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https://www.readbyqxmd.com/read/29770240/diagnosis-and-prediction-of-periodontally-compromised-teeth-using-a-deep-learning-based-convolutional-neural-network-algorithm
#1
Jae-Hong Lee, Do-Hyung Kim, Seong-Nyum Jeong, Seong-Ho Choi
Purpose: The aim of the current study was to develop a computer-assisted detection system based on a deep convolutional neural network (CNN) algorithm and to evaluate the potential usefulness and accuracy of this system for the diagnosis and prediction of periodontally compromised teeth (PCT). Methods: Combining pretrained deep CNN architecture and a self-trained network, periapical radiographic images were used to determine the optimal CNN algorithm and weights...
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29767382/direct-pulp-capping-in-primary-molars-using-a-resin-modified-portland-cement-based-material-theracal-compared-to-mta-with-12-month-follow-up-a-randomised-clinical-trial
#2
L Erfanparast, P Iranparvar, A Vafaei
AIM: This study was to compare the success of resin-modified Portland cement-based material (TheraCal) with MTA in direct pulp capping (DPC) of primary molars. METHODS: Symmetrical bilateral primary molars (92) from 46 healthy subjects aged 5-7 years were included in this split-mouth randomised clinical trial. DPC for small non-contaminated pulp exposures using either TheraCal or MTA were randomly performed in symmetrical molars. Thereafter, teeth were restored with amalgam...
May 16, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29765897/anatomical-analysis-of-the-resected-roots-of-mandibular-first-molars-after-failed-non-surgical-retreatment
#3
Jiyoung Yoon, Byeong-Hoon Cho, Jihyun Bae, Yonghoon Choi
Objectives: Understanding the reason for an unsuccessful non-surgical endodontic treatment outcome, as well as the complex anatomy of the root canal system, is very important. This study examined the cross-sectional root canal structure of mandibular first molars confirmed to have failed non-surgical root canal treatment using digital images obtained during intentional replantation surgery, as well as the causative factors of the failed conventional endodontic treatments. Materials and Methods: This study evaluated 115 mandibular first molars...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765569/bolton-discrepancy-in-an-iranian-population-and-its-relation-with-maxillary-lateral-incisors-size
#4
Shabnam Ajami, Hamidreza Fattahi, Mahsa Zare, Peyman Jenabi
Background: Bolton's two main ratios describing the proportional size of upper and lower teeth, could contribute to estimating the excess or deficiency of tooth size necessary to obtain an ideal occlusion. However, the mean Bolton values are not the same among different societies. Determining the prevalence of tooth size deviations from population-specific Bolton indices might help local orthodontists to have a more concise treatment plan. Objective: The study aimed to define the prevalence of clinically significant tooth size discrepancies (TSD) in an Iranian population and to evaluate the influence of lateral incisors' size on this discrepancy...
March 2018: Electronic Physician
https://www.readbyqxmd.com/read/29763357/comparative-evaluation-of-endovac-and-conventional-irrigating-syringe-on-apical-extrusion-in-primary-molars-an-in-vitro-study
#5
Nilaya Reddy Venumbaka, Porselvi Baskaran, Jayanthi Mungara, Madhan Chenchugopal, Arun Elangovan, Poornima Vijayakumar
OBJECTIVES: The present study was undertaken to evaluate and compare the apical extrusion of irrigant and depth of irrigant penetration into dentine using the EndoVac irrigating system and manual irrigation system in primary molar teeth. STUDY DESIGN: Twenty five extracted primary molars satisfying the inclusion and exclusion criteria were divided into two groups with 29 roots in each group with an equal distribution of apical foramen area. The teeth were mounted in pre-weighed glass bottles and the canals were irrigated with 5...
