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https://www.readbyqxmd.com/read/28445870/klk4-gene-and-dental-decay-replication-in-a-south-brazilian-population
#1
Tayla Cavallari, Simone Tetu Moyses, Samuel Jorge Moyses, Renata Iani Werneck
OBJECTIVE: The objective of this research was to identify and replicate the participation of KLK4 gene polymorphisms in the susceptibility to dental decay. METHODS: A total of 200 patients were recruited using ICDAS criteria - 100 of them with dental caries and 100 with no history of the disease. Buccal cells were collected and the DNA was extracted and amplified using PCR. RESULTS: During the descriptive analysis, the variables ethnicity, biofilm, and gingivitis and the markers rs2242670 and rs2978642 were statistically significant...
April 27, 2017: Caries Research
https://www.readbyqxmd.com/read/28444559/effectiveness-of-an-interdisciplinary-medical-hospital-admission-center-the-role-of-the-dental-section-in-the-interdisciplinary-system-for-perioperative-management-of-patients-awaiting-surgery
#2
Akifumi Enomoto, Eri Morikage, Takeshi Shimoide, Kazuhide Matsunaga, Suguru Hamada
Perioperative oral functional management (POFM) involves total oral management of a patient before surgery. Considerable benefits have been reported, but POFM remains scarce in medical settings. An interdisciplinary Medical Hospital Admission Center (MHAC) opened in our hospital in December 2014, and has since provided unified perioperative management for patients. This study reports on the clinical system and contributions of the systematized, standardized POFM applied through the MHAC. Patients awaiting surgery undergo oral screening before admission, with patients classified into three groups: red, needing surgical oral management (tooth extraction or other oral surgery) before surgery; yellow, needing non-surgical oral management before surgery, due to the planned surgery or the risk of tooth injury in connection with general anesthesia; or green, patients with good oral hygiene considered capable of suitable oral self-management...
June 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28444013/third-molars-and-premolars-extraction-in-conventional-orthodontics-and-in-treatments-based-on-maxillary-bone-remodeling-with-temporary-anchorage-indications-and-care
#3
Alberto Consolaro
A bone is an anatomic structure in constant remodeling, with different, mutant and wonderfully inconstant designs. With every new and immediate functional demand, there are changes in cortical thickness, trabecular bone density and also in direction and size of trabeculae. Bones' non-stopping search is for adjusting to the functions induced by forces and movements required by a certain life style. Conventional orthodontic planning or with temporary anchorage based on bone remodeling takes into consideration the spaces that are - or may be - occupied by the teeth, in the formation of a functional and esthetic dental arch for the patient...
February 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28443832/protective-buffering-capacity-of-restorative-dental-materials-in-vitro
#4
Markus Fuss, Michael J Wicht, Thomas Attin, Sonja H M Derman, Michael J Noack
PURPOSE: To investigate the buffering capacity of restorative materials during a simulated carious and intrinsic erosive attack. MATERIALS AND METHODS: Cavities with a volume of 130 μl were milled (Cerec MC XL) out of blocks of Ceram X Mono (CM), Quixfil (QX), Filtek Supreme (FS), Apa Fill 3 (AF), an experimental dual-curing composite containing a bioactive glass (EX), Dyract eXtra (DY), Beautifil (BE), Equia Fil (EQ), Telio CAD (TL) (negative control), TheraCal (TC; positive control), and extracted teeth (ED)...
April 25, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28442952/comparison-of-onset-anesthesia-time-and-injection-discomfort-of-4-articaine-and-2-mepivacaine-during-teeth-extractions
#5
Giath Gazal, Rashdan Alharbi, Wamiq Musheer Fareed, Esam Omar, Albraa Badr Alolayan, Hassan Al-Zoubi, Ahmad A Alnazzawi
OBJECTIVE: To investigate the speed of action and injection discomfort of 4% articaine and 2% mepivacaine for upper teeth extractions. MATERIALS AND METHODS: Forty-five patients were included in the articaine 4% group, and 45 in the mepivacaine 2% control group. After all injections, soft and hard tissue numbness was objectively gauged by dental probe at intervals of 15 s. Furthermore, the discomfort of the injections were recorded by the patients after each treatment on standard 100 mm visual analog scales, tagged at the endpoints with "no pain" (0 mm) and "unbearable pain" (100 mm)...
April 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28439695/usefulness-of-telomere-length-in-dna-from-human-teeth-for-age-estimation
#6
Ana Belén Márquez-Ruiz, Lucas González-Herrera, Aurora Valenzuela
Age estimation is widely used to identify individuals in forensic medicine. However, the accuracy of the most commonly used procedures is markedly reduced in adulthood, and these methods cannot be applied in practice when morphological information is limited. Molecular methods for age estimation have been extensively developed in the last few years. The fact that telomeres shorten at each round of cell division has led to the hypothesis that telomere length can be used as a tool to predict age. The present study thus aimed to assess the correlation between telomere length measured in dental DNA and age, and the effect of sex and tooth type on telomere length; a further aim was to propose a statistical regression model to estimate the biological age based on telomere length...
