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https://www.readbyqxmd.com/read/28523304/optical-coherence-tomography-applications-in-tooth-wear-diagnosis
#1
Veronica MercuŢ, Sanda Mihaela Popescu, Monica Scrieciu, Marina Olimpia Amărăscu, Mihaela Vătu, Oana Andreea Diaconu, Eugen Osiac, Ştefan Mugurel Ghelase
Dental wear represents an irreversible loss of dental hard tissue under the action of physical, chemical and mechanical factors, excluding dental caries and acute trauma. Four clinical forms of dental wear are described: erosion, attrition, abfraction, and abrasion. Most experts agree that in each clinical form multiple etiological factors are involved, one being predominant. Optical coherence tomography (OCT) is a non-invasive optical method characterized by a micronic resolution. The applications of this type of investigation are multiple in the medical field in recent years, and OCT is gaining a growing importance in dentistry...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28521915/a-tall-rostral-hook-in-a-medieval-horse-premolar-tooth
#2
Suvi Viranta, Kristiina Mannermaa
Development of dental abnormalities due to improper occlusal wear is common among modern domestic horses. This phenomenon often is attributed to jaw conformation. Rostral mandibular hooks may develop in horses with underjet or mandibular prognathism, a condition where the lower jaw protrudes forward, beyond the upper jaw. Less abrasive diet, free of phytoliths and matrix-like plant fibers, also may promote enamel and focal overgrowths of equine dentition. Here we report a rostral mandibular hook in a lower premolar tooth of a medieval horse, found in a spring deposit in Levänluhta, Osthrobothnia, Finland...
June 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/28510377/retrospective-study-of-the-survival-and-patient-satisfaction-with-composite-dahl-restorations-in-the-management-of-localised-anterior-tooth-wear
#3
Ayman Aljawad, Jeremy Simon Rees
OBJECTIVE: This retrospective study was undertaken to evaluate the clinical performance of direct composite restorations placed at an increased vertical dimension to manage localised anterior tooth wear using the Dahl approach. SUBJECTS AND METHODS: Two hundred and ninety six restorations were placed at an increased OVD in 41 subjects with localized anterior Tooth Surface Loss (TSL) were included. Survival analysis was carried out at three levels, major failure only, minor failure only and all types of failure...
December 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28502655/earliest-mysticete-from-the-late-eocene-of-peru-sheds-new-light-on-the-origin-of-baleen-whales
#4
Olivier Lambert, Manuel Martínez-Cáceres, Giovanni Bianucci, Claudio Di Celma, Rodolfo Salas-Gismondi, Etienne Steurbaut, Mario Urbina, Christian de Muizon
Although combined molecular and morphological analyses point to a late middle Eocene (38-39 million years ago) origin for the clade Neoceti (Odontoceti, echolocating toothed whales plus Mysticeti, baleen whales, and relatives), the oldest known mysticete fossil dates from the latest Eocene (about 34 million years ago) of Antarctica [1, 2]. Considering that the latter is not the most stemward mysticete in recent phylogenies and that Oligocene toothed mysticetes display a broad morphological disparity most likely corresponding to contrasted ecological niches, the origin of mysticetes from a basilosaurid ancestor and its drivers are currently poorly understood [1, 3-8]...
May 5, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28490846/reliability-of-intra-oral-camera-using-teledentistry-in-screening-of-oral-diseases-pilot-study
#5
Kalyana Chakravarthy Pentapati, Preetinanda Mishra, Mehrshad Damania, Siddharth Narayanan, Garima Sachdeva, Geetanshu Bhalla
OBJECTIVE: Reliability of intra-oral camera using teledentistry in screening of oral diseases. METHODOLOGY: A trained and calibrated examiner used intra-oral camera to capture videos of oral cavity along with clinical examination to evaluate caries, plaque, calculus, tooth wear and fluorosis, stains in children. RESULTS: The mean DT and DMFT were significantly higher with use of intra-oral camera than with clinical examination (p = 0.001 and 0...
April 2017: Saudi Dental Journal
https://www.readbyqxmd.com/read/28478930/erosion-of-canine-teeth-in-babirusa-genus-babyrousa
#6
Alastair A Macdonald
Patterns of wear on the canine teeth were examined in 260 adult male babirusa skulls. Video recordings of 161 adult male babirusas at salt licks in North Sulawesi were viewed for behaviour related to erosion of the canine teeth. Corresponding observations were made of the behaviour of male babirusa in Antwerp and Surabaya Zoos. Most loss of maxillary canine dental tissue was from the ventro-lateral or lateral surface of the tooth, towards its distal end. The teeth were smoothly flattened on a plane approximating to the plane formed on the side of the face by the snout, the zygion and the zygomatic process...
