압전방식 초음파 치석제거기의 작업조건에 따른 치과주조용 합금의 삭제에 관한 연구
The effect of working parameters on removal of casting gold alloy using a piezoelectric ultrasonic scaler with scaler tip in vitro
차국봉, 김영성, 김원경, 이영규,
소속 상세정보
차국봉 ( Cha Kuk-Bong ) - 울산대학교 의과대학 치과학교실
김영성 ( Kim Young-Sun ) - 서울아산병원 치주과
김원경 ( Kim Won-Kyung ) - 서울아산병원 치주과
이영규 ( Lee Young-Kyoo ) - 서울아산병원 치주과
KMID : 0363020090390020139
Abstract
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, Jelenko Inc, CA, USA) was used as substitute for tooth substance. Piezoeletric ultrasonic scaler and No.1 scaler tip (P-Max, 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.
키워드
piezoeletric ultrasonic scaler;working parameters;casting gold alloy removal
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