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https://www.readbyqxmd.com/read/28549551/age-estimation-by-the-cameriere-s-normalized-measurements-cnm-of-the-single-permanent-mandibular-tooth-on-a-panoramic-radiograph
#1
Ivan Galić, Andrea Pacifici, Daniele Carbone, Luciano Pacifici, Ana Jerončić, Roberto Cameriere
In this study Cameriere's normalized measurements (CNM) of a single mandibular tooth were evaluated for age estimation on a sample of ortopantomographies (OPTs) of 2223 Italian children aged between 4 and 15years. Dental maturity was radiographically evaluated by CNM of the seven left permanent mandibular teeth (CNMi=Ai/Li, i=1,…,7); in monoradicular teeth, the distance (Ai, i=1,…,5) between the inner sides of the open apex was measured while in biradicular teeth (Ai, i=6, 7), the sum of the distances between the inner sides of the two open apices was calculated...
May 2017: Legal Medicine
https://www.readbyqxmd.com/read/28547864/sociodemographic-determinants-of-spatial-disparities-in-early-childhood-caries-an-ecological-analysis-in-braunschweig-germany
#2
Frederic Meyer, André Karch, Kristin Maria Schlinkmann, Johannes Dreesman, Johannes Horn, Nicole Rübsamen, Henny Sudradjat, Rainer Schubert, Rafael Mikolajczyk
OBJECTIVES: To identify spatial disparities in dental caries experience (measured by dmft (decayed missing filled teeth) index) of children in the city of Braunschweig and to evaluate whether these disparities can be explained by sociodemographic characteristics. METHODS: We examined the dental health of children aged 3-6 years visiting a daycare centre (DCC) in the metropolitan area of Braunschweig between 2009 and 2014 by combining data on dental health from the annual visits of the local health service with aggregated data on sociodemographic factors for Braunschweig's city districts...
May 26, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28547776/anatomical-relationship-of-maxillary-posterior-teeth-with-the-sinus-floor-and-buccal-cortex
#3
J K Jang, S W Kwak, J H Ha, H C Kim
This study aimed to evaluate the possibility of root fenestration or oroantral communication by evaluating the distance from root apex to the sinus floor and buccal cortex in maxillary posterior teeth by using cone-beam computed tomography (CBCT) images. The study included 2,182 roots of the maxillary posterior teeth from 219 patients after reviewing CBCT images of 462 patients according to the location of roots by two endodontists. The distances from each root apex to the maxillary sinus floor and buccal and palatal cortices were evaluated according to sex and age, and the mean values were compared by one-way analysis of variance and Mann-Whitney U test...
May 26, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28547733/comparative-evaluation-of-post-traumatic-periodontal-ligament-cell-viability-using-three-storage-media
#4
V V Kokkali, V Bendgude, G Sharangpani
AIM: To evaluate the potential of milk, coconut water and buttermilk in maintaining periodontal ligament cell (PDL) viability. METHODS: Freshly extracted premolars (55) were divided into three experimental groups each having 15 teeth and the negative and positive control groups which had 5 teeth per group. The teeth in the experimental groups were immersed in their respective storage medium for a period of 75 min before the laboratory procedures were performed...
May 25, 2017: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28547659/quiescent-adult-stem-cells-in-murine-teeth-are-regulated-by-shh-signaling
#5
Yuko Ishikawa, Mitsushiro Nakatomi, Hiroko Ida-Yonemochi, Hayato Ohshima
The mechanisms regulating the maintenance of quiescent adult stem cells in teeth remain to be fully elucidated. Our aim is to clarify the relationship between BrdU label-retaining cells (LRCs) and sonic hedgehog (Shh) signaling in murine teeth. After prenatal BrdU labeling, mouse pups were analyzed during postnatal day 1 (P1) to week 5 (P5W). Paraffin sections were processed for immunohistochemistry for BrdU, Sox2, Gli1, Shh, Patched1 (Ptch1) and Ki67 and for in situ hybridization for Shh and Ptch1. Dense LRCs, Gli1-(+) cells and Ptch1-(+) cells were co-localized in the outer enamel epithelium of the apical bud and apical dental papilla of incisors...
