8 research outputs found
๋ค์ํ ๊ฒฐํฉ์ฉ ๋์ฌ ์ ์ฉ์ด ์ง๋ฅด์ฝ๋์ ์ฝ์ด์ ์ ์ฅ ๋์ฌ ์ฌ์ด์ ๊ฒฐํฉ ๊ณ๋ฉด ์์ ์ฑ์ ๋ฏธ์น๋ ์ํฅ
ํ์๋
ผ๋ฌธ (๋ฐ์ฌ)-- ์์ธ๋ํ๊ต ๋ํ์ : ์น์๊ณผํ๊ณผ, 2015. 2. ํ์ค์.Objectives: The purposes of this study were to evaluate the effects of intermediate ceramics on the adhesion between the zirconia core and veneer ceramics.
Materials and methods: The polished surfaces of fully sintered Y-TZP blocks received three different treatments: 1) connector (C), 2) liner (L), or 3) wash layer (W). All the treated zirconia blocks were veneered with either a) fluorapatite glass-ceramic (E) or b) feldspathic porcelain (V) and divided into four groups (CE, CV, LE and WV). For the control group, the testing surfaces of metal blocks were veneered with feldspathic porcelain (VM). All veneered blocks were sectioned into bars (3 mm ร 3 mm ร 7 mm), perpendicularly to the interface. A half of the samples in each group (n = 21) were exposed to thermocycling for 20,000 cycles. The temperature was altered between 5ยฐC and 55ยฐC with an immersion time of 30 seconds and a transfer time of 2 seconds. The other half of the specimens were stored at room temperature under dry conditions. All specimens were subjected to the shear test, and the failed surfaces were microscopically examined. The elemental distribution at the zirconia core/veneer interface was analyzed. The bond strength data of the groups were compared with one-way analysis of variance (ANOVA) and the post hoc analyses were conducted using a Tukey test (ฮฑ=0.05).
Results: The specimens in Group CE and CV exhibited significantly greater mean bond strength values than those in Group LE and WV, respectively (P<0.05). However, the mean bond strengths significantly decreased in the connector groups (CE and CV) after thermocycling (P<0.05). The elemental analysis suggested diffusion of ceramic substances into the zirconia surface.
Conclusions: A glass-ceramic based connector is significantly more favorable to core/veneer adhesion than the other intermediate ceramics evaluated in the study. However, thermocycling affected the bond strength at the core/veneer interface differently according to the intermediate ceramics.I. INTRODUCTION
