine whether there are differences between patients with various forms of unilateral condylar hyperplasia (UCH): hemimandibular hyperplasia, elongation, and mixed form. The cohort consisted of 28 patients with a mean age of 21. Read More

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Adamantinoma-Like Ewing Sarcoma of the Mandible Evaluated on 18F-FDG PET/CT.

Clin Nucl Med 2022 Jul 5;47(7):635-637. Epub 2022 Apr 5.

From the Departments of Radiology.

Abstract: Ewing sarcoma is the second most common primary bone tumor in children. Typical Ewing sarcoma most frequently occurs in long bones and within the pelvis. ALES (adamantinoma-like Ewing sarcoma) is a rare subtype of Ewing sarcoma that is characterized by epithelial differentiation in addition to small round blue cells. Read More

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18F-FDG PET/CT in Primary Intraosseous Squamous Cell Carcinoma.

Clin Nucl Med 2022 Jul 5;47(7):632-634. Epub 2022 Apr 5.

From the Department of Molecular Imaging, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao City, Shandong Province, China.

Abstract: Primary intraosseous squamous cell carcinoma is a highly malignant but rare tumor within jaws. We reported the 18F-FDG PET/CT findings of primary intraosseous squamous cell carcinoma of the mandible in a 42-year-old man. 18F-FDG PET/CT identified a cystic lesion in the mandible with irregular annular uptake of 18F-FDG, which has been confirmed as primary intraosseous squamous cell carcinoma pathologically. Read More

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Agenesis of maxillary lateral incisors: diagnosis and treatment options.

Dental Press J Orthod 2022 6;27(1):e22spe1. Epub 2022 Jun 6.

Private practice (Madrid, Spain).

Introduction: There are different possibilities of orthodontic planning for cases with congenital absence of maxillary lateral incisors. This subject divides the opinion of orthodontists and oral rehabilitation clinicians, due to the advantages and disadvantages of each treatment option, which may involve opening spaces for future implants and/or prosthetic restorations, or closing the spaces by positioning the maxillary canines in the place of lateral incisors. The correct diagnosis and careful evaluation of each patient allow to determine the best therapeutic approach. Read More

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Squamation and scale morphology at the root of jawed vertebrates.

Authors:
Yajing Wang Min Zhu

Elife 2022 06 8;11. Epub 2022 Jun 8.

School of Earth Sciences and Engineering, Nanjing University, Najing, China.

Placoderms, as the earliest branching jawed vertebrates, are crucial to understanding how the characters of crown gnathostomes comprising Chondrichthyes and Osteichthyes evolved from their stem relatives. Despite the growing knowledge of the anatomy and diversity of placoderms over the past decade, the dermal scales of placoderms are predominantly known from isolated material, either morphologically or histologically, resulting in their squamation being poorly understood. Here we provide a comprehensive description of the squamation and scale morphology of a primitive taxon of Antiarcha (a clade at the root of jawed vertebrates), , based on the virtual restoration of an articulated specimen by using X-ray computed tomography. Read More

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Unilateral agenesis of permanent superior canine in familial peg-shaped lateral incisors: rare case report and literature review.

Rom J Morphol Embryol 2021 Oct-Dec;62(4):1045-1050

Department of Removable Prosthodontics, Faculty of Dentistry, Department of Dental Techniques, Faculty of Midwifery and Nursing, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania;

Agenesis of permanent maxillary and mandibular canines is very rare; one to all four can be missing, isolated or in association with other missing teeth or with dental morphology abnormalities. Such cases can present functional, esthetic, and psychological problems, since the canine's role in functional occlusion and in obtaining an aesthetic smile is crucial. Frequently, the canine's absence from the arch is caused by impaction; its congenital absence is extremely rare in patients with no associated syndrome. Read More

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[Surgical Anatomy of the Cavernous Sinus, Parasellar Region, and Orbit].

Authors:
Yoshihiro Natori

No Shinkei Geka 2022 May;50(3):508-515

Department of Neurosurgery, Iizuka Hospital.

The cavernous sinus, para-sellar region, and orbit have intricately intertwined cranial nerves, blood vessels, and dura mater. In surgery, anatomical understanding is very important. Recognizing the location(depth)of the cranial nerves running on the lateral and upper wall of the cavernous sinus is vital and is directly linked to postoperative complications. Read More

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Genetic Interaction of and Shapes Postnatal Craniofacial Bone.

J Dev Biol 2022 May 11;10(2). Epub 2022 May 11.

Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA.

Ciliopathies are genetic syndromes that link skeletal dysplasias to the dysfunction of primary cilia. Primary cilia are sensory organelles synthesized by intraflagellar transport (IFT)-A and B complexes, which traffic protein cargo along a microtubular core. We have reported that the deletion of the IFT-A gene, , together with a null allele of its paralog, causes a small skeleton with a small mandible or micrognathia in juvenile mice. Read More

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An Unusual Bifurcated Proximal Facial Nerve Found During Excision of a Vestibular Schwannoma: Clinical Imaging with a Surgical Video.

World Neurosurg 2022 May 26;164:253-255. Epub 2022 May 26.

Department of Neurological Surgery, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, USA. Electronic address:

Carefully preserving facial nerve function is crucial when using the translabyrinthine approach for vestibular schwannoma surgery. Nerve preservation can only be accomplished by employing rigorous surgical methods and having a thorough understanding of the relevant anatomy, including any variations. Anatomical variations in the path of the facial nerve are infrequent but are most commonly encountered in association with congenital abnormalities of the temporal bone or ossicles. Read More

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Alveolar bone response distal to applied orthodontic forces in ovariectomized rats.

J Musculoskelet Neuronal Interact 2022 06;22(2):235-241

Laboratory for Research of the Musculoskeletal System, KAT Hospital, School of Medicine, National & Kapodistrian University of Athens, Kifissia, Greece.

Objectives: The aim of this study was to investigate the effect of the application of orthodontic tooth forces on the alveolar bone distal to the loaded teeth, in ovariectomized female rats.

Methods: Twenty-four eight-month-old Wistar rats were divided into one group ovariectomized at the age of six months and one control. An orthodontic appliance delivering a mesial traction force of 60 gr* was placed on the right maxillary 1 molar of all animals for 14 days. Read More

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[The use of magnetic sensory system for mandibular movement patterns recording in patients after TMJ reconstruction].

Stomatologiia (Mosk) 2022 ;101(3):44-48

Central Research Institute of Dental and Maxillofacial Surgery, Moscow, Russia.

Objective: The aim of this study was to record mandibular kinematics in patients after total TMJ endoprosthesis using a magnetic sensory system.

Material And Methods: The movement of the mandibular was examined in 10 patients who underwent TMJ reconstruction using total endoprostheses. The condylar range of motion, the angle of the transversal condylar inclination (TCI), the speed of joint movement (max S) and the stability distance between the position at the beginning of movement and at the end (Start/end) of TMJ prostheses and native joints were measured 1 week before surgery (T0) and 12 months after (T1). Read More

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