May 26, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28547182/three-year-survival-of-art-high-viscosity-glass-ionomer-and-resin-composite-restorations-in-people-with-disability
#6
Gustavo F Molina, Denise Faulks, Ignacio Mazzola, Ricardo J Cabral, Jan Mulder, Jo E Frencken
OBJECTIVES: To assess the 3-year cumulative survival rate of atraumatic restorative treatment (ART) and conventional resin composite restorations (CRT) placed in persons with disability. MATERIALS AND METHODS: Patients referred for restorative care to the Haemophilia Foundation special care service were treated by one of two specialists. Patients and/or caregivers were provided with written and verbal information regarding treatment options and selected the alternative they preferred...
May 25, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28547078/infiltrative-local-anesthesia-with-articaine-is-equally-as-effective-as-inferior-alveolar-nerve-block-with-lidocaine-for-the-removal-of-erupted-molars
#7
J Venkat Narayanan, Prashanthi Gurram, Radhika Krishnan, Veerabahu Muthusubramanian, V Sadesh Kannan
AIM: The aim of this study is to assess the efficacy of 4% articaine with 1:100,000 adrenaline given as buccal and lingual infiltration in adult patients undergoing erupted mandibular first and second molar teeth extraction versus inferior alveolar nerve block technique using 2% lignocaine with 1:80,000 adrenaline. MATERIALS AND METHODS: A total of 100 patients undergoing extraction of mandibular posterior teeth were divided into two equally matched groups for the study, out of which 50 patients were given 4% articaine with 1:100,000 adrenaline as buccal and lingual infiltration and 50 patients were given 2% lignocaine with 1:80,000 adrenaline using classic direct inferior alveolar nerve block with lingual and buccal nerve block...
May 25, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28546970/the-impact-of-mother-s-literacy-on-child-dental-caries-individual-data-or-aggregate-data-analysis
#8
Ali-Akbar Haghdoost, Hossein Hessari, Mohammad Reza Baneshi, Maryam Rad, Arash Shahravan
INTRODUCTION: To evaluate the impact of mother's literacy on child dental caries based on a national oral health survey in Iran and to investigate the possibility of ecological fallacy in aggregate data analysis. MATERIALS AND METHODS: Existing data were from second national oral health survey that was carried out in 2004, which including 8725 6 years old participants. The association of mother's literacy with caries occurrence (DMF (Decayed, Missing, Filling) total score >0) of her child was assessed using individual data by logistic regression model...
2017: Journal of Education and Health Promotion
https://www.readbyqxmd.com/read/28546960/microshear-bond-strength-of-nano-bond-adhesive-containing-nanosized-aluminum-trioxide-particles
#9
Yousef Mohammed Althomali, Mohamed Ismail Ebrahim
OBJECTIVES: The present study was conducted to evaluate the effect of nanosized aluminum trioxide (Al2O3) particles when added to the Nano-Bond adhesive system and its effect on the microshear bond strength of nanocomposite resin to dentin. MATERIALS AND METHODS: A newly developed adhesive (Nano-Bond) and one type of light-cured resin restorative material (nanocomposite resin) were used in this study. The occlusal surfaces of extracted human molar teeth were ground perpendicular to the long axis of each tooth to expose a flat dentin surface...
April 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28546957/radiographic-evaluation-of-dental-age-maturity-in-3-17-years-old-saudi-children-as-an-indicator-of-chronological-age
#10
Ayman A Al-Dharrab, Fahad F Al-Sulaimani, Mohamed S Bamashmous, Hosam A Baeshen, Khalid H Zawawi
OBJECTIVE: This study was aimed to evaluate the dental age in Saudi children from panoramic radiographs using the Demirjian method to estimate their chronological age. MATERIALS AND METHODS: This retrospective cross-sectional study consisted of 1902 panoramic radiographs of 955 boys and 947 girls between the ages of 3-17 years. All children were placed in the age group closest to their chronological age. The dental age was scored on all seven left mandibular teeth by calibrated examiners...
