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https://www.readbyqxmd.com/read/29222672/morphological-alterations-in-the-position-of-the-mandibular-foramen-in-dentate-and-edentate-mandibles
#1
Niki Matveeva, Lidija Popovska, Biljana Evrosimovska, Elizabeta Chadikovska, Julijana Nikolovska
The technique of inferior alveolar nerve (IAN) block must be based on precise anatomical knowledge regarding the correct position of the mandibular foramen (MF). The aim of the investigation reported here was to determine the anatomic and topographic localization of the MF according to mandibular ramus anatomic landmarks and to identify morphological alterations in the position of the MF and size and shape of the ramus in terms of the impact of tooth socket loss in the molar and premolar region. Seventy-three dry human adult mandibles were divided into two groups according to dental status...
December 8, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/29216024/maxillary-cortical-bone-thickness-in-a-south-eastern-anatolian-population-a-cone-beam-computed-tomography-study
#2
Ozkan Adiguzel, Ceren Aktuna Belgin, Seda Falakaloglu, Suzan Cangul, Zeki Akkus
BACKGROUND The aim of this study was to measure the distance between the maxillary premolar and molar teeth apices to the buccal cortical bone and evaluate differences in gender and age group, using cone beam computed tomography (CBCT). MATERIAL AND METHODS This retrospective study comprised of 451 premolar and molar teeth of one hundred and thirteen patients who were admitted to Dicle University, Faculty of Dentistry, Department of Dentomaxillofacial Radiology for different reasons. Data were analyzed using Student's t-tests and Tukey HSD tests...
December 7, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29215685/micro-ct-evaluation-of-root-and-canal-morphology-of-mandibular-first-premolars-with-radicular-grooves
#3
Emanuele Boschetti, Yara Terezinha Correa Silva-Sousa, Jardel Francisco Mazzi-Chaves, Graziela Bianchi Leoni, Marco Aurélio Versiani, Jesus Djalma Pécora, Paulo Cesar Saquy, Manoel Damião de Sousa-Neto
The aim of this study was to evaluate morphological features of 70 single-rooted mandibular first premolars with radicular grooves (RG) using micro-CT technology. Teeth were scanned and evaluated regarding the morphology of the roots and root canals as well as length, depth and percentage frequency location of the RG. Volume, surface area and Structure Model Index (SMI) of the canals were measured for the full root length. Two-dimensional parameters and frequency of canal orifices were evaluated at 1, 2, and 3 mm levels from the apical foramen...
September 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29215681/oxygen-saturation-in-the-dental-pulp-of-maxillary-premolars-in-different-age-groups-part-1
#4
Carlos Estrela, Giuliano C Serpa, Ana Helena G Alencar, Kely F Bruno, Fernando B Barletta, Wilson T Felippe, Cyntia R A Estrela, João B Souza
The aim of this study was to determine oxygen saturation levels in the dental pulp of maxillary premolars in different age groups. A total of 120 human maxillary premolars with normal dental pulps were selected covering the following age groups: 20-24, 25-29, 30-34, 35-39 and 40-44 years (n=24 each group). Oxygen saturation was assessed using pulse oximetry. Analysis of variance was used to assess differences in oxygen saturation levels and Tukey's test was used to identify the age groups that differed from each other...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29214733/timing-and-sequence-of-emergence-of-permanent-teeth-in-syrian-schoolchildren
#5
Mayssoon Dashash, Noor Al-Jazar
AIM: The aim of the present study was to investigate the timing and sequence of the eruption of permanent teeth in Syrian schoolchildren. METHODS: A total of 1211 children aged 5-13 years were included. Every permanent tooth was scored according to its clinical stage of eruption. The significance of difference was tested using t test. RESULTS: The mean number of erupted teeth in children aged 5-6 years was 2.41 ± 2.68, and reached to 24...
