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https://www.readbyqxmd.com/read/28715096/effect-of-avulsion-storage-media-on-periodontal-ligament-fibroblast-differentiation
#1
İrem Bağ, Sibel Yildirim
BACKGROUND/AIM: An avulsed tooth must be stored in a solution which maintains periodontal ligament (PDL) cell viability. The aim of this study was to compare the effects of Hank's Balanced Salt Solution (HBSS) and milk on the differentiation of PDL fibroblasts. MATERIAL AND METHODS: Eighteen extracted third molars, (n = 3 for each group), were immersed in HBSS, milk, and Dulbecco's Modified Eagle Medium-Ham's F12 (DMEM-F12) at 4 °C for 30-60 min or 12 h. The growth dynamics of PDL fibroblasts were evaluated with cell proliferation graphics and population doubling time (PDT) values...
July 17, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28713761/measurement-of-lingual-cortical-plate-thickness-and-lingual-position-of-lower-third-molar-roots-using-cone-beam-computed-tomography
#2
Anindita Mallick, K C Vidya, Akshat Waran, Sanjeeb Kumar Rout
OBJECTIVE: The objective of the study was to determine the potential risk of tooth/root displacement into the soft tissue during the third molar surgery. While performing third molar surgeries, one of the many complications is displacement of the tooth into the soft tissues. This can be due perforation of the lingual cortical bone during surgery or the position of the tooth root which may be close to the lingual bone. MATERIALS AND METHODS: Retrospective samples of 251 patients were collected who had undergone cone-beam computed tomography (CBCT) for various reasons...
June 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28713735/an-assessment-of-factors-influencing-the-difficulty-in-third-molar-surgery
#3
Pavan Tenglikar, Ashwini Munnangi, Anand Mangalgi, Syed Furqhan Uddin, Santosh Mathpathi, Kundan Shah
BACKGROUND AND OBJECTIVES: Surgical removal of a mandibular impacted third molar is one among the most common oral surgical procedures. The objective of this study was to assess and identify risk indicators influencing extended operation time in relation to the surgical removal of mesioangular impacted mandibular third molar, position A, Class I and to evaluate the incidence of postoperative swelling, trismus, and pain. MATERIALS AND METHODS: A prospective cohort was implemented and the patients who presented for mandibular third molar removal which were impacted in position A, Class I were enlisted for the study...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713729/piezosurgery-versus-rotatory-osteotomy-in-mandibular-impacted-third-molar-extraction
#4
Bharat Bhati, Pankaj Kukreja, Sanjeev Kumar, Vidhi C Rathi, Kanika Singh, Shipra Bansal
AIM: The aim of this study is to compare piezoelectric surgery versus rotatory osteotomy technique in removal of mandibular impacted third molar. MATERIALS AND METHODS: Sample size of 30 patients 18 males, 12 females with a mean age of 27.43 ± 5.27. Bilateral extractions were required in all patients. All the patients were randomly allocated to two groups in one group, namely control group, surgical extraction of mandibular third molar was done using conventional rotatory osteotomy and in the other group, namely test group, extraction of lower third molar was done using Piezotome...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713614/condition-medium-of-cerebrospinal-fluid-and-retinoic-acid-induces-the-transdifferentiation-of-human-dental-pulp-stem-cells-into-neuroglia-and-neural-like-cells
#5
Sara Haratizadeh, Maryam Nazm Bojnordi, Shahram Darabi, Narges Karimi, Mehrdad Naghikhani, Hatef Ghasemi Hamidabadi, Morteza Seifi
Cerebrospinal fluid (CSF) contains several molecules which are essential for neurogenesis. Human dental pulp stem cells (hDPSCs) are putatively neural crest cell-derived that can differentiate into neurons and glial cells under appropriate neurotrophic factors. The aim of this study was to induce differentiation of hDPSCs into neuroglial phenotypes using retinoic acid (RA) and CSF. The hDPSCs from an impacted third molar were isolated by mechanical and digestion and cultured. The cells have treated by 10(-7) µM RA (RA group) for 8 days, 10% CSF (CSF group) for 8 days and RA with CSF for 8 days (RA/CSF group)...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28713425/periapical-status-and-quality-of-root-canal-fillings-in-a-moroccan-subpopulation
#6
Hafsa El Merini, Hind Amarir, Amine Lamzawaq, Mouna Hamza
AIM: The aim of the study was to assess the prevalence of apical periodontitis (AP) and quality of root canal fillings in an adult Moroccan subpopulation. METHODS: In the study 508 patients were included, attending the Conservative Dentistry Clinic at the Faculty of Dentistry of Casablanca. 508 panoramic and 709 periapical radiographs were observed. The periapical status of all teeth (with the exception of third molars) was examined according to Ørstavik's periapical index...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28713112/effect-of-casein-phosphopeptide-amorphous-calcium-phosphate-and-three-calcium-phosphate-on-enamel-microhardness
#7
En Hr Haghgou, Roza Haghgoo, Mohamad R Roholahi, Zahra Ghorbani
AIM: This study aims to investigate the effect of casein phos-phopeptide-amorphous calcium phosphate and three calcium phosphate (CPP-ACP and TCP) on increasing the microhardness of human enamel after induction of erosion. MATERIALS AND METHODS: A total of 26 healthy human-impacted third molar teeth were chosen, and their hardness measured using a microhardness testing machine. The samples were immersed in Coca Cola (pH = 4.7) for 8 minutes. Then, micro-hardness was measured again, and these samples were randomly divided into four groups (two control groups and two experimental groups)...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28711570/anesthetic-management-of-reversible-cerebral-vasoconstriction-syndrome-a-case-report
#8
Hiroshi Hoshijima, Naoki Itoh, Yoshinori Iwase, Hiroshi Nagasaka
Reversible cerebral vasoconstriction syndrome (RCVS) is a group of disorders characterized by prolonged reversible cerebral vasoconstriction, associated with acute-onset, severe, episodic "thunderclap" headaches with or without other neurologic clinical features. We describe the first reported case, to our knowledge, of a patient with RCVS who was managed under general anesthesia in the field of oral and maxillofacial surgery. A 67-year-old woman with a diagnosis of RCVS made 2 months earlier was scheduled to undergo surgical extraction of the mandibular right third molar...