April 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28546879/histological-evaluation-and-management-of-rare-case-of-supernumerary-ghost-teeth
#11
Dino Re, Elena Canciani, Corinne Poli, Laura Buccarella, Marilisa Toma, Andrea Carlo Butti, Claudia Dellavia
Supernumerary teeth are teeth that exceed the normal dental formula. Their prevalence in the permanent dentition is 1-14% and they occur more frequently in maxilla with a sex ratio of 2 : 1 in favor of males. They are often associated with syndromes but there are examples of nonsyndromic multiple supernumerary teeth reported in the literature. CBCT is usually the best exam for radiographic diagnosis and treatment planning, because it provides 3D information about location and morphology of supernumerary teeth...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28546619/the-dental-practicality-index-assessing-the-restorability-of-teeth
#12
A Dawood, S Patel
The Dental Practicality Index (DPI) has been designed to describe on a clinical level, the 'practicality' of dental restorative treatment. Applicable to everyday clinical practice, the DPI also aims to assist the clinician in deciding when to seek advice and/or refer a patient for secondary or tertiary dental care. It is hoped that this tool will aid in the systematic assessment of dental restorative problems, enhance communication between collaborating practitioners and help to manage patient expectations before carrying out restorative treatment(s)...
May 26, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28546594/patient-safety-reducing-the-risk-of-wrong-tooth-extraction
#13
P Cullingham, A Saksena, M N Pemberton
Over recent years there has been an increased emphasis on improving patient safety in all branches of medicine, with reducing wrong tooth extraction being a priority in dentistry. The true incidence of wrong tooth extraction is unknown but it is considered an avoidable harm and is a significant source of dental litigation. Interventions to reduce wrong tooth extraction include educational programmes encompassing human factor training, patient assisted identification, the use of checklists, marking of surgical sites and implementation of patient safety guidelines...
May 26, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28545965/comparative-evaluation-of-micron-and-nano-sized-intracanal-medicaments-on-penetration-and-fracture-resistance-of-root-dentin-an-in-vitro-study
#14
Abburi Sireesha, R Jayasree, Sampath Vidhya, Sekar Mahalaxmi, V Sujatha, T S Sampath Kumar
Intracanal medicaments play a vital role in disinfection of root canal system. The aim of this study was to evaluate intratubular penetration and fracture resistance of roots filled with micron- and nano-sized intracanal medicaments: calcium hydroxide (CH), nanocalcium hydroxide (NCH), chitosan (CS) and nanochitosan (NCS). Their antibacterial effect on E. faecalis was tested using agar diffusion method. NCH and NCS were prepared by precipitation method and ionic crosslinking respectively. NCH and NCS particles were spherical, with an average particle size of 102±11...
May 22, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28545871/reinforcing-effect-of-glass-fiber-mesh-on-complete-dentures-in-a-test-model-with-a-simulated-oral-mucosa
#15
Sang-Hui Yu, Seunghan Oh, Hye-Won Cho, Ji-Myung Bae
STATEMENT OF PROBLEM: Studies that evaluated the strength of complete dentures reinforced with glass-fiber mesh or metal mesh on a cast with a simulated oral mucosa are lacking. PURPOSE: The purpose of this in vitro study was to compare the mechanical properties of maxillary complete dentures reinforced with glass-fiber mesh with those of metal mesh in a new test model, using a simulated oral mucosa. MATERIAL AND METHODS: Complete dentures reinforced with 2 types of glass-fiber mesh, SES mesh (SES) and glass cloth (GC) and metal mesh (metal) were fabricated...
