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https://www.readbyqxmd.com/read/28944375/influence-of-different-calcium-phosphates-on-an-experimental-adhesive-resin
#1
Isadora Martini Garcia, Vicente Castelo Branco Leitune, Susana Maria Werner Samuel, Fabrício Mezzomo Collares
PURPOSE: To formulate adhesive resins with 2 wt% of hydroxyapatite (HAp), α-tricalcium phosphate (α-TCP), or octacalcium phosphate (OCP) and to compare these groups with an unfilled adhesive regarding the degree of conversion, polymerization rate, microshear bond strength and mineral deposition. MATERIALS AND METHODS: The experimental adhesive resin was formulated mixing 66.6 wt% bisphenol A glycol dimethacrylate (bis-GMA), 33.3 wt% 2-hydroxyethyl methacrylate (HEMA), and a photoinitiator system...
September 21, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28938034/influence-of-partial-o%C3%A2-pressure-on-the-adhesion-proliferation-and-osteogenic-differentiation-of-human-dental-pulp-stem-cells-on-%C3%AE-tricalcium-phosphate-scaffold
#2
Jose Viña-Almunia, Cristina Mas-Bargues, Consuelo Borras, Juan Gambini, Marya El Alami, Jorge Sanz-Ros, Miguel Peñarrocha, Jose Vina
PURPOSE: To analyze, in vitro, the influence of O₂ pressure on the adhesion, proliferation, and osteogenic differentiation of human dental pulp stem cells (DPSC) on β-tricalcium phosphate (β-TCP) scaffold. MATERIALS AND METHODS: DPSC, positive for the molecular markers CD133, Oct4, Nestin, Stro-1, and CD34, and negative for CD45, were isolated from extracted third molars. Experiments were started by seeding 200,000 cells on β-TCP cultured under 3% or 21% O₂ pressure...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28936293/does-the-postoperative-administration-of-antibiotics-reduce-the-symptoms-of-lower-third-molar-removal-a-randomized-double-blind-clinical-study
#3
María Martín-Ares, Cristina Barona-Dorado, Natalia Martínez-Rodríguez, Jorge Cortés-Bretón-Brinkmann, Javier Sanz-Alonso, José-María Martínez-González
BACKGROUND: To date there is little scientific evidence that clarifies the therapeutic effect of antibiotics for managing the postoperative symptoms of impacted third molar surgery. The aim of this study was to evaluate the efficacy of antibiotic treatment for reducing non-infectious clinical symptoms. MATERIAL AND METHODS: Patient data was collected from the patients´ medical records and the results were statistically evaluated with SPSS versión 21.0; SPSS, IBM; Chicago, IL, USA)...
August 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28933800/prevalence-and-morphometric-analysis-of-idiopathic-osteosclerosis-in-a-chilean-population
#4
Ramón Fuentes, Alain Arias, Nicolás Astete, Constanza Farfán, Ivonne Garay, Fernando Dias
The aim of this study was to analyse the prevalence and morphometric parameters of idiopathic osteosclerosis (IO) in a Chilean population. IO is an intraosseous growth of compact, benign, unilocular, non-expandable bone that is referred to as an anatomical variation. A cross-sectional study was performed using 1000 digital panoramic radiographs of adults in which data on the location (maxillary/mandibular, right/left hemiarcades), shape, position to the dental apex, and the prevalence of IOs were observed in relation to gender and age...
September 21, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28932309/the-effect-of-three-different-biomaterials-on-proliferation-and-viability-of-human-dental-pulp-stem-cells-in-vitro-study
#5
Dalia A Mohamed, Maha I Abdelfattah, Eman H A Aboulezz
BACKGROUND: Biomaterial cytotoxicity on dental stem cells plays a critical role in managing the regeneration of dental tissue. AIM: The aim of the present study was to evaluate the effect of Nano-hydroxy apatite (NHA), Mineral trioxide aggregate (MTA), and Calcium-enriched mixture (CEM) on the proliferation, and viability of human dental pulp stem cells (hDPSCs) isolated from third molar teeth. METHODS: Cultured DPSCs were characterized and the tested biomaterials were shaped into cylinders then inserted directly on the DPSCs...
