압전방식초음파치석제거기의작업조건에따른치과주조용합금의삭제결손부 양상에 관한 고찰 (A morphologic evaluation of defects created by a piezoelectric ultrasonic scaler on casting gold alloy)

서지정보

· 발행기관 : 대한치주과학회
· 수록지 정보 : Journal of Periodontal & Implant Science / 39권 / 4호 / 385 ~ 390페이지
· 저자명 : 김영성, 김수환, 김원경, 이영규

초록

Purpose: In this study we evaluated the morphologic aspects of defects created by a piezoelectric ultrasonic scaler with
scaler tip on casting gold alloy using scanning electron microscope (SEM) images and defect surface profiles.
Methods: 54 blocks of type III casting gold alloy (Firmilay, Jellenko Inc, CA, USA) were scaled by a piezoelectric ultrasonic
scaler (P-MAX, Satelec, France) with scaler tip (No. 1 tip) on a sledge device. 2-dimensional profiles of defects on
all samples were investigated by a surface profilometer (a-Step 500, KLA-Tencor, CA, USA). The selected working parameters
were lateral force (0.5 N, 1.0 N, 2.0 N), mode (P mode, S mode), and power setting (2, 4, 8). SEM images were
obtained. Defect surface profiles were made on Microsoft Excel program using data obtained by a surface profilometer.
Results: Among P mode samples, there were similarities on defect surface profiles and SEM images regardless of lateral
force. The defects created in P mode were narrow and shallow although the depth and the width increased as power setting
changed low (2) to high (8). In P mode samples, the defect depth was the greatest when lateral force of 0.5 N was
applied. However all the depths were smaller than 1 m. SEM images of Lateral force of 0.5 N, S mode, power setting 2
and 4 were similar to that of P mode, but the other SEM images of S mode showed discernible changes. Defect depth of
S mode samples was the greatest when lateral force of 1.0 N was applied.
Conclusions: Within the limitations of this study, it can be concoluded that removing capability of piezoelectric scaler with
scaler tip becomes maximized as power level becomes higher but the capability is restricted when excessive lateral force is
applied on scaler tip. (J Korean Acad Periodontol 2009;39:385-390)

영어초록

Purpose: In this study we evaluated the morphologic aspects of defects created by a piezoelectric ultrasonic scaler with
scaler tip on casting gold alloy using scanning electron microscope (SEM) images and defect surface profiles.
Methods: 54 blocks of type III casting gold alloy (Firmilay, Jellenko Inc, CA, USA) were scaled by a piezoelectric ultrasonic
scaler (P-MAX, Satelec, France) with scaler tip (No. 1 tip) on a sledge device. 2-dimensional profiles of defects on
all samples were investigated by a surface profilometer (a-Step 500, KLA-Tencor, CA, USA). The selected working parameters
were lateral force (0.5 N, 1.0 N, 2.0 N), mode (P mode, S mode), and power setting (2, 4, 8). SEM images were
obtained. Defect surface profiles were made on Microsoft Excel program using data obtained by a surface profilometer.
Results: Among P mode samples, there were similarities on defect surface profiles and SEM images regardless of lateral
force. The defects created in P mode were narrow and shallow although the depth and the width increased as power setting
changed low (2) to high (8). In P mode samples, the defect depth was the greatest when lateral force of 0.5 N was
applied. However all the depths were smaller than 1 m. SEM images of Lateral force of 0.5 N, S mode, power setting 2
and 4 were similar to that of P mode, but the other SEM images of S mode showed discernible changes. Defect depth of
S mode samples was the greatest when lateral force of 1.0 N was applied.
Conclusions: Within the limitations of this study, it can be concoluded that removing capability of piezoelectric scaler with
scaler tip becomes maximized as power level becomes higher but the capability is restricted when excessive lateral force is
applied on scaler tip. (J Korean Acad Periodontol 2009;39:385-390)

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