May 15, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29763356/chairside-cad-cam-composite-onlays-for-the-restoration-of-primary-molars
#6
Elisabeth Dursun, Aude Monnier-Da Costa, Christian Moussally
After pulp therapy or with multi-surface caries in primary molars, pre-formed stainless steel crowns are usually placed to ensure tooth longevity. Esthetic alternatives, such as zirconia crowns, have been proposed, but they are invasive. Here we describe two cases of chairside computer-aided design and computer-aided manufacturing (CAD/CAM) technology used to treat extended and/or deep caries on primary molars. A powder-free chairside CAD/CAM system, a milling unit and machinable high-performance composite blocks were used...
May 15, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29763354/randomized-controlled-trial-of-pulpotomy-in-primary-molars-using-mta-and-formocresol-compared-to-3mixtatin-a-novel-biomaterial
#7
Zahra Jamali, Vajiheh Alavi, Ebrahim Najafpour, Naser Asl Aminabadi, Sajjad Shirazi
OBJECTIVE: This study was conducted to compare the efficacy of 3Mixtatin (a combination of simvastatin and 3Mix antibiotic) with MTA and Formocresol for the pulpotomy of primary molars. STUDY DESIGN: 114 children aged 3-6 years old with 150 primary molars were randomly allocated to three groups. MTA, Formocresol or 3Mixtatin were used for Pulpotomies. Hard setting zinc oxide eugenol was used to cover these materials. The teeth were restored with amalgam. Blinded radiographic and clinical examinations were conducted at 6, 12 and 24 months after treatment for the presence of pain, tenderness to palpation and percussion, sinus tract, swelling, presence of internal or external root resorption, inter-radicular radiolucency, and periapical lesion...
May 15, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29761342/impact-of-oral-hygiene-and-socio-demographic-factors-on-dental-caries-in-a-suburban-population-in-nigeria
#8
T A Oyedele, A D Fadeju, Y I Adeyemo, C L Nzomiwu, A M Ladeji
AIM: This was to determine dental caries determinants in the study participants. METHODOLOGY: This was a secondary data study extracted from primary data through a school-based study that recruited students from primary and secondary schools in a suburban population in Nigeria. The variables included age, gender, socio-economic status, oral hygiene status, type of parenting, birth rank, family size and presence of dental caries. The diagnosis of dental caries was based on the World Health Oral Health Survey recommendations while oral hygiene was determined using simplified-oral hygiene index (OHI-S)...
May 14, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29761341/the-prevalence-of-developmental-defects-of-enamel-a-prospective-cohort-study-of-adolescents-in-western-sweden-a-barn-i-tanadvarden-bita-children-in-dental-care-study
#9
B Jälevik, A Szigyarto-Matei, A Robertson
AIM: To describe the prevalence of different types of developmental defects of the enamel (DDE) in varying age-cohorts and habitations, and to analyse if early trauma to the primary teeth and early subsequent serious health problems were related to DDE in the permanent dentition. Dental fear and anxiety, and aesthetic problems as a consequence of DDE were also investigated. METHODS: DDE was registered over 5 years annually in three age cohorts (796 children). The DDE index (FDI Commision on Oral Health, Research and Epidemiology, Int Dent J 42:411-426, 1992) was used...
May 14, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29760818/short-term-crossover-study-on-the-effect-of-orthogonalized-deep-grooved-posterior-artificial-teeth-on-the-masticatory-efficiency-of-complete-denture-wearers
#10
Yuki Hashimoto, Kyoko Sugimoto, Yuki Tanaka, Hikaru Sugimoto, Shogo Minagi
Background: Mastication has been regarded to play an important role in achieving quality daily life for the elderly. On the occlusal surface of posterior artificial teeth, parallel grooves of 1 mm depth and 1 mm width with an inter-groove distance of 2 mm have been found to significantly improve masticatory efficiency on a mechanical simulator. Materials and Methods: In the present study, the effect of the grooved design on masticatory efficiency in edentulous subjects using a short-term crossover trial was evaluated...
