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Journal articles on the topic 'Burs for turbine and handpiece'

Author: Grafiati

Published: 11 September 2021

Last updated: 4 February 2022

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1

Jetpurwala, Abdulkadeer Mohammedi, and Malay Dikshit. "Chemical vapor deposition diamond dental burs for high speed air turbine handpieces." Surface and Coatings Technology 418 (July 2021): 127244. http://dx.doi.org/10.1016/j.surfcoat.2021.127244.

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2

Boldieri, Thalita, Diego Bussaneli, Jonas Rodrigues, Katia Cardoso, Erika Josgrilberg, and Rita Cordeiro. "Influence of sterilization process on cutting effectiveness and durability of ultrasonic tips." Brazilian Dental Science 18, no. 3 (2015): 10. http://dx.doi.org/10.14295/bds.2015.v18i3.1143.

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<p align="justify"><span style="font-family: Arial, serif;"><span><span lang="en-US"><strong>Objective</strong></span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US">: The aim was to evaluate influence of different sterilization methods on cutting effectiveness and durability of cylindrical ultrasonic burs compared with conventional cylindrical diamond-coated burs. </span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US"><strong>Material </strong></span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US"><strong>and </strong></span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US"><strong>Methods</strong></span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US">: Fifteen conventional cylindrical diamond-coated (1092) (KG Sorensen) coupled to a high-speed turbine, and fifteen cylindrical ultrasonic (8.2137) (CVDentus</span></span></span><sup><span style="font-family: Arial, serif;"><span><span lang="en-US">®</span></span></span></sup><span style="font-family: Arial, serif;"><span><span lang="en-US">) burs coupled to an ultrasound-handpiece were used to perform standardized cavity preparations in healthy bovine tooth fragments, cleaned with rubber cup, pumice stone and water. After every 10 preparations, burs were sterilized 9 times in autoclave (SA), oven (SO), or cleaned with brush, soap and water (C). Fragments were weighed and microphotographs of burs were taken at the beginning and end of experiment. Another 9 conventional diamond-coated and 9 CVD burs underwent the same sterilization cycles in autoclave (SAC), oven (SOC) or washed with soap and water (CC) however, without being used for making cavity preparations, serving as control. Descriptive analyses were made of the values found by weighing and microphotography scores. </span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US"><strong>Results</strong></span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US">: Statistically significant differences (Paired Student’s-</span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US"><em>t </em></span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US">test) were observed among burs after sterilization (p = 0.0001). SO and SA did not influence cutting effectiveness and durability of ultrasonic and conventional diamond-coated burs. The microphotographs showed morphological differences between the burs used for preparation and the control. </span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US"><strong>Conclusion</strong></span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US">: Sterilization by oven and autoclave did not influence cutting effectiveness and durability of CVD and conventional diamond-coated burs. Conventional diamond-coated burs presented greater structural alterations after performing cavity preparations and cleaning/sterilization procedures, irrespective of the process used.</span></span></span></p><p align="justify"><span style="font-family: Arial, serif;"><span><span lang="en-US"><strong>Keywords</strong></span></span></span><span style="font-family: Arial, serif;"><span><span lang="en-US">: cvdentus, sterilization, dental instruments, infection control.</span></span></span></p>

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3

Sehgal, Megha, Payal Sharma, Achint Juneja, Piush Kumar, Anubha Verma, and Vikas Chauhan. "Effect of different stripping techniques on pulpal temperature: in vitro study." Dental Press Journal of Orthodontics 24, no. 1 (2019): 39–43. http://dx.doi.org/10.1590/2177-6709.24.1.039-043.oar.

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ABSTRACT Introduction: Proximal stripping of enamel is a routine clinical procedure employed in orthodontics to create space or for balancing tooth size discrepancies. This procedure may result in heat transfer to the pulp, predisposing it to histopathological changes and necrosis of the pulp tissue. Objective: To measure the temperature changes in the pulp chamber during different stripping procedures. Methods: 80 proximal surfaces of 40 extracted human premolar teeth were stripped using four techniques: diamond burs in air-rotor handpiece with air-water spray; diamond burs in micromotor handpiece, with and without a coolant spray; and hand-held diamond strips. A J-type thermocouple connected to a digital thermometer was inserted into the pulp chamber for evaluation of temperature during the stripping procedure. Results: An increase in the pulpal temperature was observed for all stripping method. Diamond burs in micromotor handpiece without coolant resulted in the higher increase in temperature (3.5oC), followed by hand-held diamond strips (2.8oC), diamond burs in air-rotor with air-water spray (1.9oC); and the smallest increase was seen with diamond burs in micromotor handpiece with coolant (1.65oC). None of the techniques resulted in temperature increase above the critical level of 5.5oC. Conclusion: Frictional heat produced with different stripping techniques results in increase in the pulpal temperature, therefore, caution is advised during this procedure. A coolant spray can limit the increase in temperature of the pulp.

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4

Lima, Luciana Monti, Cristiane Motisuki, Lourdes dos Santos-Pinto, Ary dos Santos-Pinto, and Evaldo Jose Corat. "Cutting characteristics of dental diamond burs made with CVD technology." Brazilian Oral Research 20, no. 2 (2006): 155–61. http://dx.doi.org/10.1590/s1806-83242006000200012.

