• Archives of Plastic Surgery
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• v.43 no.3
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• pp.229-236
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• 2016

Recently, diagnoses of and operations for medial orbital blowout fracture have increased because of the development of imaging technology. In this article, the authors review the literature, and overview the accumulated knowledge about the orbital anatomy, fracture mechanisms, surgical approaches, reconstruction materials, and surgical methods. In terms of surgical approaches, transcaruncular, transcutaneous, and transnasal endoscopic approaches are discussed. Reconstruction methods including onlay covering, inlay implantation, and repositioning methods are also discussed. Consideration and understanding of these should lead to more optimal outcomes.

• The Journal of Korean Academy of Prosthodontics
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• v.8 no.1
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• pp.25-29
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• 1968

The purposes of this study were to measure the film thickness of zinc phosphate cement between the casting restorations and preparation walls. In addition, the differences between finger press and non press techniques after the castings were seated completely on the preparation by an automatic mallet until the cement set were studied. The results were as follows : 1) In full cast crown, the cement film thickness on the side wall was thinner than that on the other walls. 2) In 3/4 crown and inlay, the cement thickness was thinner than that in cast crowns. 3) The cement of great W/P ratio showed thinner thickness than that of little W/P ratio. 4) The continuous finger press after the castings were seated completely on the preparations had few influence on the cement film thickness.

• The Journal of the Korean dental association
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• v.52 no.6
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• pp.354-362
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• 2014

With the development of digital dentistry, various intra-oral scanners which acquire intraoral image without conventional impression taking and stone pouring steps have been introduced. Fixed dental prostheses such as inlay, onlay, crown, and bridge fabricated by CAD/CAM technique combined with digital impressions is getting popular due to the recent rapid progress of digital impression taking system. In comparison with traditional prosthetic procedure, the advantages of intraoral image acquiring and CAD/CAM technique are as follows; the omission of conventional impression materials, reduced workflow step, and increased efficiency by online communication with clinic and laboratory. This review article covers some opinions about the suitable scanning procedures for the various prosthodontic treatments and the utilization of digital intraoral scanner and CAD/CAM system.

• The Journal of the Korean dental association
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• v.25 no.4 s.215
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• pp.359-363
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• 1987

72559 children, who visited the Dept. of Pedodontics, SNU Hospital from 1982 to 1985 were surveyed on the yearly tendency of dental treatment. The data were compared with those of previous reports, and the results were as follows, 1. The number out-patients were decreasing year by year. 2. Compared with those of 1982, in 1985, total number of visiting patient decreased to 14%, amalgam filling, 73.8% vital pulpotomy ; 69.55%, gold inlays ; 42.57%, Space maintainer ; 69.55%, tooth extraction ; 63.99% on the other hand, some items increased such as pulp extirpation ; 192%, canal filling ; 290%, 3. There revealed overall increasing tendency in almost all treatment items except Gold Inlay7s in from 1982 to 1985, compared with those from 1976 to 1979.

• 보존과학연구
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• s.26
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• pp.41-56
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• 2005

A set of horse bit from the Eonnam-ri site consists of three parts, pyo , ham , andinsu , and each part takes a shape of a piece of bar. According to current typological study, the pyo is S type, the insu is two-braided line type, and the outer rim of the ham is double rim type, respectively. According to X-ray test, inlaid design seems to have been decorated on the whole surface of the iron bit, originally. However, inlaid pattern partially remained. While the part of bit stopper is designed with flame pattern, the part of rein joint is designed with cloud pattern. According to XRF and XGT analysis of inlaid material, the content of silver is not more than 50%. The line inlay method making grooves on the surface of iron, then in laying a silver thread into them, and grinding the surface in a direction was adoptedin the manufacture of the iron bit.

• The Journal of the Korean dental association
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• v.16 no.3 s.106
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• pp.235-237
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• 1978

Dr. Walter Wright first presented the results of his studies on acrylic resins in July, 1937. The use of resins for adaptation in inlay and crown and bridge prosthesis was first reported in June 1940 by Harris. There has been now and acceptable list of several physical and mechanical properties of acrylic resins which have been studied to a considerable extent by various researchers, or determined from clinical experience. They include; pleasant esthetics, taste, odor, cleanliness, compatibility with oral tissue, dimensional stability, water sorption by imbibition, hardness, ease and success of repair, weight, thermal coefficient of expansion and strength to resist functional stress. The author carried a series of experiments forward to check the strength. Specimens which were cured at boiling temperature showed weaker strength than those ones which were cured at 72℃.

