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A Rampello, P Papi, G Pompa, A Rampello, A Polimeni, C Di Paolo
OBJECTIVE: The aim of this study was to evaluate functionality and clinical application of a novel immediate device in the treatment of temporomandibular disorders (TMDs). To address the research purpose, authors developed and implemented a randomized control clinical trial. PATIENTS AND METHODS: Eighty patients were enrolled in this study and were randomly divided into two subgroups based on the treatment applied: patient group (PG) and control group (CG). The CG was not subjected to any kind of treatment, even placebo, in order to be able to assess the spontaneous development of the pathology over time...
March 2018: European Review for Medical and Pharmacological Sciences
Min Wang, Xuerui Ren, Yihuai Pan
OBJECTIVES: To analyze the incidence and distribution of branch canals in mandibular anterior teeth. MATERIALS AND METHODS: Three hundred mandibular anterior teeth, comprising 100 central incisors, 100 lateral incisors, and 100 canines, were scanned using a micro-computed tomography (micro-CT) system. Three-dimensional (3-D) visualization reconstruction of the root canal system and its branch canals was performed on each specimen. Data regarding the number of branch canals, the distance from the anatomical apex to the branch canal, and the orientation of each branch orifice were collected and analyzed...
March 22, 2018: Clinical Oral Investigations
Buket Ayna, Emrah Ayna, Sema Çelenk, Emine Göncü Başaran, Berivan Dündar Yılmaz, İbrahim Halil Tacir, Mehmet Cudi Tuncer
AIM: To compare the efficacy of resin composite restorations, retained with either polyethylene or zirconia-rich glass fiber posts. METHODS: Sixty-two single rooted maxillary and mandibular central incisor teeth in forty-four patients (15 males and 29 females; age range 15-32 years) were restored either with an ultrahigh molecular weight polyethylene (UHMWP) fiber post (Bondable Reinforcement Ribbon, DENSE, Ribbond, Seattle, WA, United States) or a zircon-rich glass fiber post (Snowpost, Lot H 040; Carbotech, Ganges, France)...
March 16, 2018: World Journal of Clinical Cases
Seung-Hak Baek, Yoon-Hee Park, Jee Hyeok Chung, Sukwha Kim, Jin-Young Choi
The purpose of this case report was to introduce the concept of orthodontic and orthopedic treatment for a growing patient with Tessier number 0 cleft. A 5-year-old boy patient with Tessier number 0 cleft presented congenitally missing maxillary central incisors (MXCI), a bony defect at the premaxilla, a constricted maxillary arch, an anterior openbite, and maxillary hypoplasia. His treatment was divided into three stages: management of the bony defect at the premaxilla and the congenitally missing MXCIs using a fan-type expansion plate, iliac bone grafting, and eruption guidance of the maxillary lateral incisors into the graft area for substitution of MXCIs; management of the maxillary hypoplasia using sequential facemask therapy with conventional and skeletal anchorage; and management of the remaining occlusal problems using fixed orthodontic treatment...
March 2018: Korean Journal of Orthodontics
Min-Hee Oh, Sung-Ja Kang, Jin-Hyoung Cho
Objective: This retrospective study compared the three-dimensional (3D) structure of mandibular condyles between adults with and without facial asymmetry, and whether it influences menton deviation. Methods: Sixty adult patients were classified into symmetry and asymmetry groups based on the menton deviation on postero-anterior radiographs. The right/left differences of 3D measurements were compared between the two groups, and measurements were compared separately on the right and left sides...
March 2018: Korean Journal of Orthodontics
Eva Svandova, Barbora Vesela, Abigail S Tucker, Eva Matalova
Caspases are well known proteases in the context of inflammation and apoptosis. Recently, novel roles of pro-apoptotic caspases have been reported, including findings related to the development of hard tissues. To further investigate these emerging functions of pro-apoptotic caspases, the in vivo localisation of key pro-apoptotic caspases (-3,-6,-7,-8, and -9) was assessed, concentrating on the development of two neighbouring hard tissues, cells participating in odontogenesis (represented by the first mouse molar) and intramembranous osteogenesis (mandibular/alveolar bone)...
2018: Frontiers in Physiology
Arvind Krishnamurthy
Angiosarcoma is a malignant vascular tumor derived from the mesenchymal cells which have undergone an angioblastic differentiation. About half of the angiosarcomas are reported to localize in the skin and soft tissues of the head and neck, i.e., found predominantly to arise from the scalp and face. Angiosarcomas rarely involve the skeletal system, wherein they generally have a tendency for multicentricity. Primary bony angiosarcoma accounts for about 6% of all the angiosarcomas and about 1.4% of all the primary bony sarcomas...
