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https://www.readbyqxmd.com/read/29145529/volumetric-bone-measurement-around-dental-implants-using-3d-image-superimposition-a-methodological-and-clinical-pilot-study
#1
Eduardo Aydos Villarinho, André Correia, Alvaro Vigo, Nuno Viriato Ramos, Mário Augusto Pires Vaz, Rosemary Sadami Arai Shinkai
PURPOSE: This study describes the development of a methodology for using three-dimensional (3D) image superimposition to measure volumetric changes in bone level around dental implants in comparison with linear measures. MATERIALS AND METHODS: The sample was comprised of 46 dental implants of 6-mm length and 4.1-mm diameter placed in the posterior maxilla and posterior mandible in 20 patients. All implants received screw-retained single crowns. Radiographic images were taken using cone beam computed tomography (CBCT) and digital periapical radiography after implantation and after 12 and 24 months of functional loading (after crown installation)...
November 16, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29142865/osteosarcoma-of-the-jaws-in-koreans-analysis-of-26-cases
#2
Hye-In Jeong, Mi Jee Lee, Woong Nam, In-Ho Cha, Hyung Jun Kim
Objectives: In order to assess clinical behavior, response to treatment, and factors influencing prognosis of Korean patients with osteosarcoma of the jaws (OSJ). Materials and Methods: A retrospective study of clinical, and pathological records of 26 patients with OSJ treated at the Department of Oral and Maxillofacial Surgery in Yonsei University Dental Hospital from 1990 to March 2017. Results: Of 26 patients, there were 9 men (34.6%) and 17 women (65...
October 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29142655/maxillary-sinus-floor-augmentation-a-review-of-selected-treatment-modalities
#3
REVIEW
Thomas Starch-Jensen, Janek Dalsgaard Jensen
Objectives: The objective of the present study is to present the current best evidence for enhancement of the vertical alveolar bone height and oral rehabilitation of the atrophic posterior maxilla with dental implants and propose some evidence-based treatment guidelines. Material and Methods: A comprehensive review of the English literature including MEDLINE (PubMed), Embase and Cochrane Library search was conducted assessing the final implant treatment outcome after oral rehabilitation of the atrophic posterior maxilla with dental implants...
July 2017: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/29142638/analysis-of-dimensions-and-shapes-of-maxillary-and-mandibular-dental-arch-in-korean-young-adults
#4
Su-Jung Park, Richard Leesungbok, Jae-Won Song, Se Hun Chang, Suk-Won Lee, Su-Jin Ahn
PURPOSE: The aim of this study was to investigate dental arch dimensions and to classify arch shape in Korean young adults. MATERIALS AND METHODS: The sample included 50 Koreans with age ranging from 24 to 32 years. Maxillary and mandibular casts were fabricated using irreversible hydrocolloid and type III dental stones. Incisor-canine distance, incisor-1(st) molar distance, incisor-2(nd) molar distance, intercanine distance, inter-1(st) molar distance, and inter-2(nd) molar distance in both the maxillary and mandibular arch were measured using a three-dimensional measuring device...
October 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29140903/cleft-related-orthognathic-surgery-based-on-maxillary-vertical-lengthening-of-the-anterior-facial-height
#5
Woo Shik Jeong, Hyung Hwa Jeong, Soon Man Kwon, Kyung S Koh, Jong Woo Choi
BACKGROUND: The conventional approach during orthognathic surgery for cleft-related deformities has largely focused on restoration of maxilla retrusion, using the maxillary advancement as a standard treatment objective. However, we thought the maxillary vertical shortening and deficient incisor show could be the additional key elements of cleft-related deformities. Although slight vertical lengthening can be obtained with only maxillary advancement, it would not be enough to obtain satisfactory aesthetical results in terms of the anterior facial height...
November 11, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29140376/evaluating-maxillary-sinus-septa-using-cone-beam-computed-tomography-is-there-a-difference-in-frequency-and-type-between-the-dentate-and-edentulous-posterior-maxilla
#6
Martina Schriber, Thomas von Arx, Pedram Sendi, Reinhilde Jacobs, Valerie Ga Suter, Michael M Bornstein
PURPOSE: To analyze and compare the frequency, type, and location of maxillary sinus septa in patients with a dentate and an edentulous posterior maxilla using cone beam computed tomography (CBCT) imaging. MATERIALS AND METHODS: The study consisted of 100 maxillary sinuses: 50 from patients with a dentate and 50 from patients with an edentulous posterior maxilla. The aim was to assess the frequency, morphology, and location of maxillary sinus septa in axial, sagittal, and coronal CBCT images...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140373/clinical-considerations-of-adapted-drilling-protocol-by-bone-quality-perception
#7
Marco Toia, Michele Stocchero, Francesca Cecchinato, Enrico Corrà, Ryo Jimbo, Denis Cecchinato
PURPOSE: To evaluate insertion torque value (ITV) and marginal bone loss (MBL) of an implant system after a clinically perceived bone quality-adapted drilling. MATERIALS AND METHODS: This multicenter retrospective study included patients treated with implants, conventionally loaded, in completely healed sites. Operators customized the osteotomy preparation according to radiographic assessment and their perception of bone quality. Drilling sequence, bone quality, and ITV were recorded at the time of surgery...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140101/fabrication-of-a-surgical-guide-for-lateral-sinus-augmentation
#8
Robert Stanley, Gregori M Kurtzman
Cone-beam computed tomography (CBCT) scans are used in planning implant treatment to help determine volume of available bone and identify anatomical structures. This enhances planning, particularly when inadequate bone is present in the posterior maxilla due to proximity of the inferior aspect of the maxillary sinus to the crestal bone. To place dental implants into this area, sinus augmentation is often needed to provide sufficient bone volume to support implants and allow prosthetic loading with predictable long-term results...
