10 research outputs found

    Comprison of surface roughness of various laminate veneer porcelain according to polishing methods

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    ์น˜์˜ํ•™๊ณผ/์„์‚ฌ[ํ•œ๊ธ€] ๋ผ๋ฏธ๋„ค์ดํŠธ ๋„์žฌ์˜ ๊ธ€๋ž˜์ด์ง•๋œ ํ‘œ๋ฉด์„ ์ž„์ƒ๊ณผ์ •์—์„œ ์‚ญ์ œํ•˜์—ฌ ์กฐ์ •ํ•œ ํ›„์—๋Š” ๋„์žฌ๋กœ์—์„œ ๋‹ค์‹œ ๊ธ€๋ž˜์ด์ง•ํ•˜๊ธฐ๊ฐ€ ์–ด๋ ค์šฐ๋ฏ€๋กœ ์‚ญ์ œ๋กœ ์ธํ•˜์—ฌ ๊ฑฐ์น ์–ด์ง„ ํ‘œ๋ฉด์„ ํ™œํƒํ•œ ํ‘œ๋ฉด์„ ๊ฐ–๋„๋ก ์žฌํ˜•์„ฑํ•˜๊ธฐ ์œ„ํ•˜์—ฌ ์—ฐ๋งˆ ๊ณผ์ •์ด ํ•„์š”ํ•˜๋‹ค. ์ด์— ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” 4์ข…์˜ ๋ผ๋ฏธ๋„ค์ดํŠธ ๋„์žฌ๋ฅผ ์ž„์ƒ๊ณผ์ •์—์„œ์™€ ๊ฐ™์ด ๋‹ค์ด์•„๋ชฌ๋“œ ํฌ์ธํŠธ๋กœ ์‚ญ์ œํ•œ ํ›„ ์กฐ์ •๋œ ๋„์žฌ ํ‘œ๋ฉด์„ ํ˜„์žฌ ์‚ฌ์šฉ๋˜๊ณ  ์žˆ๋Š” ์—ฐ๋งˆ ๋ฐฉ๋ฒ•์ธ Durawhite stone, Ceramiste points, Exa cerapol, ๋„์žฌ ์—ฐ๋งˆ์šฉ rubber wheel, ๋‹ค์ด์•„๋ชฌ๋“œ ์—ฐ๋งˆ paste๋“ฑ์œผ๋กœ ์—ฐ๋งˆํ•˜๋ฉด์„œ ๊ฐ ๋‹จ๊ณ„๋งˆ๋‹ค ์ฃผ์‚ฌ์ „์žํ˜„๋ฏธ๊ฒฝ๊ณผ ํ‘œ๋ฉด์กฐ๋„๊ธฐ๋กœ ํ‘œ๋ฉด๊ฑฐ์น ๊ธฐ๋ฅผ ์ธก์ • ํ‰๊ฐ€ํ•˜์—ฌ, ์ž๊ฐ€ ๊ธ€๋ž˜์ด์ง• ํ‘œ๋ฉด๊ณผ ๊ธ€๋ž˜์ด์ง• ๋ถ„๋ง์„ ์‚ฌ์šฉํ•œ ํ‘œ๋ฉด๊ณผ ๋น„๊ตํ•˜๊ณ , ๋ผ๋ฏธ๋„ค์ดํŠธ ๋„์žฌ๊ฐ„์˜ ์—ฐ๋งˆ ๋ฐฉ๋ฒ•๋ฐ ๋‹จ๊ณ„์— ๋”ฐ๋ฅธ ํ‘œ๋ฉด๊ฑฐ์น ๊ธฐ๋ฅผ ๋น„๊ตํ•˜์—ฌ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ฒฐ๊ณผ๋ฅผ ์–ป์—ˆ๋‹ค. 1. 4์ข…์˜ ๋ผ๋ฏธ๋„ค์ดํŠธ ๋„์žฌ์ธ Colorlogic, Excelco, Vintage, Vitadur alpha ์ œํ’ˆ์‚ฌ์ด์—์„œ๋Š” ํ‰๊ท ํ‘œ๋ฉด๊ฑฐ์น ๊ธฐ Ra ๊ฐ’์˜ ๋ถ„์„๊ณผ ์ฃผ์‚ฌ์ „์žํ˜„๋ฏธ๊ฒฝ ์†Œ๊ฒฌ์—์„œ ์—ฐ๋งˆ ๋ฐฉ๋ฒ• ๋ฐ ๋‹จ๊ณ„๋ณ„ ํ‘œ๋ฉด๊ฑฐ์น ๊ธฐ์˜ ์ฐจ์ด๊ฐ€ ์—†์—ˆ๋‹ค. 2. ์—ฐ๋งˆ ๊ธฐ๊ตฌ๋“ค๋กœ ์—ฐ๋งˆ์‹œ ๊ธฐํฌ๊ฐ€ ์กด์žฌํ•˜๋ฏ€๋กœ ์ฃผ์‚ฌ์ „์žํ˜„๋ฏธ๊ฒฝ ์†Œ๊ฒฌ์—์„œ ๊ธ€๋ž˜์ด์ง•๋œ ํ‘œ๋ฉด๋ณด๋‹ค ๊ฑฐ์นœ ํ‘œ๋ฉด์„ ๋ณด์˜€๋‹ค. 3. Insta-Glaze ๋‹ค์ด์•„๋ชฌ๋“œ ์—ฐ๋งˆ paste๋กœ ์—ฐ๋งˆ์‹œ ํ‰๊ท ํ‘œ๋ฉด๊ฑฐ์น ๊ธฐ Ra ๊ฐ’์—์„œ ๋‚ฎ์€๊ฐ’์„ ๋ณด์˜€์ง€๋งŒ ์ž๊ฐ€ ๊ธ€๋ž˜์ด์ง•ํ•œ 1๊ตฐ๊ณผ๋Š” ํ†ต๊ณ„ํ•™์  ์ฐจ์ด๊ฐ€ ์—†์—ˆ๋‹ค. 4. ๊ธ€๋ž˜์ด์ง• ๋ถ„๋ง์„ ์‚ฌ์šฉํ•œ 2๊ตฐ์€ ์ฃผ์‚ฌ์ „์žํ˜„๋ฏธ๊ฒฝ ์†Œ๊ฒฌ์—์„œ๋Š” ๊ฐ€์žฅ ํ‘œ๋ฉด๊ฑฐ์น ๊ธฐ๊ฐ€ ๋‚ฎ์•˜์ง€๋งŒ, ํ‘œ๋ฉด์˜ ํŒŒ๋™์„ฑ์œผ๋กœ ์ธํ•˜์—ฌ ์ž๊ฐ€ ๊ธ€๋ž˜์ด์ง• ํ‘œ๋ฉด์˜ 1๊ตฐ๊ณผ ๋‹ค์ด์•„๋ชฌ๋“œ ์—ฐ๋งˆ paste๋กœ ์—ฐ๋งˆํ•œ 8๊ตฐ๋ณด๋‹ค ๋†’์€ ํ‰๊ท ํ‘œ๋ฉด๊ฑฐ์น ๊ธฐ Ra ๊ฐ’์„ ๋‚˜ํƒ€๋ƒˆ๋‹ค. 5.