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https://www.readbyqxmd.com/read/28653343/guided-bone-regeneration-at-zirconia-and-titanium-dental-implants-a-pilot-histological-investigation
#1
Goran I Benic, Daniel S Thoma, Ignacio Sanz-Martin, Fernando Munoz, Christoph H F Hämmerle, Antonio Cantalapiedra, Jens Fischer, Ronald E Jung
AIM: To test whether guided bone regeneration (GBR) of peri-implant defects at zirconia (ZrO2 ) implants differs from GBR at titanium (Ti) implants regarding the bone integration of the implant and of the grafting material. MATERIALS AND METHODS: Maxillary premolars and molars were extracted in seven dogs. After 5 months, four semi-saddle bone defects were created in each maxilla. Implant placement and simultaneous GBR were performed using the following randomly assigned modalities: (1) ZrO2 implant + deproteinized bovine bone mineral (DBBM) granules + a collagen membrane (CM), (2) ZrO2 implant + DBBM with 10% collagen matrix + CM, (3) ZrO2 implant + DBBM block + CM, and (4) Ti implant + DBBM granules + CM...
June 26, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28651713/immediately-placed-and-restored-single-tooth-implants-in-the-anterior-maxilla-shown-to-have-good-esthetic-outcomes-1-year-after-treatment
#2
Romina Brignardello-Petersen
No abstract text is available yet for this article.
July 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28646527/a-randomized-clinical-trial-to-compare-pain-levels-during-three-types-of-oral-anesthetic-injections-and-the-effect-of-dentalvibe-%C3%A2-on-injection-pain-in-children
#3
Nabih Raslan, Reem Masri
BACKGROUND: Pain control is of great importance particularly in pediatric dentistry. The Dentalvibe(®) is a device that delivers vibration to the injection site in order to reduce intraoral injections' pain. AIMS: The purpose of this study was to compare pain levels caused by three types of anesthesia injections and the effect of the Dentalvibe(®) on reducing the injection pain. DESIGN: The study included 40 children, and each one received six injections...
June 24, 2017: International Journal of Paediatric Dentistry
https://www.readbyqxmd.com/read/28644570/clinical-and-genetic-analysis-of-patients-with-cherubism
#4
R A Machado, H A R Pontes, F R Pires, H M Silveira, A Bufalino, R Carlos, F M Tuji, D B M Alves, A R Santos-Silva, M A Lopes, H M Capistrano, R D Coletta, F P Fonseca
OBJECTIVE: To describe the clinical and genetic features of patients with cherubism. MATERIAL AND METHODS: A descriptive analysis of 14 cases from 9 different families was carried out. Clinicopathological, imaging and follow-up data were retrieved from patients' medical files and correlated with the genetic profile of each patient. Genomic DNA isolated from buccal mucosa cells was subjected to direct sequencing analysis of the SH3BP2 gene. RESULTS: Females were more affected than males (8:6), and the mean age at diagnosis was 8...
June 23, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28643933/oncologic-doses-of-zoledronic-acid-induce-site-specific-suppression-of-bone-modelling-in-rice-rats
#5
C R Exposto, U Oz, J S Callard, M J Allen, H Khurana, A D' Atri, X Mo, S A Fernandez, D N Tatakis, K Edmonds, P M Westgate, S S Huja
OBJECTIVES: To examine the effect of zoledronic acid (ZOL) on cortical bone modelling and healing of extraction sockets in the jaw bones of a rodent model. We hypothesized ZOL suppresses both the bone formation in the modelling mode in the jaw bones and alters the extraction site healing. MATERIAL & METHODS: Rice rats were administered saline solution and two dose regimens of ZOL: 0.1 mg/kg, twice a week, for 4 weeks (n=17, saline=8 & ZOL=9) and a higher dose of 0...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643923/micro-anatomical-responses-in-periodontal-complexes-of-mice-to-calibrated-orthodontic-forces-on-the-crown
#6
A Pal, L Chen, L Yang, F Yang, B Meng, A H Jheon, S P Ho
OBJECTIVE: Correlating mechanical forces with quantifiable physical changes in the dentoalveolar complex. SETTING AND SAMPLE POPULATION: Male 6-week C57BL/6 mice (N=3), micro X-ray-computed tomography; post-analysis software to extract physical changes in periodontal ligament (PDL)-space. MATERIALS AND METHODS: Silicone-elastic bands were placed between maxillary molars for 1 week, with the contralateral side as internal control. Average displacements between crowns and roots, and changes in PDL-spaces were evaluated by registering X-ray tomograms of experimental and control hemi-maxillae...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28638564/glandular-odontogenic-cyst-associated-with-ameloblastoma-case-report-and-review-of-the-literature
#7
Timothée Cousin, Samuel Bobek, Dolphine Oda
Glandular odontogenic cyst (GOC) associated with ameloblastoma is an exceedingly rare histologic presentation with no known clinical significance or treatment applications. Four cases have been reported, three in the mandible and one in the maxilla. The age range is 14-65 and with male predilection. All four presented with swellings and two with pain. We add one more case to the literature of a 58-year old male presenting with an expansile multilocular radiolucency between teeth #19-23. The ameloblastomatous changes in this case are consistent with those of a unicystic ameloblastoma-mural subtype...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28638562/a-rare-case-of-oral-multisystem-langerhans-cell-histiocytosis
#8
Maria-Teresa Facciolo, Francesco Riva, Patrizia Gallenzi, Romeo Patini, Domenico Gaglioti
Langerhans cell histiocytosis (LCH) is a rare disorder characterized by high proliferation of Langerhans dendritic cells. LCH is a solitary or multifocal disease that primarily involves bone tissue and often affects children and young men. A 29 years-old Caucasian man was referred to the Oral Surgery Unit of George Eastman Hospital - Umberto I teaching hospital, with third degree mobility of teeth belonging to second, third and fourth quadrant. Panoramic radiograph showed multiple radiolucent areas with well demarcated borders on the right and left site of the mandible and on the left site of the maxilla...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28638348/the-redox-balance-in-erythrocytes-plasma-and-periosteum-of-patients-with-titanium-fixation-of-the-jaw