II. MATERIALS AND METHODS
III. RESULTS
IV. DISCUSSION
V. CONCLUSIONS
REFERENCES
TABLES AND FIGURES
KOREAN ABSTRACTDocto
๊ฐํ ๊ฒฝ๊ณจ์ ์๋ฆฝ๋ ์ฐํ ํ๋ฉด์ฒ๋ฆฌ ์ํ๋ํธ(Branemarkโก Groovy)์ ์กฐ์ง ํํ ๊ณ์ธก ๋ฐ ํ๋ฆผ ํ ์คํฌ์ ๊ดํ ์คํ์ ์ฐ๊ตฌ
Thesis(masters) --์์ธ๋ํ๊ต ๋ํ์ :์น์๊ณผํ๊ณผ (์น๊ณผ๋ณด์ฒ ํ์ ๊ณต),2009.8.Maste
Fabrication of removable partial denture on scleroderma patient using 3-dimensional intraoral scanner
๋์งํธ ์น์ํ์์์ ์ฃผ์ํ ๋ฐ์ ์ค ํ๋์ธ 3์ฐจ์ ๊ตฌ๊ฐ์ค์บ๋๋ ์ต๊ทผ ๊ณ ์ ์ฑ ๋ณด์ฒ ๋ฌผ์ ๋๋ฆฌ ์ฌ์ฉ๋๊ณ ์์ผ๋ฉฐ ๊ฐ์ฒ ์ฑ ๋ณด์ฒ ๋ฌผ์์๋ ์ฌ์ฉ์ด ์ฆ๊ฐํ๊ณ ์๋ค. ์ ์ ์ฑ ํผ๋ถ๊ฒฝํ์ฆ์ ์ํ ์๋ฉด๋ถ ์ฐ์กฐ์ง์ ๊ฒฝํ๋ ๊ฐ๊ตฌ๋ ์ ํ์ ์ผ์ผ์ผ ์น์์์ค์ ์ผ๊ธฐํ๋ฉฐ ๊ธฐ์กด์ ํต์์ ์ธ ๋ณด์ฒ ์น๋ฃ๋ฅผ ์ด๋ ต๊ฒ ํ๋ค. ๋ณธ ์ฆ๋ก์์๋ ๋์งํธ ์น์ํ์ ๋ฐ์ ์ ํตํ 3์ฐจ์ ๊ตฌ๊ฐ์ค์บ๋๋ฅผ ์ด์ฉํ์ฌ ๊ฐ๊ตฌ๋ ์ ํ๊ณผ ๊ทธ์ ๋ฐ๋ฅธ ์๊ตฌ์ฆ์ ๊ฐ์ง ์ ์ ์ฑ ํผ๋ถ๊ฒฝํ์ฆ ํ์์์ 3์ฐจ์ ๊ตฌ๊ฐ๊ตฌ์กฐ๋ฅผ ๊ดํ์ธ์ ์ฑ๋ํ๊ณ , ์ด๋ฅผ ๋ฐํ์ผ๋ก 3D ํ๋ฆฐํฐ๋ฅผ ์ด์ฉํ ์์์์น ์ ์์ ํตํด 3์ฐจ์ ๊ตฌ๊ฐ์ค์บ๋๋ฅผ ํตํ ๊ฐ์ฒ ์ฑ ๋ณด์ฒ ๋ฌผ ์ ์์ ๊ฐ๋ฅ์ฑ์ ํ์ธํ์๋ค. ์ดํ ์ต์ข
์ง๋์น ์ ๋ฆฌ ํ ์ต์ข
๊ดํ์ธ์ ์ฑ๋ํ์ฌ ๊ตญ์์์น ๊ธ์๊ตฌ์กฐ๋ฌผ์ ์ ์ํ์๋ค. ๊ธ์๊ตฌ์กฐ๋ฌผ์ ์ ํฉ๋๋ ์์์ ์ผ๋ก ๋ง์กฑ์ค๋ฌ์ ์ผ๋ฉฐ ์ดํ ์ต์ข
๊ตญ์์์น ์ ์, ์ฅ์ฐฉํ์ฌ ์์ค๋ถ์์ ๋ํ ์๋ณต์ ์งํ, ์์์ ์ผ๋ก ๋ง์กฑ์ค๋ฌ์ด ๊ฒฐ๊ณผ๋ฅผ ์ป์ ์ ์์๋ค.
A three-dimensional (3D) intraoral scanner, which is one of the major developments in digital dentistry, is widely used in fixed prosthodontics. The application of intraoral scanner is now increasing in removable prosthodontics. Sclerotic change induced by scleroderma causes the limitation of mouth opening and multiple loss of the teeth. Conventional prosthodontic procedures are challenging for patients with this disease. This study showed a case of digital approach to the removable prosthodontic treatment of a patient who had the scleroderma and the consequent microstomia. At the provisional stage, the optical impression of patients oral structures was digitally obtained. Using a 3D printer, the provisional dentures were fabricated. After extraction of hopeless tooth, the definitive digital impression was taken and the metal frameworks were fabricated, based on the data acquired from the impression. The definitive removable partial dentures were completed and delivered to the patient, who was satisfied with the prostheses.N