August 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28932145/comparison-of-using-different-bridge-prosthetic-designs-for-partial-defect-restoration-through-mathematical-modeling
#6
Oksana Styranivska, Nataliia Kliuchkovska, Nataliya Mykyyevych
OBJECTIVE: To analyze the stress-strain states of bone and abutment teeth during the use of different prosthetic designs of fixed partial dentures with the use of relevant mathematical modeling principles. MATERIALS AND METHODS: The use of Comsol Multiphysics 3.5 (Comsol AB, Sweden) software during the mathematical modeling of stress-strain states provided numerical data for analytical interpretation in three different clinical scenarios with fixed dentures and different abutment teeth and demountable prosthetic denture with the saddle-shaped intermediate part...
July 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28932049/evaluation-of-two-flap-designs-on-the-mandibular-second-molar-after-third-molar-extractions
#7
Nabeeh A Alqahtani, S Khaleelahmed, Farheen Desai
BACKGROUND: The extraction of third molars is associated with some clinical outcomes and periodontal problems. It is imperative to note that the type of incision used in the surgery for the removal of the impacted third molar is critical. The design of the flap influences the healing of the surgically created defect and damage to the distal periodontal area of the adjacent second molar. However, till date, there have been conflicting reports on the influence of different flap designs used for the surgical removal of impacted third molars...
May 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28927922/retrospective-clinical-evaluation-of-ceramic-onlays-placed-by-dental-students
#8
Jennifer J Archibald, Gildo Coelho Santos, Maria Jacinta Moraes Coelho Santos
STATEMENT OF PROBLEM: Indirect restorations with partial or complete occlusal surface coverage have been recommended to restore teeth with weakened walls in order to prevent cusp fracture. The success of these restorations when performed by dental students is unknown. PURPOSE: The purpose of this retrospective study was to evaluate the clinical performance of adhesively bonded ceramic onlay restorations placed by third- and fourth-year dental students. MATERIAL AND METHODS: Sixty-five ceramic onlays were placed in patients between 2009 and 2015...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28924526/first-report-of-tripled-retromolar-foramina
#9
Puhan He, Joe Iwanaga, Mindy K Truong, Nimer Adeeb, R Shane Tubbs, Koh-Ichi Yamaki
The retromolar foramen (RMF) is the bony entrance of the retromolar canal, through which a neurovascular bundle runs. It is essential to locate such anatomic variants in a patient in order to avoid complications in surgery, implant placement, or anesthesia of the area. To our knowledge, there has only been one case report of supernumerary RMF, which reported one bilateral doubled retromolar foramina and one doubled left RMF. We present an extremely rare case in which a right triple RMF was observed on cone beam computed tomography in a cadaver...
July 7, 2017: Curēus
https://www.readbyqxmd.com/read/28924388/spatiotemporal-expression-of-wnt-%C3%AE-catenin-signaling-during-morphogenesis-and-odontogenesis-of-deciduous-molar-in-miniature-pig
#10
Xiaoshan Wu, Yan Li, Fu Wang, Lei Hu, Yang Li, Jinsong Wang, Chunmei Zhang, Songlin Wang
The canonical Wnt/β-catenin signaling pathway has been shown to play essential roles in tooth initiation and early tooth development. However, the role of Wnt/β-catenin signaling in cusp patterning and crown calcification in large mammals are largely unknown. In our previous study, miniature pigs were used as the animal model due to the similarity of tooth anatomy and replacement pattern between miniature pig and human. Dynamic gene expression of third deciduous molar (DM3) in miniature pig at early stages was profiled using microarray method and expression of Wnt genes was significantly correlate with odontogenesis...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28917830/al-awadi-raas-rothschild-syndrome-with-dental-anomalies-and-a-novel-wnt7a-mutation
#11
Piranit Nik Kantaputra, Seema Kapoor, Prashant Verma, Massupa Kaewgahya, Katsushige Kawasaki, Atsushi Ohazama, James R Ketudat Cairns
Al-Awadi-Raas-Rothschild syndrome (AARRS; OMIM 276820) is a very rare autosomal recessive limb malformation syndrome caused by WNT7A mutations. AARRS is characterized by various degrees of limb aplasia and hypoplasia. Normal intelligence and malformations of urogenital system are frequent findings. Complete loss of WNT7A function has been shown to cause AARRS, however, its partial loss leads to the milder malformation, Fuhrmann syndrome. An Indian boy affected with AARRS is reported. A novel homozygous base substitution mutation c...
