• Title/Summary/Keyword: Dental Scaler Tip

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Development of Powder Injection Mold for Dental Scaler Tip Using Stainless Series Powder (스테인레스계열(17-4PH, 316L, 440C) 분말을 이용한 Dental Scaler Tip 분말사출금형 개발)

  • Ko, Y.B.;Kim, J.S.;Hwang, C.J.
    • Transactions of Materials Processing
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    • v.16 no.1 s.91
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    • pp.61-66
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    • 2007
  • Powder injection molding(PIM) is widely used for many parts in the field of automotives, electronics and medical industries, due to the capability of net shaping for complex 3-D geometry. Powder injection mold design for the dental scaler tip, a component of medical appliance, was presented. In comparison with conventional machining process, powder injection molding has many advantages, specially in price and dimensional stability, for molding dental scaler tip which has complex geometry. Both product design and mold design for dental scaler tip were presented. A PIM feedstock was made of stainless series(17-4PH, 316L, 440C) powder and a wax based binder. The 'rapid mold' concept was applied to manufacture the various forms and materials of dental scaler tip including vibration characteristics.

Powder Injection Mold Design for Dental Scaler (Dental Scaler 분말사출용 금형설계)

  • Park H. P.;Ko Y. B.;Chung S. T.;Rhee B. O.;Hwang C. J.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2005.05a
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    • pp.270-274
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    • 2005
  • The capability of net shaping for complex 3-D geometry, powder injection molding(PIM) is widely used for parts in the field of automotives, electronics and medical industry. Powder injection mold design for dental scaler tip, a component of medical appliance, was presented. In comparison with conventional machining process, powder injection molding has many advantages, specially in price and dimensional stability, for molding dental scaler tip. Product design and mold design for dental scaler tip was presented. Short shot experiment with scaler tip PIM mold and several defect (flash etc.) during injection molding process was discussed.

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A Study for Vibrational Characteristics Improvement of Dental Scaler Tip using Powder Injection Molding (분말사출성형을 이용한 치과용 스케일러 팁의 진동특성 개선에 관한 연구)

  • Hwang C.J.;Kim J.S.;Ko Y.B.;Chung S.T.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2006.05a
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    • pp.343-344
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    • 2006
  • Powder injection molding(PIM) is widely used for many parts in the field of automotives, electronics and medical industries, due to the capability of net shaping for complex 3-D geometry. Powder injection mold design fur the dental scaler tip, a component of medical appliance, was presented. In comparison with conventional machining process, powder injection molding has many advantages, specially in price and dimensional stability, for molding dental scaler tip which has complex geometry. Both product design and mold design for dental scaler tip were presented. The 'rapid mold' concept was applied to manufacture the various forms of dental scaler tip.

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CAE Analysis of Powder Injection Molding Process for Dental Scaler Mold (치과용 스케일러 금형의 분말사출성형 CAE 해석설계)

  • Ko Y. B.;Park H. P.;Chung S. T.;Rhee B. O.;Hwang C. J.
    • Transactions of Materials Processing
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    • v.14 no.6 s.78
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    • pp.570-576
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    • 2005
  • Powder Injection Molding(PIM) has recently been recognized as an advanced manufacturing technology for low-cost mass production of metal or ceramic parts of complicated geometry With this regards, design technology of dental scaler tip PIM mold, which has complex shape and small core pin (diameter=0.6mm), with the help of computer-aided analysis of powder injection molding process was developed. Computer-aided analysis for dental scaler tip mold was implemented by finite element method with non-Newtonian fluid, modified Cross model viscosity, PvT data of powder/binder mixture. Compter-aided analysis results, such as filling pattern, weldline formation, air vent position prediction were compared with experimental result, and eventually have been shown good agreement. The core pin (diameter=0.6mm) deflection analysis of dental scaler tip PIM mold during PIM filling process was also investigated before mold fabrication.

Development of Dental Scaler Tip Mold and it's Molding Technology using Powder Injection Molding (분말사출성형을 이용한 치과용 스케일러 팁 금형 및 성형기술개발)

  • Ko Y.B.;Kim J.S.;Chung S.T.;Hwang C.J.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2006.05a
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    • pp.83-84
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    • 2006
  • Due to the capability of net shaping for complex 3D geometry, powder injection molding (PIM) is widely used for automotive parts, electronics and medical industry. In this study, an ultrasonic dental scaler tip produced by machining process was redesigned for the PIM process. An injection mold was designed and manufactured to produce the dental scaler tip by the PIM process.

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Development of Dental Scaler Tip Mold with Powder Injection Molding Process

  • Hwang, C.J.;Ko, Y.B.;Park, H.P.;Chung, S.T.;Rhee, B.O.
    • Proceedings of the Korean Powder Metallurgy Institute Conference
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    • 2006.09a
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    • pp.499-500
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    • 2006
  • With the capability of net shaping for complex 3D geometry, powder injection molding (PIM) is widely used for automotive parts, electronics and medical industry. In this study, an ultrasonic dental scaler tip produced by machining process was redesigned for the PIM process. An injection mold was designed and machined to produce the dental scaler tip by the PIM process.