2018: Open Dentistry Journal
https://www.readbyqxmd.com/read/29756173/prediction-of-changes-due-to-mandibular-autorotation-following-miniplate-anchored-intrusion-of-maxillary-posterior-teeth-in-open-bite-cases
#11
Hassan E Kassem, Eiman S Marzouk
BACKGROUND: Prediction of the treatment outcome of various orthodontic procedures is an essential part of treatment planning. Using skeletal anchorage for intrusion of posterior teeth is a relatively novel procedure for the treatment of anterior open bite in long-faced subjects. METHODS: Data were analyzed from lateral cephalometric radiographs of a cohort of 28 open bite adult subjects treated with intrusion of the maxillary posterior segment with zygomatic miniplate anchorage...
May 14, 2018: Progress in Orthodontics
https://www.readbyqxmd.com/read/29753781/masticatory-efficiency-in-patients-with-partially-edentulous-dentitions
#12
Zhengwei Shao, Xiaojing Guo, Qian Zhang, Ewald M Bronkhorst, Derong Zou, Nico H J Creugers
OBJECTIVES: to assess associations amongst masticatory performance, dental functional status, and perceived chewing problems with common soft and hard foods. MATERIALS AND METHODS: 387 adult participants with reduced natural dentitions were included and underwent an oral examination, completed a written structured questionnaire and performed a two-color chewing gum test for masticatory efficiency. A multivariate regression model was used to analyze associations between masticatory efficiency and a number of dental conditions, with age, gender and perceived chewing difficulties as background variables...
May 10, 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29752005/large-mammal-diets-and-paleoecology-across-the-oldowan-acheulean-transition-at-olduvai-gorge-tanzania-from-stable-isotope-and-tooth-wear-analyses
#13
Kevin T Uno, Florent Rivals, Faysal Bibi, Michael Pante, Jackson Njau, Ignacio de la Torre
The well-dated Pleistocene sediments at Olduvai Gorge have yielded a rich record of hominin fossils, stone tools, and vertebrate faunal remains that, taken together, provide insight to hominin behavior and paleoecology. Since 2008, the Olduvai Geochronology and Archaeology Project (OGAP) has undertaken extensive excavations in Bed II that have yielded a large collection of early Pleistocene stone tools and fossils. The strata of Lower, Middle and Upper Bed II at Olduvai Gorge capture the critical transition from Oldowan to Acheulean technology and therefore provide an opportunity to explore the possible role of biotic and abiotic change during the transition...
May 8, 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29750624/evaluation-of-the-effect-of-different-root-canal-preparation-techniques-in-primary-teeth-using-cbct
#14
Shahid M Shaikh, Mousumi Goswami
OBJECTIVES: The purpose of this in vitro study was to compare and evaluate the cleaning and shaping efficiency of the rotary Ni-Ti, sonic and conventional file systems for root canal preparation in primary teeth under CBCT. STUDY DESIGN: Seventy five maxillary and mandibular first and second primary molars were divided into three groups of 25 teeth each, according to the canal preparation technique: Group I Rotary file system, Group II Sonic file system, Group III Conventional K files...
May 11, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29750621/effect-of-two-traditional-polyacrylic-acid-conditioners-and-2-chlorhexidine-digluconate-on-cavosurface-microleakage-of-glass-ionomer-restorations
#15
Diva Lugassy, Pnina Segal, Sigalit Blumer, Michal Eger, Asaf Shely, Shlomo Matalon
OBJECTIVES: A lack of appropriate adhesiveness is one of the biggest problems in restorative dentistry today and the main cause of microleakage. This is especially true in pediatric dentistry where moisture control is more difficult to achieve. Glass ionomer restorative materials increase adhesion and decrease microleakage given their chemical adhesion to the remaining tooth substance. Pretreatment improves the adhesion quality. The aim of this study was to assess the microleakage of Glass ionomer restorative materials following application of 20% polyacrylic acid, 10% polyacrylic acid or 2% chlorhexidine digluconate in Class V cavities...
