• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2009.06a
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• pp.20-20
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• 2009

치아의 치석제거 및 치골절삭에 사용되는 초음파 스케일러는 일반적으로 마그넷형과 압전형으로 구분할 수 있으며, 최근에 들어 소형화, 저전력, 정밀성, 저비용 등의 장점으로 인해 압전형이 주로 사용되고 있다. 국내의 대부분의 치과에서 한 대 이상 운용되는 초음파 스케일러는 대부분 유럽 제품으로며, 국내에서는 이를 대체하기 위한 제품이 출시되고 있으나 아직까지 유럽 제품에 비해 출력강도, 정밀도 등에서 성능이 모자란 현실로 시장에서 외면 받고 있다. 본 연구에서는 앞서 언급한 압전 초음파 스케일러에 대한 체계적인 연구를 진행하여 외국에 비해 상대적으로 성능이 떨어지는 초음파 스케일러의 성능을 개선하고자 하였다. 이를 위하여 스케일러의 진동 발생부, 즉 압전 세라믹과 SUS 재질의 head, tail 부로 구성된 진동발생부의 최적구조톨 도출하기 위하여 유한요소 해석을 실시하였으며, 스케일러의 중심주파수 28kHz에서 최대 출력이 발생할 수 있는 구조를 도출하였다. 스케일러의 Head 와 Tail 부문의 두께와 직경, 길이 변화에 따른 중심주파수 및 출력 변위의 경향분석을 실시하였으며, 이상의 결과를 바탕으로 실제 스케일러를 제작하여 시뮬레이션의 유효성을 검증하였다. 이상의 과정으로 거쳐 개발된 압전 초음파 스케일러는 다양한 Tip 종류의 영향을 최소화할 수 있으며, 중심주파수는 28~30kHz 에서 뛰어난 성능을 나타내어 기종 유럽제품의 성능을 앞지르는 특성을 확보할 수 있었다.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.41 no.1
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• pp.13-19
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• 2017

The use of ultrasonic surgery units and scalers are steadily increasing in the field of dentistry. Such units and scalers should be evaluated before they are commercialized because the mechanical performance and stability of equipment is crucial for patients. Hence, we created a hand-piece moving system that can test bone cutting and teeth scaling. The purpose of this study was to evaluate the teeth scaling performance of ultrasonic scaler unit. Additionally, we measured the temperature distribution and noise during the test. through an experimental test, we found that a high output of an Ultrasonic NX device can cause serious damage to the teeth surface, and it was not within range in heat generation distribution and noise test.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06b
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• pp.290-293
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• 2011

치아 스케일링은 치아에 단단하게 결착된 치석을 제거하는 치과 시술로서 치아 우식 및 잇몸염증을 예방하는 중요한 시술이다. 특히 요즘에는 치료시간의 단축을 통한 효율성 증대의 목적으로 전기적 에너지를 미세한 진동에너지로 바꾸는 원리를 활용한 초음파 스케일링 기법이 많이 행해지고 있다. 하지만 치아 및 치석 확보에 따른 어려움으로 인해 스케일링 시술을 충분히 훈련하기란 쉽지 않다. 본 논문에서는 사용자가 가상현실을 통해 시각 및 촉각 피드백을 받으며 초음파 스케일링 시술을 훈련할 수 있는 치아 스케일링 시뮬레이션을 위한 알고리즘을 제안한다. 치아, 치석 및 잇몸의 볼륨모델과 스케이러 팁을 구성하는 각 부문의 관통깊이를 이용한 햅틱 랜더링 기법을 적용하여 스케일러의 모양에 따른 햅틱 피드백을 생성하였다. 그리고 치아의 손상을 줄이기 위해 스케일러의 팁 부문이 치아 표면에 되도록 평형을 이루어야 한다는 점에 입각하여, 치석을 구성하는 복셀들의 치아 디스턴스필드 값 비교를 통해 치석과 치아 사이의 접착면을 추출하고 스케일러의 팁 부분과 충돌하는 추출된 집착면의 각도를 고려한 스케일링 알고리즘을 구현하였다. 또한 수동 스케일링과는 달리 초음파 스케일링은 초음파의 진동에너지에 의해 점진적으로 치아와 치석 사이의 결속력이 감소된다는 점에 착안하여 치아와 치석의 접착면을 구성하는 지점 사이의 거리에 따른 결속력 감쇠 모델을 고안하였다.

