Results 61 to 70 of about 1,402,444 (384)

Vibration characteristic analysis of spur gear systems under tooth crack or fracture

open access: yesJournal of Low Frequency Noise Vibration and Active Control, 2019
Tooth fractures and cracks are common defects in gear transmission systems. Crack propagation paths of the spur gears are acquired using the fracture mechanics theory.
Xu Li   +5 more
semanticscholar   +1 more source

Bonding with Self-Etching Primers - Pumice or Pre-Etch? An In Vitro Study [PDF]

open access: yes, 2010
The objective of this study was to compare the shear bond strengths (SBS) of orthodontic brackets bonded with self-etching primer using different enamel surface preparations. A 2-by-2 factorial study design was used. Sixty human premolars were harvested,
Fitzgerald, Ian J.
core   +1 more source

A Conservative Approach to the Management of a Dental Trauma for Immediate Natural Esthetics [PDF]

open access: yes, 2016
Introduction: The fracture of front teeth is one of the routine presentations of traumatic injuries. The treatment of a fractured tooth involving the pulp includes root canal therapy and post placement followed by core build-up or by the extraction of ...
Jain Patni, M.   +2 more
core   +1 more source

Antibacterial Applications of Black and Violet Phosphorus‐Based Biomaterials

open access: yesAdvanced NanoBiomed Research, EarlyView.
Black and violet phosphorus‐based biomaterials exhibit broad‐spectrum antibacterial efficacy in various infections, including bone, skin, ocular, dental, lung, and sepsis cases. Their antibacterial mechanisms include physical disruption, light‐driven effects, targeted drug delivery, and enhanced composite strategies.
Zhuo Dai   +8 more
wiley   +1 more source

BS-ISO helical gear fatigue life estimation and wear quantitative features analysis [PDF]

open access: yes, 2009
Original article can be found at: http://www3.interscience.wiley.com/ Copyright Blackwell Publishing. DOI: 10.1111/j.1475-1305.2008.00457.xLack of representative theoretical models for gear wear causes difficulties in their useful lifetime prediction ...
Bostjan   +6 more
core   +1 more source

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

open access: yesThe Anatomical Record, EarlyView.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae   +4 more
wiley   +1 more source

Age-Related Pattern of Dental Trauma in a Nigerian Tertiary Health Institution

open access: yesPesquisa Brasileira em Odontopediatria e Clínica Integrada, 2023
Objective: To evaluate the pattern of traumatic dental injuries among children, adolescents, and adults. Material and Methods: This was a cross-sectional analytic study of children and adults who presented with dental trauma. Data utilized for this study
Joan Emien Enabulele   +1 more
doaj  

The lower jaw of Devonian ray‐finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology

open access: yesThe Anatomical Record, EarlyView.
Abstract Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X‐ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian
Ben Igielman   +11 more
wiley   +1 more source

Periodontal Perspectives in the Treatment of Tooth Fractures in Permanent Dentition: A Decision-Making Process

open access: yesApplied Sciences
Tooth fractures represent a very common scenario, mainly among children and young adults, thus affecting permanent dentition most of the time. These fractures may involve either the tooth crown or the root or both, including the dental tissues as well ...
Roberto Rotundo   +5 more
doaj   +1 more source

Trauma to the permanent teeth

open access: yesAustralasian Orthodontic Journal, 1985
Trauma involves approximately 12% of endodontic problems, and the upper central incisor is the most common tooth involved. Great care must be taken in trying to ascertain the extent of the injury, the vitality of the pulp, the colour of the tooth and the
Feiglin Barry
doaj   +1 more source

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