June 14, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28709580/premolar-extraction-as-part-of-orthodontic-treatment-may-result-in%C3%A2-a-small-increase-in-retromolar-space-and-improve-third-molar-angulation
#9
Romina Brignardello-Petersen
No abstract text is available yet for this article.
June 23, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28708643/rare-complication-in-third-maxillary-molar-extraction-dislocation-in-infratemporal-fossa
#10
Andrea Battisti, Paolo Priore, Filippo Giovannetti, Giorgio Barbera, Francesco D'Alessandro, Valentino Valentini
AIM: Removal of impacted third maxillary molar is frequently carried out without difficulties and low rate of intraoperative complications. The rare and particularly challenger to manage it is the third molar dislocation into the infratemporal fossa (IF). In this clinical report, the authors present their solution to manage and resolve this particular complication. METHODS: A 28-year-old woman was referred to the emergency rescue unit of the authors' hospital by her dentistry, after the attempt to extract the left impacted maxillary third molar...
July 13, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28708217/evaluation-of-calcium-ca2-and-hydroxide-oh-ion-diffusion-rates-of-indirect-pulp-capping-materials
#11
Merve Kurun Aksoy, Firdevs Tulga Oz, Kaan Orhan
INTRODUCTION: The aim of this study was to evaluate and compare the calcium (Ca2+) and hydroxide (OH-) ion release of 4 artificially produced pulp capping materials (MTA, Biodentin, TheraCal LC, Calsimol) used for indirect pulp capping treatment. METHODS: In total, 70 freshly extracted human third molar teeth were used for the study. Cavities of extracted teeth were prepared by round burs. The remaining dentin thickness (1 ± 0.3 mm) tissue was measured by a micrometer and cone beam computerized tomography...
July 8, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28692829/effects-of-melatonin-on-the-proliferation-and-differentiation-of-human-dental-pulp-cells
#12
Qin Liu, Wenguo Fan, Yifan He, Fuping Zhang, Xiaoyan Guan, Qianyi Deng, Xianjun Lu, Hongwen He, Fang Huang
OBJECTIVE: Effects of melatonin on the proliferation and differentiation of human dental pulp cells (hDPCs) remain unclear. The purpose of this study was to investigate the effect of melatonin on the proliferation and differentiation of the hDPCs. DESIGN: Primary hDPCs were obtained from the third molar of volunteer aged from 18 to 25. CCK8 assay evaluated the effect of melatonin upon cell proliferation at day 1, 2, 3, 4, 5. After 7days' osteogenic induction with melatonin or vehicle, alkaline phosphatase (ALP) activity was measured with a commercial kit...
June 30, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28691418/associations-between-the-number-of-natural-teeth-and-the-maternal-age-at-childbirth-or-history-of-parity-in-postmenopausal-women-the-2010-2012-korea-national-health-and-nutrition-examination-survey
#13
Kyungdo Han, Insoo Kim, Yong-Gyu Park, Jun-Beom Park
BACKGROUND: The relationship between reproductive factors, including pregnancy and delivery in postmenopausal women, and the number of teeth remains to be revealed. OBJECTIVES: This study evaluated the relationship between childbearing age (age at first and last delivery), parity and the number of natural teeth in postmenopausal women using nationally representative data. MATERIAL AND METHODS: The data from the Korea National Health and Nutrition Examination Survey between 2010 and 2012 were used, and the analysis in this study was confined to a total of 4,060 respondents over 19 years old who had gone through menopause and had no missing values for the reproductive factors and outcome variables...
June 27, 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28690083/analgesic-effects-of-preinjection-low-level-laser-light-therapy-lllt-before-third-molar-surgery-a-double-blind-randomized-controlled-trial
#14
Jacco G C Tuk, Arjen J van Wijk, Ine C Mertens, Zühal Keleş, Jérôme A H Lindeboom, Dan M J Milstein
OBJECTIVE: The aim of this study was to evaluate the analgesic effects of low-level laser therapy (LLLT) on preinjection sites in patients scheduled for third molar removal. STUDY DESIGN: This double-blind randomized controlled trial included 163 healthy patients undergoing third molar extractions. The study participants were randomly divided into an LLLT and a placebo group. Objective and subjective data sets were obtained from physiologic feedback (heart rate and sweat response) and a questionnaire, respectively...