• 대한치주과학회:학술대회논문집
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• 2008.05a
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• pp.21-21
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• 2008

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.19 no.2
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• pp.1-8
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• 2020

While dental clinics still use the ultrasonic scaling/surgery tool for teeth scaling and cleaning the tool's use is expanding steadily to include treatment of damaged teeth and bone tissue. In this study, a handpiece moving system (HMS) was developed to evaluate bone scaling and cutting in the field of dentistry. The HMS, through a scaling test of bone using a scaler tip, it was able to identify surface damage. Additionally, a thermos-graphic camera was used to observe the temperature distribution that occurred during the bone scaling and cutting process. Consequently, we found that increasing the working load increased the amount of surface damage. Changes in temperature distribution occurred slowly and were maintained within safety bounds for 10 minutes. Going forward, we will compare the HMS performance on scaling and cutting with other devices.

• Journal of dental hygiene science
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• v.15 no.5
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• pp.603-611
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• 2015

This research is aimed at cutting off hearing loss and other harmful factors due to noise and providing basic material for noise reduction plan. As the research method, this research assessed noise by measuring acoustic pressure level and frequency in various situation of non-treatment and treatment. As the measurement result, average noise degree of high speed handpiece of non-treatment, ultrasonic waves scaler, and low speed handpiece showed 58~66 dB(A). Average noise degree of scaling of treatment, tooth elimination, and denture adjust showed 73~81 dB(A). The result is inferior to recognized standards of noise induced hearing loss. But the result of assessing this with (noise rating) NR curve was NR-73~78, which exceeded general workplace noise standard. This level can cause hearing loss when exposed to a long time. Therefore, treatment office noise during dental treatment can cause psychological and physical damage in dental clinic employees, and it is urgently required to establish systematic and active noise reduction plan.

• The Journal of Korean Academy of Prosthodontics
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• v.52 no.3
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• pp.177-185
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• 2014

Purpose: This study is designed to investigate the various impacts of different types of scaler tips such as cooper alloy base tip and the others on the surface roughness of teeth and implant by the method which is currently in clinical use. Materials and methods: Four different types of disc shaped porcelain, titanium, zirconia, and Type III gold alloy dental materials sized 15 mm diameter, 1.5 mm thickness were used for the experiment. Plastic hand curette (Group PS), cooper alloy new tip (Group IS), and stainless steel tip (Group SS) were used as testing appliances. A total of 64 specimens were used for this study; Four specimens for each material and appliance group. Surface roughness was formed with 15 degree angle in ultrasonic scaler tip and with 45 degree angle in hand curette of instrument tip and the specimen surface with 5 mm long, one horizontal-reciprocating motion per second for 30 seconds by 40 g force. To survey the surface roughness of each specimen, a field emission scanning electron microscope, an atomic force microscope, and a surface profiler were used. (Ra, ${\mu}m$). Results: According to SEM, most increased surface roughness was observed in SS group while IS groups had minimal roughness change. Measurement by atomic force microscope presented that the surface roughness of SS group was significantly greater than those of PS, IS and control groups in the type III gold alloy group (P<.05). IS group showed lesser surface roughness changes compared to SS group in porcelain and gold alloy group (P<.05). According to surface profiler, surface roughness of SS group showed greater than those of PS, IS and control groups and IS group showed lesser than those of SS group in all specimen groups. Type III gold alloy group had large changes on surface roughness than those of porcelain, titanium, zirconia (P<.05). Conclusion: The result of this study showed that newly developed copper alloy scaler tip can cause minimal roughness impacts on the surface of implant and dental materials; therefore this may be a useful alternative for prophylaxis of implant and restored teeth.

• Journal of Korean society of Dental Hygiene
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• v.16 no.4
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• pp.635-641
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• 2016

Objectives: The purpose of this study is to assess the characteristics of tooth surface after using Gracy curet and Ultrasonic scaler Methods: In this study, 12 teeth extracted were used. 12 specimens were divided into three groups with the same numbers, which were classified into Control group, Gracy curet use group, and Ultrasonic scaler use group, and after performing instrument operation, we measured the roughness and the loss degree of tooth surface by using SEM. Results: In groups using Gracy curet and Ultrasonic scaler, the roughness and the loss of tooth surface increased significantly(p<0.05). In the roughness of groups using Gracy curet and Ultrasonic scaler, Ultrasonic scaler group was higher in crown, but Gracy curet group was higher in root. As a result of observation through SEM, the roughness and the loss degree increased in order of Control group, Ultrasonic scaler use group, and Gracy curet use group. Conclusions: Taken together above results, both hand instrument and ultrasound equipment create roughness and loss in crown and in root, and hand instruments makes rougher than ultrasonic instruments in root, so it is thought to require thorough and accurate technical application not to damage tooth surface when removing plaque.

• 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.