๋‹ค์ด์•„๋ชฌ๋“œ ํฌ์ธํŠธ, Durawhite stone, Ceramiste points๋กœ ๊ตฌ์„ฑ๋˜๋Š” Shofu ๋ผ๋ฏธ๋„ค์ดํŠธ ์—ฐ๋งˆ kit๋กœ๋Š” ์ฃผ์‚ฌ์ „์žํ˜„๋ฏธ๊ฒฝ ์†Œ๊ฒฌ๊ณผ ํ‘œ๋ฉด๊ฑฐ์น ๊ธฐ ๋ถ„์„์‹œ ์ ์ ˆํ•œํ‘œ๋ฉด ํ™œํƒ ์ •๋„๋ฅผ ์–ป์„์ˆ˜ ์—†์—ˆ๋‹ค. ์ด์ƒ์˜ ๊ฒฐ๊ณผ๋กœ ๋ณผ๋•Œ ์—ฐ๋งˆ ๊ธฐ๊ตฌ๋ฅผ ์ด์šฉํ•˜์—ฌ ๊ธ€๋ž˜์ด์ง•๋œ ํ‘œ๋ฉด๋ณด๋‹ค ๋‚ฎ์€ ํ‘œ๋ฉด๊ฑฐ์น ๊ธฐ๋ฅผ ์–ป์„ ์ˆ˜๋Š” ์žˆ์œผ๋‚˜ ์ž„์ƒ์ ์œผ๋กœ ๋ณด๋‹ค ์™„์ „ํ•œ ๊ฒฐ๊ณผ๋ฅผ ์–ป์„ ์ˆ˜ ์—†์œผ๋ฏ€๋กœ ๊ธ€๋ž˜์ด์ง•๋œ ํ‘œ๋ฉด๊ณผ ๊ฐ™๊ฑฐ๋‚˜ ๊ทธ ์ด์ƒ์˜ ํ‘œ๋ฉด ํ™œํƒ๋„๋ฅผ ์œ„ํ•ด์„œ๋Š” ๋„์žฌ ์žฌ๋ฃŒ์™€ ์ถ•์„ฑ๋ฐฉ๋ฒ• ๋ฐ ์—ฐ๋งˆ ๊ธฐ๊ตฌ์™€ ์—ฐ๋งˆ ๋ฐฉ๋ฒ•์— ๋Œ€ํ•œ ๊ฐœ๋ฐœ์ด ํ•„์š”ํ•˜๋ฆฌ๋ผ ์ƒ๊ฐ๋˜๋ฉฐ,๊ธ€๋ž˜์ด์ง• ํ‘œ๋ฉด์ด ํŒŒ๊ดด๋˜์ง€ ์•Š๋„๋ก ์ž„์ƒ ๊ณผ์ •๊ณผ ๊ธฐ๊ณต๊ณผ์ •์—์„œ ์ฃผ์˜๋ฅผ ๊ธฐ์šธ์—ฌ์•ผ ํ•˜๊ฒ ๋‹ค [์˜๋ฌธ] After adjusting glazed surface of laminate veneer porcelain by reduction in the clinical procedure, an additional polishing procedure is required to smoothen the roughened surface by reduction, as it is difficult to glaze it again in the furnace. In this study, four kinds of laminate veneer porcelain were ground with diamond points as drone in the clinical procedure. The adjusted porcelain surface was polished with Durawhite stone, Ceramiste points, Exa cerapol, Porcelain polishing wheel, Diamond polishing paste, The degree of surface roughness was evaluated with SEM and profilometer at each step. The self glazed surface and the glazed surface with glazing powder were compared with the polished surface and surface roughness of four kinds of laminate veneer porcelain according to the polishing method and step were observed. The fellowing results were obtained: 1. There was no difference in the average surface roughness Ra value and the surface roughness obserbed under SEM according to the polishing methods and steps used, among the four kinds of laminate veneer porcelain including Colorlogic, Exelco, Vintage, and Vitadur alpha products. 2. Due to porosities, the surface in the course of polishing by polishing instrlunents was rougher than the glazed surface, evaluated with a SEM. 3. Insta-Glaze diamond polishing paste has no statistical difference with self glazed group 1, although it has a lower value in average surface roughness Ra value. 4.Group 2 which was glazed with glazing powder was lowest in view of SEM, but it revealed higher surface roughness ?a value than group 1, the glazed surface and group 11, polished by diamond polishing paste, due to surface waveless. 