Laser etching.
نویسندگان
چکیده
منابع مشابه
ER:YAG Laser Etching of Enamel
This in vitro study compares the etching effects of acid treatment and Er:YAG laser radiation on the enamel of extracted permanent human molars. Oval cavities in the buccal surface were prepared in the conventional manner and then the edges of the cavities were irradiated by Er:YAG radiation. Laser energy was 105 mJ and 208 mJ and the repetition rate was 1 Hz. The radiation was focused by a CaF...
متن کاملIn Vitro Evaluation of Microleakage Around Orthodontic Brackets Using Laser Etching and Acid Etching Methods
OBJECTIVE path of microleakage between the enamel and adhesive potentially allows microbial ingress that may consequently cause enamel decalcification. The aim of this study was to compare microleakage of brackets bonded either by laser or acid etching techniques. MATERIALS AND METHOD The specimens were 33 extracted premolars that were divided into three groups as the acid etching group (grou...
متن کاملLaser-induced liquid-phase jet-chemical etching of metals
In this treatment method laser radiation, which is guided from a co-axially expanding liquid jet-stream, locally initiates on a metal surface a thermochemical etching reaction, which leads to selective material removal. Time-resolved measurements of the electrical potential were correlated with the specific processing parameters to identify conditions for stable and enhanced chemical etching re...
متن کاملWaterjet and laser etching: the nonlinear inverse problem
In waterjet and laser milling, material is removed from a solid surface in a succession of layers to create a new shape, in a depth-controlled manner. The inverse problem consists of defining the control parameters, in particular, the two-dimensional beam path, to arrive at a prescribed freeform surface. Waterjet milling (WJM) and pulsed laser ablation (PLA) are studied in this paper, since a g...
متن کاملin vitro evaluation of microleakage around orthodontic brackets using laser etching and acid etching methods.
path of microleakage between the enamel and adhesive potentially allows microbial ingress that may consequently cause enamel decalcification. the aim of this study was to compare microleakage of brackets bonded either by laser or acid etching techniques.the specimens were 33 extracted premolars that were divided into three groups as the acid etching group (group 1), laser etching with er:yag at...
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ژورنال
عنوان ژورنال: The Review of Laser Engineering
سال: 1988
ISSN: 0387-0200,1349-6603
DOI: 10.2184/lsj.16.476