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https://www.readbyqxmd.com/read/29458136/changes-in-anatomic-position-of-root-canal-orifices-in-pluriradicular-teeth-following-re-location-during-endodontic-treatment
#1
Darian Rusu, Petra Surlin, Stratul Stefan-Ioan, Marius Boariu, Calniceanu Horia, Adrian Kasaj, Cosmin Sinescu, Didilescu Andreea
Direct access to the root canals in posterior teeth for endodontic treatment is most frequently facilitated by the straightening of the coronal parts of the root canals, having as a consequence the relocation of the canal orifices on the map of the floor of the pulp chamber (Christie & Thompson, 1994). This procedure intentionally moves the coronal aspect of a canal away from the center of the chamber, while simultaneously removing internal dentin from the pulp chamber walls. The aim of this study was to evaluate the displacement resulting from the relocation of root canal orifices during the initial phase of rotary root canal treatment in molars using the dental operating microscope (DOM) and digital image processing...
February 16, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29457985/tooth-level-versus-patient-level
#2
Spyridon N Papageorgiou
No abstract text is available yet for this article.
February 19, 2018: Journal of Orthodontics
https://www.readbyqxmd.com/read/29457311/bicuspid-axial-wall-height-effect-on-cad-cam-crown-fracture-mode-on-preparations-containing-advanced-total-occlusal-convergence
#3
Matthew Miller, Nicholas DuVall, John Brewster, Michael N Wajdowicz, Ashley Harris, Howard W Roberts
PURPOSE: To evaluate bicuspid axial wall height effect on the fracture mode of adhesively luted, all-ceramic CAD/CAM crowns with a 20° total occlusal convergence (TOC). MATERIALS AND METHODS: Recently extracted premolars were randomly divided into 4 groups (n = 12) with all-ceramic crown preparations accomplished using a high-speed handpiece inserted into a milling device. Specimens were prepared containing occlusogingival axial wall heights of 3, 2, and 1 mm as well as a group containing a flat preparation surface with no axial wall height...
February 18, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29457254/primordial-odontogenic-tumour-report-of-two-cases
#4
Asma Almazyad, Chia-Cheng Li, Roberto Onner Cruz Tapia, Javier Portilla Robertson, David Collette, Sook-Bin Woo
Primordial odontogenic tumour (POT) is a rare mixed odontogenic neoplasm that is composed of primitive ecto-mesenchyme resembling dental papilla, surfaced by odontogenic epithelium resembling inner enamel epithelium, without hard tissue formation. Most reported cases have presented in the posterior mandible as a well-demarcated radiolucency associated with an unerupted tooth in the first two decades of life. AIM: To describe the clinico-pathological features of two more cases of POT. METHODS AND RESULTS: Each presented as an asymptomatic well-delineated radiolucency in the mandible in a 15-year-old female and an 18-year-old male respectively...
February 19, 2018: Histopathology
https://www.readbyqxmd.com/read/29457222/extreme-dentition-does-not-prevent-diet-and-tooth-diversification-within-combtooth-blennies-ovalentaria-blenniidae
#5
Peter J Hundt, Andrew M Simons
The dentition of fishes can be quite striking and is often correlated with a specific diet. Combtooth blennies have long incisiform oral teeth, unlike most actinopterygians. It has been suggested that the long tooth morphology is an adaptation for detritivory, but given the diversity of diets (detritus, coral polyps, polychaetes, and pieces of other fishes), are blenny teeth indeed monomorphic? Or does tooth variation associated with diet still exist at this extreme? To explore tooth and diet diversification, we used a new phylogenetic hypothesis of Blenniidae, measured tooth shape, number, and mode of attachment, and quantified blenniid diet...