March 2018: Indian Journal of Surgical Oncology
Bogna Stawarczyk, Nina Lümkemann, Marlis Eichberger, Timea Wimmer
The purpose of this investigation was to analyze the accuracy of digitally fabricated wax trial dentures and conventionally finalized complete dentures in comparison to a surface tessellation language (STL)-dataset. A generated data set for the denture bases and the tooth sockets was used, converted into STL-format, and saved as reference. Five mandibular and 5 maxillary denture bases were milled from wax blanks and denture teeth were waxed into their tooth sockets. Each complete denture was checked on fit, waxed onto the dental cast, and digitized using an optical laboratory scanning device...
December 19, 2017: Dent J (Basel)
Koichi Yoshino, Koji Ito, Masahiko Kuroda, Naoki Sugihara
Diagnosing vertical root fracture (VRF) is difficult. Here, we retrospectively investigated the duration from initial symptoms to a definite diagnosis of VRF in dental offices. Data were collected on patients with VRF between July 2013 and June 2015. Initial symptoms were ascertained from clinical records. The focus was on the maxillary second premolars and mesial roots of the mandibular first molars, where VRF is most frequent. All VRF in the bilateral dentition was analyzed. Only cases in which the buccal-lingual plane of the root was fractured were included...
2018: Bulletin of Tokyo Dental College
Svitlana Veniaminivna Kolomiiets, Kristina Oleksandrivna Udaltsova, Tetiana Andriivna Khmil, Alina Mykolaiivna Yelinska, Olena Anatoliivna Pisarenko, Viktoriya Ihorivna Shynkevych
Sialolithiasis is one of the most common and extensively obstructive disorders of the major salivary glands. Here, we report 3 cases of sialolithiasis in the submandibular salivary gland showing symptomatic similarities to other dental and non-dental disorders of the maxillofacial area. How the various clinical features of this condition and findings on 3D-CT may lead to a misdiagnosis are also discussed. In the first case, that of a 45-year-old woman, a final diagnosis of a non-radiopaque submandibular sialolith allowed the initially indicated surgical extraction of a malerupted and semi-impacted right mandibular 3rd molar to be abandoned...
2018: Bulletin of Tokyo Dental College
Hodaka Sasaki, Tomoki Hirano, Syuntaro Nomoto, Yasushi Nishii, Yasutomo Yajima
Here, we report a case of dental implant treatment involving computer-assisted surgery for bilateral agenesis of the maxillary lateral incisors. The patient was a 39-year-old woman with the chief complaint of functional and esthetic disturbance due to maxillary and mandibular malocclusion. The treatment plan comprised non-extraction comprehensive orthodontic treatment and prosthodontic treatment for space due to the absence of bilateral maxillary lateral incisors. A preliminary examination revealed that the mesiodistal spaces left by the absent bilateral maxillary lateral incisors were too narrow for implant placement (right, 5...
2018: Bulletin of Tokyo Dental College
Taiki Suzuki, Ryo Sekiya, Yuji Hamada, Miho Takahashi, Kazunari Karakida, Haruo Sakamoto
Here, we report a case of fatal bleeding in conjunction with mandibular medicationrelated osteonecrosis of the jaw (MRONJ). A 75-year-old Japanese man was referred to our department with osteonecrosis of the jaw due to bisphosphonate (BP) for multiple bone metastases from prostate cancer. Aggressive surgical intervention was ruled out due to a poor prognosis in terms of life expectancy. Death occurred due to hemorrhagic shock resulting from massive oral bleeding caused by necrosis of the mandible. Numerous reports have suggested that jaw necrosis is induced not only by BP, but also RANKL antibody, steroids, and molecularly-targeted agents...
2018: Bulletin of Tokyo Dental College
Matteo A Lucchetti, Verena Kilchenmann, Gaetan Glauser, Christophe Praz, Christina Kast
The pollen of many plants contains toxic secondary compounds, sometimes in concentrations higher than those found in the flowers or leaves. The ecological significance of these compounds remains unclear, and their impact on bees is largely unexplored. Here, we studied the impact of pyrrolizidine alkaloids (PAs) found in the pollen of Echium vulgare on honeybee adults and larvae. Echimidine, a PA present in E. vulgare pollen, was isolated and added to the honeybee diets in order to perform toxicity bioassays...