November 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/29135737/effect-of-long-term-use-of-facemask-with-miniplate-on-maxillary-protraction-in-patients-with-cleft-lip-and-palate
#9
Sung Woon On, Seung-Hak Baek, Jin-Young Choi
The purpose of this retrospective study was to investigate the effect of a long-term use of facemask with miniplate (FM-MP) on maxillary protraction in cleft lip and palate (CLP) patients. The subjects were 21 CLP patients (16 unilateral CLP and 5 bilateral CLP patients), who were treated with identical lip and palate surgical method and FM-MP therapy performed by single surgeon and single orthodontist. Lateral cephalogram was taken before (T1; mean age, 11.1 years) and after maxillary protraction (T2; mean age, 16...
November 9, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29134022/larva-and-pupa-of-megatoma-s-str-undata-linnaeus-1758-with-remarks-on-biology-and-economic-importance-coleoptera-dermestidae
#10
Marcin Kadej
An updated description of the final larval instar and pupa of Megatoma (s. str.) undata (Linnaeus, 1758) (Coleoptera: Dermestidae) is presented. Several morphological characteristics of M. undata larvae are documented and discussed: antenna, epipharynx, mandibula, maxilla, ligula with labial palpi, hastisetae, terga, and condition of the antecostal suture. The paper is fully illustrated and includes some important additions to extend notes on this species available in the references. Summarised data about biology, economic importance, and distribution of M...
2017: ZooKeys
https://www.readbyqxmd.com/read/29133198/study-of-the-mechanical-reliability-of-an-s-shaped-adjustable-osteosynthesis-plate-for-bilateral-sagittal-split-osteotomies-study-on-15-consecutive-cases
#11
Alexis Veyssiere, Nicols Leprovost, Béatrice Ambroise, Raphaelle Prévost, Anne Chatellier, Hervé Bénateau
INTRODUCTION: The main challenge during the osteosynthesis of a bilateral sagittal split osteotomy (BSSO) is to take into account the correct position of the condyle. Adjustable plates can be used to fine-tune the final occlusion without changing the osteosynthesis. A new type of adjustable plate is presented in this article. The aim is to assess the mechanical reliability of this system during the surgery and during the healing period, thanks to a preliminary prospective on 15 consecutive cases...
November 10, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29127774/characteristics-of-supernumerary-teeth-in-nonsyndromic-population-in-an-urban-dental-school-setting
#12
Mackensie McBeain, Michael Miloro
PURPOSE: The purpose of this study was to analyze the clinical records of all patients evaluated for supernumerary teeth at the University of Illinois-Chicago Department of Oral and Maxillofacial Surgery postgraduate clinic from January 1, 2010 to October 31, 2015 to determine the demographics of impacted supernumerary teeth among different ethnicities in the city of Chicago. MATERIALS AND METHODS: A retrospective case series was completed on patients eligible for inclusion in the study who had a diagnosis of at least 1 full bony impacted supernumerary tooth (D7240)...
October 16, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29127377/bayesian-networks-analysis-of-malocclusion-data
#13
Marco Scutari, Pietro Auconi, Guido Caldarelli, Lorenzo Franchi
In this paper we use Bayesian networks to determine and visualise the interactions among various Class III malocclusion maxillofacial features during growth and treatment. We start from a sample of 143 patients characterised through a series of a maximum of 21 different craniofacial features. We estimate a network model from these data and we test its consistency by verifying some commonly accepted hypotheses on the evolution of these disharmonies by means of Bayesian statistics. We show that untreated subjects develop different Class III craniofacial growth patterns as compared to patients submitted to orthodontic treatment with rapid maxillary expansion and facemask therapy...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29126426/the-influence-of-immediately-loaded-implant-treatment-in-the-atrophic-edentulous-maxilla-on-oral-health-related-quality-of-life-of-edentulous-patients-3-year-results-of-a-prospective-study
#14
Maria Erkapers, Susanna Segerström, Karl Ekstrand, Russell A Baer, Joseph A Toljanic, Andreas Thor
BACKGROUND: To evaluate oral health related quality of life (OHQoL) in edentulous patients treated with immediately loaded implants in the maxilla. METHODS: Fifty-one edentulous patients in two centers received six maxillary implants each were loaded within 24 h with provisional restoration. Definitive restoration was delivered 20-24 weeks later. OHQoL was evaluated preoperatively with the Oral Health Impact Profile 49 questionnaire (OHIP-49) and on five subsequent occasions...