December 6, 2017: Journal of Investigative and Clinical Dentistry
https://www.readbyqxmd.com/read/29208869/prediction-of-un-erupted-canine-and-premolar-tooth-size-in-mixed-dentition-among-bangladeshi-population
#6
R Chokrobrty, T Rafique, R Ghosh, A K Biswas, M Sajedeen, G S Hassan
Accurate prediction of the space available to accommodate the size of the un-erupted canines and premolars plays an important role in mixed dentition in Orthodontics. This Descriptive cross sectional study was carried out in the Department of Orthodontics of Bangabandhu Sheikh Mujib Medical University from July 2014 to June 2015. Dental study models of 140 patients were taken as sample. The sample was consisted of 54 Bangladeshi males and 86 females aged between 12 to 17 years and without any previous orthodontic treatment fully erupted permanent teeth and with no dental anomalies were recruited...
October 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/29208787/assessment-of-marginal-adaptation-and-sealing-ability-of-root-canal-sealers-an-in-vitro-study
#7
Vimal Remy, Vineesh Krishnan, Tisson V Job, Madhavankutty S Ravisankar, C V Renjith Raj, Seena John
AIM: This study aims to compare the marginal adaptation and sealing ability [mineral trioxide aggregate (MTA)-Fillapex, AH Plus, Endofill sealers] of root canal sealers. MATERIALS AND METHODS: In the present study, the inclusion criteria include 45 single-rooted extracted mandibular premolar teeth, with single canal and complete root formation. The sectioning of the samples was done at the cementoenamel junction using a low-speed diamond disc. Step-back technique was used to prepare root canals manually...
December 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29208402/anesthetic-efficacy-of-supine-and-upright-positions-for-the-inferior-alveolar-nerve-block-a-prospective-randomized-study
#8
Chase Crowley, Melissa Drum, Al Reader, John Nusstein, Sara Fowler, Mike Beck
INTRODUCTION: It has been recommended to place patients in an upright position after administration of an inferior alveolar nerve block (IANB), theoretically allowing the anesthetic to diffuse in an inferior direction and resulting in better pulpal anesthesia. The purpose of this study was to compare an upright versus a supine position on the success of pulpal anesthesia when an IANB was administered in asymptomatic teeth. METHODS: One hundred ten asymptomatic subjects were randomly given IANBs by using 2% lidocaine with 1:100,000 epinephrine while they were in an upright position and supine position at 2 different appointments spaced at least 2 weeks apart...
December 2, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29208401/survival-rates-from-fracture-of-endodontically-treated-premolars-restored-with-full-coverage-crowns-or-direct-resin-composite-restorations-a-retrospective-study
#9
Warattama Suksaphar, Danuchit Banomyong, Titalee Jirathanyanatt, Yaowaluk Ngoenwiwatkul
INTRODUCTION: The aim of the present study was to compare the survival rates against fracture of premolar endodontically treated teeth (ETT) restored with resin composite or crowns and to identify risk factors associated with the fracture. METHODS: Data from dental records and radiographs of premolar ETT with postendodontic restorations (ie, resin composite or crowns) were collected between 2012 and 2016 and selected following selected inclusion and exclusion criteria...
December 2, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29207835/sem-evaluation-of-enamel-surface-changes-and-enamel-microhardness-around-orthodontic-brackets-after-application-of-co2-laser-er-cr-ysgg-laser-and-fluoride-varnish-an-in-vivo-study
#10
Tarundeep Kaur, Tulika Tripathi, Priyank Rai, Anup Kanase
Introduction: One of the most undesirable consequences of orthodontic treatment is occurrence of enamel demineralization around orthodontic brackets. Numerous in vitro studies have reported the prevention of enamel demineralization by surface treatment with lasers and fluoride varnish. Aim: To evaluate the changes on the enamel surface and microhardness around orthodontic brackets after surface treatment by CO2 laser, Er, Cr:YSGG laser and fluoride varnish in vivo...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29207804/an-evaluation-of-dental-crowding-in-relation-to-the-mesiodistal-crown-widths-and-arch-dimensions-in-southern-indian-population
#11
Partha Jyoti Das, Winniecia Dkhar, Abhimanyu Pradhan
Introduction: With the advancement in imaging technology, 3D dental computed tomography plays a very significant role in orthodontic treatment and diagnosis. Aim: To evaluate dental crowding in relation to the mesiodistal crown widths and arch dimensions and also to determine the differences of dental crowding among males and females, in Southern Indian population. Materials and Methods: A total of 132 subjects were divided into two groups: crowded and non-crowded, each comprising 66 subjects (33 males and 33 females), aged between 15 and 35 years, who were referred for computed tomography scan of brain to the radiology department, were selected...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29206238/site-level-progression-of-periodontal-disease-during-a-follow-up-period