February 18, 2018: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/29457125/enhanced-differentiation-of-dental-pulp-cells-cultured-on-microtubular-polymer-scaffolds-in-vitro
#6
Morteza Haeri, Karen Sagomonyants, Mina Mina, Liisa T Kuhn, A Jon Goldberg
Dental caries (tooth decay) is the most common chronic disease. Dental tissue engineering is a promising alternative approach to alleviate the shortcomings of the currently available restorative materials. Mimicking the natural extracellular matrix (ECM) could enhance the performance of tissue engineering scaffolds. In this study, we developed microtubular (~20 μm diameter) polymethyl methacrylate (PMMA) scaffolds resembling the tubular (~2.5 μm diameter) structure of dentin, the collagen-based mineralized tissue that forms the major portion of teeth, to study the effect of scaffold architecture on differentiation of mouse dental pulp cells in vitro ...
June 2017: Regenerative Engineering and Translational Medicine
https://www.readbyqxmd.com/read/29456891/frequency-and-developmental-timing-of-linear-enamel-hypoplasia-defects-in-early-archaic-texan-hunter-gatherers
#7
J Colette Berbesque, Kara C Hoover
Digital photographs taken under controlled conditions were used to examine the incidence of linear enamel hypoplasia defects (LEHs) in burials from the Buckeye Knoll archaeological site (41VT98 Victoria county, Texas), which spans the Early to Late Archaic Period (ca. 2,500-6,500 BP uncorrected radiocarbon). The majority (68 of 74 burials) date to the Texas Early Archaic, including one extremely early burial dated to 8,500 BP. The photogrammetric data collection method also results in an archive for Buckeye Knoll, a significant rare Archaic period collection that has been repatriated and reinterred...
2018: PeerJ
https://www.readbyqxmd.com/read/29456771/pulpal-and-periodontal-tissues-changes-associated-with-le-fort-i-and-sagittal-split-ramus-osteotomies-a-review
#8
REVIEW
Konstantinos Lazaridis, Maria Lazaridou, Athanasios E Athanasiou
Introduction: Le Fort I and sagittal split ramus osteotomies are the most commonly performed orthognathic surgery procedures on the maxilla and mandible, respectively. Techniques: Despite progress in the techniques, these procedures may still be associated with morbidity, expressed as inflammation, inadequate bony union, periodontal damages or in extreme cases even total bone loss. Discussion: Through a comprehensive review of the literature, the influences of maxillary and mandibular surgery on Pulpal Blood Flow (PBF), pulp sensitivity and pulp vitality are examined...
2018: Open Dentistry Journal
https://www.readbyqxmd.com/read/29456635/clinical-effect-of-platelet-rich-fibrin-on-the-preservation-of-the-alveolar-ridge-following-tooth-extraction
#9
Yingdi Zhang, Zheng Ruan, Minhua Shen, Luanjun Tan, Weiqin Huang, Lei Wang, Yuanliang Huang
The aim of the present study was to evaluate the clinical efficacy of platelet-rich fibrin (PRF) in preserving the alveolar ridge following human tooth extraction. A total of 28 patients were divided into two groups: The experimental and control groups (n=14 each). Following tooth extraction, the experimental group was implanted with PRF membrane, whereas the control group was not. The gingival healing effect was assessed at 7 days, 1 and 3 months later. Cone-beam computed tomography was performed immediately and at 3 months following tooth extraction...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456402/hemisection-as-a-conservative-management-of-grossly-carious-permanent-mandibular-first-molar
#10
Shweta Sharma, Rajat Sharma, Abdul Ahad, Narinder Dev Gupta, Surendra Kumar Mishra
Hemisection of a molar denotes removal or separation of a root along with its accompanying part of crown. It is a suitable treatment option when the caries, resorption, perforation, or periodontal damage is restricted to one root while the other root is relatively healthy. Hemisection of the affected tooth helps to retain the tooth structure, surrounding alveolar bone, and may also facilitate the placement of fixed prosthesis. This case report describes the hemisection as a successful treatment method to save a grossly carious mandibular first molar with periodontal and periapical involvement...