September 13, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28915303/prevalence-of-functional-dentition-in-a-group-of-mexican-adult-males
#12
Mirna Minaya-Sánchez, Carlo Eduardo Medina-Solís, Juan Fernando Casanova-Rosado, Ana Alicia Vallejos-Sánchez, Alejandro José Casanova-Rosado, María de Lourdes Márquez-Corona, Martha Mendoza-Rodríguez, Gerardo Maupomé
OBJECTIVE: To determine the prevalence of functional dentition and associated periodontal variables in a sample of Mexican adult males. METHODS: A cross-sectional study of 161 policemen in Campeche, Mexico, was carried out. A clinical examination using an electronic probe was used to collect variables (dental plaque, periodontal pockets, gingival recession, suppuration, and bleeding on probing) on 6 periodontal sites (a maximum of 168 sites, excluding third molars)...
September 2017: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/28913310/treatment-of-mandibular-angle-fractures
#13
REVIEW
Jung-Ho Lee
The management of mandibular angle fractures is often challenging and results in the highest complication rate among fractures of the mandible. In addition, the optimal treatment modality for angle fractures remains controversial. Traditional treatment protocols for angle fractures have involved rigid fixation with intraoperative maxillomandibular fixation (MMF) to ensure absolute stability. However, more recently, non-compression miniplates have gained in popularity and the use of absolute intraoperative MMF as an adjunct to internal fixation has become controversial...
June 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/28912943/assessment-of-low-level-laser-therapy-effects-after-extraction-of-impacted-lower-third-molar-surgery
#14
Shahrokh Raiesian, Mehdi Khani, Kazem Khiabani, Ershad Hemmati, Mohammad Pouretezad
Introduction: The aim of this study was to assess the effect of low-level laser therapy (LLLT) on pain, swelling and maximum mouth opening in patients undergoing third molar surgery. Methods: A prospective, randomized double-blind study was undertaken on 44 patients at the Dental School, Ahvaz Jundishapur University of Medical Sciences, in 2015. A low-level laser was randomly applied on one of the two sides after surgery of 15 patients. The experimental side received 18 J/cm(2) of energy density, wavelength of 980 nm, and output power of 1...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28902255/taking-advantage-of-an-unerupted-third-molar-a-case-report
#15
Igor Figueiredo Pereira, Fernando Zander Mucci Santiago, Augusto Cesar Sette-Dias, Vladimir Reimar Augusto de Souza Noronha
Introduction: Treatments with dental surgery seek to displace tooth to the correct position within the dental arch. Objective: To report a clinical case that took advantage of an unerupted third molar. Case history: A male patient, 18 years of age, was referred by his dentist to evaluate the third molars. The clinical exam revealed no visible lower third molars. The computed tomography (CT) exam showed the presence of a supernumerary tooth in the region of the mandibular ramus, on the left side, and impaction of the third molar, which was causing root resorption on the second molar, thus making it impossible to remain in the buccal cavity...
