Results 61 to 70 of about 174,196 (336)

DENTA: A Dual Enzymatic Nanoagent for Self‐Activating Tooth Whitening and Biofilm Disruption

open access: yesAdvanced Functional Materials, EarlyView.
The nanoapatite with dual enzymes (DENTA) accumulates in dentinal tubules, reducing hypersensitivity caused by dental nerve exposure and facilitating continuous ROS generation through salivary glucose for effective, long‐term whitening. The dentin structures remain non‐destructive due to the low concentration of ROS, demonstrating excellent cell ...
Junseok Kim   +13 more
wiley   +1 more source

Cephalometrıc Evaluatıon In Early Loss Of Prımary Teeth

open access: yesTurkish Journal of Orthodontics, 1995
It’s known among the complications of the early loss of primary teeth are mesial drift of the first molars and distal tipping of the anterior teeth. In this study; lateral cephalometric evaluation carried out regardless of molar relationship on the male ...
Erman Akbulut   +3 more
doaj   +1 more source

Prevalence and change of malocclusions from primary to early permanent dentition: a longitudinal study.

open access: yesAngle Orthodontist, 2015
OBJECTIVE To follow a group of children from primary to early permanent dentition and determine the prevalence, self-correction, and new development of malocclusions; the need for orthodontic treatment; and the possible influences of habits, breathing ...
Lillemor Dimberg   +3 more
semanticscholar   +1 more source

Anisotropic Shear Properties of Organic Interfaces in Bio‐composite Materials

open access: yesAdvanced Functional Materials, EarlyView.
A novel cantilever design enables direct probing of shear properties at single organic interfaces within biocomposite prismatic ultrastructures. By decoupling lateral and torsional shear responses, the method reveals isotropic behavior in Atrina vexillum and pronounced anisotropy in Unio pictorum.
Kian Tadayon   +2 more
wiley   +1 more source

The Antero-posterior Changes of Upper Permanent Canine Teeth during Their Eruption

open access: yesTurkish Journal of Orthodontics, 1988
In this study; the antero-posterior changes of upper permanent canin teeth have been investigated during their eruption at a mean period of 10.26 months.
Oktay Üner, Emel Yücel Eroğlu
doaj   +1 more source

Development and Evolution of Dentition Pattern and Tooth Order in the Skates And Rays (Batoidea; Chondrichthyes)

open access: yesPLoS ONE, 2015
Shark and ray (elasmobranch) dentitions are well known for their multiple generations of teeth, with isolated teeth being common in the fossil record.
C. Underwood   +6 more
semanticscholar   +1 more source

The Early Evolution of Rhynchosaurs [PDF]

open access: yes, 2016
The rhynchosaurian archosauromorphs are an important and diverse group of fossil tetrapods that first appeared during the Early Triassic and probably became extinct during the early Late Triassic (early Norian).
Butler, Richard J.   +2 more
core   +3 more sources

Insight into the Internal Structure of Biogenic, Synthetic and Geological Apatite by Electron Microscopy and X‐Ray Scattering

open access: yesAdvanced Functional Materials, EarlyView.
Apatite occurs in many forms in nature, e.g. in teeth and geological minerals. Internally, biological apatite contains nanocrystals that are also found in synthetically prepared calcium phosphate nanoparticles which are used in biomedicine, e.g. for gene and drug delivery and for bone regeneration. Abstract Calcium phosphate is the inorganic component (
Kathrin Kostka   +3 more
wiley   +1 more source

Consequences of Tooth Loss on Oral Function and need for Replacement of Missing Teeth Among Patients Attending Muhimbili Dental Clinic [PDF]

open access: yes, 2011
Tanzanian oral health services constitute mainly of tooth extractions. Consequently, individuals susceptible to dental caries and periodontal diseases will have a substantial number of missing teeth, which can affect oral function.
Quaker, Andrewleon S
core  

The Effect of Amino Acids on the Formation of Amorphous Calcium Carbonate Nanoparticles

open access: yesAdvanced Functional Materials, EarlyView.
Biomineral formation often proceeds via the assembly of amorphous calcium carbonate (ACC) nanoparticles with narrow size distributions. Using in situ SAXS coupled to a stopped‐flow device, we follow synthetic ACC formation with a 10 ms time resolution and show that amino acids narrow the size distribution at low supersaturation, highlighting their key ...
Lucas Kuhrts   +10 more
wiley   +1 more source

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