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The aim of this study was to determine the cutting ability of chemical vapor deposition (CVD) diamond burs coupled to an ultrasonic dental unit handpiece for minimally invasive cavity preparation. One standard cavity was prepared on the mesial and distal surfaces of 40 extracted human third molars either with cylindrical or with spherical CVD burs. The cutting ability was compared regarding type of substrate (enamel and dentin) and direction of handpiece motion. The morphological characteristics, width and depth of the cavities were analyzed and measured using scanning electron micrographs. Statistical analysis using the Kruskal-Wallis test (p < 0.05) revealed that the width and depth of the cavities were significantly greater when they were prepared on dentin. Wider cavities were prepared when the cylindrical CVD bur was used, and deeper cavities resulted from preparation with the spherical CVD bur. The direction of handpiece motion did not influence the size of the cavities, and the CVD burs produced precise and conservative cutting.

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5

Silverstein, Calvin C. "Self-Cooling Cavity Burs for Surgical Drills." Journal of Medical Devices 1, no. 4 (2007): 293–96. http://dx.doi.org/10.1115/1.2815330.

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In a self-cooled drill, an especially designed bur is used to transport heat generated at the cutting edge into the handpiece, where it is dissipated into an air heat sink. The bur contains a sealed cavity partially filled with water, which transports heat via the principle of rotating heat pipe technology. The heat transport capability of burs fitted out as rotating heat pipes was established. A conceptual design for a representative bur was prepared, based on surgical drill sculpting criteria. It appears that a self-cooled surgical drill for sculpting can limit bone temperatures below levels for the initiation of thermal damage in bone, nerve, and brain tissue, without the need to employ an externally applied coolant.

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6

Siegel, S. C., and J. A. von Fraunhofer. "EFFECT OF HANDPIECE LOAD ON THE CUTTING EFFICIENCY OF DENTAL BURS." Machining Science and Technology 1, no. 1 (1997): 1–13. http://dx.doi.org/10.1080/10940349708945634.

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7

Dyson, J. E., and B. W. Darvell. "Dental air turbine handpiece performance testing." Australian Dental Journal 40, no. 5 (1995): 330–38. http://dx.doi.org/10.1111/j.1834-7819.1995.tb04823.x.

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8

Nishi, Yasuyuki, Hikaru Fushimi, Kazuo Shimomura, and Takeshi Hasegawa. "Performance and Internal Flow of a Dental Air Turbine Handpiece." International Journal of Rotating Machinery 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/1826489.

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An air turbine handpiece is a dental abrasive device that rotates at high speed and uses compressed air as the driving force. It is characterized by its small size, light weight, and painless abrading due to its high-speed rotation, but its torque is small and noise level is high. Thus, to improve the performance of the air turbine handpiece, we conducted a performance test of an actual handpiece and a numerical analysis that modeled the whole handpiece; we also analyzed the internal flow of the handpiece. Results show that experimental and calculated values were consistent for a constant speed load method with the descending speed of 1 mm/min for torque and turbine output. When the tip of the blade was at the center of the nozzle, the torque was at its highest. This is likely because the jet from the nozzle entered the tip of the blade from a close distance that would not reduce the speed and exited along the blade.

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9

Gonzaga, Carla Castiglia, Ruth Peggy Bravo, Thiago Vinícius Pavelski, et al. "Enamel and Dentin Surface Finishing Influence on the Roughness and Microshear Bond Strength of a Lithium Silicate Glass-Ceramic for Laminate Veneers." International Scholarly Research Notices 2015 (September 7, 2015): 1–7. http://dx.doi.org/10.1155/2015/243615.

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Objectives. This study evaluated the influence of cavity surface finishing with diamond burs of different grit mounted on high-speed turbine and ultrasound on the roughness and microshear bond strength (MBS) of a lithium silicate glass-ceramic to enamel and dentin. Methods. Enamel and dentin specimens were divided into seven groups, according to the type of surface finishing: 1200-grit sandpaper (control), two different brands of medium-grit and fine-grit diamond burs in a high-speed turbine; medium-grit and fine-grit CVD (chemical vapor deposition) tips in an ultrasonic device. Roughness parameters (n=5) and MSBS to a glass-ceramic (n=10) were determined. Data were analyzed using ANOVA and Tukey’s test (α = 5%). Results. Control group showed lower mean roughness readings and groups that used medium-grit diamond burs showed the highest mean roughness values. Regarding MSBS, there was no statistical difference when comparing the groups gritted with the same brand of medium- and fine-grit burs and tips. Conclusions. Cavity surface finishing influenced the roughness parameters and MSBS of a glass-ceramic to enamel and dentin. Medium-grit diamond burs in high-speed turbine showed the highest mean roughness values. Fine-grit CVD tips in ultrasound presented the highest MSBS values for both enamel and dentin.

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10

Ren, Hai Tao, Xiao Fei Song, and Xiao Feng Zhang. "Dental Grinding of Lithium Disilicate Ceramic Prostheses Using High-Speed Rotary Cutting Instruments in In Vitro Oral Adjusting." Advanced Materials Research 1136 (January 2016): 36–41. http://dx.doi.org/10.4028/www.scientific.net/amr.1136.36.