January 2018: Journal of Natural Science, Biology, and Medicine
https://www.readbyqxmd.com/read/29456401/management-of-complicated-crown-fracture-by-reattachment-using-fiber-post-minimal-intervention-approach
#11
Ambar W Raut, Vijay Mantri, Vaibhao I Shambharkar, Mitul Mishra
Anterior crown fractures are a common form of traumatic dental injuries that mainly affect the maxillary incisors, especially in children and adolescents. Complicated crown fractures although less common, pose a challenge to the clinician. The main objective while treating such cases is successful pain management and immediate restoration of function, esthetics and phonetics. Since the development of the adhesive dentistry, the patient's own fragment can be used to restore the fractured tooth. Reattachment of fractured tooth fragments offers a viable restorative alternative...
January 2018: Journal of Natural Science, Biology, and Medicine
https://www.readbyqxmd.com/read/29456397/periodontal-flap-surgery-along-with-vestibular-deepening-with-diode-laser-to-increase-attached-gingiva-in-lower-anterior-teeth-a-prospective-clinical-study
#12
Ashu Bhardwaj, Zeba Jafri, Nishat Sultan, Madhuri Sawai, Anika Daing
Background: Chronic periodontitis in lower anterior teeth results in rapidly progressive gingival recession (GR), loss of alveolar bone, decreased vestibular depth (VD) with consequential tooth mobility, and tooth loss. Treatment option for such cases in this esthetically important area of the oral cavity includes extraction followed by implants for which sufficient bone height and mucogingival complex are a prerequisite. Henceforth, an attempt was made to prolong the life of lower anterior teeth and postpone the need for implants by the treatment of chronic periodontitis with periodontal flap surgery followed by vestibular deepening in single surgical procedure...
January 2018: Journal of Natural Science, Biology, and Medicine
https://www.readbyqxmd.com/read/29456305/a-clinicoradiographic-assessment-of-1-metformin-gel-with-platelet-rich-fibrin-in-the-treatment-of-mandibular-grade-ii-furcation-defects
#13
Parul Sharma, Harpreet Singh Grover, Sujata Surendra Masamatti, Neha Saksena
Background: Management of furcation defects is challenging, and constantly newer therapeutic strategies are evolving. Platelet-rich fibrin (PRF) is successfully used alone and in combination with various agents in the furcation defects. Lately, metformin (MF), a second generation biguanide has gained popularity owing to its osteogenic potential. Aims and Objectives: The aim of the present study was to evaluate the clinical and radiographic effectiveness of open flap debridement (OFD) and PRF when compared to OFD + PRF + 1% MF gel in the management of mandibular Grade II furcation defects...
July 2017: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/29456301/correlative-analysis-of-plasma-and-urine-neopterin-levels-in-the-pre-and-post-menopausal-women-with-periodontitis-following-nonsurgical-periodontal-therapy
#14
Jammula Surya Prasanna, Chinta Sumadhura, Parupalli Karunakar, Koduganti Rekharani, Gireddy Himabindu, Ambati Manasa
Context: Periodontitis is an inflammatory condition which is distinguished by the devastation of the supported tooth structures. In such inflammatory conditions, some biomarkers such as neopterin will be secreted and elevated in the body fluids, which can be used as a diagnostic marker for the present and future disease activity. Aims: Assessment of the neopterin as a biomarker in inflammatory conditions such as menopause and periodontitis. Settings and Design: A cross-sectional interventional study...
July 2017: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/29455471/world-traumatic-dental-injury-prevalence-and-incidence-a-meta-analysis-one-billion-living-people-have-had-traumatic-dental-injuries
#15
Stefano Petti, Ulf Glendor, Lars Andersson
Traumatic dental injuries (TDIs) account for a considerable proportion of bodily injuries. Nevertheless, global TDI frequency is unknown, probably because TDI diagnosis is not standardized. This study estimated world TDI frequency. A literature search (publication years 1996-2016) was aimed at covering as many countries, communities, ethnic groups as possible, thus achieving high generalizability. In particular, nonspecific keywords, no language restrictions and large databanks were used. Observational studies reporting proportions of individuals with at least one TDI (prevalence) and who developed TDI (incidence rate) were considered...
