LASERS IN ENDODONTICS AND CONSERVATIVE DENTISTRY

Описание: LASERS IN ENDODONTICS AND CONSERVATIVE DENTISTRY
acronym for Light Amplification by the Stimulated Emission of Radiation
uniform and coherent light that is very different from an ordinary light bulb
high-intensity, ostensibly parallel beam of monochromatic(single wavelength) electromagnetic radiation.
Laser light can be focused down to a tiny spot as small as a single wavelength.
stimulated emission predicted by Einstein-1917
photo of the development of the helium- neon laser taken at AT&Ts Bell Laboratories in 1964.
solid, liquid or gas Enclosed within a LASER CAVITY bounded by two perfectly parallel reflectors(mirrors) PUMP SOURCE – high energy radiation pumped into the active medium
pump source is absorbed by active medium until the majority of atoms, ions or molecules are raised to their upper energy state.
cavity as a beam of laser light
High working speed Outstanding precision
Soft, quiet, vibration-free operation As fast as the high-speed turbine CO2 laser cuts and coagulates soft tissue without bleeding No risk of cross-infection
Sterilization of operating field Fewer cracks than with turbine Multiple quadrant dentistry No need for etching Pulsing minimizes charring and thermal necrosis
Lasers are still in the pioneering stage, but there are many current uses.. There are three types of Dental lasers: Surgical Laser (soft tissue) Curing Laser Tooth Laser (hard tissue
traditional surgery for many gum and soft tissue dental applications and is gentler than traditional surgical procedures. This laser used for : Improve treatment results for gum disease Contour gums for smile enhancement Surgically correct oral abnormalities
Surgically assist in arresting herpes lesions and canker sores Assist in biopsies Treat infant tongue/frenum problems which can hinder proper chewing/sucking Treat child/adult frenum problems which can cause speech impediments, gum disease, and teeth to grow apart rather than together
laser spectrum light source is used for rapid teeth whitening and placing all tooth- colored restorations (fillings) and repair procedures. Bonds
light source increases gradually during the curing process to create the best bond available in dentistry today. Appointment length is also reduced because it is 500% more powerful than standard equipment. Less than 1% of dental offices nationwide have this instrument, making it one of the newest tools in dentistry.
TOOTH LASER (hard tissue) Third type of laser is used to remove cavities. But since this laser cannot be used on existing metal fillings, we use micro dentistry. MICRO DENTISTRY one of the greatest advancements in the field of dentistry. offers the ultimate flexibility and capability. It is also the most tooth conservative
candidates for this technique and there is no drilling, no needle, no extra fee, and no pain
reduces appointment length
Desensitize exposed root surfaces Diagnosis of non-cavitated caries To arrest demineralization and promote remineralization of enamel. Debond ceramic orthodontic brackets.
DIAGNOdent can find cavities
detection of occlusal decay
pen- like probe that sends a safe, painless laser beam into the tooth. A numeric display & alarm signals when there are signs of hidden decay
fluorescence within the tooth structure
655 nm
scale readings display
Roughen tooth surfaces , acid etching in preparation for bonding procedure
Treatment dentin hypersensitivity
bleaching Adhesion pit & fissure sealant Most obvious application – controlled removal of dental enamel, dentin, bone or cementum. Replacement of dental drill real
carbon dioxide laser – in oral maxillofacial surgery – Goldman et all. Restricted incising and excising masses from mucosa and gingiva in oral cavity. Vaporize exces tissue gingivoplasty, gingivectomy, labial /lingual frenectomy.
Remove hyperplastic tissue. Remove, control hemorraging vascular lesions hemangiomas.
LASER WAVEL SPECTRAL MODE TYPICAL TYPE ENGTH REGION MAX POWER CO2 10,600nm Mid- CW& 100w infrared Gated CW &superp ulsed Holmiu 2,100 Near Pulsed 15Wavg. m nm infrared Nd:YAG 1,064 Near CW & 100W
Diode 800
Co2 gas as lasig /active medium Delivery system
six to eight articulating mirrors)- cutting & vaporising tissue
laser radiation on enamel – Goldman
thermal side effect
carbon dioxide laser
Transversal stimulation or carbon dioxide, carb.dioxide laser for dental hard tissue ablation.
Er:YAG, Er, Er:YSGG lasers
Nd:YAG -excimer -holmium -argon -diode
Erbium laser
bactricidal
subalative irradiation.
co2 Diode laser radiation
dentin hypersensitivity
pulp vitality
dentin tubules
photopolymerised composites
ultraviolet light.
argon laser
conventional halogen curing light
tooth whitening procedures use hydrogen peroxide or carbamide peroxide
stains tooth enamel
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