인상채득방법이 임플란트 주모형의 정확성에 미치는 영향
EFFECT OF IMPRESSION TECHNIQUE ON THE ACCURACY OF MASTER CAST FOR IMPLANT PROSTHESISR
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Abstract
Statement of problem: Major objective in making on implant-supported prosthesis is the production of superstructure that exhibits a passive fit when connected to multiple abutments. One requirement to ensure passive fit is to make an accurate impression. Purpose: The purpose of this study was to compare the accuracy of master cast fabricated by using different impression methods at the different impression levels. Material and method: The master model used in this study was resin block having four implant analogs. Impression method studied were 1) direct method on fixture level (Group FIX-D), 2) indirect method on fixture level(Group FIX-I), 3) modified indirect method on fixture level(Group FIXM) 4) direct method on abutment level(Group AB-D) and 5) indirect method on abutment level( Group AB-I). Each of the five groups took 10 impressions. Fifty impressions were made for master cast by using Impregum F. impression material loaded on individual tray. Three dimensional measuring microscope was used to measure the inter-implant distance. Error rate of each inter-implant distance were calculated and evaluated. Results: The results were as follows. 1. Group FIX exhibited higher accuracy than group AB. 2. In group FIX, modified indirect method showed the highest accuracy, while indirect method showed the lowest accuracy. In group Ab, indirect method showed the higher accuracy than direct method. 3. Group FIX showed larger horizontal error than group AB. But, group AB showed the larger vertical error than group FIX. 4. Group Fix-M showed smallest vertical and horizontal error. Conclusion: An impression method have more effect on accuracy of master model than an impression level. A modified indirect method showed smallest vertical and horizontal error.
참고문헌 (25)
- Adell R, "A 15-year study of osseointegrated implantsin the treatment of the edentulousjaw", 10, pp.387~416 (1981)
- Han ET, "A comparativeanalysis of the accuracy of implant impressiontechniques by using strain gauge", 33, pp.359~ (1995)
- Burguete RL, "Tightening characteristics for screwedjoints in osseointegrated dental implants", 71, pp.592~9 (1994)
- Zarb GA, "The longitudinalclinical effectiveness of osseointegrateddental implants"
- Humphries RM, "Theaccuracy of implant master casts constructedfrom transfer impressions", 5, pp.331~6 (1990)
- "Forces andmovements on Bra ¨nemark implants", pp.241~7
- Sones AD, "Complications with osseointegratedimplants", 62, pp.581~5 (1989)
- Barrett MG, "Theaccuracy of six impression techniques forosseointegrated implants", pp.75~82
- Assif D, "Accuracyof implant impression techniques", 11, pp.216~22 (1996)
- Carr AB, "A comparison of impressiontechniques for a five implant mandibularmodel", 6, pp.448~55
- Assif D, "Comparative accuracy of implant impressionprocedures", 12, pp.113~21
- Phillips KM, "The accuracy of three implant impressiontechnique", pp.533~40
- Rodney J, "Dimensional accuracy of two implant impressioncopings", 70, pp.385~ (1991)
- Misch CE, "Density of bone : effect ontreatment plans, surgical approach, healing,and progressive loading", 10, pp.303~11 (1995)
- Worthington P, "The Swedish system of osseo-integratedimplants problems and complicationsencountered during a 4-year trial period", pp.77~84
- Sellers GC, "Direct assembly framework forosseointegrated implant prosthesis", 62, pp.662~8 (1989)
- Clelland NL, "Comparisonof strains transferred to a bone simulantbetween as-cast and post-soldered implantframeworks for a five-implant-supportedfixed prosthesis", 5(3), pp.193~200 (1996)
- Jemt T, "In vivo measurements of precisionfit involving implant-supported prosthesesin the edentulous jaw", 11, pp.151~8 (1996)
- Henry PJ, "An alternative method for theproduction of accurate casts and occlusalrecords in osseointegrated implant rehabilitation", 58, pp.694~7 (1987)
- Tautin FS, "Impression making for osseointegrateddenture", 54, pp.250~1
- Liou AD, "Accuracy of replacing three taperedtransfer impression copings in two elastomericimpression material", 6, pp.377~83 (1993)
- Wee AG, "Comparison of impression materialsfor direct multi-implant impressions", 83, pp.323~31 (2000)
- Spector M, "Anevaluation of impression techniques for osseointegratedimplants", 63, pp.444~7
- Carr AB, "The accuracy of implantverification casts compared with castsproduced from a rigid transfer coping technique", 5, pp.248~52 (1996)
- Lorenxoni M, "Comparison ofthe transfer precision of three different impressionmaterials in combination with transfercaps for the Frialit-2 system", 27, pp.629~38 (2000)