#12
Yoshiaki Nomura, Toshiya Morozumi, Taneaki Nakagawa, Tsutomu Sugaya, Masamitsu Kawanami, Fumihiko Suzuki, Keiso Takahashi, Yuzo Abe, Soh Sato, Asako Makino-Oi, Atsushi Saito, Satomi Takano, Masato Minabe, Yohei Nakayama, Yorimasa Ogata, Hiroaki Kobayashi, Yuichi Izumi, Naoyuki Sugano, Koichi Ito, Satoshi Sekino, Yukihiro Numabe, Chie Fukaya, Nobuo Yoshinari, Mitsuo Fukuda, Toshihide Noguchi, Tomoo Kono, Makoto Umeda, Osamu Fujise, Fusanori Nishimura, Atsutoshi Yoshimura, Yoshitaka Hara, Toshiaki Nakamura, Kazuyuki Noguchi, Erika Kakuta, Nobuhiro Hanada, Shogo Takashiba, Yasuharu Amitani, Hiromasa Yoshie
Periodontal disease is assessed and its progression is determined via observations on a site-by-site basis. Periodontal data are complex and structured in multiple levels; thus, applying a summary statistical approach (i.e., the mean) for site-level evaluations results in loss of information. Previous studies have shown the availability of mixed effects modeling. However, clinically beneficial information on the progression of periodontal disease during the follow-up period is not available. We conducted a multicenter prospective cohort study...
2017: PloS One
https://www.readbyqxmd.com/read/29203740/optical-density-of-upper-jaw-in-patients-with-malocclusion
#13
Vera D Kuroedova, Evheniy E Vyzhenko, Alexandra N Makarova, Ludmila B Galych, Tatyana A Chikor
INTRODUCTION: The growth and formation of facial skeleton is in interrelation with growth of cervical spine. Computer tomography plays an important role to examine and investigate the density of bony tissue resulting from total increase of osteopenic diseases and diseases of periodontal tissue. The aim of the paper is to compare indices of mineral density of bony tissue of the upper jaw and mineral density of the second cervical vertebra in patients with malocclusion. MATERIALS AND METHODS: 37 orthodontic patients were involved in the investigation...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29201969/the-effect-of-disinfection-with-chlorhexidine-on-the-shear-bond-strength-of-equia-resin-modified-glass-ionomer-cement-to-dentin-in-permanent-teeth-after-two-thermocycling-protocols
#14
Yasmin Sheikh Hasani, Mehrsa Paryab, Aida Saffarpour, Mohammad Javad Kharazifard, Mehdi Shahrabi
Statement of the Problem: There are some concerns regarding the effect of chlorhexidine (CHX) applied for cavity disinfection on the bond strength of adhesive restorations to dentin. Purpose: This study sought to assess the effect of CHX on the shear bond strength (SBS) of Equia resin-modified glass ionomer cement (RMGIC) to dentin in permanent teeth. Materials and Method: In this experimental study, the buccal surface of 84 freshly extracted human premolars was ground to expose the flat dentin...
December 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29201480/cholesterol-granuloma-in-the-maxillary-sinus-are-endodontically-treated-teeth-involved-in-its-etiopathogenesis
#15
Silas Antonio Juvencio de Freitas Filho, Gilberto Gallo Esteves, Denise Tostes Oliveira
Cholesterol granuloma (CG) is a tissue reaction in response to the accumulation of cholesterol crystals rarely found in the maxillary sinus. The etiopathogenesis of maxillary sinus CG remains unclear. We reviewed the literature and added two new reports of cholesterol granuloma in maxillary sinus related to endodontically treated maxillary posterior teeth. The first report refers to a 45-year-old woman diagnosed with rhinitis, who was submitted to endodontic retreatment of maxillary molar, and subsequently showed maxillary sinus opacity with cystic appearance...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29199373/dentoskeletal-and-soft-tissue-changes-in-class-ii-subdivision-treatment-with-asymmetric-extraction-protocols
#16
Guilherme Janson, Eduardo Beaton Lenza, Rodolfo Francisco, Aron Aliaga-Del Castillo, Daniela Garib, Marcos Augusto Lenza
BACKGROUND: This study cephalometrically compared the dentoskeletal and soft tissue changes consequent to one and three-premolar extraction protocols of class II subdivision malocclusion treatment. METHODS: A sample of 126 lateral cephalometric radiographs from 63 patients was selected and divided into two groups. Group 1 consisted of 31 type 1 class II subdivision malocclusion patients treated with asymmetric extractions of two maxillary premolars and one mandibular premolar on the class I side, with an initial mean age of 13...
