• 대한치과보철학회지
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• 제40권4호
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• pp.406-413
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• 2002

The purpose of this article is the consolidation of several methods in fabrication of Konus denture. It is different Konus denture from traditional Clasped removable partial denture in the procedures of construction. There are multiple procedures of fabrications of inner and outer crowns in the construction of Konus denture. It is important to fabricate the inner crown, the outer crown and the denture framework in construction of Konus denture. Each procedure should be performed exactly. However, there are many procedures in fabrications of them, and thus, the operator and technician bear trial and error. This article consolidate the multiple methods of fabrications of components of Konus denture. The first method is completion of inner crown, outer crown and denture after one impression taking. The second method is the procedures of cementation of inner crown, impression taking of edentulous area, and completion of outer crown and denture. The third method is the procedures or pick up impression taking of inner crown and completion of outer crown and denture on the inner crown of working cast. Each method is acceptable, but operater and technician should be accustomed with their own systemic procedures and minimize the errors in the construction of denture.

• 구강회복응용과학지
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• 제18권2호
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• pp.119-126
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• 2002

The purpose of this study was to restorate a patient who has a few remaining teeth with #15,23,24 supported Konus telescope denture in Maxillar and #44,43,33,34 supported Dolder bar retained overdenture in Mandible. Konus telescope and bar retained overdenture was taken better results in retention, support, stability compair with regular Removable partial denture. In Removable partial denture, the change of remaining teeth and edentulous ridge is natural. But Konus telescope and bar retained overdenture is a little effected in this change, so it is possiblble in long-term use. In cosider of patient's medical history and the possibility of additional tooth loss, Konus telescope denture can be easily repaired. Compaired with Konus telescope and bar retained overdenture showed high stability and easy cleansing because of rigid support, cross - arch splinting, and simple design. In delivery, patient had a difficulty with removal of denture and plaque control, but showed better condition, good oral hygienic care. Patient satisfied with denture functionally and esthetically. This study showed Konus telescope and bar retained overdenture was effective for treatment of patient remaing a few teeth in function, esthetic and psycologic satisfaction.

• 구강회복응용과학지
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• 제19권3호
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• pp.139-151
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• 2003

This study was to evaluate and to compare the compressive strength and the displacement effecting the abutment or the residual ridge which are transformed by the angle and the heights of the konus denture inner crown when restorating the unilateral konus denture by using the mandibular canine and the 1st premolar as an abutment. The author made 9 different models for different inner crown heights and konus angles. The inner crown height were divided to 5mm, 6mm, and 7mm and konus angles was divided to $4^{\circ}$, $6^{\circ}$, and $8^{\circ}$. And then in each model, 5kg of $15^{\circ}$ mesial load was stressed on the central fossa of the 1st premolar and the 1st molar. The stresses and displacement were measured using the finite element analysis. The results were as follows 1. The maximum compressive strength was shown on the connective area of the abutment and the denture base. 2. As the angle of the inner crown becomes increased, the compressive strength was shown smaller. 3. As the height of the inner crown becomes increased, the maximum compressive strength was shown smaller while the compressive strength of the root apex and the residual ridge showed larger. 4. When the stress was loaded only on the 1st premolar, the more compressive strength was concentrated on the root apex area of the 1st premolar. 5. When the stress was loaded only on the 1st premolar, the compressive strength was concentrated uniformly on the abutment and the residual ridge. 6. When the stress was loaded only on the 1st molar, the maximum displacement was shown on the distal part of the residual ridge.

• 대한치과기공학회지
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• 제28권2호
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• pp.331-346
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• 2006