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Morphological aspect of the attached bacteria by the sterilization method of the ultrasonic scaling tip (소독멸균 방법에 따른 초음파 스케일링 팁에 부착된 세균의 양상)

  • Nam, Seoul-Hee;Kim, Yu-rin
    • Journal of Korean society of Dental Hygiene
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    • v.15 no.4
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    • pp.713-718
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    • 2015
  • Objectives: The purpose of the study was to investigate the bacterial morphology attached on ultrasonic scaler tips using no cleansing solution, alcohol cotton, liquid chemical disinfecting agent, and autoclave method. Methods: Scaling tip was applied to the mouth and the ultrasonic scaler tips were assigned to four groups. Group 1 was control group with no cleansing solution. Group 2 was treated with alcohol cotton. Group 3 was treated with 2% green Y-Na solution in liquid chemical disinfecting agent, and Group 4 was sterilized by autoclave method. Live bacteria were observed by phase contrast microscopy. The scanning electron microscopy(SEM) revealed the morphological characteristics of scaler surface. The type of attached bacteria were analyzed using SPSS 21.0 program. The data were analyzed by one-way analysis of variance(ANOVA) and Tukey's post-hoc test. Results: The types of sterilization methods had influences on the bacterial viability. The numbers of cocci, bacilli, spiral form bacteria, and filamentous bacteria was observed in $89.00{\pm}3.60%$, $29.67{\pm}3.51%$, $3.33{\pm}0.57%$ and $1.67{\pm}0.57%$ in control group, $31.67{\pm}3.51%$, $63.33{\pm}4.04%$, $2.00{\pm}1.00%$ and $1.67{\pm}0.57%$ in alcohol cotton group, $69.67{\pm}4.50%$, $12.33{\pm}2.51%$, 0% and 0% in liquid chemical disinfecting agent group, and 0.0%, 0.0%, 0.0% and 0.0% in autoclave method group. The clean surface of ultrasonic scaler tip was shown on SEM by autoclave method. Conclusions: The most effective sterilization method of ultrasonic scaler tip was the autoclave method. Autoclave method is the most effective sterilization method and can reduce the cross-infection in the dental clinic.

Design and Evaluation of Piezoelectric Ultrasonic Scaler Produced by a Simulation (시뮬레이션을 통한 압전형 초음파 스케일러 개발 및 평가)

  • Kim, Chul-Min;Lee, Young-Jin;Paik, Jong-Hoo;Jeong, Young-Hun;Kang, Kook-Jin;Lee, Jeong-Bae;Lee, Seung-Dae
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.22 no.10
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    • pp.832-836
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    • 2009
  • A piezoelectric ultrasonic scaler, usually used to remove the tartar out of teeth and to amputate the pubis, is a recently popular instrument for dental treatment due to its several merits such as small size, low-electric power, precision and low-cost. It has typically two parts of a tip and vibration system, which is also composed of head, piezoelectric elements and tail-mass. The scaler concentrates its displacement on tip and has commonly a resonance frequency at 25~30 kHz, and in order to improve the performance of the scaler, it is important to standardize the size of the vibration system without tip for high performance because scaler in quality differs according to several tips. In this study, a Finite Element Analysis (FEA) was utilized to optimize the structure of ultrasonic scaler in the vibration system. Consequently, this study revealed that influence of several tips on property were minimized and scaler showed good property at the resonance frequency of 28 kHz.

The effect of working parameters on removal of casting gold alloy using a piezoelectric ultrasonic scaler with scaler tip in vitro (압전방식 초음파 치석제거기의 작업조건에 따른 치과주조용 합금의 삭제에 관한 연구)

  • Cha, Kuk-Bong;Kim, Won-Kyung;Lee, Young-Kyoo;Kim, Young-Sung
    • Journal of Periodontal and Implant Science
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    • v.39 no.2
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    • pp.139-148
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    • 2009
  • Purpose: Ultrasonic scalers have been widely used for removing biofilm which is considered as major etiologic factor of periodontal disease. The purpose of this study was to evaluate the effect of working parameters of piezoeletric ultrasonic scaler with scaler tip (No. 1 tip) on casting gold alloy removal. Methods: Type III dental casting gold alloy (Firmilay$^{circledR}$, Jelenko Inc, CA, USA) was used as substitute for tooth substance. Piezoeletric ultrasonic scaler and No.1 scaler tip (P-Max$^{circledR}$, Satelec, France) were selected. The selected working parameters were mode (P mode, S mode), power setting (2, 4, 8) and lateral force (0.5 N, 1.0 N, 2.0 N). The effect of working parameters was evaluated in terms of ablation depth, ablation width and ablation area. Results: Mode influenced ablation depth and ablation area. Power also influenced ablation depth and ablation area. Especially, Power 2 and power 8 showed statistically significant difference. Lateral force had influence on ablation width, and 0.5 N resulted significant increase compared with 1.0 N and 2.0 N. Ablation depth was influenced by mode, power and lateral force and defect width was influenced by lateral force. Ablation area was influenced by mode and power. Conclusions: It can be concluded that the use of piezoelectric ultrasonic scaler with No. 1 scaler tip in S mode and high power may result in significant loss of tooth substance.

Computer Aided Engineering Design of Power Injection Molding Process for Dental Scaler Top Mold Design

  • Hwang, C.J.;Ko, Y.B.;Park, H.P.;Chung, S.T.;Rhee, B.O.
    • Proceedings of the Korean Powder Metallurgy Institute Conference
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    • 2006.09a
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    • pp.497-498
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    • 2006
  • Powder Injection Molding (PIM) has recently been recognized as an advanced manufacturing technology for low-cost mass production of metal or ceramic parts of complicated geometry. With this regards, design technology of dental scaler tip PIM mold, which has complex shape, with the help of computer-aided analysis for powder injection molding process was developed. Compter aided analysis results, such as filling pattern, weldline formation, and air vent position prediction were investigated and eventually showed good agreements with experimental results.

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