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Oral adjusting of ceramic prostheses involving abrasive machining using dental high-speed rotary cutting instruments is a central process in restorative dentistry, because this process affects not only restorative quality but also patients’ comfort. However, the dental grinding process, especially dental grinding of high-strength ceramic prostheses, is less understood in clinical dentistry. This paper presents dental grinding of an innovative high-strength lithium disilicate ceramic in in vitro oral adjusting regime using a dental high-speed electric handpiece and diamond burs. The dental abrasive machining characteristics were quantitatively evaluated in terms of normal and tangential forces, force ratio, and specific grinding energy as functions of clinically relevant dental grinding variables including depth of cut and feed rate and feed direction of burs. The results showed that the dental tangential and normal forces and specific grinding energy exhibited significant dependences on depth of cut, feed rate and direction of burs, but revealed significantly small scales compared to engineering machining regime. Clinical implication was given that down grinding undoubtedly reduced the abrasive adjusting forces to relieve patients’ discomfort in oral regime. Moreover, dentists must be cautious in dental abrasive adjusting of the lithium disilicate ceramic prostheses at or beyond the specific material removal rate of 2.4 mm3/min due to significantly large forces and vibrations.

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11

Nakamura, Keisuke, Yusuke Katsuda, Shuhei Ankyu, et al. "Cutting efficiency of diamond burs operated with electric high-speed dental handpiece on zirconia." European Journal of Oral Sciences 123, no. 5 (2015): 375–80. http://dx.doi.org/10.1111/eos.12211.

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12

Wei, M., JE Dyson, and BW Darvell. "Factors Affecting Dental Air-Turbine Handpiece Bearing Failure." Operative Dentistry 37, no. 4 (2012): E1—E12. http://dx.doi.org/10.2341/11-087-l.

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SUMMARY Objectives To investigate the influence of various factors on air-turbine handpiece bearing failure through developing standard protocols for testing the bearing longevity. Methods Groups of four air-turbine assemblies (Synea TA-98, W&H, Dentalwerk, Bürmoos, Austria) were subjected repeatedly to a full binary combinatorial set of operating conditions: with and without lubrication, simulated clinical loading, and corrosion protection, all with autoclaving, to the point of failure. A control set was lubricated only. Lubrication (Assistina, W&H), autoclaving (ST-Im30b, Eschmann Bros & Walsh, West Sussex, England), simulated clinical loading (0.56 N at 45° to the turbine axis, after autoclaving), and corrosion protection during autoclaving (magnesium sacrificial anode) were used as required. Free-running speed (Hz) and bearing resistance (μNm) were determined (Darvell-Dyson testing machine) at baseline and after every 10 cycles until turbine failure. Three-way analysis of variance (lubrication × loading × corrosion protection) of log(cycles to failure), with α = 0.05, was used. Results All autoclaved turbines had failed by 560 cycles, while the controls failed at 960-1000 cycles. All three main effects were significant: loading (p&lt;10−6), lubrication (p&lt;0.0002), and corrosion protection (p&lt;0.02), as was the interaction lubrication × loading (p&lt;10−6). No other interaction attained significance. Conclusions Running under load was the most important factor affecting bearing longevity. While autoclaving clearly has a detrimental effect, lubrication effectively increases longevity. A sacrificial anode may be economically worthwhile to extend life further, but low-load usage patterns, as generally instructed, are confirmed as beneficial.

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13

Pegg, Jane E., Chad Lothamer, and Jennifer E. Rawlinson. "The Air-Driven Dental Unit: Form and Function at a Mechanical Level." Journal of Veterinary Dentistry 36, no. 3 (2019): 202–8. http://dx.doi.org/10.1177/0898756419892635.

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The goal of this article is to provide an overview at a mechanical level of how the dental machine functions. A description of the low-speed handpiece and its air-driven micromotor as well as the high-speed handpiece and turbine will be provided. The compressor, rheostat, air–water syringe, suction, fiber-optic light, and handpiece couplings will also be discussed. It is important to understand the function of equipment to allow for troubleshooting problems and understanding maintenance requirements to keep equipment functioning optimally.

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14

KENYON, BRIAN J., IAN VAN ZYL, and KENNETH G. LOUIE. "Comparison of cavity preparation quality using an electric motor handpiece and an air turbine dental handpiece." Journal of the American Dental Association 136, no. 8 (2005): 1101–5. http://dx.doi.org/10.14219/jada.archive.2005.0313.

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15

Zhang, Yi-Yin, Xiao-Fei Song, and Hong-Lei Guo. "Surface characteristics of dental resin nanoceramic in in vitro finishing with dental handpiece and rotary burs." Surface Topography: Metrology and Properties 8, no. 2 (2020): 025016. http://dx.doi.org/10.1088/2051-672x/ab8c95.

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16

Souza-Gabriel, A. E., F. L. B. Amaral, J. D. Pécora, R. G. Palma-Dibb, and S. A. M. Corona. "Shear Bond Strength of Resin-modified Glass Ionomer Cements to Er:YAG Laser-treated Tooth Structure." Operative Dentistry 31, no. 2 (2006): 212–18. http://dx.doi.org/10.2341/05-13.

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Clinical Relevance Er:YAG laser adversely affected the adhesion of resin-modified glass ionomer cements to tooth structure and cannot be considered an alternative technique to the conventional turbine handpiece.