#9
Jan Borys, Mateusz Maciejczyk, Adam J Krȩtowski, Bozena Antonowicz, Wioletta Ratajczak-Wrona, Ewa Jabłońska, Piotr Załęski, Danuta Waszkiel, Jerzy R Ładny, Piotr Żukowski, Anna Zalewska
Titanium miniplates and screws are commonly used for fixation of jaw fractured or osteotomies. Despite the opinion of their biocompatibility, in clinical practice symptoms of chronic inflammation around the fixation develop in some patients, even many years after the application of miniplates and screws. The cause of these complications is still an unanswered question. Taking into account that oxidative stress is one of the toxic action of titanium, we have evaluated the antioxidant barrier as well as oxidative stress in the erythrocytes, plasma and periosteum covering the titanium fixation of the jaw...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28631541/semilunar-coronally-advanced-periodontal-flap-to-increase-soft-tissue-coverage-of-a-maxillary-fourth-premolar-in-a-dog
#10
Allen Skinner, Brook Niemiec
A 7-year-old, 31.3 kg spayed female Golden Retriever dog was presented for the treatment of Miller Class I gingival recession at the right maxillary fourth premolar (108). A semilunar coronally advanced periodontal flap was performed at this tooth and created an increase of approximately 3 mm of soft tissue coverage of the tooth. This method may have benefits over traditional periodontal advancement flaps in that there is no need for suturing, can be done more quickly, maintains lateral blood supply to the flap, and likely has decreased risk of surgical site dehiscence...
June 2017: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28631408/resonance-frequency-analysis-of-dental-implants-placed-at-the-posterior-maxilla-varying-the-surface-treatment-only-a-randomized-clinical-trial
#11
Marcelo M Novellino, Newton Sesma, Piero R Zanardi, Dalva C Laganá
BACKGROUND: Chemical modifications of the dental implant surface that improve the wettability result in a faster and better osseointegration. PURPOSE: The aim of this randomized clinical trial was to evaluate the implant stability quotient (ISQ) of implants with similar designs, treated with 2 surfaces, sandblasted acid-etched (SAE) and hydrophilic SAE, within the initial 16 weeks of healing. MATERIAL AND METHODS: A total of 64 implants (32 SAE-control group and 32 modified SAE-test group) with the same design, length, and diameter (conical and compressive, 4...
June 20, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28630838/a-case-report-of-an-unusual-case-of-tuberculous-osteomyelitis-causing-spontaneous-pathological-fracture-of-humerus-in-a-middle-aged-female
#12
Umesh Birole, Ashish Ranade, Mahesh Mone
INTRODUCTION: Tuberculosis is a major health problem worldwide. Extrapulmonary tuberculosis is often secondary to some primary foci in lungs. There are reports of tuberculous osteomyelitis involving maxilla, ulna, femur, and shoulder joint but none have reported pathological fracture in humeral diaphysis due to tuberculosis osteomyelitis without shoulder joint involvement. We report a case of pathological fracture of humerus diaphysis due to tuberculous osteomyelitis with normal articular space...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28628350/custom-cast-ball-attachments-used-on-outdated-implants-to-restore-a-maxillary-implant-supported-overdenture
#13
Andressa Rosa Perin Leite, Danny Omar Mendoza Marin, Gabriela Giro, Ana Carolina Pero, Ligia Antunes Pereira Pinelli, JoséMauriciodos Santos Reis
The lack of compatible prosthetic components can be a complication during oral rehabilitations using outdated implants. The aim of the present clinical report was to describe an alternative technique for the fabrication of a maxillary implant-supported overdenture in a patient with 20-year-old dental implants using castable spherical patterns and ball-attachments. The patient had been wearing a relined bar/clip overdenture in the mandible on four external-hexagon dental implants and a relined complete denture in the maxilla on four internal-hexagon implants due to abutment screw fracture inside of the implants, losing the attachment system...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28628162/-distant-metastases-of-malignant-salivary-gland-carcinoma-after-treated-by-125-i
#14
(no author information available yet)
OBJECTIVE: To investigate clinical features of distant metastases from malignant salivary gland carcinomas after treated by (125)I internal brachy therapy alone. METHODS: Between 2002 and 2010, 43 patients with locally advanced unresectable or recurrent malignant salivary gland carcinomas were treated by (125)I internal brachy therapy alone at Peking University School and Hospital of Stomatology. All of them had been follow-up at least 2 years. The primary sites of malignant salivary gland carcinomas were the parotid for 12 patients, infratemporal fossa for 9 patients, tongue for 7 patients, maxilla for 6 patients, parapharyngeal for 4 patients, floor of months for 3 patients, submandibular gland for 1 patient, and lip for 1 patient...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28626865/positional-changes-of-maxillary-central-incisors-following-orthodontic-treatment-using-single-crown-implants-as-fixed-reference-markers
#15
E B Brahem, B Holm, L Sonnesen, N Worsaae, K Gotfredsen
OBJECTIVES: This follow-up study (1) compares tooth displacement of central incisors in patients with and without pre-implant orthodontic treatment and (2) investigates whether sex, age, or orthodontic retention have an effect on tooth displacement after the insertion of single-crown implants. MATERIALS AND METHODS: Fifty-seven patients - thirty-seven with (test group) and twenty without pre-implant orthodontic treatment (control group) - were rehabilitated with 89 single-crown implants in the upper maxilla...
