Biomaterial Database

A laser instrument for measuring tooth movements. 1979

H Rydén, and H Bjelkhagen, and U Sandström

An improved apparatus has been constructed which is based upon the laser reflexion method and is used in a highly accurate direct technique of measuring tooth movement without contact. The possibility of making clinical investigations of tooth movements with the equipment has been investigated by testing its various components. The most critical part of the system is the repositioning of the patient, which has been done with an accuracy of +/- 20 micron. The reflected pattern used during 3 months of experiments was the same. The instrument can be used for measurements down to 50 micron.

UI	MeSH Term	Description	Entries
D007834	Lasers	An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.	Masers,Continuous Wave Lasers,Pulsed Lasers,Q-Switched Lasers,Continuous Wave Laser,Laser,Laser, Continuous Wave,Laser, Pulsed,Laser, Q-Switched,Lasers, Continuous Wave,Lasers, Pulsed,Lasers, Q-Switched,Maser,Pulsed Laser,Q Switched Lasers,Q-Switched Laser
D008297	Male		Males
D003748	Dental Equipment	The nonexpendable items used by the dentist or dental staff in the performance of professional duties. (From Boucher's Clinical Dental Terminology, 4th ed, p106)	Equipment, Dental,Dental Equipments,Equipments, Dental
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D014070	Tooth	One of a set of bone-like structures in the mouth used for biting and chewing.	Teeth
D014086	Tooth Mobility	Horizontal and, to a lesser degree, axial movement of a tooth in response to normal forces, as in occlusion. It refers also to the movability of a tooth resulting from loss of all or a portion of its attachment and supportive apparatus, as seen in periodontitis, occlusal trauma, and periodontosis. (From Jablonski, Dictionary of Dentistry, 1992, p507 & Boucher's Clinical Dental Terminology, 4th ed, p313)	Mobilities, Tooth,Mobility, Tooth,Tooth Mobilities
D014087	Tooth Movement Techniques	Orthodontic techniques used to correct the malposition of a tooth or teeth.	Tooth Depression,Tooth Intrusion,Tooth Movement, Minor,Tooth Uprighting,Orthodontic Tooth Movement,Depression, Tooth,Depressions, Tooth,Intrusion, Tooth,Intrusions, Tooth,Minor Tooth Movement,Minor Tooth Movements,Movement Technique, Tooth,Movement Techniques, Tooth,Movement, Orthodontic Tooth,Movements, Orthodontic Tooth,Orthodontic Tooth Movements,Technique, Tooth Movement,Techniques, Tooth Movement,Tooth Depressions,Tooth Intrusions,Tooth Movement Technique,Tooth Movement, Orthodontic,Tooth Movements, Minor,Tooth Movements, Orthodontic,Tooth Uprightings,Uprighting, Tooth,Uprightings, Tooth