May 3, 2017: Comptes Rendus Biologies
https://www.readbyqxmd.com/read/28477392/validity-of-different-tools-to-assess-sleep-bruxism-a-meta-analysis
#7
REVIEW
Elora Casett, Jéssica C Réus, Juliana Stuginski-Barbosa, André L Porporatti, Maria C Carra, Marco A Peres, Graziela De L Canto, Daniele Manfredini
This systematic review and meta-analysis (MA) aimed to evaluate the diagnostic validity of questionnaires, clinical assessment, and portable diagnostic devices compared to the reference standard method polysomnography (PSG) in assessing sleep bruxism (SB). Two reviewers searched electronic databases for diagnostic test accuracy studies that compared questionnaires, clinical assessment or portable diagnostic devices for SB, with the reference standard method PSG, comprising previous studies from all languages and with no restrictions regarding age, gender or time of publication...
May 6, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28469825/correlation-between-micro-hardness-and-mineral-content-in-healthy-human-enamel
#8
Anna Akkus, Daniel Karasik, Renato Roperto
BACKGROUND: Enamel is the hardest and the stiffest tissue in the human body. The enamel undergoes multidirectional stresses, withstands multimillion chewing cycles, all while protecting the internal dentin and pulp from damage due to mechanical overload and exposure to the harsh chemical environment of the mouth. Raman spectroscopy allows to study enamel mineral content in a non-destructive and site-specific way. While Raman spectroscopy has been applied in other studies to assess tooth mineralization, there are no studies that examine the relationship between micro-hardness and mineral content of the untreated enamel...
April 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28463690/impact-of-wear-and-diet-on-molar-row-geometry-and-topography-in-the-house-mouse
#9
Sabrina Renaud, Ronan Ledevin
OBJECTIVES: Dental evolution affects the geometry of the tooth, but the adaptive relevance of these changes is related to tooth sharpness, complexity, and relief (topography). On a set of laboratory mice, we assessed how wear related to age and food consistency affected molar geometry and topography. DESIGN: Three groups of laboratory inbred mice (C57BL/6J strain) were considered: Four week old mice close to weaning, six month old mice fed on regular rodent pellets, and six month old mice fed on rodent pellets that were powdered and served as jelly...
April 24, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28459247/conservative-functional-and-esthetic-rehabilitation-of-severe-palatal-erosion-class-iv-using-modified-dahl-approach
#10
Aliasger Tunkiwala, Rajeev Chitguppi
This article demonstrates the clinical application of biomechanical and occlusal principles to conservatively provide optimal clinical outcomes in restoring an eroded anterior dentition. The authors manage a challenging case involving limited palatal clearance (ie, deep bite) coupled with palatal erosion and wear by combining the centric relation (CR) and Dahl principles to create anterior interocclusal space to reduce the need for more invasive palatal reduction. The combined use of adhesive restorations-resin composites on the palatal surface and indirect porcelain veneers on the facial/incisal surfaces-through enamel and dentin bonding helped optimize esthetic and functional/biomechanical aspects...
May 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28449756/severe-tooth-wear-has-a-negative-psychological-impact-but-it-is-not%C3%A2-related-to-overall-oral-health-related-quality-of-life
#11
Romina Brignardello-Petersen
No abstract text is available yet for this article.
May 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28441274/-meth-mouth-an-interdisciplinary-review-of-a-dental-and-psychiatric-condition
#12
Cornel N Stanciu, Magdalena Glass, Brian C Muzyka, Oliver M Glass
OBJECTIVE: Chronic methamphetamine (MA) users experience many dental problems, a condition characterized as "meth mouth." These devastating effects on dentition is the main reason why many seek professional help. Here, we discuss the effects of MA on oral health and advocate for improved collaboration between dentists and mental health providers. We also introduce a dental evaluation tool with the goal of improving the quality of care for this often-marginalized patient population. METHODS: A Medline literature search (1985-2016) was conducted with keywords "meth mouth," "methamphetamine AND oral health"; "methamphetamine AND dental"; "methamphetamine AND dentist...
April 24, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28439579/severe-tooth-wear-european-consensus-statement-on-management-guidelines
#13
Bas Loomans, Niek Opdam, Thomas Attin, David Bartlett, Daniel Edelhoff, Roland Frankenberger, Goran Benic, Simon Ramseyer, Peter Wetselaar, Bernadette Sterenborg, Reinhard Hickel, Ulla Pallesen, Shamir Mehta, Subir Banerji, Adrian Lussi, Nairn Wilson
This paper presents European expert consensus guidelines on the management of severe tooth wear. It focuses on the definition of physiological vs pathological tooth wear and recommends diagnosis, prevention, counseling, and monitoring aimed at elucidating the etiology, nature, rate and means of controlling pathological tooth wear. Management decisions are multifactorial, depending principally on the severity and effects of the wear and the wishes of the patient. Restorative intervention is typically best delayed as long as possible...