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17

Song, Xiao-Fei, and Ling Yin. "Surface morphology and fracture in handpiece adjusting of a leucite-reinforced glass ceramic with coarse diamond burs." Materials Science and Engineering: A 534 (February 2012): 193–202. http://dx.doi.org/10.1016/j.msea.2011.11.058.

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18

Dyson, J. E., and B. W. Darvell. "A laboratory evaluation of two brands of disposable air turbine handpiece." British Dental Journal 182, no. 1 (1997): 15–21. http://dx.doi.org/10.1038/sj.bdj.4809287.

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19

Huang, Yi-Cheng, and Yu-Hsien Chen. "Use of Long Short-Term Memory for Remaining Useful Life and Degradation Assessment Prediction of Dental Air Turbine Handpiece in Milling Process." Sensors 21, no. 15 (2021): 4978. http://dx.doi.org/10.3390/s21154978.

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The complexity of the internal components of dental air turbine handpieces has been increasing over time. To make operations reliable and ensure patients’ safety, this study established long short-term memory (LSTM) prediction models with the functions of learning, storing, and transmitting memory for monitoring the health and degradation of dental air turbine handpieces. A handpiece was used to cut a glass porcelain block back and forth. An accelerometer was used to obtain vibration signals during the free running of the handpiece to identify the characteristic frequency of these vibrations in the frequency domain. This information was used to establish a health index (HI) for developing prediction models. The many-to-one and many-to-many LSTM frameworks were used for machine learning to establish prediction models for the HI and degradation trajectory. The results indicate that, in terms of HI predicted for the testing dataset, the mean square error of the many-to-one LSTM framework was lower than that that of a logistic regression model, which did not have a memory framework. Nevertheless, high accuracies were achieved with both of the two aforementioned approaches. In general, the degradation trajectory prediction model could accurately predict the degradation trend of the dental handpiece; thus, this model can be a useful tool for predicting the degradation trajectory of real dental handpieces in the future.

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20

Hsien, Kuang Hung, and Shyh Chour Huang. "Optimization of Micro Wind Turbine for Dental Fiber Handpiece Based on the Taguchi Method." Advanced Materials Research 605-607 (December 2012): 401–4. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.401.

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This paper presents the use of the Taguchi method, Computational-Fluid-Dynamics and electromagnetic field analysis to optimize the design of a micro wind turbine for a dental fiber handpiece. An orthogonal array, the signal-to-noise ratio and analysis of variance were used to study the multiple-objectives in the micro wind turbine design. The results showed that: (1) the wire slot fill factor and stator angle have a significant influence on the flow rate, whereas wire slot fill factor and inlet dimensions have a significant effect on the pressure drop; (2) the micro wind turbine reduces electricity usage by 25 watts in a day and produces brightness of 20,000-23,000 lux. The proposed design of the micro wind turbine not only saves energy but also reduces the need for replacement halogen lamp.

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21

Peng, Jian Hui, Xiao Fei Song, and Ling Yin. "Forecasting of Cutting Forces in Dental Adjustment of Ceramic Prostheses Using an Artificial Neural Network." Advanced Materials Research 152-153 (October 2010): 1687–90. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1687.

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Intraoral adjustment of ceramic prostheses involving cutting process is a central procedure in restorative dentistry because the quality of ceramic prostheses depends on the cutting process. In this paper, an artificial neural network (ANN) model was developed for the first time to forecast the dynamic forces in dental cutting process as functions of clinical operational parameters. The predicted force values were compared with the measured values in in vitro dental cutting of porcelain prostheses obtained using a novel two-degrees-of-freedom computer-assisted testing apparatus with a high-speed dental handpiece and diamond burs. The results indicate that there existed nonlinear relationships between the cutting forces and clinical operational parameters. It is found that the ANN-forecasted forces were in good agreement with the experiment-measured values. This indicates that the established ANN model can provide insights into the force-related process assessment and forecast for clinical dental cutting of ceramic prostheses.

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Dyson, J. E., and B. W. Darvell. "The development of the dental high-speed air turbine handpiece. Part 1." Australian Dental Journal 38, no. 1 (1993): 49–58. http://dx.doi.org/10.1111/j.1834-7819.1993.tb05451.x.

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Dyson, J. E., and B. W. Darvell. "The development of the dental high-speed air turbine handpiece. Part 2." Australian Dental Journal 38, no. 2 (1993): 131–43. http://dx.doi.org/10.1111/j.1834-7819.1993.tb05475.x.

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Huang, Yi-Cheng, and Pin-Jun Wang. "Infrared Air Turbine Dental Handpiece Rotor Fault Diagnosis with Convolutional Neural Network." Sensors and Materials 32, no. 11 (2020): 3545. http://dx.doi.org/10.18494/sam.2020.2755.

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FUSHIMI, Hikaru, Yasuyuki NISHI, Kazuo SHIMOMURA, and Kenji HASEGAWA. "Study on Internal Flow and Performance of a Dental Air Turbine Handpiece." Proceedings of Ibaraki District Conference 2017.25 (2017): 304. http://dx.doi.org/10.1299/jsmeibaraki.2017.25.304.