July 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28898431/anti-inflammatory-and-anti-oxidant-properties-of-schisandrin-c-promote-mitochondrial-biogenesis-in-human-dental-pulp-cells
#16
J S Takanche, Y-H Lee, J-S Kim, J-E Kim, S-H Han, S-W Lee, H-K Yi
AIM: To examine the properties of Schisandrin C as an anti-inflammatory and anti-oxidant compound, and whether its characteristics promote mitochondrial biogenesis in human dental pulp cells (HDPCs). METHODOLOGY: HDPCs were extracted from fresh third molars and cultured for experiments. Reactive oxidative stress (ROS) and nitric oxide (NO) formation were analyzed by a Muse cell analyzer. Western blotting and gelatin zymography were used to identify the presence of anti-oxidants, as well as anti-inflammatory and mitochondrial biogenesis with specific antibody...
September 12, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28898426/differences-between-inflammatory-and-catabolic-mediators-of-peri-implantitis-and-periodontitis-lesions-following-initial-mechanical-therapy-an-exploratory-study
#17
M Ghighi, A Llorens, B Baroukh, C Chaussain, P Bouchard, M Gosset
BACKGROUND AND OBJECTIVE: The aim of this study was to analyze the differences in inflammatory and catabolic mediators expressed in peri-implantitis compared to periodontitis lesions after non-surgical therapy. Peri-implantitis is associated with a faster rate of bone loss when compared with periodontitis, and peri-implant non-surgical therapy is ineffective to cure peri-implantitis. This may be due to persistent inflammation in peri-implantitis tissues after initial mechanical treatment...
September 12, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28893542/application-of-denaturing-gradient-gel-electrophoresis-to-the-analysis-of-bacterial-communities-associated-with-asymptomatic-and-symptomatic-pericoronitis
#18
REVIEW
Xin Zhang, Zheng Sun, Qiubo Yang
PURPOSE: Denaturing gradient gel electrophoresis (DGGE) was used to investigate the bacterial communities associated with asymptomatic and symptomatic pericoronitis. The aim of the study was to compare the fingerprinting patterns of these 2 clinical conditions. MATERIALS AND METHODS: The microbiota of mandibular third molar pockets associated with asymptomatic or symptomatic pericoronitis cases were collected and profiled by the polymerase chain reaction DGGE method...
August 18, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28893541/nanomechanical-assessment-of-bone-surrounding-implants-loaded-for-3%C3%A2-years-in-a-canine-experimental-model
#19
Rodolfo B Anchieta, Márcia V M Guimarães, Marcelo Suzuki, Nick Tovar, Estevam A Bonfante, Pablo Atria, Paulo G Coelho
PURPOSE: This work evaluated the nanomechanical properties of bone surrounding submerged and immediately loaded implants after 3 years in vivo. It was hypothesized that the nanomechanical properties of bone would markedly increase in immediately and functionally loaded implants compared with submerged implants. MATERIALS AND METHODS: The second, third, and fourth right premolars and the first molar of 10 adult Doberman dogs were extracted. After 6 months, 4 implants were placed in 1 side of the mandible...
August 17, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28893051/permanent-maxillary-central-incisor-with-dilacerated-crown-and-root-and-c-shaped-root-canal
#20
Vikas Allwani, Mansing Pawar, Ajinkya Pawar, Sayed Abrar, Sangeeta Ambhore
Dilaceration is a rare disturbance in traumatised permanent teeth, which constitutes about 3% of the injuries to developing teeth. It usually occurs as a result of trauma to the deciduous predecessors and results in non axial displacement of the already formed hard tissue portion of the developing crown. Endodontic treatment of such teeth presents a challenge to clinicians, and careful management is required to successfully address the root canal anatomy and other possible variations. The C-shaped canal configuration is most frequently seen in mandibular second molars, but this variation may also occur in mandibular first molars, mandibular third molars, maxillary molars, mandibular first premolars, and even in maxillary lateral incisors, with rare reports of such variations occurring in the maxillary central incisors...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
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