April 21, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28426029/-erosive-tooth-wear-in-children-and-adolescents-in-the-netherlands-how-big-is-the-problem
#14
D L Gambon, A A Schuller, E M Bronkhorst, G J Truin
According to international research, the prevalence of (erosive) tooth wear among children and adolescents has grown steadily in recent decades. The question was whether this also applies to the Netherlands and what changes in consumption patterns may play a role in this development. From 1998 up to and including 2011, 9 studies have been carried out on the prevalence of (erosive) tooth wear among the young. A meta-analysis of these studies reveals that an increase has also taken place in the Netherlands. Furthermore, a tendency was found for greater prevalence with increasing age...
April 2017: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/28418414/-erosive-tooth-wear-in-children-and-adolescents-in-the-netherlands-how-big-is-the-problem
#15
D L Gambon, A A Schuller, E M Bronkhorst, G J Truin
According to international research, the prevalence of (erosive) tooth wear among children and adolescents has grown steadily in recent decades. The question was whether this also applies to the Netherlands and what changes in consumption patterns may play a role in this development. From 1998 up to and including 2011, 9 studies have been carried out on the prevalence of (erosive) tooth wear among the young. A meta-analysis of these studies reveals that an increase has also taken place in the Netherlands. Furthermore, a tendency was found for greater prevalence with increasing age...
April 2017: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/28418109/sagittal-crest-formation-in-great-apes-and-gibbons
#16
Katharine L Balolia, Christophe Soligo, Bernard Wood
The frequency of sagittal crest expression and patterns of sagittal crest growth and development have been documented in hominoids, including some extinct hominin taxa, and the more frequent expression of the sagittal crest in males has been traditionally linked with the need for larger-bodied individuals to have enough attachment area for the temporalis muscle. In the present study, we investigate sagittal cresting in a dentally mature sample of four hominoid taxa (Pan troglodytes schweinfurthii, Gorilla gorilla gorilla, Pongo pygmaeus pygmaeus and Hylobates lar)...
April 18, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28415544/%C3%AE-pyrophosphate-a-potential-biomaterial-for-dental-applications
#17
A D Anastasiou, S Strafford, O Posada-Estefan, C L Thomson, S A Hussain, T J Edwards, M Malinowski, N Hondow, N K Metzger, C T A Brown, M N Routledge, A P Brown, M S Duggal, A Jha
Tooth hypersensitivity is a growing problem affecting both the young and ageing population worldwide. Since an effective and permanent solution is not yet available, we propose a new methodology for the restoration of dental enamel using femtosecond lasers and novel calcium phosphate biomaterials. During this procedure the irradiated mineral transforms into a densified layer of acid resistant iron doped β-pyrophosphate, bonded with the surface of eroded enamel. Our aim therefore is to evaluate this densified mineral as a potential replacement material for dental hard tissue...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28374451/dental-wear-and-age-grading-at-roonka-south-australia
#18
Judith Littleton
OBJECTIVES: In many hunter-gatherer populations, the teeth are used as a third hand or a tool. Much attention has been paid to wear and its relationship to gendered division of labor, but age is also a significant organizing factor in many societies. In this article, I analyze whether the pattern of wear at Roonka, Australia, reflects the age-graded acquisition of tasks. MATERIALS AND METHODS: The remains analyzed come from Roonka and date from c6000 BP to 150 BP...
April 4, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28371453/morphometry-microstructure-and-wear-pattern-of-neornithischian-dinosaur-teeth-from-the-upper-cretaceous-ihark%C3%A3%C2%BAt-locality-hungary
#19
Attila Virág, Attila Ősi
Teeth of iguanodontian ornithopods and ceratopsians could be remarkably similar, thus the referral of isolated dental material to particular neornithischian clades can be highly problematic. These groups are represented by the rhabdodontid Mochlodon vorosi and the basal coronosaurian Ajkaceratops kozmai in the Upper Cretaceous Csehbánya Formation at Iharkút (western Hungary). Whereas teeth of Mochlodon are common elements at the locality, no dental material belonging to Ajkaceratops was identified until now...
April 3, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28366197/anterior-dental-microwear-textures-show-habitat-driven-variability-in-neandertal-behavior
#20
Kristin L Krueger, Peter S Ungar, Debbie Guatelli-Steinberg, Jean-Jacques Hublin, Alejandro Pérez-Pérez, Erik Trinkaus, John C Willman
The causes of Neandertal anterior tooth wear patterns, including labial rounding, labial scratches, and differential anterior-posterior wear, have been debated for decades. The most common explanation is the "stuff-and-cut" hypothesis, which describes Neandertals clamping down on a piece of meat and slicing a portion close to their lips. "Stuff-and-cut" has been accepted as a general aspect of Neandertal behavior without fully assessing its variability. This study analyzes anterior dental microwear textures across habitats, locations, and time intervals to discern possible variation in Neandertal anterior tooth-use behavior...
April 2017: Journal of Human Evolution
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