December 4, 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/29195822/effect-of-crosslinkers-on-bond-strength-stability-of-fiber-posts-to-root-canal-dentin-and-in-situ-proteolytic-activity
#17
Juliana R L Alonso, Fernanda G Basso, Débora L S Scheffel, Carlos Alberto de-Souza-Costa, Josimeri Hebling
STATEMENT OF PROBLEM: Improved stability of the adhesive interface can be obtained using crosslinkers. However, research on the use of crosslinkers in root dentin is lacking. PURPOSE: The purpose of this in vitro study was to evaluate the effect of crosslinkers on the proteolytic activity of root dentin and on the bond strength of resin-cemented fiber posts. MATERIAL AND METHODS: Single root canals were obtained from premolars (n=48) and endodontically treated before being divided into 4 groups: deionized water (control), 0...
November 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29195021/marginal-jawbone-loss-is-associated-with-onset-of-rheumatoid-arthritis-and-is-related-to-plasma-level-of-receptor-activator-of-nuclear-factor-kappa-b-ligand-rankl
#18
Elin Kindstedt, Linda Johansson, Py Palmqvist, Cecilia Koskinen Holm, Heidi Kokkonen, Ingegerd Johansson, Solbritt Rantapää Dahlqvist, Pernilla Lundberg
OBJECTIVES: We investigated whether periodontitis, displayed as marginal jawbone loss, preceded onset of symptoms of RA. Furthermore, we analysed plasma levels of receptor activator of nuclear factor kappa-B (RANKL), a cytokine crucial for bone resorption and of anti-citrullinated peptide antibodies (ACPA) in pre-symptomatic individuals compared with controls. METHODS: Marginal jawbone levels were measured on dental radiographs from the premolar/molar regions of the jaws of 176 subjects of whom 93 had developed RA...
December 1, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29192625/the-force-required-to-fracture-endodontically-roots-restored-with-various-materials-as-intra-orifice-barriers
#19
E Yasa, H Arslan, B Yasa, M Akcay, M Alsancak, H Hatirli
OBJECTIVE: To evaluate the effect of various materials as intra-orifice barriers on the force required fracture roots. MATERIALS AND METHODS: One hundred-thirty five mandibular premolars were decoronated and prepared up to size #40. The root canals were filled and randomly divided into two control and seven experimental groups (n = 15), as follows: Positive control group (the intra-orifice barrier cavity was not prepared), negative control group (the intra-orifice barrier cavity was prepared, but not filled), filling using glass ionomer cement, nano-hybrid composite resin, short fiber-reinforced composite, bulk-fill flowable composite, MTA Angelus, Micro Mega MTA or Biodentine...
October 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29190740/correlation-of-serum-cytokines-chemokines-growth-factors-and-enzymes-with-periodontal-disease-parameters
#20
Jeneen Panezai, Ambereen Ghaffar, Mohammad Altamash, Karl-Gösta Sundqvist, Per-Erik Engström, Anders Larsson
BACKGROUND: Periodontal disease (PD) is characterized by inflammatory tissue destruction in tooth supporting apparatus. Many studies indicate that the underlying pathogenesis is in concordance with rheumatoid arthritis (RA) sharing immune-inflammatory events affect both diseases. The aim of this study was to investigate serum cytokines, chemokines, growth factors, enzymes and costimulatory proteins in association with periodontal conditions in PD and RA subjects. MATERIALS & METHODS: Periodontal examination was performed in RA (n = 38), PD (n = 38) and healthy subjects (n = 14)...
2017: PloS One
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