Free-end partial dentures, which are supported by teeth surrounded by dental root membranes and elastic mucous membrane tissues, may cause stress to the abutment teeth due to external force imposed on the denture base, increase the mobility of the abutment teeth, and bring about a change in the periodontal tissue. General retainers used in partial dentures are categorized into clasp, attachment, and Konus crown. Stress imposed on the abutment teeth and mobility of the denture base have relations with the lifetime of a crown and abutment teeth, and have direct relations with the chewing ability. Thus, a need arises to make a comparative analysis of stress of the three direct retainers on the abutment teeth and interpret the mobility of the denture base. This study designed three kinds of removable partial dentures (one kind of attachment partial denture, one kind of Konus crown partial denture, and one kind of clasp partial denture), and fabricated Dentiforms of bilateral partial dentures (Kennedy Class I) with lower left 1st premolar and lower right 1st and 2nd premolars being as the abutment teeth. A strain gauge was installed in the mesial and distal surface of the lowerr left 1st premolar (No. 34) of the fabricated dentiform and in the lower part of the denture base, and installed were a clasp partial denture, an attachment partial denture, and a Konus crown partial denture. Then, the vertical static load of 5kgf and 7.5kgf at the occlusion surface of the lower left No. 6 molar was generated for a total of 20 frequencies of load each using a push-full gauge, and thus a change in the output of the strain gauge was measured. With the respective application of Konus crown, attachment and RPI clasp in the free-end partial denture, surveyed was the distribution of stress imposed on the abutment teeth and the denture base according to the location of occlusion force load so as to come up with the following results. 1. Konus crown and attachment partial dentures generated much stress, and more stress on the abutment teeth than RPI clasp dentures did. Attachment dentures tended to further intensify stress on the abutment teeth than Konus crown dentures did. 2. Attachment dentures and Konus dentures imposed less stress on the denture base than RPI clasp dentures did. There was no stress difference between Attachment and Konus crown dentures. 3. Dentures that were designed with the application of retainers using sturdy linkage methods tended to be less mobile.

• 대한치과보철학회:학술대회논문집
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• 대한치과보철학회 2002년도 춘계학술대회
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• pp.67-67
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• 2002

• 대한치과보철학회지
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• 제35권1호
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• pp.67-77
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• 1997

The purpose of this study was to evaluate a cases which was treated with konus telescope on the patients in bilaterally edentulous mandible. Author made konus telescope for two patients and then X-ray and clinical examination were used for evaluation of the function and change in supporting structure of the abutment teeth during the 60months. Patient complained of difficulties in removal of denture at the beginning but they got used to it soon. X-ray showed that there were no changes in supporting structure of the abutment teeth after 60 months. It was effective in promotion of ridge soreness and also reducing the need of relining. This study suggest that konus telescope was effective for the treatment of bilaterally edentulous situations.

• 대한치과보철학회지
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• 제54권3호
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• pp.259-266
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• 2016

하악 완전 무치악 환자의 보철수복에 있어 임플란트 식립 후 피개의치 제작은 첫 번째 치료 옵션으로 고려된다. 코너스 타입 부착장치를 이용한 피개의치는 견고한 지지를 제공하고 cross arch stabilization을 이루도록 하여 교합압을 균일하게 분산시키며, 의치에 의한 이차 고정으로 장기간의 안정성을 제공한다. 최근 소개된 팔라듐-은(Pd-Ag) 합금(Innovium)은 팔라듐, 은, 금 등의 귀금속 함량이 72% 이상인 CAD-CAM 시스템 전용 귀금속 합금으로 코너스 타입 부착장치를 제작하는데 적합한 물성을 가지고 있다. 본 증례에서는 완전 무치악 환자에서 상악에는 통상적인 총의치, 하악에는 임플란트를 4개 식립한 후에 코너스 타입 부착장치 피개의치 수복을 하였다. CAD-CAM 시스템을 이용하여 팔라듐-은 합금(Innovium)으로 제작된 코너스 타입 부착장치를 장착하였으며 이를 통해 의치의 유지와 안정을 향상시켰으며 만족할 만한 결과를 얻었기에 보고하고자 한다.

• 대한치과보철학회지
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• 제38권4호
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• pp.544-551
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• 2000

A fabrication method of inner and outer crown using CAD/CAM is presented. The information of abutment teeth is transferred to a computer through a 3-dimensional scanner. A Konus inner and outer crown is designed on a computer and a real crown is machined based on this design using CAM. This method can save laboratory time and reduce inaccuracies compare to conventional casting procedure. A stone model with six prepared abutment teeth from a patient was used in this study. Three dimensional information from the model was transferred to a computer using a contact type 3-dimensional scanner with a $25{\mu}m$ accuracy. All margins were identified on a computer image where there is a change in surface taper of a model. To provide a cement space, the image of a inner sur face of a Konus inner crown was duplicated $25{\mu}m$ apart from the surface of a prepared abutment teeth image. The cement space was $20{\mu}m$ at the cervical margin. All Konus crowns were machined with a $10{\mu}m$ accuracy. It was concluded that this method can reduce working-time for the laboratory process and increase accuracy. A further research is required to make a simplified process for a more complex prosthesis.

• 대한치과보철학회:학술대회논문집
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• 대한치과보철학회 1992년도 춘계학술대회
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• pp.20-21
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• 1992

• 대한치과보철학회:학술대회논문집
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• 대한치과보철학회 1993년도 추계학술대회
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• pp.76-76
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• 1993