June 18, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28626763/implant-stability-in-the-posterior-maxilla-a-controlled-clinical-trial
#16
Raquel Zita Gomes, Mario Ramalho de Vasconcelos, Isabel Maria Lopes Guerra, Rute Alexandra Borges de Almeida, Antonio Cabral de Campos Felino
AIM: To evaluate the primary and secondary stability of implants in the posterior maxilla. METHODS: Patients were allocated into three groups: (A) native bone, (B) partially regenerated bone, and (C) nearly totally regenerated bone. Insertion torque (IT) and implant stability quotient (ISQ) were measured at placement, to evaluate whether satisfactory high primary stability (IT ≥ 45 N/cm; ISQ ≥ 60) was achieved; ISQ was measured 15, 30, 45, and 60 days after placement, to investigate the evolution to secondary stability...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28624341/extranodal-lymphoma-arising-within-the-maxillary-alveolus-a-case-report
#17
David MacDonald, Thomas Li, Siu Fai Leung, Justin Curtin, Andy Yeung, Montgomery A Martin
OBJECTIVE: Extranodal lymphomas affecting the head and neck arise infrequently within the bones of the jaws. This is a report of a symptom-free patient whose general dentist detected a radiolucency as an incidental finding on conventional radiography. STUDY DESIGN: The conventional radiography of lesions in the maxilla displayed "floating teeth" indicative of malignancy. This case was then imaged by cone beam computed tomography (CBCT), multidetector computed tomography (MDCT), and magnetic resonance imaging (MRI)...
May 4, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28623555/goldenhar-syndrome-current-perspectives
#18
REVIEW
Katarzyna Bogusiak, Aleksandra Puch, Piotr Arkuszewski
BACKGROUND: Progress in medical branches that has taken place since the first child with Goldenhare syndrome (GS) had been described in 1952 by Maurice Goldenhar, facilitated better understanding of this congenital defect. It also gave new perspectives and the opportunity to achieve satisfactory treatment results, mainly due to development of surgical techniques. DATA SOURCES: Based on the literature and own experience, we discussed the phenotype of presentation of GS, ethiopathogenesis, genetic counselling and treatment with particular emphasis on surgery correction of hemifacial microsomia...
June 15, 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28623335/complex-neuroanatomy-in-the-rostrum-of-the-isle-of-wight-theropod-neovenator-salerii
#19
Chris Tijani Barker, Darren Naish, Elis Newham, Orestis L Katsamenis, Gareth Dyke
The discovery of large, complex, internal canals within the rostra of fossil reptiles has been linked with an enhanced tactile function utilised in an aquatic context, so far in pliosaurids, the Cretaceous theropod Spinosaurus, and the related spinosaurid Baryonyx. Here, we report the presence of a complex network of large, laterally situated, anastomosing channels, discovered via micro-focus computed tomography (μCT), in the premaxilla and maxilla of Neovenator, a mid-sized allosauroid theropod from the Early Cretaceous of the UK...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28621323/a-robust-methodology-for-the-quantitative-assessment-of-the-rat-jawbone-microstructure
#20
Marissa Chatterjee, Fernanda Faot, Cassia Correa, Joke Duyck, Ignace Naert, Katleen Vandamme
Micro-computed tomography can be applied for the assessment of the micro-architectural characteristics of the cortical and trabecular bones in either physiological or disease conditions. However, reports often lack a detailed description of the methodological steps used to analyse these images, such as the volumes of interest, the algorithms used for image filtration, the approach used for image segmentation, and the bone parameters quantified, thereby making it difficult to compare or reproduce the studies...
June 16, 2017: International Journal of Oral Science
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