This document discusses hazards in the dental laboratory. It covers occupational health and safety issues related to working with dental materials like acrylic resins and risks associated with dental x-rays. Specific hazards mentioned include inhalation of dust from grinding acrylic materials and exposure to radiation from dental x-rays. The document provides references for further guidance on laboratory safety and managing risks from dental materials and imaging.
This document contains an application for admission to Jeju National University in Korea. It requests information from applicants such as personal details, citizenship, education history, preferred housing, and language proficiency. It also provides instructions for applicants to submit recommendation letters, transcripts, passport information and other supporting documents. The application deadlines for spring, fall, summer and winter semesters are listed.
This document is a certificate of medical examination completed by a examining physician. It contains the name, date of birth, address and physical examination results of the applicant, including height, weight, blood pressure, and pulse. It also includes the results of x-ray examinations of the lungs and heart, vaccination records, and laboratory test findings. The physician indicates whether the applicant has any current or past medical issues and provides an assessment of whether the applicant's health is adequate to study in Korea.
The document discusses the history and development of various classification systems for partially dentulous arches. It describes over a dozen systems proposed between 1905-1960, including those by Kennedy, Cummer, Bailyn, Mauk, Beckett, Friedman, Austin-Lidge, Skinner, and Applegate-Kennedy. The Applegate-Kennedy system, which is a modification of Kennedy's original system, is highlighted as being the most universally used today for its simplicity.
7. Hydroxylapatite, also called hydroxyapatite (HA)
Ca10(PO4)6(OH)2
8. Шүдний паалан нь байгалийн шаазан, нано түвшинд үзэгдэх олон өөр давхаргаас бүрддэг.
Паалан нь гурван хэмжээст зохион байгуулалт бүхий нанохэмжээт ГИДРОКСИАПАТИТ
(a,b,d), өндөр зохион байгуулалт микрометр хэмжээт ПРИЗМ-үүдээс тогтдог (c,e).
a, Atomic force microscope and b,c, scanning electron microscope images of the enamel surface.
d, Transmission electron microscope and e, scanning electron microscope images of a cross-section
of the enamel.
9. A nanometre (American spelling: nanometer; symbol nm)
(Ancient Greek: νάνος, nanos, "dwarf";
μέτρον, metrοn, "unit of measurement") is a unit of length
in the metric system, equal to one billionth of a metre.
One nanometer is 0.000000001 meter.
14. Crowns of the teeth contain coronal pulp. The coronal pulp
has six surfaces: the occlusal, the mesial, the distal, the
buccal, the lingual and the floor. Because of continuous
deposition of dentin, the pulp becomes smaller with age.
Radicular pulp is that pulp extending from the cervical
region of the crown to the root apex. They are not always
straight but vary in shape, size and number. The radicular
portion is continuous with the periapical tissues through the
apical foramen or foramina.
Apical foramen is the opening of the radicular pulp into the
periapical connective tissue. The average size is 0.3 to 0.4
mm in diameter. There can be two or more foramina
separated by a portion of dentin and cementum or by
cementum only. Most infections spread through the apical
foramen from the pulp to periapical tissue.