5. Propel surface smoothness could not be in the surface roughness analysis of SEM and profilometer by Shofu laminate polishing kit composed of Diamond point, Durawhite stone and Ceramiste points. Based on the results of this study, the following conclusions can be. drawn. We obtain low surface roughness than glazed surface by polishing instruments, but not perfect results clinically. In order to obtain a perfect clinical result or a surface smoothness comparable to glazed porcelain there is a need for further improvement of porcelain materials, condensation techniques, polishing instruments and polishing methods. Furthermore care should he taken not to breakdown the glazed surface during the clinical and laboratory procedure.restrictio

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    ์น˜์˜ํ•™๊ณผ/๋ฐ•์‚ฌ[ํ•œ๊ธ€] ๊ณจ์œ ์ฐฉ์„ฑ ์ž„ํ”Œ๋ž€ํŠธ๋Š” ๋ฌด์น˜์•… ๋˜๋Š” ๋ถ€๋ถ„ ๋ฌด์น˜์•…์—์„œ ๊ธฐ๋Šฅ์„ฑ์„ ํšŒ๋ณตํ•˜๋Š” ์ด์ƒ์ ์ธ ์น˜๋ฃŒ๋กœ ์‹œํ–‰๋˜๊ณ  ์žˆ์œผ๋ฉฐ ์ž์—ฐ์น˜์˜ ๊ธฐ๋Šฅ๊ณผ ๋น„๊ตํ•˜์—ฌ ์ž„ํ”Œ๋ž€ํŠธ์˜ ๊ธฐ๋Šฅ์— ๋Œ€ํ•œ ์—ฐ๊ตฌ๊ฐ€ ๊ณ„์†๋˜์–ด ์™”๋‹ค. ๋ณธ ์—ฐ๊ตฌ๋Š” ์ž„ํ”Œ๋ž€ํŠธ๊ฐ€ ์ž์—ฐ์น˜์˜ ์ €์ž‘๊ธฐ๋Šฅ์„ ๋Œ€์ฒดํ•  ์ˆ˜ ์žˆ๋Š”์ง€์— ๋Œ€ํ•˜์—ฌ ์•Œ์•„๋ณด๊ณ ์ž ์ €์ž‘๊ธฐ๋Šฅ์˜ ์ง€ํ‘œ์ธ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์„ ๋น„๊ตํ•˜์˜€์œผ๋ฉฐ ์ธก์ • ๋ฐฉ๋ฒ•์€ ์ƒํ•˜์•…๊ฐ„์˜ ์ˆ˜์ง๊ณ ๊ฒฝ์˜ ์ฆ๊ฐ€๊ฐ€ ์žˆ๋Š” ํŽธ์ธก ๊ตํ•ฉ๋ ฅ ์ธก์ •๊ธฐ(Customized bite force recorder, Denbotics Co. Korea)์™€ ์ˆ˜์ง ๊ณ ๊ฒฝ์˜ ์ฆ๊ฐ€๊ฐ€ ์—†๋Š” ์–‘์ธก ๊ตํ•ฉ๋ ฅ ์ธก์ •๊ธฐ(Dental Prescale System, Fuji Film Co. Tokyo, Japan)๋ฅผ ์ด์šฉํ•˜์˜€๋‹ค. ์ตœ๊ทผ 10๋…„๊ฐ„ Branemark ์ž„ํ”Œ๋ž€ํŠธ์™€ ITI ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ์น˜๋ฃŒ๋ฅผ ๋ฐ›์€ 59๋ช…์„ ๋Œ€์ƒ์œผ๋กœ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ๊ณผ ๋™์ผ ์•…๊ถ์˜ ๋ฐ˜๋Œ€ํŽธ ์ž์—ฐ์น˜์—์„œ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ๊ณผ ๊ทผํ™œ์„ฑ๋„๋ฅผ ์ธก์ •ํ•˜์˜€์œผ๋ฉฐ ์ž„ํ”Œ๋ž€ํŠธ์˜ ์ข…๋ฅ˜, ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ์˜ ๊ธฐ๋Šฅ ๊ธฐ๊ฐ„, ์ž„ํ”Œ๋ž€ํŠธ์˜ ์ง๊ฒฝ, ๋‹จ์ผ ์ž„ํ”Œ๋ž€ํŠธ์™€ ์ž„ํ”Œ๋ž€ํŠธ ์—ฐ๊ฒฐ๊ณ ์ •(splinting) ๋ณด์ฒ ๋ฌผ, ์„ฑ๋ณ„, ์—ฐ๋ น์— ๋”ฐ๋ผ ๋น„๊ต๋ถ„์„ ํ•˜์˜€์œผ๋ฉฐ ์ž„ํ”Œ๋ž€ํŠธ์— ๋Œ€ํ•œ ์„ค๋ฌธ์ง€๋ฅผ ์ž‘์„ฑํ•˜์—ฌ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ฒฐ๊ณผ๋ฅผ ์–ป์—ˆ๋‹ค. 1. ํŽธ์ธก ๊ตํ•ฉ๋ ฅ ์ธก์ •๊ธฐ๋กœ ์ธก์ •ํ•œ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์€ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ์ด 186ยฑ80N, ๋Œ€์กฐ๊ตฐ ์ž์—ฐ์น˜๋Š” 177ยฑ81N์ด์—ˆ๊ณ , ์–‘์ธก ๊ตํ•ฉ๋ ฅ ์ธก์ •๊ธฐ(Dental Prescale System)๋กœ ์ธก์ •ํ•œ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์€ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ์ด 99ยฑ87N, ๋Œ€์กฐ๊ตฐ ์ž์—ฐ์น˜๊ฐ€ 119ยฑ88N์ด์—ˆ์œผ๋ฉฐ ๋‘ ๊ฐ€์ง€ ์ธก์ • ๋ฐฉ๋ฒ•์œผ๋กœ ์ธก์ •ํ•œ ๊ตฌ์น˜๋ถ€์˜ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ๊ณผ ์ž์—ฐ์น˜์˜ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์€ ์œ ์˜์„ฑ ์žˆ๋Š” ์ฐจ์ด๊ฐ€ ์—†์—ˆ๋‹ค. 2. ์ž„ํ”Œ๋ž€ํŠธ ์ข…๋ฅ˜์— ๋”ฐ๋ฅธ ํŽธ์ธก ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ๊ณผ Prescale ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ ๋น„๊ต ์‹œ Branemark ์ž„ํ”Œ๋ž€ํŠธ์™€ ITI ์ž„ํ”Œ๋ž€ํŠธ ์‚ฌ์ด์—๋Š” ์œ ์˜์„ฑ ์žˆ๋Š” ์ฐจ์ด๋Š” ์—†์—ˆ๋‹ค. 3. ๊ธฐ๋Šฅ ๊ธฐ๊ฐ„์— ๋”ฐ๋ฅธ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์˜ ๋น„๊ต ์‹œ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ์˜ ํŽธ์ธก ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์€ 6๊ฐœ์›” ์ด์ƒ์—์„œ, Prescale ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์€ 1๋…„ ์ด์ƒ์—์„œ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์ด ์ฆ๊ฐ€ํ–ˆ์œผ๋ฉฐ(P<0.05) ํŽธ์ธก ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์€ 6๊ฐœ์›” ์ดํ›„, Prescale ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์€ 1๋…„ ์ดํ›„ ์œ ์˜์„ฑ ์žˆ๋Š” ๋ณ€ํ™”๊ฐ€ ์—†์—ˆ๋‹ค. 4. ์ž„ํ”Œ๋ž€ํŠธ ์ง๊ฒฝ์— ๋”ฐ๋ฅธ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ ๋น„๊ต ์‹œ ํŽธ์ธก ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์€ ์œ ์˜ํ•œ ์ฐจ์ด๊ฐ€ ์—†์—ˆ์œผ๋‚˜, Prescale ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์—์„œ๋Š” wide diameter์˜ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ์ด regular diameter์˜ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ๋ณด๋‹ค ๋†’์•˜๋‹ค(P<0.05). 5. ๋‹จ์ผ ์ž„ํ”Œ๋ž€ํŠธ์™€ 2๊ฐœ ์ด์ƒ์˜ ์ž„ํ”Œ๋ž€ํŠธ๋ฅผ ์—ฐ๊ฒฐ๊ณ ์ •(splinting)ํ•œ ๋ณด์ฒ ๋ฌผ์˜ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ ๋น„๊ต ์‹œ ํŽธ์ธก ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ๊ณผ Prescale ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ ๋ชจ๋‘ ์œ ์˜์„ฑ ์žˆ๋Š” ์ฐจ์ด๋Š” ์—†์—ˆ๋‹ค. 6. ์„ฑ๋ณ„, ์—ฐ๋ น์— ๋”ฐ๋ฅธ ํŽธ์ธก ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ๊ณผ Prescale ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ ๋น„๊ต ์‹œ ์œ ์˜์„ฑ ์žˆ๋Š” ์ฐจ์ด๋Š” ์—†์—ˆ๋‹ค. 7. ํŽธ์ธก ๊ตํ•ฉ๋ ฅ ์ธก์ •๊ธฐ์™€ ์–‘์ธก ๊ตํ•ฉ๋ ฅ ์ธก์ •๊ธฐ(Dental Prescale System)๋กœ ์ธก์ •ํ•œ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์—์„œ ์ธก์ •๊ฐ’์€ ์ฐจ์ด๊ฐ€ ์žˆ์—ˆ์œผ๋ฉฐ(P<0.0001), ์–‘์„ฑ ์ƒ๊ด€๊ด€๊ณ„๋ฅผ ๋‚˜ํƒ€๋ƒˆ๋‹ค(r=0.52, P<0.05). 8. ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ์ธก๊ณผ ๋™์ผ ์•…๊ถ์˜ ๋ฐ˜๋Œ€ํŽธ ์ž์—ฐ์น˜์ธก์˜ ํ‘œ์ธต ๊ต๊ทผ๊ณผ ์ „์ธก๋‘๊ทผ์˜ ๊ทผํ™œ์„ฑ๋„๋Š” ํŽธ์ธก ๊ตํ•ฉ๋ ฅ ์ธก์ •๊ธฐ๋กœ ๋ฌผ ๋•Œ์™€ Dental Prescale System์œผ๋กœ ๋ฌผ ๋•Œ ์œ ์˜์„ฑ ์žˆ๋Š” ์ฐจ์ด๋Š” ์—†์—ˆ๋‹ค. 9. ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ์˜ ์ €์ž‘๊ธฐ๋Šฅ์— ๋Œ€ํ•œ ๋งŒ์กฑ๋„๋Š” 81.4%์˜€๋‹ค. ์ด์ƒ์˜ ๊ฒฐ๊ณผ๋กœ ๋ณผ ๋•Œ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ์˜ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์€ ํŽธ์ธก์—์„œ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์œผ๋กœ ๋ฌผ ๋•Œ์™€ ์ตœ๋Œ€ ๊ต๋‘๊ฐํ•ฉ์œ„(maximum intercuspal position)์—์„œ ์ž์—ฐ์น˜์™€ ์œ ์‚ฌํ•˜์˜€์œผ๋ฉฐ, ๋˜ํ•œ ์žฅ๊ธฐ๊ฐ„ ๊ธฐ๋Šฅ ์‹œ์—๋„ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ๊ณผ ์ž์—ฐ์น˜์˜ ์ตœ๋Œ€๊ตํ•ฉ๋ ฅ์ด ์œ ์‚ฌํ•˜์˜€๋‹ค. ๊ทธ๋Ÿฌ๋ฏ€๋กœ ์ž„ํ”Œ๋ž€ํŠธ ๋ณด์ฒ ๋ฌผ์ด ์ž์—ฐ์น˜์˜ ์ €์ž‘๊ธฐ๋Šฅ์„ ๊ฑฐ์˜ ์ •์ƒ์ ์œผ๋กœ ํšŒ๋ณตํ•  ์ˆ˜ ์žˆ์œผ๋ฆฌ๋ผ ์‚ฌ๋ฃŒ๋˜์—ˆ๋‹ค. [์˜๋ฌธ]During the previous several decades the osseointegrated implants have been considered as the most ideal therapy for the fully edentulous or partially edentulous patients. The researches on the function of implant had been performed to be compared with natural teeth. The purpose of this study was to compare the maximum occlusal force and electromyographic activity of implant prostheses to natural teeth with unilateral bite force recorder and dental prescale system. Fifty nine patients treated either with Branemark implants and ITI implants during the recent ten years were involved in this study. The maximum occlusal force were measured and categorized into implant type, functional periods, implant diameter, single implant and splinting implants. Within each category, subgroups were compared. The results were as follows. 