May 4, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28690067/transient-changes-in-milk-production-efficiency-and-bacterial-community-composition-resulting-from-near-total-exchange-of-ruminal-contents-between-high-and-low-efficiency-holstein-cows
#15
Paul J Weimer, Madison S Cox, Tania Vieira de Paula, Miao Lin, Mary Beth Hall, Garret Suen
The objectives of this study were to determine if milk production efficiency (MPE) is altered by near-total exchange of ruminal contents between high- (HE) and low-MPE (LE) cows and to characterize ruminal bacterial community composition (BCC) before exchange and over time postexchange. Three pairs of ruminally cannulated, third-lactation cows were selected whose MPE (energy-corrected milk per unit of dry matter intake) differed over their first 2 lactations. Approximately 95% of ruminal contents were exchanged between cows within each pair...
July 6, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28688821/does-an-association-exist-between-the-presence-of-lower-third-molar-and-mandibular-angle-fractures-a%C3%A2-meta-analysis
#16
REVIEW
Wagner de Sousa Ruela, Vinícius Lima de Almeida, Luciana Monti Lima-Rivera, Pâmela Letícia Dos Santos, André Luís Porporatti, Paulo Henrique Luiz de Freitas, Luiz Renato Paranhos
PURPOSE: The current data suggest that the presence of lower third molars predisposes the patient to a greater risk of mandibular angle fracture. Thus, the present review sought to determine whether an association exists between the presence of a lower third molar and the occurrence of a mandibular angle fracture in adults and to assess the influence of third molar position according to the Pell and Gregory classification. MATERIALS AND METHODS: The present study was a systematic review and meta-analysis of analytical observational studies...
June 13, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28688735/implications-of-resin-based-composite-rbc-restoration-on-cuspal-deflection-and-microleakage-score-in-molar-teeth-placement-protocol-and-restorative-material
#17
Lauren E J McHugh, Ioanna Politi, Rami S Al-Fodeh, Garry J P Fleming
OBJECTIVE: To assess the cuspal deflection of standardised large mesio-occluso-distal (MOD) cavities in third molar teeth restored using conventional resin-based composite (RBC) or their bulk fill restorative counterparts compared with the unbound condition using a twin channel deflection measuring gauge. Following thermocycling, the cervical microleakage of the restored teeth was assessed to determine marginal integrity. METHODS: Standardised MOD cavities were prepared in forty-eight sound third molar teeth and randomly allocated to six groups...
July 5, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28686984/influence-of-stro-1-selection-on-osteogenic-potential-of-human-tooth-germ-derived-mesenchymal-stem-cells
#18
Pinar Ercal, Gorke G Pekozer, Osman Z Gumru, Gamze T Kose, Mustafa Ramazanoglu
Mesenchymal stem cells derived from the human tooth germ (hTGSCs) are a heterogeneous cell population that can differentiate into osteogenic, neurogenic, and adipogenic lineages. The aim of this study was to compare the osteogenic differentiation capacity of STRO-1 positive (STRO-1+) hTGSCs and unsorted heterogeneous hTGSCs and to establish if STRO-1+ cells are more committed to osteogenic differentiation. HTGSCs were isolated from impacted third molar tooth germ tissues of adolescents, and a subpopulation of STRO-1+ hTGSCs was obtained by fluorescence-activated cell sorting...
June 27, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28686332/investigation-of-poly-oligo-ethylene-glycol-diacrylates-as-potential-stationary-phases-in-gc
#19
Alexander Kurganov, Anastasiya Kanateva, Valeriya Shiryaeva, Tamara Popova, Alexander Korolev
Poly[oligo(ethylene glycol)diacrylate]s were investigated as potential candidates for application as stationary phases in capillary gas chromatography. Depending on the molar mass of the monomer, up to three different phase transitions were observed in calorimetric scans of the polymers. Two transitions have been identified as the glass transition and melting of crystallites while the nature of the third effect remains unknown. The new stationary phases demonstrate a good separating ability and selectivity in the viscous-elastic state i...
July 7, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28680711/three-dimensional-measurement-of-periodontal-surface-area-for-quantifying-inflammatory-burden
#20
Sa-Beom Park, So-Youn An, Won-Jeong Han, Jong-Tae Park
PURPOSE: Measurement of the root surface area (RSA) is important in periodontal treatment and for the evaluation of periodontal disease as a risk factor for systemic disease. The aim of this study was to measure the RSA at 6 mm below the cementoenamel junction (CEJ) using the Mimics software (Materialise, Leuven, Belgium). METHODS: We obtained cone-beam computed tomography (CBCT) data from 33 patients who had visited the Department of Oral and Maxillofacial Radiology of Dankook University Dental Hospital...
June 2017: Journal of Periodontal & Implant Science
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