Sandblasting with Al2O3 Powder in Dental Medicine

2017 ◽  
Vol 68 (3) ◽  
pp. 522-526
Author(s):  
Daniela Jumanca ◽  
Atena Galuscan ◽  
Teodora Stefanescu ◽  
Adina Dumitrache

Minimally invasive dental medicine is a novel trend, increasingly accepted by many practitioners and extension for prevention has gradually been abandoned, being replaced by increasingly conservative interventions. Air Abrasion was developed in 1945 by RB Black who started to investigate alternative pseudo-mechanical methods for the removal of dental tissue by bombarding it with a high-speed particulate flow: aluminium oxide. In the present study, we used 14 teeth extracted for orthodontic purposes or due to periodontal disease. We only selected teeth with early carious lesions (cavitary or non-cavitary), located proximally, cervically or on the occlusal surfaces of pits and fissures. Teeth were sandblasted with the RONDOflex plus (KaVo) equipment which uses the principle of hydro-sandblasting (water sandblasting) 50 mm powder. In the most cases the incipient proximal, cervical or occlusal carious processes were successfully removed, resulting in a small cavity, with bevelled margins and with the surface conditioned for composite application. In two cases, the carious process was only partially removed by Air Abrasion which showed the ineffectiveness of sandblasting in cases where the removal of healthy dental hard tissue needs to be removed. For the complete removal of the carious process, cavity preparation with the diamond drill was required, or, alternatively, opening the occlusal relief with the turbine, followed by sandblasting.

2012 ◽  
Vol 3 (4) ◽  
pp. 340-343 ◽  
Author(s):  
Matheus Coelho Bandéca ◽  
CR Santos ◽  
MR Tonetto ◽  
CD Presoto ◽  
OB Oliveira ◽  
...  

ABSTRACT The laser has been widely used in many specialties of dentistry and several wavelengths have been investigated as a substitute for high-speed handpiece. The purpose of this paper is to review the literature about the use of Er:YAG and Er, Cr:YSGG lasers in cavity preparation for dental tissues. Despite the differences in wavelength, pulse duration and energy, the morphological characteristics of the irradiated dentin surface with these lasers are comparable, as well as its effects as methods of dental caries prevention. Thus, Er:YAG and Er, Cr:YSGG lasers prepared cavities with similar effects on the dental tissue, however, further investigations about ideal irradiation conditions are needed for both lasers. How to cite this article Santos CR, Tonetto MR, Presoto CD, Bandéca MC, Oliveira OB Jr, Calabrez-Filho S, Andrade MF. Application of Er:YAG and Er, Cr:YSGG Lasers in Cavity Preparation for Dental Tissues: A Literature Review. World J Dent 2012;3(4):340-343.


2015 ◽  
Vol 28 (2) ◽  
pp. 92-96 ◽  
Author(s):  
Ilona Wojcik-Checinska ◽  
Agnieszka Mojsym ◽  
Agnieszka Loj-Maczulska ◽  
Renata Chalas

Abstract Proximal surfaces are the second in turn after the occlusal surfaces, as being the most exposed places to the carious process. The specificity of changes and location makes the diagnostic of approximal cavities difficult. The aim of the study was to collect information on possibilities of detection, monitoring and assessment of carious lesions located on proximal surfaces, starting from the early stage. On the base of current literature, chosen methods of diagnosis, from conventional, to advanced technologies were presented. Current literature also suggests that none of the diagnostic methods exclude the possibility of misdiagnosis of proximal caries. Therefore, during the diagnosing of doubtful cases, it is advisable to employ several methods of assessment, with simultaneous individual appraisal of caries risk factors, such as oral hygiene, frequency of eating sweets or the number of active caries foci.