May 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28545870/strain-transfer-behavior-of-different-planning-options-for-mandibular-single-molar-replacement
#16
Eduardo Bortolas de Carvalho, Paulo Eduardo Herbst, Adriana Cláudia Lapria Faria, Ricardo Faria Ribeiro, Priscila Paganini Costa, Rodrigo Tiossi
STATEMENT OF PROBLEM: The loss of the first molar and second premolar could lead to mesial movement of the second molar, thus limiting the restoration space for the 2 missing teeth. Placement of a larger first molar is a common choice, but the best implant number and position option remain controversial. PURPOSE: The purpose of this in vitro study was to test different planning options for replacing the mandibular first molar. MATERIAL AND METHODS: Two polyoxymethylene models simulated first molar edentulous spaces of 11 mm (conventional size first molar: control group) and 14 mm (enlarged first molar: all remaining groups other than control)...
May 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28545657/durability-of-a-low-shrinkage-tegdma-hema-free-resin-composite-system-in-class-ii-restorations-a-6-year-follow-up
#17
Jan W V van Dijken, Ulla Pallesen
OBJECTIVE: The objective of this randomized controlled prospective trial was to evaluate the durability of a low shrinkage and TEGDMA/HEMA-free resin composite system in posterior restorations in a 6-year follow up. METHODS: 139 Class II restorations were placed in 67 patients with a mean age of 53 years (range 29-82). Each participant received at random two, as similar as possible, Class II restorations. In the first cavity of each pair the TEGDMA/HEMA-free resin composite system was placed with its 3-step etch-and-rinse adhesive (cmf-els)...
May 22, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28545439/distribution-of-white-spot-lesions-among-orthodontic-patients-attending-teaching-institutes-in-khartoum
#18
Maha Kamal Eltayeb, Yahia Eltayeb Ibrahim, Ikhlas Ali El Karim, Nada Mirghani Sanhouri
BACKGROUND: Fixed orthodontic appliances render teeth cleaning arduous, thus when orthodontic treatment is associated with inadequate oral hygiene practice, development of white spot lesions (WSLs) imposes a significant risk on the dentition. Salivary reservoir of calcium, magnesium, phosphorous and fluoride counteracts demineralization and encourages remineralization providing protection against caries challenge. The investigation of the factors leading to WSLs' development is mandatory for appropriate prevention strategies planning...
May 25, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28544745/fs-laser-ablation-of-teeth-is-temperature-limited-and-provides-information-about-the-ablated-components
#19
Rebeca Ferraz de Menezes, Catherine Malinda Harvey, Marleny Elizabeth Márquez de Martínez Gerbi, Zachary J Smith, Dan Smith, Juan C Ivaldi, Alton Phillips, James W Chan, Sebastian Wachsmann-Hogiu
The goal of this work is to investigate the thermal effects of femtosecond laser (fs-laser) ablation for the removal of carious dental tissue. Additional studies identify different tooth tissues through femtosecond laser induced breakdown spectroscopy (fsLIBS) for the development of a feedback loop that could be utilized during ablation in a clinical setting. Scanning Election Microscope (SEM) images reveal that minimal morphological damages are incurred at repetition rates below the carbonization threshold of each tooth tissue...
May 24, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28544729/comparative-study-of-two-chemical-protocols-for-creating-white-spot-lesions-an-in-vitro-fluorecam-evaluation
#20
Moufida Abufarwa, Amal Noureldin, Phillip M Campbell, Peter H Buschang
AIM: The aim of the present study was to compare the effectiveness and practicality of two commonly-used protocols for white spot lesion creation. METHODS: Sound posterior human teeth were sectioned into halves and randomly allocated into two groups (n=20). Using the FluoreCam system, the enamel surfaces were imaged under standardized conditions, and baseline data (area, intensity, and impact) were recorded. Specimens were covered with an acid-resistant polish, leaving a 2×6-mm enamel window...
May 23, 2017: Journal of Investigative and Clinical Dentistry
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