April 24, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28439166/end-stage-renal-disease-not-a-contraindication-for-minor-oral-surgery-protocol-for-the-management-of-oral-surgery-patients-with-esrd-on-hemodialysis
#7
Sneha Pendem, G Lakshmi Narayana, Poornima Ravi
OBJECTIVE: To describe a safe and effective protocol for the management of patients with end stage renal disease (ESRD) undergoing minor oral surgery. SUBJECTS AND METHODS: A prospective cohort study was conducted on all patients with ESRD who were referred for dental consultation. A definite protocol was designed in consultation with the nephrologist to minimize the risk of bleeding and wound healing complications during and after the minor surgical procedures...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28437191/analysis-of-human-tooth-pulp-chamber-temperature-after-670%C3%A2-nm-laser-irradiation-in-vitro-study
#8
Cleide Regina Alves Carrara de Oliveira, Fátima Zanin, Alessandra Cassoni, José Augusto Rodrigues, Landulfo Silveira, Marcos Tadeu Pacheco, Aldo Brugnera
OBJECTIVE: One of the limiting factors of employing laser radiation on dental therapies is the potential of causing thermal injuries to pulp tissues. The purpose of this study was to evaluate intra-chamber temperature increase on extracted human teeth exposed to 670 nm wavelength InGaAlP laser diode radiation. MATERIALS AND METHODS: In vitro intra-chamber temperature measurements of 12 standardized human teeth (incisors, canines, premolars, and molars; n = 3) were taken both before and after laser radiation...
February 16, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28437133/the-impact-of-the-centrifuge-characteristics-and-centrifugation-protocols-on-the-cells-growth-factors-and-fibrin-architecture-of-a-leukocyte-and-platelet-rich-fibrin-l-prf-clot-and-membrane
#9
David M Dohan Ehrenfest, Nelson R Pinto, Andrea Pereda, Paula Jiménez, Marco Del Corso, Byung-Soo Kang, Mauricio Nally, Nicole Lanata, Hom-Lay Wang, Marc Quirynen
L-PRF (leukocyte- and platelet-rich fibrin) is one of the four families of platelet concentrates for surgical use and is widely used in oral and maxillofacial regenerative therapies. The first objective of this article was to evaluate the mechanical vibrations appearing during centrifugation in four models of commercially available table-top centrifuges used to produce L-PRF and the impact of the centrifuge characteristics on the cell and fibrin architecture of a L-PRF clot and membrane. The second objective of this article was to evaluate how changing some parameters of the L-PRF protocol may influence its biological signature, independently from the characteristics of the centrifuge...
April 24, 2017: Platelets
https://www.readbyqxmd.com/read/28434685/influence-of-inhomogeneous-dental-posts-on-stress-distribution-in-tooth-root-and-interfaces-three-dimensional-finite-element-analysis
#10
Mojtaba Mahmoudi, Ali Reza Saidi, Parviz Amini, Maryam Alsadat Hashemipour
STATEMENT OF PROBLEM: In post-core crown restorations, the use of flexible posts concentrates stresses at the dentin and the use of stiff posts concentrates stresses at the interfaces. A class of inhomogeneous materials (called functionally graded materials) has been proposed for posts to resolve the weaknesses of both flexible and rigid posts. PURPOSE: The purpose of this in vitro study was to design an inhomogeneous post and investigate its influence on the stress distribution of post-core crown restorations...
April 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28433071/association-between-the-eruption-of-the-third-molar-and-caries-and-periodontitis-distal-to-the-second-molars-in-elderly-patients
#11
Yu-Hsiang Chou, Pei-Shan Ho, Kun-Yen Ho, Wen-Chen Wang, Kai-Fang Hu
The objective of this study was to verify whether caries and periodontal diseases, when present on the distal surface of the second molars (M2s), are associated with the eruption of the third molars (M3s). In this split-mouth study, we evaluated 70 elderly patients with unilateral maxillary or mandibular M3s who presented to the outpatient clinics of two hospitals. Patients underwent comprehensive oral examinations and radiographical measurements, and we assessed the outcomes of periodontal disease and caries...
May 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28430890/acceptability-comparison-between-hawley-retainers-and-vacuum-formed-retainers-in-orthodontic-adult-patients-a-single-centre-randomized-controlled-trial
#12
Mohammed Saleh, Mohammad Y Hajeer, Dieter Muessig
Background: Hawley retainers (HRs) and vacuum formed retainers (VFRs) are the most commonly used removable retainers in the orthodontic practice. Patients' cooperation in wearing these appliances is affected by the levels of discomfort and oral impairment. The evidence regarding their acceptably among orthodontic patients is limited. Aims: To compare the acceptability of HRs and VFRs over a 6-month period in a group of fixed orthodontic patients. Trial Design: Two-arm parallel-group randomized controlled trial...