May 11, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29750236/method-for-evaluation-of-transverse-dimension-in-self-ligating-orthodontic-treatment-a-comparative-study
#16
Alejandra Folco, Sandra Benítez-Rogé, Diana Calabrese, Marina Iglesias, María Lumi, Pedro Hetch, María E Mateu
Knowledge of the best way to evaluate changes in transverse dimension produced by orthodontic treatment enables the estimation of potential space that may be generated and optimizes planning. The aim of this study was to compare two methods for measuring changes in transverse dimension following tooth alignment by passive self-ligating system: Method 1 (M1) considering palatal landmarks and Method 2 (M2) considering dental landmarks. Subjects were 12 patients of both sexes, aged 15 to 24 years old, with moderate crowding (Nance discrepancy -4 to -6 mm), who were treated with the Damon System at the Department of Orthodontics of the School of Dentistry, Buenos Aires University...
December 2017: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/29750235/comparison-of-mineral-density-in-molar-incisor-hypomineralization-applying-fluoride-varnishes-and-casein-phosphopeptide-amorphous-calcium-phosphate
#17
Ana M Biondi, Silvina G Cortese, Lucía Babino, Diana E Fridman
The aim of the present work was to evaluate and compare variations in mineral density (MD) using laser-induced fluorescence (LF) after applying 5% Sodium Fluoride Varnish (Duraphat®), 5% Sodium Fluoride Varnish with Tricalcium Phosphate (Clinpro®) or Casein phosphopeptide-amorphous calcium phosphate (Recaldent®) on teeth with Molar Incisor Hypomineralization (MIH). Mineral density of 92 MIH teeth with mild (Mi) and moderate (Mo) lesions was assessed using a DIAGNOdent device (KaVo, Biberach, Germany). LF values were recorded on day 0 (baseline) and on days 15, 30 and 45; the remineralizing agents were applied immediately after LF readings at baseline and on days 15 and 30...
December 2017: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/29748864/the-effect-of-intraosseous-local-anesthesia-of-4-articaine-with-1-100-000-epinephrine-on-pulpal-blood-flow-and-pulpal-anesthesia-of-mandibular-molars-and-canines
#18
Kadkao Vongsavan, Tshering Samdrup, Kanittha Kijsamanmith, Praphasri Rirattanapong, Noppakun Vongsavan
OBJECTIVES: The aim of this study was to determine the effect of intraosseous (IO) anesthesia with 4% articaine and 1:100,000 epinephrine on pulpal blood flow (PBF) and pulpal anesthesia of mandibular first molars and canines in human subjects. MATERIALS AND METHODS: Ten healthy volunteers with intact mandibular first molar and canine were given an osteocentral technique of IO injection using the Quick Sleeper 5 system and 4% articaine with 1:100,000 epinephrine at distal site of mandibular first molar...
May 10, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29744721/the-evaluation-of-mta-and-biodentine-as-a-pulpotomy-materials-for-carious-exposures-in-primary-teeth
#19
Burcu Nihan Çelik, Merve Safa Mutluay, Volkan Arıkan, Şaziye Sarı
OBJECTIVE: This study examined the effects of MTA and Biodentine on the clinical and radiographic success rates of pulpotomies performed on primary teeth with carious pulp exposures. MATERIALS AND METHODS: This study was conducted with 44 mandibular primary molars requiring vital pulpotomy. Carious dentin surrounding the exposure site was used as the inclusion criteria for all teeth, which were randomly divided into two groups according to pulpotomy material [MTA group (n = 24), Biodentine group (n = 20)]...
May 10, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29744192/prevalence-of-apical-periodontitis-and-frequency-of-root-filled-teeth-in-an-adult-sudanese-population
#20
I Ahmed, R W Ali, A M Mudawi
The aim of this study was to estimate the prevalence of teeth with apical periodontitis (AP) and root-filled (RF) teeth in an adult Sudanese population. Panoramic and periapical radiographs were obtained for 200 patients over 18 years of age seeking routine dental care and attending the dental clinics (University of Khartoum) and the dental hospital (University of Science and Technology) for the first time. The periapical status of all teeth (except third molars) was categorized on the basis of the presence or absence of radiographic signs of AP...
August 2017: Clinical and Experimental Dental Research
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