1. The maximum occlusal forces of the implant prostheses and natural teeth were not significantly different where measured with unilateral bite force recorder and dental prescale system. 2. The maximum occlusal forces were not significantly different between Branemark implant and ITI implant prostheses. 3. The maximum occlusal forces of the implant prostheses had lower when compared with natural teeth during 1-6 months functional periods when measured with the unilareral bite force recorder(P<0.05) and 1-12 months functional periods when measured with the dental prescale system(P<0.05). After these periods there was not statistical significant difference between the implant prostheses and natural teeth. 4. The maximum occlusal forces of the wide diameter implant prostheses were higher than the maximum occlusal forces of the regular diameter implant prostheses when measured with dental prescale system(P<0.05), but there was no significant difference between the wide diameter implant prostheses and the regular diameter implant prostheses when measured with unilateral bite force recorder. 5. The maximum occlusal forces of the single implant prostheses were not significantly different with the splinting implants prostheses. 6. The maximum occlusal forces of the implant prostheses were not significantly different by age and sex. 7. There was positive correlation between maximum occlusal forces measured with unilateral bite force recorder and dental prescale system(r=0.52, P<0.05) but there was significantly different between maximum occlusal forces measured with unilateral bite force recorder and dental prescale system(P<0.0001). 8. The electromyographic activity of the anterior temporal muscle and superior masseter muscle had no statistically significant difference between the implant prostheses side and natural teeth of the other side in one arch during clenching and unilateral maximum biting. 9. According to the results of the questionnaire, 81.4% of the patients were satisfied with the masticatory function. In conclusion the maximum occlusal forces of the implant prostheses were not significantly different to natural teeth during clenching and unilateral maximum biting.ope
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