March 28, 2018: Proceedings. Biological Sciences
Jinfeng Yu, Yun Hu, Mingna Huang, Jun Chen, Xiaoqian Ding, Leilei Zheng
OBJECTIVE: To evaluate the skeletal and dental characteristics in skeletal class III patients with facial asymmetry and to analyse the relationships among various parts of the stomatognathic system to provide a theoretical basis for clinical practice. METHODS: Asymmetric cone-beam computed tomography data acquired from 56 patients were evaluated using Mimics 10.0 and 3-Matic software. Skeletal and dental measurements were performed to assess the three-dimensional differences between two sides...
March 15, 2018: Journal of X-ray Science and Technology
Risa Usumi-Fujita, Koichi Nakakuki, Koichi Fujita, Machiko Kosugi, Ikuo Yonemitus, Eiji Fukuyama, Takashi Ono
Facial asymmetry can be caused by unilateral condylar hyperplasia. In such cases, it may be difficult to achieve symmetry since there is dentoalveolar compensation on the affected side, and the occlusal cant does not correspond to the frontal mandibular deviation. In the case presented, surgical orthodontic treatment and orthognathic surgery planning was accomplished for a patient with facial asymmetry due to condylar hyperplasia. The surgical plan was devised with particular attention to the severe dentoalveolar compensation...
March 21, 2018: Angle Orthodontist
Wei An, Aisaiti Ainiwaer, Patiguli Wusiman, Gulibusitan Ali, Adili Moming
PURPOSE: The study proposed to determine the superiority between different fixation methods in the mandibular angle fractures (MAFs) and to evaluate best option for surgeon and patient. METHODS: A systematic review was conducted according to PRISMA guidelines, examining Medline-Ovid, Embase, and Pubmed databases. The quality of studies was assessed, and the odds risk (OR) with its corresponding 95% confidence interval (CI) was assessed to measure the effect size...
March 20, 2018: Journal of Craniofacial Surgery
Massimo Galli, Andrea Papini, Barbara Buffoli, Marco Ferrari, Mauro Labanca, Rita Rezzani, Mario Migliario, Alberta Greco Lucchina, Luigi F Rodella
The cranial portion of the vertebral segment together with the atlanto-occipital joint represents a very complex area. Since this system could be influenced by different atlas and mandibular position, the aim of this work was to assess atlanto-axial and mandibular rotation. Scanora 3-dimensional cone bean computed tomography images from 205 patients without signs or symptoms of temporomandibular disorder were evaluated. Using a digitalized images analyzer, the axial rotations of atlas and mandible rotation were calculated, measuring the angle with respect to the frontal plane...
March 20, 2018: Journal of Craniofacial Surgery
Sebastian Krohn, Phillipp Brockmeyer, Dietmar Kubein-Meesenburg, Christian Kirschneck, Ralf Buergers
BACKGROUND: Elongated styloid processes may display clinical signs that can easily be confused with symptoms associated with temporomandibular disorders (TMD). Thus, the present study aimed to investigate alterations of the styloid process in patients with TMD. METHODS: Temporomandibular joint (TMJ) X-ray images of 192 patients with RDC/TMD diagnoses were examined retrospectively. On each side, the styloid process and mandibular ramus were evaluated regarding length as well as sagittal angulation...
March 17, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
Y-S Han, H Lee, B-M Seo
Our aim was to identify the positional changes of the inferior alveolar neurovascular bundle and evaluate the relocation of the displaced mandibular canal after enucleation of a cyst. Seventy patients (72 sites) who had had cysts enucleated were divided into three groups based on the degree of encroachment of the cystic lesion into the mandibular canal and whether a bone graft had been inserted after the cyst had been enucleated. The mean (range) of patients' ages was 45 (18-75) years, and there were 29 male and 41 female patients...
March 17, 2018: British Journal of Oral & Maxillofacial Surgery
Giorgio Gastaldi, Pietro Felice, Valeria Pistilli, Carlo Barausse, Daniela Rita Ippolito, Marco Esposito
PURPOSE: To evaluate whether 5.0 × 5.0 mm dental implants with a novel nanostructured calcium-incorporated titanium surface could be an alternative to implants of at least 10.0 mm long placed in bone augmented with bone substitutes in posterior atrophic jaws. MATERIALS AND METHODS: Forty patients with atrophic posterior (premolar and molar areas) mandibles with 5.0 mm to 7.0 mm bone height above the mandibular canal, and 40 patients with atrophic maxillas with 4...
2018: European Journal of Oral Implantology
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