Gingival Recontouring with Provisional Restoration in the Mandibular Anterior One-piece Mini-implant: A Case Report
Establishing aesthetic outcomes in peri-implant soft tissues of anterior implants is challenging for many clinicians. In this report, a 23-year-old woman with prolonged retention of the primary mandibular right central incisor was referred after completing orthodontic treatment. A one-piece mini-implant was immediately placed after extraction using a computer-designed stereolithographic surgical guide. After a healing period of 6 months, a second provisional restoration was fabricated for soft tissue molding. The resulting gingival contour was transferred to the final restoration by duplicating the gingival portion of the provisional crown with a gingival replica. This report describes a novel gingival recontouring method for one-piece mini-implants.N
Complete mouth rehabilitation with fixed implant-supported prosthesis using temporary denture and dental CAD-CAM
์ํ๋ํธ๋ฅผ ์ด์ฉํ ์๋ณต ์น๋ฃ์์ ์ฅ๊ธฐ์ ์ธ ์์ ์ ์ป๊ธฐ ์ํด์๋ ์ํ๋ํธ์ ์๋ฆฝ ์ ๋ณด์ฒ ์๋ณต์ ์ด์์ ์ธ ์์น์ ๊ฐ๋๋ก ์๋ฆฝํ๋ ๊ฒ์ด ์ค์ํ๋ค. ์ด๋ฅผ ์ํด์๋ ์ ํํ ์น๋ฃ๊ณํ์ ๋ฐ๋ฅธ ์์ ๊ณผ ๋ณด์ฒ ์น๋ฃ๊ฐ ์ด๋ฃจ์ด์ ธ์ผ ํ๋ค. ๋ณธ ์ฆ๋ก์์๋ ์บ๋์บ ๊ธฐ์ ์ ์ด์ฉํด ์์ ๊ณํ ์๋ฆฝ, ๊ณ ์ ์ฑ ์์ ๋ณด์ฒ ๋ฌผ ๋ฐ ์ต์ข
๋ณด์ฒ ๋ฌผ ์ ์์ ์งํํ์๋ค. ์ต์ข
๋ณด์ฒ ๋ฌผ์ ๊ณ ๋ คํ์ฌ ์ ์ํ ์์ ์ฉ ๊ฐ์ด๋๋ก ์ํ๋ํธ๋ฅผ ์๋ฆฝํ์๋ค. ์์ ์์น๊ฐ ๊ฐ์ง ํ์์ ์ฌ๋ฏธ์ ์ ๋ณด๋ฅผ ๊ณ ์ ์ฑ ์์ ๋ณด์ฒ ๋ฌผ๊ณผ ์ต์ข
๋ณด์ฒ ๋ฌผ์ ์ ์์ ํ์ฉํ์๋ค. ์ต์ข
์ ์ผ๋ก ๋จ์ผ๊ตฌ์กฐ ์ง๋ฅด์ฝ๋์๋ฅผ ์ด์ฉํ ์ ์
์ํ๋ํธ ๊ณ ์ ์ฑ ๋ณด์ฒ ์๋ณต์ผ๋ก ๊ธฐ๋ฅ ๋ฐ ์ฌ๋ฏธ์ ์ผ๋ก ํ์๊ฐ ๋ง์กฑํ ๋งํ ๊ฒฐ๊ณผ๋ฅผ ์ป์ ์ ์์๋ค.N
Full mouth rehabilitation utilizing computer guided implant surgery and CAD/CAM
Computer guided implant surgery์ computer-aided design/computer-aided manufacturing, computer guided implant surgery (CAD/CAM) ๊ธฐ์ ์ ๋ฐ์ ์ ์๋ณต ๊ธฐ๋ฐ ์ํ๋ํธ ์น๋ฃ์ ์์ฑ๋๋ฅผ ํ์ธต ๋ ๋์์ผ๋ฉฐ, 3D printing์ ํตํ ๊ตญ์์์น์ ์ ์๋ ๋น๋๊ฐ ๋๊ณ ์๋ค. ๋ณธ ์ฆ๋ก๋ ๋์งํธ ์น์ํ์ ์์
ํ๋ฆ์ ๋ฐ๋ผ์ ์ฝ๋น์ปดํจํฐ๋จ์ธต์ดฌ์์ ํตํ ์น๋ฃ ๊ณํ ์๋ฆฝ ๋ฐ ์์ ์ฉ ์คํ
ํธ์ ์ ์๊ณผ ๊ทธ๋ฅผ ๋ฐํ์ผ๋ก ํ ์ํ๋ํธ ์๋ฆฝ์ ํ์์ผ๋ฉฐ, ๋ง์ถค ์ง๋์ฃผ์ ๋ณด์ฒ ๋ฌผ์ ์ ์ํ์๋ค. ๊ทธ ํ ์ ์ ์๋ฒ ์๊ณผ 3D printing์ ํตํ ๊ตญ์์์น ๊ธ์ ๊ตฌ์กฐ๋ฌผ ๋ฐ ์ต์ข
์ ์ผ๋ก ์ง๋ฅด์ฝ๋์ ์จ๋ ์ด์ ์ ์์ ํตํด ์ ์
์๋ณต์ ์์ฑํ์ฌ ๊ธฐ๋ฅ๊ณผ ์ฌ๋ฏธ์ ์ผ๋ก ๋ง์กฑ์ค๋ฌ์ด ๊ฒฐ๊ณผ๋ฅผ ์ป์ ์ ์์๋ค.