2011 ◽  
Vol 7 (2) ◽  
pp. 161-164 ◽  
Author(s):  
George Chater-Cure ◽  
Caitlin Hoffman ◽  
Jared Knopman ◽  
Samuel Rhee ◽  
Mark M. Souweidane

Object Surgical treatment for periorbital inclusion cysts typically involves a brow, pterional, or partial bicoronal scalp incision for sufficient exposure. The authors have recently employed an endoscopy-assisted technique as an alternative approach intended to minimize the length of the skin incision and avoid scarring in the brow. Methods Children having typical clinical findings of a dermoid cyst located on the hairless forehead were selected to undergo endoscopy-assisted cyst removal. For suspected intradiploic lesions, MR imaging was used to assess osseous involvement. After induction of general anesthesia, a 1–2-cm curvilinear incision was made posterior to the hairline. A 30°-angled endoscope (4 mm) was then used for dissection in the subgaleal compartment. Subgaleal dissection was followed by a circumferential periosteal incision in which the authors used an angled needle-tip unipolar cautery. For lesions within the diploe, a high-speed air drill was used to expose the lesion. Complete removal was accomplished with curettage of either the skull or dural surface. Results Eight patients (5–33 months of age) underwent outpatient endoscopic resection. Seven cysts were extracranial, and 1 cyst extended through the inner table. In all patients complete excision of the cyst was achieved. There was negligible blood loss, no dural violation, and no postoperative infection. There have been no recurrences at a mean follow-up of 15 months. Conclusions Endoscopy-assisted resection of inclusion cysts of the scalp and calvaria is a safe and effective surgical approach. The technique results in negligible incisions with less apparent scarring compared with previously described incisions. This limited-access technique does not appear to be associated with a higher incidence of cyst recurrence.


1972 ◽  
Vol 14 (1) ◽  
pp. 16-21 ◽  
Author(s):  
R. HOLLAND ◽  
S. TAKAYAMA ◽  
J. KOMATSU ◽  
M. RUSSO ◽  
T. SAKAKI ◽  
...  

2008 ◽  
Vol 22 (3) ◽  
pp. 235-241 ◽  
Author(s):  
Lívia Azeredo Alves Antunes ◽  
Rafael Lima Pedro ◽  
Áurea Simone Barrôso Vieira ◽  
Lucianne Cople Maia
Keyword(s):  

1964 ◽  
Vol 42 (5) ◽  
pp. 593-603 ◽  
Author(s):  
Hugh J. Creech ◽  
Evelyn R. Breuninger ◽  
G. A. Adams

Determinations were made of the chemical composition and antitumor properties of several polysaccharide fractions obtained by high speed centrifugation of aqueous extracts of the cells of Serratia marcescens following phenol extraction and trypsin digestion. The use of methods that ensured complete removal of lipid gave polysaccharides containing firmly bound amino acid residues. These were highly effective in causing complete regression of well established solid tumors in mice. The products derived primarily from the cell wall were more potent than the polysaccharides of extracellular and cytoplasmic origins. Extensive differences were also noted in the chemical composition of the polysaccharide complexes isolated from the two sources.


2014 ◽  
Vol 142 (5-6) ◽  
pp. 365-370 ◽  
Author(s):  
Milos Beloica ◽  
Zoran Vulicevic ◽  
Zoran Mandinic ◽  
Ivana Radovic ◽  
Olivera Jovicic ◽  
...  

Goal of contemporary dentistry is to decrease the patient?s discomfort during treatment. Dentists aim to achieve maximum with the newly developed dental materials as well as with new cavity preparation techniques in the shortest time span. Since the development of the first constructed borer (drilling machine) for caries removal, the preparation techniques have considerably changed. The progress of dental materials as well as the cavity preparation techniques has led us to contemporary carbide tungsten and diamond borers that are used with obligatory water cooling. The innovation within this field represents newly developed polymer borers that can detect the difference between carious lesions and healthy tooth structure. In this way the cavity preparation may be performed without damaging dental healthy tissue. This is possible owing to their hardness which is lower than the hardness of intact dentin. Polymer borer preparation is painless with less vibration, while the increase in temperature is negligible. Lasers have been used in clinical dentistry since 1980s so it can be said that they represent a new technology. The function of lasers is based on ablation which requires water. Erbium lasers have shown the highest potential with their ability to produce effective ablation of hard dental tissues. Laser application in dentistry requires special training as well as some protective measures. Laser advantages, compared to traditional preparation techniques, involve the absence of vibration, painless preparation, possibility of preparation without anesthetic and easier patient?s adjustment to dental intervention which is of importance, especially in pediatric dentistry.


2020 ◽  
Vol 46 (12) ◽  
pp. 1907-1912
Author(s):  
Marco Antônio Z. Loureiro ◽  
Marcela R.A. Elias ◽  
Lucas R. Capeletti ◽  
Julio A. Silva ◽  
Patrícia C. Siqueira ◽  
...  

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