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Juraeva, Makhsuda, Bong Hwan Park, Kyung Jin Ryu, and Dong Joo Song. "Designing high-speed dental air-turbine handpiece by using a computational approach." International Journal of Precision Engineering and Manufacturing 18, no. 10 (2017): 1403–7. http://dx.doi.org/10.1007/s12541-017-0167-4.

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Geng, Ke Tao, Yu Guo Wang, Xiao Fei Song, Shu Min Wan, and Bin Lin. "In Vitro Study on Dental Abrasive Finishing of Restorative Ceramics Using Diamond Burs in Dental Surgery." Applied Mechanics and Materials 217-219 (November 2012): 1663–66. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1663.

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With the aesthetics’ enhancement, there is a growing demand for the use of restorative ceramics in dental surgery. However, ceramic materials are hard and brittle, and problems such as surface damage, crack, and fatigue were easily produced in dental abrasive finishing. Consequently, these flaws could cause the strength decrease of the ceramic, which manifest the shortage of the lifespan in dental. Contraposing these problems, a high-speed handpiece with diamond burs was used when finishing the leucite glass ceramic in the dental surgery. In this paper, finishing force, specific energy and surface integrity including the roughness and morphology were observed. the results revealed that both normal and tangential forces increased with the increasing of feed rate and depth of cut, while there is an apparent decrease of the specific energy. These two parameters were bigger in the up finishing than that of down finishing. Finishing parameters have little effect on surface roughness, according to the observation of a scanning electron microscope. It is easily found that the finished surface was consisting of brittle fracture and plastic deformation. For comprehensive, good surface quality could be obtained in the down cutting other than up cutting.

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Watanabe, I., C. Ohkubo, J. P. Ford, M. Atsuta, and T. Okabe. "Cutting efficiency of air-turbine burs on cast titanium and dental casting alloys." Dental Materials 16, no. 6 (2000): 420–25. http://dx.doi.org/10.1016/s0109-5641(00)00038-5.

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Quan, Ying-Jun, Joong-Yeon Lim, Kyoung-Nam Kim, and Yang-Soo Kim. "A testing methodology for suck-back behavior of high-speed air-turbine dental handpiece." Korean Journal of Dental Materials 42, no. 1 (2015): 29. http://dx.doi.org/10.14815/kjdm.2015.42.1.29.

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Eshleman, J. Robert, and David C. Sarrett. "How the development of the high-speed turbine handpiece changed the practice of dentistry." Journal of the American Dental Association 144, no. 5 (2013): 474–77. http://dx.doi.org/10.14219/jada.archive.2013.0148.

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Eshleman, J. Robert, and David C. Sarrett. "How the development of the high-speed turbine handpiece changed the practice of dentistry." Journal of the American Dental Association 144 (October 2013): 29S—32S. http://dx.doi.org/10.14219/jada.archive.2013.0245.

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32

Holliday, R., S. Venugopal, A. Howell, and W. Keys. "Operator's ability at assessing a high-speed (air turbine) handpiece before use: an audit." British Dental Journal 218, no. 2 (2015): E3. http://dx.doi.org/10.1038/sj.bdj.2015.40.

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Geminiani, Alessandro, Daniel S. Weitz, Carlo Ercoli, Changyong Feng, Jack G. Caton, and Dimitrios E. V. Papadimitriou. "A Comparative Study of the Incidence of Schneiderian Membrane Perforations during Maxillary Sinus Augmentation with a Sonic Oscillating Handpiece versus a Conventional Turbine Handpiece." Clinical Implant Dentistry and Related Research 17, no. 2 (2013): 327–34. http://dx.doi.org/10.1111/cid.12110.

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Juraeva, Makhsuda, Dong Joo Song, and Dong Jin Kang. "Optimum Design of the Dental Air-Turbine Handpiece System Using the Design of Experiment Method." International Journal of Precision Engineering and Manufacturing 21, no. 2 (2020): 265–72. http://dx.doi.org/10.1007/s12541-019-00294-8.

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35

Busby, Mike. "Summary of: Operator's ability at assessing a high-speed (air turbine) handpiece before use: an audit." British Dental Journal 218, no. 2 (2015): 76–77. http://dx.doi.org/10.1038/sj.bdj.2015.13.

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36

Inayati, Eny, Sri Redjeki Indiani, and Nanda Rachmad Putra Gofur. "PREVENTION AND CONTROL OF CROSS INFECTION AT DENTAL LABORATORIES IN EAST JAVA PROVINCE OF INDONESIA." Journal of Vocational Health Studies 4, no. 3 (2021): 125. http://dx.doi.org/10.20473/jvhs.v4.i3.2021.125-130.

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Background: infectious disease is one major important health issue. Dental technician is an occupation which has a risk to get infectious disease transmitted from saliva, blood or contaminated tools if universal precaution utensils did not use properly. Infection can be transferred through dental impression from surface contact, handpiece, burs, pumice, aerosol etc. Purpose: This study aim to find out desinfection implementation in dental laboratories located in East Java as a preventive and controlling action towards cross infection. Method: Data were obtained through questionnaire, the questionnaires were designed to get the information related to infection control from dental laboratories in East Java. The survey was conducted in 36 dental laboratories listed by Association of Dental Technician in East Java. Result: As much as 90% dental laboratories did not performed desinfection procedure to the dental impression received from dentist and never follow any desinfection training. AS much as 95% Dental laboratories believe universal precaution utensils can be infected but only 50% utilize universal precaution utensils. Eventhough if such infection occurs, the owner will be fully responsible. Conclusion: Prevention and management towards cross infection control in dental laboratories located in East Java still very low. Development and supervision towards dental laboratories operational by Indonesian government and professional association need to be improved. Education regarding infection control need to be performed through trainings and inserted infection control matters in dental technician study programme curriculum in Indonesia.