February 18, 2018: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/29455344/lower-third-molar-displaced-to-lateral-pharyngeal-space-after-mandibular-angle-fracture-a-case-report
#16
Rodrigo Dos Santos Pereira, Jonathan Ribeiro da Silva, João Paulo Bonardi, Eduardo Hochuli-Vieira
The removal of displaced dental elements from deep anatomical spaces is a condition that requires the knowledge of the region and skills to perform the procedure. The lateral pharyngeal space contains important structures such as the internal carotid artery and close proximity with the cranium basis. The aim of this paper is to report a clinical case of a lower third molar displaced to the lateral pharyngeal space after a mandibular angle fracture and its treatment by surgical intervention. The tooth was removed under general anesthesia by direct approach and the fracture was reduced and fixed with a plate and screws...
February 18, 2018: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29455306/dentinal-tubule-sealing-effects-of-532-nm-diode-pumped-solid-state-laser-gallic-acid-fe-3-complex-and-three-commercial-dentin-desensitizers
#17
Soram Oh, Yu Gu, Hiran Perinpanayagam, Yeon-Jee Yoo, Yoon Lee, Ryun Kyung Kim, Seok Woo Chang, Jongho Lee, Qiang Zhu, Kee Yeon Kum
The purpose of this study was to compare dentinal tubule sealing effects of a 532-nm diode-pumped solid-state (DPSS) laser, gallic acid/Fe3+ complex, and three commercially available dentin desensitizers. Human premolars (n = 44) extracted for orthodontics had standardized cervical cavities prepared, etched (37% phosphoric acid) and randomly assigned to either a control (n = 4), or one of five treatment groups (n = 8/group). Desensitizing treatments were either a 532-nm DPSS laser, gallic acid/Fe3+ complex, oxalate-based Super Seal™ (SS), DIO™ Enamel Coating Pen Pro Tooth (Dio), or adhesive-type Hybrid Coat™ (HC)...
February 17, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29455043/ultra-early-injection-of-low-viscosity-cement-in-vertebroplasty-procedure-for-treating-osteoporotic-vertebral-compression-fractures-a-retrospective-cohort-study
#18
Zhao-Fei Zhang, Dong-Hua Liu, Pei-Yu Wu, Chun-Liang Xie, Feng-Wei Qin, He Huang
OBJECTIVE: To evaluate the clinical effect of ultra-early injection (before the phase of "tooth-paste-like") of low-viscosity cement in percutaneous vertebroplasty (PVP) for treating osteoporotic vertebral compression fractures (OVCFs). METHODS: Two hundred sixty-one patients who had PVP procedures with low-viscosity cement (ultra-early injection: 145, normal injection: 135) were included from July 2010 to July 2016 in our hospital. Visual Analog Scale (VAS), Oswestry Disability Index (ODI), Cobb angle, cement leakage, and adjacent vertebral fractures were evaluated...
February 15, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29454320/obesity-and-caries-in-four-to-six-year-old-english-children-a-cross-sectional-study
#19
Martha Paisi, Elizabeth Kay, Irene Kaimi, Robert Witton, Robert Nelder, Ruth Potterton, Debra Lapthorne
BACKGROUND: Obesity and caries are common conditions in childhood and can have significant implications on children's wellbeing. Evidence into their association remains conflicting. Furthermore, studies examining the ssociation between obesity and caries commonly focus on individual-level determinants. The present study aimed to examine the association between obesity and caries in young English children and to determine the impact of deprivation and area-level characteristics on the distribution of the two conditions...
February 17, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29454307/association-between-residual-teeth-number-in-later-life-and-incidence-of-dementia-a-systematic-review-and-meta-analysis
#20
Bumjo Oh, Dong-Hun Han, Kyu-Tae Han, Xibei Liu, Johnson Ukken, Carina Chang, Kiki Dounis, Ji Won Yoo
BACKGROUND: It has been suggested that tooth loss in later life might increase dementia incidence. The objective of this analysis is to systematically review the current evidence on the relationship between the number of remaining teeth and dementia occurrence in later life. METHODS: A search of multiple databases of scientific literature was conducted with relevant parameters for articles published up to March 25th, 2017. Multiple cohort studies that reported the incidence of dementia and residual teeth in later life were found with observation periods ranging from 2...
February 17, 2018: BMC Geriatrics
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