• Proceedings of the KACD Conference
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• 2003.11a
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• pp.570-571
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• 2003

This study was done to evaluate the shear bond strength between light-cured glass ionomer cement base and resin cement for luting indirect resin inlay and to observe bonding aspects which is produced at the interface between them by SEM(Scanning Electron Microscope). 1)Shear bond strength. Light-cured glass ionomer cement base were made in plastic molds(10mm diameter, 5mm thickness). Two type of light cured glass-ionomer cement were uesd.(중략)

• Restorative Dentistry and Endodontics
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• v.36 no.6
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• pp.490-497
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• 2011

Objectives: This study examined the effect of the uncured dentin adhesives on the bond interface between the resin inlay and dentin. Materials and Methods: Dentin surface was exposed in 24 extracted human molars and the teeth were assigned to indirect and direct resin restoration group. For indirect resin groups, exposed dentin surfaces were temporized with provisional resin. The provisional restoration was removed after 1 wk and the teeth were divided further into 4 groups which used dentin adhesives (OptiBond FL, Kerr; One-Step, Bisco) with or without light-curing, respectively (Group OB-C, OB-NC, OS-C and OS-NC). Pre-fabricated resin blocks were cemented on the entire surfaces with resin cement. For the direct resin restoration groups, the dentin surfaces were treated with dentin adhesives (Group OB-D and OS-D), followed by restoring composite resin. After 24 hr, the teeth were assigned to microtensile bond strength (${\mu}TBS$) and confocal laser scanning microscopy (CLSM), respectively. Results: The indirect resin restoration groups showed a lower ${\mu}TBS$ than the direct resin restoration groups. The ${\mu}TBS$ values of the light cured dentin adhesive groups were higher than those of the uncured dentin adhesive groups (p < 0.05). CLSM analysis of the light cured dentin adhesive groups revealed definite and homogenous hybrid layers. However, the uncured dentin adhesive groups showed uncertain or even no hybrid layer. Conclusions: Light-curing of the dentin adhesive prior to the application of the cementing material in luting a resin inlay to dentin resulted in definite, homogenous hybrid layer formation, which may improve the bond strength.

• Journal of Dental Rehabilitation and Applied Science
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• v.34 no.4
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• pp.297-305
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• 2018

Purpose: This study aimed to analyze stress distribution and maximum von Mises stress generated in intracoronal restorations and in tooth structures of mandibular molars with various types of cavity designs and materials. Materials and Methods: Three-dimensional solid models of mandible molar such as O inlay cavity with composite and gold (OR-C, OG-C), MO inlay cavity with composite and gold (MR-C, MG-C), and minimal invasive cavity on occlusal and proximal surfaces (OR-M, MR-M) were designed. To simulate masticatory force, static axial load with total force of 200 N was applied on the tooth at 10 occlusal contact points. A finite element analysis was performed to predict stress distribution generated by occlusal loading. Results: Restorations with minimal cavity design generated significantly lower values of von Mises stress (OR-M model: 26.8 MPa; MR-M model: 72.7 MPa) compared to those with conventional cavity design (341.9 MPa to 397.2 MPa). In tooth structure, magnitudes of maximum von Mises stresses were similar among models with conventional design (372.8 - 412.9 MPa) and models with minimal cavity design (361.1 - 384.4 MPa). Conclusion: Minimal invasive models generated smaller maximum von Mises stresses within restorations. Within the enamel, similar maximum von Mises stresses were observed for models with minimal cavity design and those with conventional design.

• Restorative Dentistry and Endodontics
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• v.37 no.3
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• pp.130-135
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• 2012

Objectives: The purpose of this study was to enhance curing light penetration through resin inlays by modifying the thicknesses of the dentin, enamel, and translucent layers. Materials and Methods: To investigate the layer dominantly affecting the power density of light curing units, resin wafers of each layer with 0.5 mm thickness were prepared and power density through resin wafers was measured with a dental radiometer (Cure Rite, Kerr). The dentin layer, which had the dominant effect on power density reduction, was decreased in thickness from 0.5 to 0.1 mm while thickness of the enamel layer was kept unchanged at 0.5 mm and thickness of the translucent layer was increased from 0.5 to 0.9 mm and vice versa, in order to maintain the total thickness of 1.5 mm of the resin inlay. Power density of various light curing units through resin inlays was measured. Results: Power density measured through 0.5 mm resin wafers decreased more significantly with the dentin layer than with the enamel and translucent layers (p < 0.05). Power density through 1.5 mm resin inlays increased when the dentin layer thickness was reduced and the enamel or translucent layer thickness was increased. The highest power density was recorded with dentin layer thickness of 0.1 mm and increased translucent layer thickness in all light curing units. Conclusions: To enhance the power density through resin inlays, reducing the dentin layer thickness and increasing the translucent layer thickness would be recommendable when fabricating resin inlays.