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Takamori, Kazunori, Hirohiko Furukawa, Tadashi Katayama, and Shigeru Watanabe. "Basic study on vibrations of tooth preparations caused by air turbine, quintuple speed handpiece, and Er:YAG Laser." International Congress Series 1248 (May 2003): 227–30. http://dx.doi.org/10.1016/s0531-5131(03)00042-6.

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38

Romeo, Umberto, Alexandros Galanakis, Francesco Lerario, Gabriele Maria Daniele, Gianluca Tenore, and Gaspare Palaia. "Subcutaneous emphysema during third molar surgery: a case report." Brazilian Dental Journal 22, no. 1 (2011): 83–86. http://dx.doi.org/10.1590/s0103-64402011000100015.

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Extraction of third molars is the most common surgical procedure performed in oral surgery on a daily basis and, despite surgical skills and expertise, complications may occur. Complications observed during or after third molar removal may include pain, swelling, bleeding, infection, sinus perforation and nerve damage. Fortunately, with a proper management and a good surgical technique, the incidence of such events is low. Subcutaneous emphysema associated with dental extraction occurs when the air from the high-speed dental handpiece is forced into the soft tissue through the reflected flap and invades the adjacent tissues, leading to swelling, crepitus on palpation and occasionally spreading through the tissue spaces of the fascial planes. Although rare, iatrogenic subcutaneous emphysema can have serious and potentially life-threatening consequences. Care should be taken when using air-driven handpieces. The access of air into the facial tissues is not limited to tooth extractions, but may also occur through other portals of entrance, such as endodontically treated teeth, periodontium and lacerations of intraoral soft tissues. When subcutaneous emphysema occurs, it must be quickly diagnosed and properly managed to reduce the risk of further complications. This report presents a case of subcutaneous emphysema occurred during extraction of a mandibular third molar extraction with the use of an air turbine handpiece. Case management is described and issues relative to the diagnosis and prevention of this surgical complication are discussed.

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AOYAGI, Naoko, Toshihiro KIKUTA, Masaaki AJISAKA, Naoki IKEYAMA, George UMEMOTO, and Tomoki SHIMAMURA. "Air route of mediastinal emphysema during extraction of an impacted lower third molar using an air-turbine handpiece." Japanese Journal of Oral & Maxillofacial Surgery 54, no. 3 (2008): 140–44. http://dx.doi.org/10.5794/jjoms.54.140.

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40

Yi-Cheng, Huang, Liu Chang-Chih, and Chuo Po-Chou. "Prognostic diagnosis of the health status of an air-turbine dental handpiece rotor by using sound and vibration signals." Journal of Vibroengineering 18, no. 3 (2016): 1514–24. http://dx.doi.org/10.21595/jve.2016.16735.

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41

Burke, FJ Trevor, Louis Mackenzie, and Peter Sands. "Suggestions for Non-Aerosol or Reduced-Aerosol Restorative Dentistry (for as Long as is Necessary)." Dental Update 47, no. 6 (2020): 485–93. http://dx.doi.org/10.12968/denu.2020.47.6.485.

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The advent of coronavirus and the associated disease COVID-19 has led to the closure of dental practices in the UK and, indeed, in many parts of the world. In order to get dental practices operating again, it is suggested that it is necessary to adopt a new way of working. Principal among concerns has been the potential carriage of droplets (from an infected patient) into the aerosols resulting from the use of the turbine handpiece and from ultrasonic and sonic scalers, and other instruments used in restorative dentistry (current terminology being Aerosol Generating Procedures [AGPs]). It is therefore the aim of this paper to review restorative techniques and suggest those which are appropriate to aerosol-free, or reduced-aerosol restorative dentistry. CPD/Clinical Relevance: With anxieties regarding aerosol generating procedures abounding, it may be helpful to review procedures which either reduce or avoid these AGPs.

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42

Kina, J. F., P. C. Benitez, R. F. Z. Lizarelli, et al. "Comparative histopathological analysis of human pulps after class I cavity preparation with a high-speed air-turbine handpiece or Er:YAG laser." Laser Physics 18, no. 12 (2008): 1562–69. http://dx.doi.org/10.1134/s1054660x08120293.

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43

Petti, Stefano, Catia Moroni, Giuseppe Alessio Messano, and Antonella Polimeni. "Detection of oral streptococci in dental unit water lines after therapy with air turbine handpiece: biological fluid retraction more frequent than expected." Future Microbiology 8, no. 3 (2013): 413–21. http://dx.doi.org/10.2217/fmb.12.151.

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44

Fonseca, Tabajara Sabbag, Edson Alfredo, Luiz Pascoal Vansan, et al. "Retention of radicular posts varying the application technique of the adhesive system and luting agent." Brazilian Oral Research 20, no. 4 (2006): 347–52. http://dx.doi.org/10.1590/s1806-83242006000400012.