Computer aided design and manufacturing and implant surgery using a guide template improve restoration-driven implant treatment procedures. This case utilized those digital technologies to make definitive prostheses for a patient. According to the work flow of digital dentistry, cone beam computed tomography established the treatment plan, which was followed to make the guide template for implant placement. The template guided the implants to be installed as planned. The customized abutments and surveyed fixed restorations were digitally designed and made. The metal framework of the removable partial denture was cast from resin pattern using an additive manufacturing technique, and the artificial resin teeth were replaced with the zirconia onlays for occlusal stability. These full mouth rehabilitation procedures provided functionally and aesthetically satisfactory results for the patient.N
Full mouth rehabilitation of a worn dentition using digital guided tooth preparation: a case report
๋์งํธ ์น์ํ์ด ๋ฐ์ ํจ์ ๋ฐ๋ผ ์น๊ณผ ์น๋ฃ ๋ฐฉ์๋ ๋ค์ํ๊ฒ ๋ณํํ๊ณ ์๋ค. ๋ณธ ์ฆ๋ก์์ ๋ ๊ตฌ์น๋ถ์ ๋ณ์ ์ธ ๋ง๋ชจ๋ก ์์ง ๊ณ ๊ฒฝ ์์ค์ ๋ณด์ด๋ ํ์์์ ์ ์ ํ ์์ง ๊ณ ๊ฒฝ์ ์ค์ ํ ํ, ๋์งํธ ๊ธฐ์ ์ ์ด์ฉํ์ฌ ์ต์ข
๋ณด์ฒ ๋ฌผ์ ์ฌ์ ์ ๋์์ธํ์๋ค. ์ด๋ฅผ ๋ฐํ์ผ๋ก ์น์ง์ ์ต๋๋ก ๋ณด์กดํ ์ ์๋๋ก ์น์ ์ญ์ ๋์ ๊ณ์ฐํ์์ผ๋ฉฐ, ๊ตฌ๋ด์์ ์น์ ์ญ์ ๋์ ๋ํ๋ด ์ค ์ ์๋ ๊ฐ์ด๋๋ฅผ ๋์์ธํ์๋ค. ๋ณธ ๊ฐ์ด๋๋ฅผ ์ด์ฉํจ์ผ๋ก์จ ๋ณต์กํ ๋ค์ ์น์์ ์ญ์ ๊ฐ ํธ๋ฆฌํ์ผ๋ฉฐ ๋ณด๋ค ์ ํํ๊ณ ๋น ๋ฅธ ์น์ ํ์ฑ์ด ๊ฐ๋ฅํ์๋ค. ์ดํ ์ด์ค ์ค์บ์ผ๋ก ์์ ๋ณด์ฒ ๋ฌผ์ ์ ๋ณด๋ฅผ ๋ฐ์ํ์ฌ ์ ์
์ง๋ฅด์ฝ๋์ ํฌ๋ผ์ด์ผ๋ก ์ต์ข
๋ณด์ฒ ๋ฌผ์ ์ ์ํ์๋ค. ๋์งํธ ๊ธฐ์ ์ ์ด์ฉํ์ฌ ์ ์
์๋ณต ์ฆ๋ก์ ์ ์ ๊ณํ๋ถํฐ ์ต์ข
๋ณด์ฒ ๋ฌผ ์ฅ์ฐฉ๊น์ง์ ๋ณต์กํ ๊ณผ์ ์ ๋น ๋ฅด๊ณ ๊ฐํธํ๊ฒ ํด๊ฒฐํ ์ ์์ด, ํ์์ ์ ์๊ฐ ๋ชจ๋ ๋ง์กฑํ ์ ์์๋ค.N
The dimension analysis of prepared natural teeth for developing customized zirconia block
๋ชฉ์ : ์ง๋ฅด์ฝ๋์๋ ์๊ฒฐ ๊ณผ์ ์์ 3์ฐจ์์ ์ผ๋ก ์์ถ์ด ์ผ์ด๋๊ธฐ ๋๋ฌธ์, ์ํ์ง ์๋ ์ฒด์ ๋ณํ์ ๋ฐ๋ฅธ ์ค์ฐจ๊ฐ ์กด์ฌํ์ฌ ์์ ์๊ฒฐ๋ ์ง๋ฅด์ฝ๋์๋ฅผ ๋ฐ๋งํ์ฌ, ์ค์ฐจ๋ฅผ ์ค์ด๋ ค๋ ๋
ธ๋ ฅ์ด ์์์ผ๋, ์ฌ๋ฃ์ ๋จ๋จํจ์ผ๋ก ์ธํด ๋ฐ๋ง ์๊ฐ์ด ์ค๋ ๊ฑธ๋ฆฌ๊ณ , ๋ฐ๋ง๊ธฐ๊ตฌ์ ์์์ด ์๊ธธ ์ ์๊ณ , ๊ธฐ๊ณต ๊ณผ์ ์ค์นฉ ์์ฑ์ด ์์ ์ ์๋ค. ์ญ์ ๋ ์น์์ ํ๊ท ๊ฐ์ ๊ตฌํ์ฌ ์ ์๋ ๋ง์ถค ์ง๋ฅด์ฝ๋์ ๋ธ๋ฝ์ ์ด๋ฌํ ๋จ์ ์ ๊ทน๋ณต ํ ์ ์์ ๊ฒ์ด๋ค.