November 10, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29125933/can-use-of-rigid-fixation-after-consolidation-benefit-cleft-patients-following-distraction-osteogenesis
#15
Reza Tabrizi, Kemal Tumer, Shervin Shafiei, Ashkan Rashad
PURPOSE: The stability of distraction osteogenesis (DO) is an important issue in maxillary advancement for patients with cleft lip and palate (CLP). The aim of this study was to evaluate postoperative stability in patients with and without internal fixation after removing maxillary distraction devices. MATERIALS AND METHODS: This randomized clinical trial assessed patients with CLP who needed maxillary advancement greater than 6 mm; they were randomly assigned to 1 of 2 groups...
October 16, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29125038/melanotic-neuroectodermal-tumour-of-infancy-a-case-report-and-differential-diagnosis
#16
A P Tan, Thomas S Jacques, Kshitij Mankad, Gregory James, Owase Jeelani, Olga Slater, Felice D'Arco
Melanotic neuroectodermal tumour of infancy is an uncommon pigmented neoplasm of neural crest origin. It was first described in 1918 by Krompecher, known as congenital melanocarcinoma at that time. Although it is generally agreed upon that it is a benign entity, it is locally aggressive and has a significant recurrent risk, reported to be between 10-15%. There have also been prior reports of malignant behaviour in these tumours, although extremely rare. The majority of cases of this tumour (about 70%) arise from the maxilla and its occurrence in the cranial vault represents approximately 15...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/29123998/feasibility-of-dentascan-in-planning-of-implant-surgery-in-posterior-maxilla-and-mandible
#17
Siddhartha Chandel, Nishi Singh, Amiya Agrawal, Harmurti Singh, H Nandakumar
Objectives: The present evaluate the feasibility of Computed tomography (Dentascan), in assessment of the implant site in posterior maxilla & mandible. Material and Methods: data of total 11 patients with 20 implant sites were involved in the present study. Out of the 20 implant sites selected 10 were in posterior maxilla and 10 in posterior mandible. All the patients were routinely examined by panoramic radiography and CT. All images obtained i.e., conventional panoramic radiograph, and film based Dentascan MPR- CT images were evaluated for the detectability of mandibular canal at the mental foramen, 1 cm, 2 cm, and 3 cm posterior to mental foramen...
September 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/29123992/prevalence-of-oral-tori-and-exostosis-in-malaysian-population-a-cross-sectional-study
#18
Ashish Kumar Singh, Srinivas Sulugodu Ramachandra, Shelly Arora, Daniel Devaprakash Dicksit, C G Kalyan, Priyanshi Singh
Introduction: Oral tori and exostosis are non-pathological bony protuberances seen on the alveolar surfaces of the jaw bones. These are commonly seen on the palatal surfaces of the maxilla [torus palatinus (TP)] and around the premolars in the lingual surface of the mandible [torus mandibularis (TM)]. The aim of this cross-sectional study was to determine the prevalence of tori/exostosis in the Malaysian population. Methodology: A total of 2666 patients were examined for the presence of tori and exostosis in the maxilla and mandible and were categorized into TP, TM, and exostosis (facial/labial)...
September 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/29119541/influence-of-implant-number-length-and-tilting-degree-on-stress-distribution-in-atrophic-maxilla-a-finite-element-study
#19
Zeynep Gümrükçü, Yavuz Tolga Korkmaz
This study aims to evaluate the stress values, created in peri-implant region as a consequence of loading on fixed hybrid dentures that was planned with different implant numbers, lengths, or tilting angulations. Thirteen three-dimensional (3D) finite element analysis models were generated with four, five, or seven implants (group A, B, and C). Except the distal implants, all implants were modeled at 4.1 mm (diameter) and 11.5 mm (length) in size. Distal implants were configured to be in five different lengths (6, 8, 11...
November 9, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29119097/skeletal-anchorage-for-intrusion-of-bimaxillary-molars-in-a-patient-with-skeletal-open-bite-and-temporomandibular-disorders
#20
Akihiko Iwasa, Shinya Horiuchi, Nao Kinouchi, Takashi Izawa, Masahiro Hiasa, Nobuhiko Kawai, Akihiro Yasue, Ali H Hassan, Eiji Tanaka
The treatment of severe skeletal anterior open bite is extremely difficult in adults, and orthognathic surgery is generally selected for its treatment. We report the case of an 18-year-old adult patient with skeletal anterior open bite and temporomandibular disorders who was successfully treated using temporary anchorage devices. She had an open bite of -2.0 mm and an increased facial height. Miniplates were implanted in both the maxilla and mandible, and molar intrusion resulted in counterclockwise rotation of the mandible over a period of 12 months...
October 2017: Journal of Orthodontic Science
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