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This study evaluated in vitro the retention of intracanal cast posts cemented with dual-cure resin varying the application method of the primer/adhesive solution and luting agent in the prosthetic space prepared to receive the posts. Sixty endodontically treated maxillary canines had their crowns discarded, and their roots were embedded in acrylic resin. The prosthetic spaces were prepared with Largo burs mounted on a low-speed handpiece coupled to a parallelometer in order to maintain length and diameter of intraradicular posts constant and to guarantee that the preparations were parallel after casting. Two groups (n = 30) were randomly formed according to the device used to apply the adhesive system: microbrush or standard bristle brush (control). Each group was divided into 3 subgroups (n = 10) according to the technique used to place the luting agent into the root canal: using only a lentulo spiral before setting the post, applying it onto the post surface, or combining both methods. After 72 hours, the tensile force required to dislodge each post was determined by a universal testing machine (Instron 4444) set at a speed of 1 mm/min. The results indicated that the use of the microbrush yielded higher bond strength values (0.1740 ± 0.04 kN) than those recorded for the bristle brush tip (0.1369 ± 0.04 kN, p < 0.001). Bonferroni's test demonstrated a higher retention (p < 0.001) in radicular post cemented with the technique that combined both methods (lentulo + post: 0.1787 ± 0.03 kN) than that obtained with lentulo (0.1461 ± 0.065 kN) or post (0.1416 ± 0.03 kN) alone. The interactions between the adhesive system and luting agent application techniques presented statistical difference (p < 0.001). It was concluded that the best performance in terms of tensile strength among the tested conditions was obtained when the adhesive system was applied with a microbrush and the luting agent was taken into the root canal with lentulo spirals alone (0.1961 ± 0.04 kN) and combining both methods (lentulo + post: 0.1911 ± 0.02 kN).

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Ercoli, Carlo, Mario Rotella, Paul D. Funkenbusch, Scott Russell, and Changyong Feng. "In vitro comparison of the cutting efficiency and temperature production of ten different rotary cutting instruments. Part II: Electric handpiece and comparison with turbine." Journal of Prosthetic Dentistry 101, no. 5 (2009): 319–31. http://dx.doi.org/10.1016/s0022-3913(09)60064-0.

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46

Aleisa, Khalil, Abdullah Alkeraidis, Ziad Nawaf Al-Dwairi, Hamdi Altahawi, and Edward Lynch. "Implant Fixture Heat Transfer During Abutment Preparation." Journal of Oral Implantology 41, no. 3 (2015): 264–67. http://dx.doi.org/10.1563/aaid-joi-d-13-00056.

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The purpose of the study was to evaluate the effect of water flow rate on the heat transmission in implants during abutment preparation using a diamond bur in a high-speed dental turbine. Titanium-alloy abutments (n = 32) were connected to a titanium-alloy implant embedded in an acrylic resin within a water bath at a controlled temperature of 37°C. The specimens were equally distributed into 2 groups (16 each) according to the water flow rate used during the preparation phase. Group 1 had a water flow rate of 24 mL/min, and group 2 had a water flow rate of 40 mL/min. Each abutment was prepared in the axial plane for 1 minute and in the occlusal plane for 1 minute with a coarse tapered diamond bur using a high-speed dental handpiece. Thermocouples embedded at the cervix of the implant surface were used to record the temperature of heat transmission from the abutment preparation. Heat generation was measured at 3 distinct times (immediately and 30 seconds and 60 seconds after the end of preparation). Statistical analyses were carried out using 2-way analysis of variance and the Student t test. Water flow rates (24 mL vs 40 mL) and time interval had no statistically significant effect on the implant's temperature change during the abutment preparation stage (P = .431 and P = .064, respectively). Increasing the water flow rate from 24 to 40 mL/min had no influence on the temperature of the implant fixture recorded during preparation of the abutment.

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Song, Xiao-Fei, Jian-Hui Peng, Ling Yin, and Bin Lin. "A Machining Science Approach to Dental Cutting of Glass Ceramics Using an Electric Handpiece and Diamond Burs." Journal of Manufacturing Science and Engineering 135, no. 1 (2013). http://dx.doi.org/10.1115/1.4023273.

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Dental cutting using handpieces has been the art of dentists in restorative dentistry. This paper reports on the scientific approach of dental cutting of two dental ceramics using a high-speed electric handpiece and coarse diamond burs in simulated clinical conditions. Cutting characteristics (forces, force ratios, specific removal energy, surface roughness, and morphology) of feldspar and leucite glass ceramics were investigated as functions of the specific material removal rate, Qw and the maximum undeformed chip thickness, hmax. The results show that up and down cutting remarkably affected cutting forces, force ratios, and specific cutting energy but did not affect surface roughness and morphology. Down cutting resulted in much lower tangential and normal forces, and specific cutting energy, but higher force ratios. The cutting forces increased with the Qw and hmax while the specific cutting energy decreased with the Qw and hmax. The force ratios and surface roughness showed no correlations with the Qw and hmax. Surface morphology indicates that the machined surfaces contained plastically flowed and brittle fracture regions at any Qw and hmax. Better surface quality was achieved at the lower Qw and the smaller hmax. These results provide fundamental data and a scientific understanding of ceramic cutting using electric dental handpieces in dental practice.