์ฌ๋ฃ ๋ฐ ๋ฐฉ๋ฒ: ์ญ์ ๋ ์น์๋ค์ ๋ชจ๋ธํํ์ฌ ์ค์บ ํ ์ป์ด์ง STL file์ ์ด์ฉํ์ฌ, ์น์ ํฌ๊ธฐ๋ฅผ ๋ถ์ํ์๋ค. Mimics ๋ฐ ํฌํ ์ต์ ์ฌ์ฉํ์ฌ ๊ฐ๊ฐ์ ์น์์ ํก๋จ๋ฉด, ์ ๋๋ฉด, ์์๋ฉด, ์ธ ๋ฉด์ ๊ธฐ์ค๋ฉด์ผ๋ก ์ ํ์ฌ, ๊ฐ๊ฐ์ ๋ฉด์ 3D volume์ ํฌ์ ํ ์ธ๊ณฝ์ ํฌ๊ธฐ๋ ์ธ๊ณฝ ์ ์ ์ ํตํด, ๋ด๊ณฝ์ ํฌ๊ธฐ๋ ๋ด๋ถ ํ์ ์๋จ ๋ถ ๋ณ๊ณก์ ์ ์ ์ ์ ๊ตฌํ์ฌ ๊ฐ๊ฐ ์น์์ ํฌ๊ธฐ๋ฅผ ๋ถ์ํ์๋ค.
๊ฒฐ๊ณผ: ์ธก์ ์์ ๋ณด์ฌ์ค ์ญ์ ๋ ์ ์น๊ตฐ(N = 57) ์น์์ ํ๊ท ์น๊ด ๊ธธ์ด๋ 6.60 ยฑ 1.05 mm, ๊ทผ์์ฌ 2.98 ยฑ 0.73 mm, ํ์ค 2.04 ยฑ 0.73 mm ์ด๊ณ , ์๊ตฌ์น๊ตฐ(N = 15) ์น์์ ํ๊ท ์น๊ด ๊ธธ์ด๋ 5.37 ยฑ 1.49 mm, ๊ทผ์์ฌ 4.10 ยฑ 1.78 mm, ํ์ค 5.86 ยฑ 1.55 mm, ๋๊ตฌ์น๊ตฐ(N = 13) ์น์์ ํ๊ท ์น๊ด๊ธธ์ด๋ 5.11 ยฑ 1.29 mm, ๊ทผ์์ฌ 6.80 ยฑ 1.18 mm, ํ์ค 7.34 ยฑ 1.40 mm ์ด๋ค.
๊ฒฐ๋ก : ํ๊ตญ์ธ์ ์ ์น๋ถ, ์๊ตฌ์น๋ถ, ๋๊ตฌ์น๋ถ ์น์์ ์ญ์ ๋๊ณผ ์น์ ํฌ๊ธฐ ๊ฐ์ ํ๊ท ๊ฐ์ ๊ตฌํจ์ผ๋ก์จ ๊ทธ ๊ฐ์ ์ด์ฉํ์ฌ ๋ง์ถคํ ์ง๋ฅด์ฝ๋์ ๋ธ๋ฝ์ ๋ง๋ค ์ ์๋ค.
Purpose: Unpredictable shrinkage of zirconia during sintering process causes discrepancy. Therefore, there have been attempts to reduce discrepancy by milling zirconia after sintering. However, due to the hardness of sintered zirconia, milling takes longer time, causes damage to the machine and causes chip formation. With customized zirconia block using the mean dimension of prepared natural dentition, it is expected to overcome these shortcomings. Materials and methods: The mean dimension of prepared natural dentition was analyzed as STL file after scanning of prepared teeth treated at SNUDH. The transverse, frontal and sagittal planes were set using Mimics and Photoshop. 3D volume was projected on each plane, and the outer line was measured through external tangent line, and the inner line was measured through inflection point of tangent line. Results: The mean height of prepared incisal (N = 57) is 6.60 ยฑ 1.05 mm, mesiodistal length is 2.98 ยฑ 0.73 mm, buccolingual length is 2.04 ยฑ 0.73 mm. The mean height of prepared premolar (N = 15) is 5.37 ยฑ 1.49 mm, mesiodistal length is 4.10 ยฑ 1.78 mm, buccolingual length is 5.86 ยฑ 1.55 mm. And the mean height of prepared molar (N = 13) is 5.11 ยฑ 1.29 mm, mesiodistal length is 6.80 ยฑ 1.18 mm, buccolingual length is 7.34 ยฑ 1.40 mm. Conclusion: Using the mean dimension of prepared natural dentition, it is expected to be able to fabricate customized zirconia block.N