Scanning System and Reproduction of Adjustable Lower Dental Impression Tray

Journal of Institute of Control, Robotics and Systems (2011) 17(3):254-257 DOI:10.5302/J.ICROS.2011.17.3.254 ISSN:1976-5622 eISSN:2233-4335

I.

서론

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* (Corresponding Author)

: 2010. 11. 25., : 2010. 11. 26., : 2010. 12. 23.

: ([email protected])

: ([email protected] )

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치과용 트레이

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1997 [5]

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Scanning System and Reproduction of Adjustable Lower Dental Impression Tray

* ,

(Young-Youp Cha¹ and Sang-Ho Eom¹)

1

Wonkwang University

Abstract: This study was performed to development a dental three-dimensional laser scanning system and measure the accuracy

of new adjustable lower dental impression trays. Multiple impressions of a resin master model were made with custom, stock and new adjustable trays and vinyl polysiloxane impression material. The lower master model and resulting cast were compared using an dental scanning system. Each 3D image was superimposed onto the lower master model image and analyzed with custom software. Multiple measurements of the lower master model and casts were analyzed to determine the accuracy of tray types.

Keywords: dental system, scanning system, dental impression tray, CAD/CAM system

Copyright© ICROS 2011

스캐닝 시스템과 하악용 가변형 트레이의 재현성 255

. 1997 [5]

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(Rubber mould, Trimunt, Kyoto,Japan) (Polyurock, Metalor, Swiss)

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(Impression Tray, Frontierdental, Korea) .

2mm 3

(SR Ivolen, Ivoclar vivadent AG,

Liechtenstein) .

1995 [4]

, 1997 [5]

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CATIA V3R9(Dassault system,

France) . ABS (Acrylonitrile

butadiene styrene) , Unigraphics

(Unigraphics Solutions, USA) Fanuc (Fanuc Co, Japan)

NC .

10mm

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치과용 시스템

III. Scanning

Scanning

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X, Y, θ

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Scanning Scanning

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Fig. 1. Lower master model and measurement positions.

2. .

Fig. 2. Adjustable Lower dental impression tray.

3. Scanning .

Fig. 3. Photograph of the developed scanning system.

4. Scanning .

Fig. 4. Schematic of the developed scanning system.

256 차 영 엽 엄 상 호 ,

3 . 4 Visual

C++ Scanning

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3D Scanning x y

z 1㎛ z 3㎛

. 20㎛

120,000

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IV.

실험

5 3D

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60

3 2-way analysis of variance

(ANOVA; p < 0.05) .

3 (CATIA)

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E-F

127.5㎛ , E-G

74㎛ , E-H

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V.

결론

3

. 3

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(a) (b)

(c)

5. 3D (a), (b),

(c) .

Fig. 5. Example of 3D scanning result(a), reproduction(b), and measurement method(c) in lower dent.

6. .

Fig. 6. Deviation according to each tray in lower dent.

스캐닝 시스템과 하악용 가변형 트레이의 재현성 257

참고문헌

[1] J. M. Clancy, F. R. Scandrett, and R. L. Ettinger,

“Long-term dimensional stability of three current elastomers,” J Oral Rehabil, vol. 10, pp. 325-328, 1983.

[2] A. M. Lacy, H. Fukui, T. Bellman, and M. D.

Jendresen, “Time-dependent accuracy of elastomer impression materials. Part II: Polyether, polysulfides, and polyvinylsiloxane,” J Prosthet Dent, vol. 45, pp. 329- 333, 1981.

[3] W. B. Eames, J. C. Sieweke, S. W. Wallace, and L. B.

Roger, “Elastomeric impression materials: effect of bulk on accuracy,” J Prosthet Dent, vol. 41, pp. 304-307, 1979.

[4] D. S. Song, S. G. Kang, H. W. Cho, and J. K. Dong,

“Development of dentulous stock trays for koreans,” J

Wonkwang Dental Research Institute, vol. 5, no. 3, pp.

85-124, 1995.

[5] S. J. Shin, J. Y. Park, S. C. Oh, and J. K. Dong, “A Study on the Fitness of Dentulous Stock Tray Designed for Korean,” J Wonkwang Dental Research Institute, vol.

7, no. 1, pp. 193-209, 1997.

[6] J. K. Dong, S. C. Oh, and M. J. Kim, “Development of adjustable dental impression trays,” 10th Meeting of the

International College of Prosthodontists, Canada Halifax.

no. 51, 2003.

차 영 엽

1984 . 1987

. 1995

. 1995 ~ . .

엄 상 호

1995 . 2003

. 2005

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1. .

Table 1. Distance between each point according to tray types.

Location measured Tray Type Distance (mm) SD N DMM( )㎛ Duncan's Grouping

E-F

Master Model 26.41 0.01 A

Metal Tray 26.661 0.193 10 250.8 B

Custom Tray 26.537 0.223 10 127.5 AB

Adjustable Tray 26.574 0.186 10 164.2 AB

E-G

Master Model 50.441 0.054 A

Metal Tray 50.533 0.134 10 91.5 A

Custom Tray 50.515 0.125 10 74 A

Adjustable Tray 50.497 0.113 10 56.2 A

E-H

Master Model 37.485 0.053 A

Metal Tray 37.86 0.274 10 375.5 B

Custom Tray 37.746 0.205 10 260.9 AB

Adjustable Tray 37.685 0.255 10 200.4 AB

F-G

Master Model 38.205 0.032 A

Metal Tray 37.952 0.122 10 -252.8 B

Custom Tray 38.069 0.213 10 -135.7 AB

Adjustable Tray 37.979 0.195 10 -225.8 B

F-H

Master Model 50.277 0.042 A

Metal Tray 50.627 0.195 10 350.5 B

Custom Tray 50.585 0.086 10 307.6 B

Adjustable Tray 50.499 0.179 10 222.3 B

G-H

Master Model 42.003 0.002 A

Metal Tray 42.068 0.101 10 64.7 A

Custom Tray 42.144 0.162 10 140.5 A

Adjustable Tray 42.104 0.112 10 101 A