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Hsu, Chih-Neng, Hsiao-Wei D. Chiang, and Ya-Yi Chang. "Numerical Simulation and Experimental Study of a Dental Handpiece Air Turbine." International Journal of Turbo and Jet Engines 28, no. 2 (2011). http://dx.doi.org/10.1515/tjj.2011.016.

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49

Stringer, Laurel, Sarah Malley, Darrell M. Hutto, Jason A. Griggs, and Susana M. Salazar Marocho. "Maximum Temperature Through a Yttrium Stabilized Zirconia Ceramic After Er,Cr:YSGG Laser Irradiation." Current Dentistry 02 (August 6, 2020). http://dx.doi.org/10.2174/2542579x02999200806160149.

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Background: The most common approach to remove yttria stabilized zirconia (YSZ) fixed-dental prostheses (FDPs) is by means of diamond burs attached to a high-speed handpiece. This process is time-consuming and destructive. The use of lasers over mechanical instrumentation for removal of FDPs can lead to efficient and predictable restoration retrievability. However, the heat produced might damage the tooth pulp (>42˚C). Objective: The purpose of this study was to determine the maximum temperature (T) reached during the use of different settings of the erbium, chromium:yttrium-scandium-gallium-garnet Er,Cr:YSGG laser through a YSZ ceramic. Methods: YSZ slices (1 mm thick) were assigned into 7 groups. For the control group, a diamond bur was used to cut a 1 mm groove into the YSZ slices. For the 6 experimental groups, the laser was operated at a constant combination of 33% water and 66% air during 30 s with two different power settings (W) at three frequencies (PPS), as follows (W/PPS): 2.5/20, 2.5/30, 2.5/45, 4.5/20, 4.5/30, 4.5/45. The T through the YSZ slice was recorded in degrees Celsius by using a digital thermometer with a K thermocouple. Results: The median T of the control group was 26.5˚C. The use of 4.5 W resulted in the median T (˚C) of 44.2 at 20 PPS, 53.3 at 30 PPS, and 58.9 at 45 PPS, while 2.5 W showed 34.6, 31.6, and 25.0 at 20, 30, and 45 PPS, respectively. KruskalWallis one-way ANOVA showed that within each power setting, the T was similar. The high power and lowest frequency (4.5/20) showed no significant difference from the 2.5 W settings and the control group. Conclusion: The lower power setting (2.5 W) is a potential method for the use of the Er,Cr:YSGG laser to debond YSZ structures. The higher power (4.5 W) with high frequencies (30 and 45 PPS) is unsuitable.

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Anton y Otero, Clara Isabel, Enrico Di Bella, Ivo Krejci та Tissiana Bortolotto. "Effect of 9.3 μm CO2 and 2.94 μm Er:YAG Laser vs. Bur Preparations on Marginal Adaptation in Enamel and Dentin of Mixed Class V Cavities Restored With Different Restorative Systems". Frontiers in Dental Medicine 2 (17 травня 2021). http://dx.doi.org/10.3389/fdmed.2021.668056.

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This study aimed to compare marginal adaptation in enamel and dentin before and after aging of laser vs. bur-prepared mixed class V cavities restored by different restorative systems. Seventy two caries-free human molars were distributed to nine experimental groups; cavities were prepared using two different lasers: a handpiece -integrated 2.94 μm Er:YAG laser at 4.5 W, 300 mJ, and 0.75 W, 50 mJ with 15 Hz (LiteTouch, Light Instruments, Israel) and a novel CO2 laser at 12.95 W, 19.3 mJ, and 4.1 W, 6.11 mJ with 671 Hz (Solea 9.3 μm, Convergent Dental, USA). Cavities prepared with conventional diamond burs (Intensiv, Switzerland) in a red contra angle at high speed under maximal water cooling served as control. Cavities were prepared under simulation of dentinal fluid and restored using three different self-etching universal adhesives in combination with three nanohybrid composites, applied in two layers: Scotchbond Universal with Filtek Supreme XTE (3M, USA), G-Premio BOND with Essentia Universal (GC, Japan), and OptiBond Universal with Harmonize Universal (Kerr, USA). After restorations' polishing and simultaneous thermal (5–50°C, 2 min each) and mechanical loading (max. 49 N; 200,000 cycles), replicas of restoration margins were examined under SEM at × 200 magnification. Percentages of continuous margins (CMs) were quantified before and after the fatigue test and statistically compared (two-way ANOVA with Fisher's least significant difference [LSD] post hoc test). Significant differences were found in almost all groups between the results before and after the fatigue test, as well as between the different preparation tools and restorative materials (p &lt; 0.05). Traditional bur preparations are confirmed as gold standard in enamel and dentin, as all three tested restorative systems provide results of marginal adaptation of more than 80% CM after loading. Er:YAG laser preparations can be equally effective in combination with SBU/Filtek Supreme XTE. CO2 laser ablation could not provide convincing results with the tested self-etching restorative systems. Marginal adaptation has been highly dependent on the substrate and showed impaired adhesion, especially in enamel. Scotchbond Universal/Filtek Supreme XTE showed the highest and most stable values of CM. The other two restorative systems were highly dependent on the preparation device of the substrate.

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