April 19, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28430345/healing-response-of-rat-pulp-treated-with-an-injectable-keratin-hydrogel
#13
Lavanya Ajay Sharma, Robert M Love, Mohammad A Ali, Ajay Sharma, Soraia Macari, Avadhoot Avadhani, George J Dias
BACKGROUND: Keratin has shown promising outcomes as a biomaterial due to its inherent bioactivity, biocompatibility and regenerative effects. The effect of keratin on repair and regeneration of dental tissues has never been studied before. Current therapies to treat pulp tissues involve its replacement with inert, synthetic materials that do not have a proper biological function, leading to failure and tooth loss. This study aimed to develop a biocompatible keratin hydrogel (KH) suitable for pulp therapies...
April 20, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/28428567/novel-oral-anticoagulants-and-exodontia-the-evidence
#14
S Nathwani, C Wanis
Background Haemostasis is crucial for the success of oral surgical treatment as bleeding problems can cause complications both pre- and post-operatively. Patients on anticoagulant drugs present a challenge due to their increased risk of bleeding.Aims To review the evidence for the management of oral surgery patients on novel oral anticoagulant therapy.Methods A literature review was conducted in May 2016 of free-text and MESH searches (keywords: apixaban, dabigatran, rivaroxaban and dental extractions) in the Cochrane Library, PubMed and CINAHL...
April 21, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28422594/intentional-replantation-of-an-immature-incisor-with-a-transverse-root-fracture-and-endo-perio-condition-4-year-follow-up
#15
Atsushi Oishi
This case report describes the importance of continual examination for dental trauma and the efficacy of intentional replantation with retrograde root canal filling for a transverse root fracture in an immature incisor accompanied by subsequent periodontal-endodontic disease. In the treatment of traumatically fractured roots in immature incisors, continual examination is indispensable for the final diagnosis because roots in immature teeth are less calcified, resulting in less detailed radiological examinations...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28421115/radix-entomolaris-in-the-mandibular-molar-teeth-of-an-iranian-population
#16
Maryam Kuzekanani, Laurence J Walsh, Jahangir Haghani, Ali Zeynali Kermani
Purpose. Supernumerary roots in permanent mandibular molar teeth make endodontic treatment more complicated. The aim of this study was to determine the prevalence of Radix Entomolaris (RE) in permanent mandibular first and second molars in the population of Kerman, in the southeast of Iran. Materials and Methods. From a collection of 500 mandibular first and second molar teeth extracted over 2015-2016 at dental clinics in Kerman, teeth were scored for an additional distolingual root, and the average root length and root morphology of this extra root were determined using the De Moor classification scheme...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28416847/-effects-of-bioactive-glass-and-extracted-dentin-proteins-on-human-dental-pulp-cells
#17
Y Xin, S N Wang, C Y Cui, Y M Dong
OBJECTIVE: To investigate the proliferation, odontogenic differentiation and mineralization of human dental pulp cells (HDPCs) on bioactive glass(BG) and extracted dentin proteins(EDP). METHODS: Primary HDPCs were isolated from third molars by enzyme digestion and were cultured in Dulbecco's minimum essential medium (DMEM). Then the 4th generation of HDPCs was cultured with DMEM, which contained BG-EDP, BG, and EDP, respectively. Meanwhile HDPCs were cultured in DMEM as control group...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28416535/pneumatic-dental-extractions-an-unusual-cause-of-extensive-cervical-surgical-emphysema
#18
Christopher Thompson, Rohit Gohil
A 50-year-old fit and well man presented to the Accident and Emergency Department in a tertiary centre following lower molar extraction, complaining of voice hoarseness with neck and facial swelling. Clinical examination along with plain film radiography revealed pneumomediastinum and extensive cervical surgical emphysema. He was subsequently admitted for observation and managed conservatively under the ENT team with input from the maxillofacial and anaesthetic teams. With supportive treatment only, the emphysema resolved and he remained well up until discharge...
April 17, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28414986/modelling-dental-implant-extraction-by-pullout-and-torque-procedures
#19
D Rittel, A Dorogoy, K Shemtov-Yona
Dental implants extraction, achieved either by applying torque or pullout force, is used to estimate the bone-implant interfacial strength. A detailed description of the mechanical and physical aspects of the extraction process in the literature is still missing. This paper presents 3D nonlinear dynamic finite element simulations of a commercial implant extraction process from the mandible bone. Emphasis is put on the typical load-displacement and torque-angle relationships for various types of cortical and trabecular bone strengths...
April 11, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28412792/-isolation-of-cariogenic-streptococcus-mutans-and-the-inhibitory-effect-of-egg-yolk-antibody-on-caries
#20
X L Li, Z Zhang, Z X Li, N J Deng, B Zeng, Y M Chen
Objective: To isolate the cariogenic Streptococcus mutans (Sm) strains and study the therapeutical effect of egg yolk antibody (IgY) of the Sm on dental caries development. Methods: Sm strains were isolated from the children's dental plaque samples. Morphological, biochemical and molecular biological methods were applied to identify the serotype, acid producing and adhesion abilities of isolated Sm strains. After inactivation one of the Sm strains was used as antigen to immune laying hens to collect and extract the specific anti-Sm IgY...
April 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
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